NEOGEN CORP - Annual Report: 2013 (Form 10-K)

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

For the Fiscal Year Ended May 31, 2013

For The Transition Period From             To             .

COMMISSION FILE NUMBER 0-17988

NEOGEN CORPORATION

(Exact name of registrant as specified in its charter)

620 Lesher Place

Lansing, Michigan 48912

(Address of principal executive offices, including zip code)

517-372-9200

(Registrant’s telephone number, including area code)

SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT: NONE

SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT:

COMMON STOCK, $0.16 par value per share

(Title of Class)

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  x    No  ¨

Indicate by a check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act.    Yes  ¨    No  x

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act.

(Check one):

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes  ¨    No  x

Based on the closing sale price on November 30, 2012 the aggregate market value of the voting stock held by non-affiliates of the registrant was $1,087,000,000. For these purposes, the registrant considers its Directors and executive officers to be its only affiliates.

The number of outstanding shares of the registrant’s Common Stock was 24,065,489 on June 30, 2013.

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DOCUMENTS INCORPORATED BY REFERENCE

The Registrant’s definitive proxy statement to be prepared pursuant to regulation 14a and filed in connection with solicitation of proxies for its October 3, 2013 annual meeting of shareholders is incorporated by reference into part III of this Form 10-K.

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CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION

Forward-looking statements, within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, are made throughout this Annual Report on Form 10-K, including statements relating to management’s expectations regarding new product introductions; the adequacy of the Company’s sources for certain components, raw materials and finished products; and the Company’s ability to utilize certain inventory. For this purpose, any statements contained herein that are not statements of historical fact may be deemed to be forward-looking statements. Without limiting the foregoing, the words “believes,” “anticipates,” “plans,” “expects,” “seeks,” “estimates,” and similar expressions are intended to identify forward-looking statements. There are a number of important factors that could cause Neogen Corporation’s results to differ materially from those indicated by such forward-looking statements, including those detailed in ITEM 1A. RISK FACTORS and under the caption Management’s Discussion and Analysis of Financial Condition and Results of Operations – Critical Accounting Policies and Estimates and – Future Operating Results.

In addition, any forward-looking statements represent management’s views only as of the day this Annual Report on Form 10-K was first filed with the Securities and Exchange Commission and should not be relied upon as representing management’s views as of any subsequent date. While management may elect to update forward-looking statements at some point in the future, it specifically disclaims any obligation to do so, even if its views change.

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PART I.

Neogen Corporation and subsidiaries (Neogen or the Company) develop, manufacture, and market a diverse line of products dedicated to food and animal safety. The Company’s food safety segment consists primarily of diagnostic test kits and complementary products (e.g., dehydrated culture media) sold to food producers and processors to detect dangerous and/or unintended substances in human food and animal feed, such as foodborne pathogens, spoilage organisms, natural toxins, food allergens, genetic modifications, ruminant by-products, meat speciation, drug residues, pesticide residues and general sanitation concerns. These products are marketed by company sales personnel in North America, the United Kingdom and other parts of Europe, Mexico and Brazil and by distributors through the rest of the world. The diagnostic test kits are generally less expensive, easier to use and provide greater accuracy and speed than conventional diagnostic methods. The majority of the tests are disposable, single-use, immunoassay and DNA detection products that rely on the Company’s proprietary antibodies and RNA and DNA testing methodologies to produce rapid and accurate test results. The Company’s expanding line of food safety products also includes bioluminescence-based diagnostic technology.

Neogen’s animal safety segment is engaged in the development, manufacture and marketing of pharmaceuticals, rodenticides, disinfectants, vaccines, veterinary instruments, topicals, diagnostic products and genetic testing services for the worldwide animal safety market. The majority of these consumable products are marketed through a network of national and international distributors, as well as a number of large farm supply retail chains in the United States and Canada. The Company’s USDA-licensed facility in Lansing, MI, produces immunostimulant products for horses and dogs, and a unique equine botulism vaccine. The Company’s line of drug detection products are sold worldwide for the detection of abused and therapeutic drugs in animals and animal products.

Management’s vision is for Neogen to become a world leader in the development and marketing of products dedicated to food and animal safety. To meet this vision, a growth strategy consisting of the following elements has been developed: (i) increasing sales of existing products; (ii) introducing new products and product lines; (iii) expanding international sales; and (iv) acquiring businesses and forming strategic alliances. While each of the elements of the strategy is important over the long term, we have been historically successful at acquiring products and/or businesses; accordingly we maintain an active acquisition program to identify and capitalize on opportunities as they arise.

Neogen Corporation was formed as a Michigan corporation in June 1981 and actual operations began in 1982. The Company’s principal executive offices are located at 620 Lesher Place, Lansing, Michigan 48912-1595 and its telephone number is (517) 372-9200.

Neogen’s Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to those reports are available free of charge via our Internet website (www.neogen.com) as soon as reasonably practicable after such information is filed with, or furnished to, the United States Securities and Exchange Commission.

PRODUCTS

Product trademarks and registered trademarks owned by Neogen include: Corporate: Acumedia^®, Neogen^®, Neogen flask^®; Food Safety: AccuClean^®, AccuPoint^®, AccuScan^®, Agri-Screen^®, Alert^®, ANSR™, BetaStar^®, Centrus^®, DeliSafe™, GeneQuence^®, GENE-TRAK^®, ISO-GRID^®, NeoCare™, NeoColumn™, NeoSEEK™, NEO-GRID^®, Penzyme^®, Reveal^®, Revive^®, Soleris^®, TetraStar^®, Veratox^®, Simple. Accurate. Supported. Food Safety Solutions^SM, Microbiology at the Speed of Light^®; Life Sciences: Alert^®, K-Blue^®, K-Gold^®; Rodenticides: Cat Logo^®; Cykill™ Di-Kill^®, One Bad Cat^®, Promar^®, Ramik^®, Rodex™ Animal Safety: Ag-Tek^®, AluShield™, AmVet^®, BotVax^®, BreederSleeve^®, Calf Eze™, D3 Needles™, DC&R^®, Dr. Franks^®, ElectroJac^®, ELISA Technologies^®, EqStim^®, EquiSleeve^®, E-Z Bond™, E-Z Catch^®, Furazone^®, Ideal^®, ImmunoRegulin^®, Insight™, Jolt^®, MaxiSleeve^®, Macleod^®, MegaShot™, MycAseptic™, NeedleGard™, NFZ™, PanaKare™, Parvosol^®, PolyPetite™, PolyShield™, PolySleeve^®, Poridon^®, Pro-Fix^®, Pro-Flex^®, Pro-Shot™, RenaKare™, Rot-Not™, Safe-T-Flex™, Spectrasol™, Spec-Tuss™, Squire^®, Stress-Dex^®, ThyroKare™, TopHoof™, Tri-Hist^®, Tri-Seal™, Tryad^®, Unibute^®, Uniprim^®, Unixin^®, UriKare™, Vet-Tie™, Vita-15™ BioSentry Brands: Acid-A-Foam™, BioCres™ 50, BioPhene™, BioQuat™, Chlor-A-Foam™, GenQuat^®, X-185™ Agrigenomics: GeneSeek^®, Genomic Profiler™, Genomic Solutions for Food Security^®, Igenity^®, Igenity logo^®, SeekGain™, SeekSire™, SeekTrace™, TRU-CoatColor™, TRU-Parentage™, TRU-Polled™.

Neogen operates in two primary business areas: the Food Safety segment, which develops and markets products for the detection of pathogens, natural toxins, allergens and other unwanted substances in food and feed products; and the Animal Safety segment, which develops and markets products and services dedicated to animal health. See Notes to Consolidated Financial Statements elsewhere in this Form 10-K for financial information about the Company’s business segments and international operations.

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FOOD SAFETY SEGMENT

Neogen’s food safety segment is primarily engaged in the production and marketing of diagnostic test kits and complementary products marketed to food and feed producers and processors to detect dangerous and/or unintended substances in food and animal feed, such as foodborne pathogens, spoilage organisms, natural toxins, food allergens, genetic modifications, ruminant by-products, meat speciation, drug residues, pesticide residues and general sanitation concerns.

Many of Neogen’s food safety test kits use immunoassay technology to rapidly detect target substances. The Company’s ability to produce superior antibodies has set its products apart from immunoassay test kits produced and sold by other companies. The Company’s kits are available in microwell formats, which allow for automated and rapid processing of a large number of samples, and lateral flow and other similar devices that provide distinct visual results. Typically, test kits use antibody-coated test devices and chemical reagents to indicate a positive or negative result for the presence of a target substance in a test sample; the simplicity of the tests makes them accessible to all levels of food producers, processors and handlers.

The Company’s kits are generally based on internally developed technology or technology that is acquired in connection with acquisitions. In 2013, Food Safety incurred royalty expense totaling $1,196,000 for licenses and royalties for technology used in the Company’s products, including expense of $345,000 for licenses related to the dairy antibiotics product line and $285,000 for allergen products. The majority of our royalty rates are in the low single-digit range. Some licenses involve technology that is exclusive to Neogen’s use while others are nonexclusive and involve technology licensed to multiple licensees.

Neogen’s test kits are used to detect potential hazards in food and animal feed by testers ranging from small local grain elevators to the largest, best-known food and feed processors in the world, and numerous regulatory agencies.

Meat and poultry processors, seafood processors, fruit and vegetable producers and many other market segments are the primary users of the Neogen’s ANSR, Reveal and Alert tests for foodborne bacteria, including E. coli O157:H7, Salmonella, Listeria and Campylobacter. Grain producers and processors of all types and sizes use the Company’s Veratox, Agri-Screen, Reveal, and Reveal Q+ tests for mycotoxins, including aflatoxin, deoxynivalenol, fumonisin, ochratoxin, zearalenone and T-2 toxin, to help ensure product safety and quality. The world’s largest producers of cookies, crackers, candy, ice cream, and many other foods, use the Company’s Veratox, Alert and Reveal, Reveal 3-D and BioKits testing products for food allergens to help protect their food-allergenic customers from the inadvertent contamination of products with food allergens, such as peanut, milk, casein, egg, almond, gliadin (gluten), soy, and hazelnut residues. The Company’s December 2009 acquisition of the BioKits food safety business of Gen-Probe Incorporated added more than 50 test kits for food allergens, meat and fish speciation, and plant genetics, including tests in an advanced lateral flow format for gluten and casein. The June 2011 acquisition of the assets of the VeroMara seafood testing laboratory brought additional testing services to the Company for the shellfish and salmon aquaculture industries. These include testing for shellfish toxins, general foodborne pathogens, including E. coli, noroviruses and salmon husbandry.

Dairies are primary users of Neogen’s BetaStar, BetaStar Combo, Penzyme and TetraStar diagnostic tests to detect the presence of beta lactam and tetracycline antibiotics in milk. The presence of these drugs in milk is a public health hazard and an economic risk to processors as it limits the milk’s further processing.

Neogen developed the first rapid immunoassay test kits to detect ruminant by-products in animal feed ingredients and finished feed. The Reveal tests were designed to help prevent ruminants (e.g., cattle, sheep and goats) from being fed rendered materials containing ruminant by-products in an effort to prevent the spread of BSE (a.k.a., “mad cow” disease) from animal to animal. The Company’s specialty products for the seafood market include tests for histamine, a highly allergenic substance that occurs when certain species of fish begin to decay; chloramphenicol, a banned antibiotic in most of the world, but still used by some shrimp farmers to improve the yield of their product; and sulfites, an effective but potentially allergenic shrimp preservative.

Neogen also offers other test methods and products to complement its immunoassay tests. The Company’s line of GENE-TRAK and GeneQuence assays utilize DNA probe hybridization technology to create exceptionally sensitive and specific tests to detect foodborne bacteria. Instead of using antibodies as in an immunoassay to “capture” a target pathogen that may be present in a sample, this technology uses a portion of the target pathogen’s unique ribosomal RNA (rRNA) sequence to bind to complementary rRNA strands of the pathogen in a sample. The result is a test with the ease and speed of a rapid test method, but the specificity of a time-consuming conventional laboratory method (specificity is a test’s ability to distinguish between a target pathogen and a closely-related but innocuous bacterium). Neogen’s ANSR pathogen detection system is an isothermal amplification reaction test method which exponentially amplifies the DNA of any bacteria present in food and environmental samples to detectable levels in 10 minutes. Combined with ANSR’s single enrichment step, Neogen’s new pathogen detection method can provide DNA-definitive results in a fraction of the time of other molecular detection methods on the market today. ANSR is designed for use in the food and pet food production facilities, and laboratories that serve those industries.

Neogen’s Soleris products are used by food processors to identify the presence of spoilage organisms (e.g., yeast and mold) and other microbiological contamination.

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Neogen’s Acumedia subsidiary offers dehydrated culture media for varied purposes, including traditional bacterial testing, and growing beneficial bacteria, such as cultures for sausages and beer. The Company’s customers for dehydrated culture media also include commercial and research laboratories and producers of pharmaceuticals, cosmetics and veterinary vaccines.

Neogen manufactures and markets its AccuPoint rapid sanitation test for adenosine triphosphate (ATP), a chemical found in all living cells. This easy-to-use and inexpensive test uses bioluminescence to quickly determine if a contact surface has been completely sanitized. When ATP comes into contact with the firefly reagents luciferin and luciferase contained in the test device, a reaction takes place that produces light. More light is indicative of higher levels of ATP and a need for more thorough sanitation. The Company’s worldwide customer base for its ATP sanitation testing products includes food and beverage processors, the food service and healthcare industries, as well as many other users.

Revenues from Neogen’s Food Safety Division accounted for 51.2%, 49.5% and 49.5% of the Company’s total revenues for fiscal years ended May 31, 2013, 2012 and 2011, respectively.

ANIMAL SAFETY SEGMENT

Neogen’s animal safety segment is primarily engaged in the development, manufacture and marketing of pharmaceuticals, rodenticides, disinfectants, vaccines, veterinary instruments, topicals, diagnostic products and genomic services.

Animal Safety’s NeogenVet product line provides innovative, value-added, high quality products to the veterinary market. Top NeogenVet products include PanaKare, a digestive aid that serves as a replacement therapy where digestion of protein, carbohydrate and fat is inadequate due to exocrine pancreatic insufficiency; Natural Vitamin E-AD, which aids in the prevention and treatment of vitamin deficiencies in swine, cattle and sheep; and RenaKare, a supplement for potassium deficiency in cats and dogs. Other products sold under the NeogenVet brand include Vita-15 and Liver 7, which are used in the treatment and prevention of nutritional deficiencies in horses.

In 2003, Neogen acquired Hacco, Inc., a manufacturer of rodenticides, including the brand Ramik and Hess & Clark, Inc., whose principal products are disinfectants, such as DC&R, used in animal and food production facilities.

In early fiscal 2009, Neogen acquired a product line of 14 different product formulations used in animal health and hygiene applications from DuPont Animal Health Solutions (DAHS). These products, including 904 Disinfectant, Acid-A-Foam, and FarmFluid S added to the Company’s strategy of providing biosecurity solutions in the farm production markets. The products also have the potential for use in the veterinary clinic market to maintain sanitary conditions and limit the potential hazards of bacteria, fungi, and viruses.

Neogen’s in-house equine protozoal myeloencephalitis (EPM) testing service offers veterinarians accurate, timely results for early diagnosis of the disease that can devastate a horse’s central nervous system. In addition, the Company’s BotVax B vaccine has successfully protected thousands of high-value horses and foals against type B botulism, commonly known as Shaker Foal Syndrome. The Company’s product is the only USDA-approved vaccine for the prevention of Type B botulism in horses.

Years of research and many thousands of doses have proven Neogen’s EqStim immunostimulant to be safe and effective as a veterinarian-administered adjunct to conventional treatment of equine bacterial and viral respiratory infections. The Company’s ImmunoRegulin product uses similar immunostimulant technology to aid in the treatment of pyoderma (a bacterial skin inflammation) in dogs.

With the October 2012 acquisition of Macleod Pharmaceuticals, Neogen added Uniprim to its product offering. Uniprim is a leading veterinary antibiotic widely distributed throughout the U.S., and is also available in Canada through an exclusive distribution agreement.

Neogen markets a broad line of veterinary instruments and animal health delivery systems under the Ideal product brand name. Approximately 250 different products are offered, many of which are used to deliver animal health products, such as antibiotics and vaccines. Ideal’s D3 Needles and the HDN, HDDI and DTN needle product lines are stronger than conventional veterinary needles, and are uniquely detectable by common meat processing facility metal detectors — a big market advantage in the safety-conscious beef and swine industries.

Animal safety products offered by Neogen to the retail over-the-counter market include many of the Ideal brand veterinary instruments and products sold under the Squire brand. Squire products include Stress-Dex oral electrolyte replacer for performance horses, and Furazone, for the prevention and treatment of surface bacterial infections in wounds, burns and cutaneous ulcers. Ag-Tek and other hoof care, disposables and artificial insemination supplies are marketed to the dairy and veterinary industries.

Neogen’s line of approximately 100 drug detection immunoassay test kits are sold worldwide for the detection of approximately 300 abused and therapeutic drugs in farm animals and racing animals, such as horses, greyhounds and camels, and for detection of drug residues in meat and meat products. The test kits are also used for human forensic toxicology drug screening applications. This line includes tests for narcotics, analgesics, stimulants, depressants, tranquilizers, anesthetics, steroids and diuretics.

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Neogen also has several products used by researchers for the detection of biologically-active substances. These products include tests for cyclic nucleotides, hormones, leukotrienes, prostaglandins and steroids. Marketed under the trademarks of K-Blue and K-Gold, Neogen offers proprietary substrates that it uses in its own testing products, and that are sold to other diagnostic test kit manufacturers.

In April 2010, Neogen acquired GeneSeek, Inc., a leading commercial agricultural genetics testing laboratory in the United States. GeneSeek’s technology employs high-resolution DNA genotyping for identity and trait analysis in a variety of important animal and agricultural plant species. Through the use of single nucleotide polymorphism (SNP) discovery and analysis, GeneSeek empowers its customers to speed genetic improvement efforts, as well as identify economically important diseases, primarily in large-herd beef and dairy cattle, swine, poultry and sheep producers. The Company’s May 2012 acquisition of the assets of Igenity provides the extensive bioinformatics system needed to help identify the animal’s positive or negative traits. In January 2013, Neogen acquired the assets of Scidera Genomics, LLC, which performs parentage testing and trait analysis for the cattle and canine industries. The Scidera acquisition further complements the genotyping technology Neogen can offer to worldwide animal genomics customers.

Many of the genomic services use licensed technology. Animal Safety incurred royalty expense totaling $641,000 for licenses and royalties for technology used in the segment’s products and services, including expense of $388,000 for licenses related to the genomic services line.

Revenues from Neogen’s Animal Safety Division accounted for 48.8%, 50.5% and 50.5% of the Company’s total revenues for fiscal years ended May 31, 2013, 2012 and 2011, respectively.

GENERAL SALES AND MARKETING

Neogen’s sales efforts are generally organized by specific markets, rather than by products or geography. During the fiscal year that ended May 31, 2013, the Company had approximately 13,500 customers for its products. Since many customers for animal safety products are distributors, and certain animal safety products are offered to the general retail market, the total number of end users of the Company’s products is considerably greater than 13,500. As of May 31, 2013 a total of 237 employees were assigned to sales and marketing functions within the Company, compared to 235 at the end of May 2012. During the years ended May 31, 2013, 2012 and 2011 no single customer or distributor accounted for 10% or more of the Company’s revenues.

DOMESTIC SALES AND MARKETING

FOOD SAFETY

To reach each customer and prospect with expertise and experience, Neogen has a staff of specialized food safety sales and technical service representatives assigned to specific markets. This staff sells Company products directly to end users, and also handles technical support issues that arise with customers in the United States and Canada.

Neogen’s food safety markets are primarily comprised of: milling and grain, including grain elevators, feed mills, pet food manufacturers, and grain inspection companies; meat and poultry, including meat and poultry processors, producers of ready-to-eat meat and poultry products; and the USDA’s Food Safety Inspection Service (FSIS); grocery products, including flour millers, malters, bakeries, candy and confection manufacturers, manufacturers of prepared meals, nuts, spices, cookies, crackers and other snack foods; fruits and vegetables, including growers and processors of juice and packaged fresh cut grocery items; seafood, including harvesters and processors of a wide variety of seafood products; dairy and beverage, including milk processors and soft drink bottlers; healthcare, including hospitals and distributors to the healthcare industry; Acumedia dehydrated culture media, including commercial and research laboratories and producers of pharmaceuticals, cosmetics and veterinary vaccines; food service and retail, including fast food service establishments and retail grocery market chains, and nutraceuticals, including producers and marketers of a wide variety of nutraceutical products.

ANIMAL SAFETY

Neogen markets a broad range of pharmaceuticals, vitamin injectibles, wound care products, topicals, instruments, genomic services and biologicals to the ethical veterinary market. The product range is focused on the food (e.g., cattle, swine and poultry) and companion (e.g., horses, dogs, and cats) animal markets. Neogen’s sales group works directly with veterinarians, clinics and universities and markets through established ethical distributors by supporting the efforts of over 500 domestic distributor sales representatives calling on 35,000 plus veterinarians. Neogen further supports its veterinary distribution channel through product training, field support, promotions and technical service.

The Company believes the over-the-counter (OTC) animal health market may offer significant growth opportunities for Neogen and its products. Neogen offers a broad range of products including well-recognized brands of rodenticides, disinfectants, instruments and horse care products. To reach the OTC market, Neogen’s sales team works with a large network of animal health distributors including marketing groups, traditional two-step distributors, catalogers and large retail chains. Support includes product training, field support, planogram solutions, promotions and advertising. As a commercial laboratory, GeneSeek provides services direct to large-herd beef and dairy cattle, swine, poultry and sheep producers, as well as parentage testing for various canine breed associations.

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INTERNATIONAL SALES AND MARKETING

FOOD SAFETY:

Neogen Europe, Ltd., located in Ayr, Scotland, provides the Company access to the European Union (“EU”), and sells food safety products and certain genomic services to its network of customers and distributors throughout the EU. Customers in the United Kingdom, France and Germany are served by Company employees. Other European region customers generally are serviced by distributors managed by Neogen Europe personnel. Neogen Europe’s research and development continue to be a strong asset in the development of products tailored to meet the unique requirements of the European market.

The Company formed a subsidiary in 2008 in Mexico, Neogen Latinoamérica. The company, headquartered in Mexico City, distributes the Company’s food and animal safety products throughout Mexico. Neogen Latinoamérica unifies Neogen’s widespread business activities throughout the region to animal and crop producers, and food processors.

In October 2009, the Company formed a subsidiary in Brazil, Neogen do Brasil (Neogen of Brazil). The company, headquartered near Sao Paulo, distributes Neogen’s food and animal safety products throughout Brazil. Neogen do Brasil was created to accelerate the penetration of Neogen products in Brazil, which is one of the world’s largest food producers and exporters. Brazil is one of the world leaders in the export of numerous food commodities, including beef, poultry, soybeans, coffee, sugar, and orange juice.

Internationally, outside of the company locations mentioned above, Neogen uses its own sales managers to work closely with and coordinate the efforts of a network of approximately 120 distributors in more than 100 countries. The distributors provide local training and technical support, perform market research, and promote Company products within designated countries around the world.

Neogen’s dairy antibiotics diagnostic products are distributed outside of North America, Brazil and China by Denmark based Chr. Hansen, an international supplier of natural ingredient solutions for the food, health and nutritional industries.

Neogen’s Soleris diagnostic test system for general spoilage organisms is marketed worldwide by Neogen personnel and the Company’s network of distributors.

Since 2002, Neogen has maintained a presence in Shanghai, China, to better serve the expanding food safety market there, as well as more closely manage its Chinese food and animal product procurement. Neogen established a consulting office in Shanghai in 2012 and intends to continue to use local distributors to introduce the Company’s products in the Chinese market.

ANIMAL SAFETY:

Animal Safety has a strong presence in several key international markets with rodenticides, disinfectants, instruments, diagnostics and veterinary products. Utilizing Company personnel in Brazil and Mexico, as well as in-country distributors and US-based exporters, these markets include Canada, Mexico and Central America, Brazil and South America, the Caribbean, Australia, Europe and Asia.

GENERAL:

Sales to customers outside the United States accounted for 40.1%, 41.7% and 42.1% of the Company’s total revenues for fiscal years ended May 31, 2013, 2012 and 2011, respectively.

Risks associated with export sales and foreign operations include the need for regulatory approvals, possible disruptions of product delivery, the differing product needs of foreign customers, difficulties in building and managing foreign operations, fluctuations in the value of foreign currencies, import/export duties and quotas, and unexpected regulatory, economic or political changes in foreign markets.

RESEARCH AND DEVELOPMENT

Management maintains a strong commitment to Neogen’s research and development activities. The Company’s product development efforts are focused on the enhancement of existing product lines and in development of new products that fit its business strategy. As of May 31, 2013, the Company employed 66 individuals in its worldwide research and development group, including immunologists, chemists and microbiologists. Research and development costs were approximately $7.8 million, $6.6 million and $6.8 million representing 3.7%, 3.6% and 4.0% of total revenues in fiscal 2013, 2012 and 2011, respectively. Management currently expects the Company’s research and development expenditures to approximate 3% to 5% of total revenues.

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Neogen has ongoing development projects for new diagnostic tests and other complementary products for both the food safety and animal safety markets. Management expects that these products will be available for marketing in fiscal years 2014 to 2016.

Portions of certain technologies utilized in some products marketed by Neogen were acquired from or developed in collaboration with affiliated partnerships, independent scientists, governmental units, universities and other third parties. The Company has entered into agreements with these parties that provide for the payment of license fees and royalties based upon sales of products that utilize the pertinent technology. License fees and royalties expensed under these agreements amounted to $1,837,000, $1,371,000 and $1,561,000 in 2013, 2012 and 2011, respectively.

PROPRIETARY PROTECTION AND APPROVALS

Neogen uses trade secrets as proprietary protection in numerous of its food and animal safety products. In many cases, the Company has developed unique antibodies capable of detecting microorganisms and residues at minute levels. The supply of these antibodies, and the proprietary techniques utilized for their development, may offer better protection than the filing of patents. Such proprietary reagents are maintained in secure facilities and stored in more than one location to reduce exposure to complete destruction by natural disaster or other means.

Patent and trademark applications are submitted whenever appropriate. Since its inception, Neogen has acquired and received numerous patents and trademarks, and has several pending patents and trademarks. The patents expire at various times over the next 15 years.

A summary of patents by product categories follows:

The Company does not expect that the near-term expiration of any patent will have a significant effect on future results of operations.

Management believes that Neogen has adequate protection as to proprietary rights for its products. However, it is aware that substantial research has taken place at universities, governmental agencies and other companies throughout the world and that numerous patents have been applied for and issued. To the extent some of the Company’s products may now, or in the future, embody technologies protected by patents, copyrights or trade secrets of others, licenses to use such technologies may need to be obtained in order to continue to sell the products. These licenses may not be available on commercially reasonable terms. Failure to obtain any such licenses may delay or prevent the sale of certain new or existing products. In addition, patent litigation is not uncommon. Accordingly, there can be no assurance that the Company’s existing patents will be sufficient to completely protect its proprietary rights.

One of the major areas affecting the success of biotechnology development involves the time, cost and uncertainty surrounding regulatory approvals. Neogen products requiring regulatory approval, which the Company currently has in place, include BotVax B, EqStim, ImmunoRegulin, Uniprim and BetaStar. The Company’s general strategy is to select technical and proprietary products that do not require mandatory approval to be marketed. Neogen’s rodenticide and disinfectant products are subject to registration in the United States and internationally.

Neogen utilizes third-party validations on many of its disposable test kits as a marketing tool to provide its customers with the proper assurances. These include validation by the AOAC International, independently administered third-party, multi-laboratory collaborative studies and approvals by the U.S. Federal Grain Inspection Service and the U.S.D.A. Food Safety Inspection Service for the use of Company products in their operations.

PRODUCTION AND SUPPLY

Neogen manufactures its products in Lansing, Michigan; Lexington, Kentucky; Randolph, Wisconsin; Fort Collins, Colorado; and Ayr, Scotland. As of May 31, 2013, there were approximately 338 full-time employees assigned to manufacturing in these five locations, operating on one or two shifts; future demand increases could be accommodated by adding shifts. Management believes it could increase the current output of its primary product lines by more than 50% using the current space available with a minimum of additional capital equipment. To meet current and future needs in Lexington, in August 2011 the Company purchased a production, warehouse and office building of 128,000 square feet, and moved production there from a locally rented facility.

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Manufacturing of diagnostic tests for detection of natural toxins, pathogens, food allergens, spoilage organisms and pesticides, final kit assembly, quality assurance and shipping takes place in the Company’s facilities in Lansing. Proprietary monoclonal and polyclonal antibodies for Neogen’s diagnostic kits are produced on a regular schedule in the Company’s immunology laboratories. Manufacturing of diagnostic tests for the presence of dairy antibiotics in milk is completed in the Company’s Lansing facilities. Generally, final assembly and shipment of diagnostic test kits to customers in Europe are performed in the Company’s Ayr, Scotland facility.

Assembly and shipment of electronic readers and disposable single-use samplers takes place in the Company’s facilities in Lansing. Soleris instrument readers are produced and shipped to customers mostly by third party vendors.

Dehydrated culture media products are manufactured in a FDA-registered facility in Lansing. Products are blended following strict formulations or custom blended to customer specification and shipped directly to customers from Lansing.

Manufacturing of animal health products, pharmacological diagnostic test kits and test kits for drug residues takes place in the Company’s FDA-registered facility in Lexington. In general, manufacturing operations including reagent manufacturing, quality assurance, final kit assembly and packaging are performed by Neogen personnel. Certain animal health products that are purchased finished or that are toll manufactured by third party vendors and veterinary instruments are warehoused and shipped from the Company’s Lexington facility. Other veterinary instruments are produced in the Company’s facilities in Lansing, and are generally then shipped to Lexington, for distribution to customers.

Manufacture of rodenticides and certain cleaners and disinfectants takes place in Randolph. Manufacturing of rodenticides consists of blending technical material (active ingredient) with bait consisting principally of various grains. Certain cleaners and disinfectants are manufactured in Randolph, while others are purchased from other manufacturers and sold, or toll manufactured by third parties.

Neogen maintains a Lansing-based USDA-approved manufacturing plant devoted to the production of the biologic products EqStim and ImmunoRegulin. P. acnes seed cultures are added to media and then subjected to several stages of further processing resulting in a product that is filled and packaged within the facility. The Company’s BotVax B vaccine is also produced in the Lansing facility utilizing Type B botulism seed cultures and a traditional fermentation process. All completed biologic products are then shipped to Neogen’s Lexington facilities for inventory and distribution to customers.

Uniprim, a veterinary antibiotic, is manufactured in an FDA-registered facility in Fort Collins.

With its 2010 acquisition of GeneSeek, Inc. and recent acquisitions of Igenity and Scidera Genomics, Neogen offers agricultural genetics laboratory services and bioinformatics in Lincoln, Nebraska and Davis, California. Through its laboratory services and bioinformatics (primarily in beef and dairy cattle, pigs, sheep, horses and dogs), GeneSeek empowers its customers to speed genetic improvement efforts, as well as identify economically important diseases.

Neogen purchases component parts and raw materials from more than 500 suppliers. Though many of these supplies are purchased from a single source in order to achieve the greatest volume discounts, the Company believes it has identified acceptable alternative suppliers for most of its key components and raw materials where the Company believes it is economically feasible to do so. There can be no assurance that the Company would avoid a disruption of supply in the event a supplier discontinues shipment of product. Shipments of products are generally accomplished within a 48-hour turnaround time. As a result of this quick response time, Neogen’s backlog of unshipped orders at any given time is not significant.

COMPETITION

Although competitors vary in individual markets, management knows of no competitor that is pursuing Neogen’s fundamental strategy of developing and marketing a broad line of products, ranging from disposable tests and dehydrated culture media to veterinary pharmaceuticals and veterinary instruments for a large number of food safety and animal safety concerns. For each of its individual products, the Company faces intense competition from companies ranging from small businesses to divisions of large international companies. Some of these organizations have substantially greater financial resources than the Company. The Company competes primarily on the basis of ease of use, speed, accuracy, and other similar performance characteristics of its products. The breadth of the Company’s product line, the effectiveness of its sales and customer service organizations and pricing are also components in management’s competitive plan.

Future competition may become even more intense, including the development of changing technologies, which could affect the marketability and profitability of Neogen’s products. The Company’s competitive position also will depend on management’s ability to develop proprietary products, attract and retain qualified scientific and other personnel, develop and implement production and marketing plans and obtain patent protection. Additionally, the Company must have adequate capital resources to execute its strategy.

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FOOD SAFETY:

Neogen’s Food Safety Division has well established distribution of its products using Company employees in North America, Europe, Mexico and Brazil, and from an active and aggressive distributor group elsewhere. With one of the largest professional sales organizations in the industry, management believes that it maintains a general competitive advantage as its sales personnel are in a position to be in contact with customers and prospects more frequently than its competitors. Additionally, Neogen has what it believes to be a unique insight into the food industry as opposed to clinically based competition.

Competition for pathogen detection products includes traditional methods and antibody and genetic-based platforms. Neogen’s product offerings compete across the entire spectrum of methods. Competition for natural toxins and allergen detection products include instrumentation and antibody-based tests. While for these and other food safety products the Company’s offerings will not always compete on all platforms in all markets, the products that are offered provide tests that can be well utilized by most customers to meet their testing needs.

Besides its extensive product offerings and extensive distribution network, the Company focuses its competitive advantage in the areas of customer service, product performance and speed and ease of use of its products. Additionally, by aggressively maintaining itself as a low-cost producer, Neogen believes that it can be competitive with new market entrants that may choose a low pricing strategy in an attempt to gain market share.

ANIMAL SAFETY:

Neogen’s Animal Safety Division faces no one competitor across the products and markets it serves. In the racing industry market, the Company believes it holds a leading market share position. In the Life Sciences market, the Company competes against several other diagnostic and reagent companies with similar product offerings.

In the veterinary market, Neogen markets BotVax B, the only USDA approved vaccine for the prevention of botulism Type B in horses. The Company competes on other key products through differentiated product performance and superior customer and technical support. With some of its products, the Company provides solutions as a lower cost alternative and offers a private label option for its distributors.

Competition in the rodenticide market includes several companies of comparable size that offer products into similar market segments. The rodenticide retail market is not dominated by a single brand. While the technical materials used by the competing companies are similar, Neogen uses manufacturing and bait formula techniques to better draw rodents to the product and thereby improve overall product performance.

Several companies compete for sales in the disinfectant and cleaner product segment. Neogen’s products are sold through its distributor network around the world, primarily to assist in the cleaning and disinfecting of animal production facilities.

Neogen competes in the retail market by providing solutions to common retail problems – stock outs, wasted floor space, and inconsistent brand identity. The Company offers planograms and reordering systems to maximize turns and profitability for its retail customers.

Neogen entered the genomics market through its April 2010 acquisition of GeneSeek, the leading commercial agricultural genetics laboratory in the U.S., and in 2012 added to its capability with the asset purchase of Igenity, which offers proprietary bioinformatics. In January 2013, Neogen acquired the assets of Scidera Genomics, LLC, a company that performs parentage testing and trait analysis, primarily for the cattle and canine industries. GeneSeek, Igenity and Scidera are not involved in cloning or the development of transgenic animals, but do employ cutting-edge technology in the area of genomics. The result of this technology allows the acceleration of natural selection through selective breeding of traits such as disease resistance and meat quality. Competition comes mainly from service providers whose primary focus is the human and pharmaceutical industries, as well as several smaller companies offering genomic services.

GOVERNMENT REGULATION

A significant portion of Neogen’s products and revenues are affected by the regulations of various domestic and foreign government agencies, including the U.S. Department of Agriculture, the Environmental Protection Agency, and the U.S. Food and Drug Administration. Changes in these regulations could affect revenues and/or costs of production and distribution.

Neogen’s development and manufacturing processes involve the use of certain hazardous materials, chemicals and compounds. Management believes that the Company’s safety features for handling and disposing of such commodities comply with the standards prescribed by local, state and federal regulations; however changes in such regulations or rules could involve significant costs to the Company and could be materially adverse to its business.

The rodenticides, disinfectants and sanitizers manufactured and distributed by Neogen Corporation are subject to Environmental Protection Agency and various state regulations. In general, any international sale of the product must also comply with similar

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regulatory requirements in the country of destination. Each country has its own individual regulatory construct with specific requirements (e.g., label in the language of the importing country). To the best of our knowledge pertinent products are in compliance with the appropriate federal and foreign regulations, in the respective country such products are sold.

Dairy products used in National Conference on Interstate Milk Shipments (NCIMS) and other milk monitoring programs are regulated by the FDA. Before products requiring FDA approval can be sold in the U.S., extensive product performance data must be submitted in accordance with FDA approved protocol administered by AOAC Research Institute (AOAC RI). Following approval of a product by the FDA, the product must also be approved by NCIMS, an oversight body that includes state, federal and industry representatives. Our BetaStar US dairy antibiotic residue testing product has been approved by the FDA, NCIMS, and AOAC RI. While some foreign countries accept AOAC RI approval as part of their regulatory approval process, many countries have their own regulatory processes.

Many of the food safety diagnostic products of allergens, spoilage organisms and mycotoxins do not require direct government approval. However, the Company has pursued AOAC approval for many of the products to enhance their marketability. Products for mycotoxin detection, which are used by federal inspectors, must be approved by the USDA. Neogen Corporation has obtained and retained the necessary approvals to conduct its current operations.

Neogen’s veterinary vaccine products and one pharmaceutical product require government approval to allow for lawful sales. The vaccine products are approved by United States Department of Agriculture, Center for Veterinary Biologics (USDA-CVB) and the pharmaceutical product is approved by the FDA. The products, and the facilities in which they manufactured, are in a position of good standing with both agencies. The Company has had no warning letters based on any review or inspection, no recalls on any of these products and knows of no reason why its freedom to manufacture and market in the future is in any danger.

Other animal safety and food products generally do not require additional registrations or approvals. However, Neogen Corporation’s regulatory staff routinely monitors amendments to current regulatory requirements to ensure compliance.

EMPLOYEES

As of May 31, 2013 the Company employed 781 full-time persons. None of the employees are covered by collective bargaining agreements. There have been no work stoppages or slowdowns due to labor-related problems, and management believes that its relationship with its employees is generally good. Employees having access to proprietary information have executed confidentiality agreements with the Company.

An investment in our common shares involves a high degree of risk. The risks described below are not the only ones that an investor faces. Additional risks that are not yet known to us or that we currently think are immaterial could also impair our business, financial condition or results of operations. If any of the following risks actually occurs, our business, financial condition or results of operations could be adversely affected.

Risks Relating to Our Business

Our business strategy is dependent on successfully identifying and integrating acquisitions as well as promoting internal growth.

Our business has grown significantly over the past several years as a result of both internal growth and acquisitions of existing businesses and their products. Identifying and pursuing acquisition opportunities, integrating these acquisitions into our business and managing their growth require a significant amount of management’s time and skill. We cannot assure that we will be effective in identifying, integrating or managing any acquisition target in the future. Our failure to successfully integrate and manage any future acquisition may have a material adverse effect on our operating results and financial condition.

In addition, if we continue to experience growth in our business, our growth could place a significant strain on our management, customer service, operations, sales and administrative personnel and other resources. To serve the needs of our existing and future customers, we will be required to recruit, train, motivate and manage qualified employees. We have incurred and will continue to incur significant costs to retain qualified management, sales and marketing, engineering, production, manufacturing and administrative personnel, as well as expenses for marketing and promotional activities. Our ability to manage our planned growth depends upon our success in expanding our operating, management, information and financial systems, which might significantly increase our operating expenses.

We may not be able to effectively manage our future growth, and if we fail to do so, our business, financial condition and results of operations would be adversely affected.

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We rely significantly on our information systems and telecommunications infrastructure to support our operations and a security breach of the Company’s information systems could damage the Company’s reputation and have an adverse effect on operations and results.

We rely on information systems and telecommunications infrastructure to integrate departments and functions, to enhance our ability to service customers, to improve our control environment and to manage our cost reduction initiatives. Any issues involving our critical business applications and infrastructure may adversely impact our ability to manage operations and the customers we serve. In addition, if the Company’s security and information systems are compromised or employees fail to comply with the applicable laws and regulations and this information is obtained by unauthorized persons or used inappropriately, it could adversely affect the Company’s reputation, as well as results of operations, and could result in litigation, the imposition of penalties, or significant expenditures to remediate any damage to persons whose personal information has been compromised.

Disruption of our manufacturing and service operations would have an adverse effect on our financial condition and results of operations.

We manufacture our products at several manufacturing facilities located in Lansing, Michigan; Lexington, Kentucky; Randolph, Wisconsin; Fort Collins, Colorado; and Ayr, Scotland. We offer genomic services from facilities located in Lincoln, Nebraska and Davis, California. Any disruption in our production facilities or inability to utilize our service facilities for any length of time could have an adverse effect on our business, financial condition and results of operations.

The development of new products entails substantial risk of failure.

We are continually developing new products for which we believe there should be significant market demand. We cannot assure that we will successfully develop commercially viable products, that the products will be developed on a timely basis to meet market demand or that the relevant market will be properly identified. If we expend substantial resources in developing an unsuccessful product, operating results could be adversely affected.

Our international operations are subject to different product standards as well as other operational risks.

In fiscal 2013, sales to customers outside of the United States accounted for 40.1% of the Company’s total revenue. We expect that our international business will continue to account for a significant portion of our total revenue. Foreign regulatory bodies may establish product standards different from those in the U.S. and with which the Company’s current products do not comply. Our inability to design products that comply with foreign standards could have a material adverse effect on our future growth. Other risks related to our sales to customers outside of the United States include possible disruptions in transportation, difficulties in building and managing foreign distribution, fluctuation in the value of foreign currencies, changes in import duties and quotas and unexpected economic and political changes in foreign markets. These factors might adversely affect international sales and our overall financial performance.

The markets for our products are extremely competitive, and our competitors may be able to utilize existing resource advantages to our detriment.

The markets in which the Company competes are subject to rapid and substantial changes in technology and are characterized by extensive research and development and intense competition. Many of our competitors and potential competitors have greater financial, technical, manufacturing, marketing, research and development and management resources than we do. These competitors might be able to use their resources, reputations and ability to leverage existing customer relationships to give them a competitive advantage over us. They might also succeed in developing products that are more reliable and effective than our products, make additional measurements, are less costly than our products or provide alternatives to our products.

We are dependent on the agricultural marketplace, which is affected by factors beyond our control.

Our primary customers are in the agricultural and food production industries. Economic conditions affecting agricultural industries are cyclical and are dependent upon many factors outside our control, including weather conditions or changes in consumption patterns or commodity prices. An economic downturn in the agricultural marketplace could adversely affect our sales.

Our quarterly operating results are subject to significant fluctuations.

We have experienced, and may experience in the future, significant fluctuations in our quarterly operating results. The mix of products sold and the acceptance of new products, in addition to other factors, could contribute to this quarterly variability. We operate with relatively little backlog and have few long-term customer contracts. Substantially all of our product revenue in each quarter results from orders received in that quarter. In addition, our expense levels are based, in part, on expectation of future revenue levels. A shortfall in expected revenue could, therefore, result in a disproportionate decrease in our net income.

Our success is highly dependent on our ability to obtain protection for the intellectual property utilized in our products.

Our success and ability to compete depends in part upon our ability to obtain protection in the United States and other countries for our products by establishing and maintaining intellectual property rights relating to or incorporated into our technology and products.

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Patent applications filed by the Company may not result in the issuance of patents or, if issued, may not be issued in a form that will be commercially advantageous to us. Even if issued, patents may be challenged, narrowed, invalidated or circumvented, which could limit our ability to stop competitors from marketing similar products or limit the length of time of patent protection we may have for our products. We also cannot assure that our nondisclosure agreements, together with trade secrets and other common law rights, will provide meaningful protection for the Company’s trade secrets and other proprietary information. Moreover, the laws of some foreign jurisdictions may not protect intellectual property rights to the same extent as in the United States, and many companies have encountered significant difficulties in protecting and defending such rights in foreign jurisdictions. If we encounter such difficulties or we are otherwise precluded from effectively protecting our intellectual property rights domestically or in foreign jurisdictions, we may incur substantial costs and our business, including our business prospects, could be substantially harmed.

From time to time, the Company has received notices alleging that the Company’s products infringe third party proprietary rights. Whether the manufacture, sale or use of current products, or whether any products under development would, upon commercialization, infringe any patent claim will not be known with certainty unless and until a court interprets the patent claim in the context of litigation. When an infringement allegation is made against us, we may seek to invalidate the asserted patent claim and/or to allege non-infringement of the asserted patent claim. In order for us to invalidate a U.S. patent claim, we would need to rebut the presumption of validity afforded to issued patents in the United States with clear and convincing evidence of invalidity, which is a high burden of proof. The outcome of infringement litigation is subject to substantial uncertainties, and also the testimony of experts as to technical facts upon which experts may reasonably disagree. Our defense of an infringement litigation lawsuit could result in significant expense. Regardless of the outcome, infringement litigation could significantly disrupt our marketing, development and commercialization efforts, divert our management’s attention and consume our financial resources. In the event that we are found to infringe any valid claim in a patent held by a third party, we may, among other things, be required to:

Any development or acquisition of non-infringing products or technology or licenses could require the expenditure of substantial time and other resources and could have a material adverse effect on our business and financial results. If we are required to, but cannot, obtain a license to valid patent rights held by a third party, we would likely be prevented from commercializing the relevant product, or from further manufacture, sale or use of the relevant product.

We are subject to substantial governmental regulation.

A portion of our products and facilities are regulated by various domestic and foreign government agencies, including the U.S. Department of Agriculture, the U.S. Food and Drug Administration and the Environmental Protection Agency. Although less than 10% of our revenues are currently derived from products requiring government approval prior to sale, a significant portion of our revenues is derived from products used to monitor and detect the presence of residues that are regulated by various government agencies. Furthermore, the Company’s growth may be adversely affected by the implementation of new regulations. The Company is not aware of any failures to comply with applicable laws and regulations although there can be no assurance that the costs of compliance or failure to comply with any obligations would not impact the business negatively.

We are dependent on key employees.

Our success depends, in large part, on our CEO, president and other members of our management team. Our loss of any of these key employees could have a material adverse effect on the Company. We maintain certain incentive plans for key employees, and most of these employees have been with the Company in excess of five years. However, we have not executed long-term employment agreements with any of these employees and do not expect to do so in the foreseeable future. Our success also depends, significantly, on our ability to continue to attract such personnel. We cannot assure that we will be able to retain our existing personnel or attract additional qualified persons when required and on acceptable terms.

Lon Bohannon, Neogen’s President and COO, has announced his retirement effective August 31, 2013. He is being replaced by Stephen Snyder, who began employment at Neogen on June 24, 2013. Mr. Snyder comes to Neogen with 26 years’ experience in leadership roles with both Monsanto and Cargill. Most of his career has been devoted to technical, financial and marketing activities of food related businesses.

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Our business may be subject to product liability claims.

The manufacturing and distribution of the Company’s products involve an inherent risk of product liability claims being asserted against us. Regardless of whether we are ultimately determined to be liable or our products are determined to be defective, we might incur significant legal expenses not covered by insurance. In addition, product liability litigation could damage our reputation and impair our ability to market our products, regardless of the outcome. Litigation could also impair our ability to retain product liability insurance or make our insurance more expensive. Although the Company currently maintains liability insurance, we cannot assure that we will be able to continue to obtain such insurance on acceptable terms, or that such insurance will provide adequate coverage against all potential claims. If we are subject to an uninsured or inadequately insured product liability claim, our business, financial condition and results of operations could be adversely affected.

Market prices for securities of technology companies are highly volatile.

The market prices for securities of technology companies have been volatile in the past and could continue to be volatile in the future. Fluctuations in our financial performance from period to period could have a significant impact on the market price of our common shares.

Operating results could be negatively impacted by economic, political or other developments in countries in which we do business.

Future operating results could be negatively impacted by unstable economic, political and social conditions, including but not limited to fluctuations in foreign currency exchange rates, political instability, or changes in the interpretation or creation of laws and regulations or administrative actions in each of the countries where the Company conducts business, including the United States. Additionally, the Company operates in multiple income tax jurisdictions and must determine the appropriate allocation of income to each of these jurisdictions based on current interpretations of complex income tax regulations. Income tax audits associated with the allocation of income and other complex issues may result in significant income tax adjustments that could negatively impact the Company’s future operating results.

Neogen owns several separate buildings located in Lansing, Michigan. A 26,000 square foot building located at 620 Lesher Place includes corporate administrative offices, food safety sales and marketing offices and research facilities. A 12,000 square foot building located at 600 Lesher Place is used for corporate accounting and human resources. Three adjacent buildings, located at 703, 717 and 720 Shiawassee, total 40,000 square feet and are used for manufacturing and warehousing of food safety products. Two buildings on Hosmer Street with a combined total of 49,000 square feet are used for manufacturing and warehousing of dehydrated culture media and veterinary instruments, and warehousing of a significant portion of our food safety products. A 55,000 square foot building at 1614 East Kalamazoo Street is used for corporate administration, research, manufacturing of certain food safety products and production of vaccines.

Animal Safety sales and marketing, diagnostic test kit manufacturing, warehousing and distribution of certain Animal Safety products takes place from an 82,000 square foot Company owned facility at 944 Nandino Drive in Lexington, Kentucky.

The Company owns a 128,000 square foot office, manufacturing and warehouse facility located at 1847 Mercer Road in Lexington, Kentucky, utilized for its Animal Safety operations. Animal Safety currently occupies approximately 100,000 square foot of the facility; there are also tenants occupying a portion under operating leases of 1-2 years in the future. This facility will provide the Company with additional office, production and warehouse space for future expansion. Pharmaceutical, supplement and topical product manufacturing, which previously took place in 16,000 square foot of rented space in Lexington, Kentucky, was moved to the Mercer Road facility in early 2012.

Animal Safety researchers occupy 7,000 square feet of space in St. Joseph, Michigan. Originally occupied by International Diagnostics Systems Inc., this space now houses research and development labs at a monthly cost of $6,500. The lease extends through May 2016.

Neogen Europe Ltd. operations take place in 38,000 square feet in Auchincruive, Ayrshire, Scotland, which the Company purchased in 2010. The facility is adjacent to the campus of the Scottish Agricultural College in Ayr. In fiscal year 2013, the Company purchased an additional 36,000 square foot facility that is adjacent to the existing operations at a cost of approximately $1.5 million.

Rodenticide and disinfectant manufacturing and warehousing is conducted in 105,000 square feet of Company owned buildings at 110 Hopkins Drive in Randolph, Wisconsin.

The Company’s GeneSeek Inc. subsidiary, which was acquired in fiscal year 2010, operates in 13,569 square feet of leased space in Lincoln, Nebraska. The lease runs through February 28, 2014 at a monthly rate of $18,500 and could extend to May 31, 2014.

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The Company acquired the assets of Scidera Genomics LLC in January 2013; this operation occupies 10,579 square feet of lab and office space in Davis, California under an existing agreement through August 2013 at a monthly rent of $17,830.

The Company’s Macleod subsidiary manufactures Uniprim in 14,426 square feet of rented space in Fort Collins, Colorado. The lease runs through April 1, 2014 at a rate of $9,780 per month.

These properties are in good condition, well-maintained, and generally suitable and adequate to carry on the Company’s business.

Neogen is subject to certain legal proceedings in the normal course of business that, in the opinion of management, should not have a material effect on its future results of operations or financial position.

No matters were submitted to a vote of security holders during the fourth quarter of the fiscal year covered by this report.

PART II

PURCHASES OF EQUITY SECURITIES

MARKET INFORMATION:

Neogen Common Stock is traded on the NASDAQ Global Select Market under the symbol “NEOG”. The following table sets forth, for the fiscal periods indicated, the high and low sales prices for the Common Stock as reported on the NASDAQ Stock Market.

HOLDERS:

As of July 30, 2013, there were approximately 356 stockholders of record of Common Stock that management believes represents a total of approximately 7,391 beneficial holders.

DIVIDENDS:

Neogen has never paid any cash dividends on its Common Stock and does not anticipate paying any cash dividends in the foreseeable future.

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The following graph compares the cumulative 5-year total return to shareholders on Neogen Corporation’s common stock relative to the cumulative total returns of the NASDAQ Composite index and the NASDAQ Medical Equipment index. The graph assumes that the value of the investment in the company’s common stock and in each of the indexes (including reinvestment of dividends) was $100 on 5/31/2008 and tracks it through 5/31/2013.

The stock price performance included in this graph is not necessarily indicative of future stock price performance.

Issuer Purchases of Equity Securities

In December 2008 the Board of Directors authorized management to repurchase up to a total of 750,000 shares of its common stock in open market transactions. The Company made no purchases of common stock in fiscal year 2013.

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The following tables set forth selected consolidated financial data of Neogen for each of the five fiscal years ended May 31, 2013. The selected consolidated financial data presented below have been derived from the Company’s consolidated financial statements. This financial data should be read in conjunction with the consolidated financial statements, related notes and other financial information appearing elsewhere in this Form 10-K.

The information in this Management’s Discussion and Analysis of Financial Condition and Results of Operations contains both historical financial information and forward-looking statements. Neogen Corporation management does not provide forecasts of future financial performance. While management is optimistic about the Company’s long-term prospects, historical financial information may not be indicative of future financial results.

Any statements contained herein that are not statements of historical fact may be deemed to be forward-looking statements. Without limiting the foregoing, the words “believes,” “anticipates,” “plans,” “expects,” “seeks,” “estimates,” and similar expressions are intended to identify forward-looking statements. There are a number of important factors, including competition, recruitment and dependence on key employees, impact of weather on agriculture and food production, identification and integration of acquisitions, research and development risks, patent and trade secret protection, government regulation and other risks detailed from time to time in the Company’s reports on file at the Securities and Exchange Commission, that could cause Neogen Corporation’s results to differ materially from those indicated by such forward-looking statements, including those detailed in this “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

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In addition, any forward-looking statements represent management’s views only as of the day this Report on Form 10-K was first filed with the Securities and Exchange Commission and should not be relied upon as representing management’s views as of any subsequent date. While management may elect to update forward-looking statements at some point in the future, it specifically disclaims any obligation to do so, even if its views change.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

The discussion and analysis of the Company’s financial condition and results of operations are based on the consolidated financial statements that have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these financial statements requires that management make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an ongoing basis, management evaluates the estimates, including but not limited to those related to receivable allowances, inventories and intangible assets. These estimates are based on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

The following critical accounting policies reflect management’s more significant judgments and estimates used in the preparation of the consolidated financial statements.

Revenue Recognition

Revenue from products and services is recognized when a purchase order has been received, the product has been shipped or the service performed, the sales price is fixed and determinable, and collection of any receivable is probable. To the extent customer payment is received before all recognition criteria has been met, these revenues are initially deferred and later recognized in the period that all recognition criteria has been met. Where right of return exists, allowances are made at the time of sale to reflect expected returns based on historical experience.

Accounts Receivable Allowance

Management attempts to minimize credit risk by reviewing customers’ credit history before extending credit and by monitoring credit exposure on a regular basis. An allowance for possible losses on accounts receivable is established based upon factors surrounding the credit risk of specific customers, historical trends and other information. Collateral or other security is generally not required for accounts receivable. Once a receivable balance has been determined to be uncollectible, that amount is written off to the allowance for doubtful accounts.

Inventory

A reserve for obsolete and slow moving inventory has been established and is reviewed at least quarterly based on an analysis of the inventory taking into account the current condition of the asset as well as other known facts and future plans. The amount of reserve required to record inventory at lower of cost or market may be adjusted as conditions change. Product obsolescence may be caused by shelf-life expiration, discontinuance of a product line, replacement products in the marketplace or other competitive situations.

Goodwill and Other Intangible Assets

Goodwill represents the excess of purchase price over fair value of tangible net assets of acquired businesses after amounts are allocated to other identifiable intangible assets. Other intangible assets include customer relationships, trademarks, licenses, trade names, covenants not-to-compete and patents. Amortizable intangible assets are amortized on either an accelerated or a straight-line basis over five to 20 years. The Company reviews the carrying amounts of goodwill and other non-amortizable intangible assets annually, or when indications of impairment exist, to determine if such assets may be impaired. If the Company’s qualitative assessment concludes that it is probable that an impairment exists, or the Company skips the qualitative assessment, then the Company performs a quantitative assessment. If the carrying amounts of these assets are deemed to be less than fair value based upon a discounted cash flow analysis and comparison to comparable EBITDA multiples of peer companies, such assets are reduced to their estimated fair value and a charge is made to operations.

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Long-lived Assets

Management reviews the carrying values of its long-lived assets to be held and used, including definite-lived intangible assets, for possible impairment whenever events or changes in business conditions warrant such a review. The carrying value of a long-lived asset is considered impaired when the anticipated separately identifiable undiscounted cash flows over the remaining useful life of the asset are less than the carrying value of the asset. In such an event, fair value is determined using discounted cash flows and if lower than the carrying value, impairment is recognized through a charge to operations.

Equity Compensation Plans

ASC 718 – Compensation – Stock Compensation addresses the accounting for share-based employee compensation. Further information on the Company’s equity compensation plans, including inputs used to determine fair value of options is disclosed in Note 5 to the consolidated financial statements. ASC 718 requires that share options awarded to employees and shares of stock awarded to employees under certain stock purchase plans be recognized as compensation expense based on their fair value at grant date. The fair market value of options granted under the Company’s stock option plans was estimated on the date of grant using the Black-Scholes option-pricing model using assumptions for inputs such as interest rates, expected dividends, volatility measures and specific employee exercise behavior patterns based on statistical data. Some of the inputs used are not market-observable and have to be estimated or derived from available data. Use of different estimates would produce different option values, which in turn would result in higher or lower compensation expense recognized.

To value options, several recognized valuation models exist. None of these models can be singled out as being the best or most correct one. The model applied by the Company is able to handle some of the specific features included in the options granted, which is the reason for its use. If a different model were used, the option values would differ despite using the same inputs. Accordingly, using different assumptions coupled with using a different valuation model could have a significant impact on the fair value of employee stock options. Fair value could be either higher or lower than the ones produced by the model applied and the inputs used.

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RESULTS OF OPERATIONS

Executive Overview

Total revenue of $207,528,000 in fiscal 2013 represented a 13% increase compared to revenue of $184,046,000 in fiscal 2012. Net income attributable to Neogen for 2013 was $27,190,000, or $1.12 per fully diluted share, compared to $22,513,000, or $0.94 per fully diluted share, in fiscal 2012. The Company’s percentage of revenues from customers outside the United States was 40.1% of total revenues in 2013 compared to 41.7% of total revenues in 2012. Cash flow from operations for 2013 was $26,561,000, compared to $22,277,000 in 2012, an increase of 19%.

Consolidated gross margins increased from 50.2% in 2012 to 52.8% in 2013, due primarily to shifts in product mix within the Company’s Animal Safety segment, and to a lesser extent, a higher proportion of overall sales growth derived from the Food Safety segment, which has higher than average gross margins. Margins improved in the Animal Safety segment as the result of higher sales of a canine thyroid replacement product, a recovery in rodenticide sales from a weak 2012, and new product revenues from acquisitions, all of which are higher gross margin products within the segment. Operating expenses as a percentage of revenues increased from 31.9% in 2012 to 33.1% in 2013, as the Company continued to make investments in personnel and other infrastructure initiatives, which it believes should lead to increased market penetration and improved operating performance in future periods.

The Animal Safety segment benefitted from acquisitions in 2013, with revenue from acquisitions totaling $5.8 million during the year. The Uniprim product line of veterinary antibiotics, acquired from Macleod Pharmaceuticals in October 2012, helped to improve gross margins within Animal Safety. GeneSeek added to its offerings and capabilities with the Igenity acquisition in late fiscal year 2012 and the Scidera acquisition in January 2013.

Neogen Europe recorded a revenue increase of more than 20% in 2013. Sales were particularly strong in Germany, where unusually wet, cool weather during the fall growing season resulted in a mycotoxin outbreak in the small grain crops; growth in the United Kingdom was due to increased meat speciation testing in the second half of the year, the result of mislabeled meat products. Neogen Europe also achieved significant increases in sales of services to genomics customers in the EU. Neogen Latinoamerica and Neogen do Brasil continued to build out their sales and operations infrastructures, resulting in improved market presence, and recorded revenue gains of more than 10% and 40%, respectively, in 2013 over 2012, albeit from relatively small bases.

Service revenue of $23,394,000 was an increase of 22% over the prior year, primarily the result of the increases in genomic services at Neogen Europe, which reports within the Food Safety segment; additionally, DNA testing benefitted from the Igenity and Scidera acquisitions during the year and also from strong market acceptance of new products for the cattle industry.

REVENUES

Year Ended May 31, 2013 Compared to Year Ended May 31, 2012

The Company’s Food Safety segment revenues were $106.2 million in 2013, 17% higher than 2012, with increases in each major product category. Sales of Natural Toxins, Allergens & Drug Residues products increased 20% in 2013 compared to the prior year. The increase was led by sales of aflatoxin test kits, readers, and accessories, resulting from an outbreak in the United States caused by unusually hot and dry conditions. Additionally, cool wet growing conditions in Germany in fall 2012 contributed to an outbreak of deoxynivalenol, or DON, in the small grains crop, and resulted in increased sales of the Company’s test kits to detect the toxin. Allergen test kit revenues continued to achieve solid growth with an increase of 24% in fiscal 2013 compared to fiscal 2012. This

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product line had core growth of 16% this year, and also benefitted from a significant increase in demand for meat speciation testing in Europe in the second half of the year, the result of the discovery of mislabeled meat products. Originally, horse meat was found in products labeled as beef; further testing also found instances of pork and other meat products in beef, as well as tilapia being sold as whitefish. These are all examples of economic adulteration of food, which has become quite problematic within the food safety industry, and should result in higher ongoing levels of speciation testing in the future. Also in this category, sales of Drug Residues products, primarily used to determine the presence of antibiotics in raw fluid milk from dairy animals, increased 3% compared to the prior year.

Sales of Bacterial and General Sanitation products increased 6% in 2013, compared with 2012. Within this category, General Sanitation products, designed to measure environmental cleanliness, achieved growth of 8%; increased sales of filters and ampoule media products, the result of increased penetration in the beverage segment, more than offset lower equipment sales to international markets. The Company’s line of pathogen testing products grew by 6% in 2013; the new ANSR pathogen detection system gained traction during the latter half of the year, assisted by a focused marketing program.

Dehydrated Culture Media and Other Sales increased 22% for the year. Contributions from genomics service revenues to European customers resulting from increased sales staffing and the introduction of new service offerings, led the growth in the category. Sales of Acumedia products to the traditional markets in the US were up 17% over a weak 2012. Additionally, customers affected by the aflatoxin and DON outbreaks significantly increased purchases of miscellaneous lab supplies necessary for processing samples, which are recorded in this category.

Revenue for the Animal Safety segment was $101.4 million, an increase of 9% compared to 2012. The acquisitions of Igenity, Macleod Pharmaceuticals and Scidera Genomics contributed $5.8 million to revenues in this segment in fiscal 2013.

Life Sciences and Other revenues decreased 6% in FY-13 compared to FY-12. Within this category, racing kits were down 18% due to state lab closures and consolidations and the continued decline of the racing industry in the U.S. Food residues were down 28% due to lower ractopamine kit sales from lost business in China as government laboratories there have been purchasing kits made by Chinese manufacturers; further, a large user of this kit ceased using ractopamine, a feed additive used to promote leanness in animals in its operations, and stopped buying the Company’s kits. Partially offsetting these losses was a 4% increase in sales to the forensics market. Vaccine revenues decreased 11% compared to the prior year, the result of a decline in the number of horses in the U.S. and the timing of orders by a large international distributor.

Rodenticide and Disinfectant revenues increased by 2% compared to 2012. Rodenticide sales increased 20% due to seasonal conditions, new product formulations, marketing campaigns, and a prior year which was negatively affected by EPA labeling changes. Almost entirely offsetting this increase was an 11% decrease in lower-margin sales of cleaners and disinfectants. The decrease was primarily due to competition from lower-priced generics, particularly internationally, lack of disease outbreak for most of the year, which led to lower demand, and timing of large international orders.

Veterinary Instruments and Other revenues increased 18% in FY-13 compared to FY-12. Within this category, the Company benefitted from sales of the veterinary antibiotic, Uniprim, acquired in the Macleod Pharmaceuticals purchase, and a 113% increase in the small animal supplements line due to new business captured on canine thyroid replacement products. Partially offsetting these gains were a 27% decrease in vitamin supplements, due to unusually high prior year sales caused by products coming off backorder and a decline in the number of cattle, and a 13% decrease in hoof and leg care products, due to lower animal counts and difficult financial conditions in the dairy industry.

DNA Testing revenues increased 9% in 2013 compared to the prior year. The Company gained new business resulting from the Igenity and Scidera Genomics acquisitions and had strong market acceptance of new products for cattle parentage testing in the latter half of the year.

Year Ended May 31, 2012 Compared to Year Ended May 31, 2011

The Company’s Food Safety segment revenues grew by 7% overall in 2012, with increases in each major product category compared to 2011. Organic revenue growth was 6% in the segment, compared to the prior year. The increase in Natural Toxins, Allergens and Drug Residues of 6% in 2012 included strong contributions in Drug Residues revenues, primarily tests to determine the presence of antibiotics in dairy animals, which increased 11% compared to 2011. Natural Toxins test kits revenue increased 1% in 2012 compared to 2011, as increased aflatoxin test kit revenues, caused by abnormally warm and dry weather conditions in the 2011 growing season, offset year-over-year declines in DON revenues resulting from an outbreak in the 2010 growing season which did not recur in fiscal year 2011. Allergen product revenues increased by 6% compared to 2011, as increased worldwide concern over the presence of allergens in finished food products positively affected sales.

Bacterial and General Sanitation revenues increased in 2012 by 11% compared with 2011, marking continued double digit increases. While sales of diagnostic test kits to detect pathogens such as E. coli, Listeria and Salmonella remained relatively flat with a 1% increase in product revenues, Soleris microbial detection instruments and vials, designed to detect the presence of yeasts, molds and other contaminants in foods, increased by 20% compared to 2011. AccuPoint readers and device sales, used to detect the cleanliness of contact surfaces in food preparation environments, achieved an 8% increase in product revenues over 2011. Continued market acceptance of these products was strong.

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Dehydrated Culture Media and Other revenues increased by 3% in 2012, as declines in domestic traditional dehydrated culture media were offset with increased international revenues, certain genomics service revenues to a number of European customers and higher shipping revenues.

Animal Safety revenues increased by 7% overall and included minimal revenues from the Igenity acquisition, which closed in May 2012. Life Sciences and Other revenues increased 4% in 2012 with broad-based increases from existing customers and new key accounts with increases in OEM Reagent products leading the increases.

Vaccine revenues increased by 16% compared with 2011, as effective marketing programs to animal practitioners resulted in continued utilization of the Company’s equine vaccine products.

Rodenticide and Disinfectant revenues decreased by 6% in comparison with 2011 following a year in which revenue increased by 17% due to a change in the law regarding product packaging for rodenticides, which went into effect on June 4, 2011. This law resulted in strong sales of rodenticides in the second half of 2011, which the Company believes, pulled sales which might otherwise have occurred in 2012, into 2011. The Company’s line of cleaners and disinfectants continued to be well accepted in the market, and increased 10% in 2012 compared to 2011. The product line continues to be a strong synergistic fit as it is marketed with the Company’s full line of biosecurity solutions.

Veterinary Instruments and Other products increased 21% for the year due to increased market penetration by several large distributors, both domestic and international, in 2012. Animal Care products led the revenue increases at 27%, disposable gloves and apparel increased by 25%, and Ideal Instruments product offerings, such as needles and syringe products, increased by 10% for the year, with broad based increases in several other product groups.

DNA Testing revenues, resulting from the purchase of GeneSeek Inc. in April 2010, increased 3% in 2012, compared to 2011. The acquisition of the Igenity product line in May of 2012 did not contribute significantly in the year.

COST OF REVENUES

Cost of revenues increased 7% in 2013 and 8% in 2012 in comparison with the prior years. This compares with revenue increases of 13% and 7% in 2013 and in 2012, respectively. Expressed as a percentage of revenues, cost of revenues was 47%, 50% and 49% in 2013, 2012, and 2011, respectively. The decrease in cost of revenues, expressed as a percentage of sales, in 2013 compared to 2012 was due to product mix changes in the Animal Safety segment and higher sales in the Food Safety segment, as a percentage of the total. Margins improved in the Animal Safety segments as the result of higher sales of a canine thyroid replacement product, recovering rodenticide sales from a weak 2012, and new product revenues from acquisitions, all of which are higher than average gross margin products within the segment. The increase in cost of goods sold, expressed as a percentage of sales, in 2012 compared to 2011 was also due to product mix within the Animal Safety segment.

Food Safety gross margins were 64%, 65% and 64% in 2013, 2012 and 2011, respectively. The minor changes in margins between periods relate primarily to changes in product mix. Food Safety segment sales were 51.2% of overall sales in 2013 compared to 49.5% in both 2012 and 2011. The sales shift towards diagnostic products, which have higher margins, contributed to the Company’s overall gross margin improvement in 2013.

Animal Safety gross margins were 41%, 36% and 37% in 2013, 2012 and 2011, respectively. The improvement in the margins from 2012 to 2013 was due to a shift in product mix resulting from higher sales of small animal supplements, rodenticides and the new Uniprim product line acquired from Macleod Pharmaceuticals. Additionally, GeneSeek benefitted from higher margins due to new service offerings acquired in the Igenity and Scidera Genomics purchases. The change in the margins from 2011 to 2012 was primarily due to product mix, as a decline in rodenticide revenues, which generally have a higher gross margin, were offset by increases in cleaners and disinfectants, which are a lower margin product.

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OPERATING EXPENSES

Sales and marketing expenses increased by 16% in 2013 and by 17% in 2012, each compared with the prior year. As a percentage of sales, sales and marketing expense increased to 20% in 2013 from 19% in 2012 and from 17% in 2011. The 2012 and 2013 increases were primarily the result of the significant investment in sales and marketing personnel which the Company announced and undertook beginning in late 2011. Since 2011, 48 positions have been added, an increase of 26%, consisting of additional field sales, marketing, and technical service personnel. This investment was designed to improve the Company’s sales and marketing capabilities, increase market penetration and facilitate the Company’s domestic and international expansion opportunities. Other significant expense increases were for royalties, based on increased sales of products which require royalty payments, shipping expenses, corresponding to the increase in revenues, higher advertising costs and marketing promotions.

General and administrative expenses increased 19% in 2013 compared to 2012 and by 13% in 2012 compared to 2011. The increase in 2013 resulted primarily from increased salaries due to increases in personnel, investments in information technology infrastructure necessary to support the growth of the Company, increased amortization relating to businesses acquired and legal expenses related to the protection of the Company’s intellectual property.

Research and development expenses increased 17% in 2013 compared to 2012 and decreased by 3% in 2012 in comparison with 2011. As a percentage of revenue these expenses were 4% in 2013, 2012 and 2011. Although some fluctuation in research and development expenses will occur across periods, management expects research and development expenses to approximate 3% to 5% of revenues. Certain Company products, particularly on the Animal Safety side of the business, require relatively less investment in research and development expenses. For those products requiring support by research and development, the Company estimates that it spends 8% to 10% of revenues in its research and development efforts. The increase in 2013 is the result of the significant costs resulting from the testing and commercialization of the new products introduced during the year.

OPERATING INCOME

During fiscal year 2013, the Company’s operating income increased by 21% compared to 2012 and decreased in 2012 by 6% when compared to 2011. As a percentage of revenues it was 20%, 18% and 21% in 2013, 2012 and 2011 respectively. The increase in operating income in 2013 was driven by the 13% increase in revenues which, when combined with the improved gross margins, more than offset the increased operating expenses. The decline in operating income in 2012 was due primarily to the increases in selling, general and administrative expenses, which more than offset the higher gross margins resulting from increased revenue. In general, the Company has been successful in improving its operating income from revenue and gross margin growth from existing products and acquisitions and through control of manufacturing, distribution and administrative costs. In each of the last two fiscal years, the Company’s operating expenses have risen, on a percentage basis, faster than the increase in revenues. This is the result of the investment the Company has been making in its sales, marketing and operations infrastructure, to position the Company for future growth opportunities.

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OTHER INCOME (EXPENSE)

Other Income (Expense) consists principally of royalty income, interest income from investing the Company’s excess cash balances, the impact of foreign currency transactions, adjustments to contingent considerations and other miscellaneous items.

In 2013, Other Income primarily consisted of royalty income totaling $364,000, interest income of $144,000, and $100,000 for the reversal of the secondary payment obligation relating to the Igenity acquisition, due to lower than projected sales for the first year. This was offset by $113,000 of secondary payment expense for the final year relating to the GeneSeek acquisition and losses on foreign currency transactions totaling $166,000.

In 2012, Other Income primarily consisted of royalty income totaling $329,000 in 2012, interest income of $107,000, and $154,000 for the reversal of the secondary payment obligation relating to the GeneSeek acquisition, due to lower than projected profitability for the year, offset by losses on foreign currency transactions totaling $531,000.

In 2011, Other Income included a charge of $787,000 related to an increase in the secondary payment obligation for the GeneSeek acquisition due to the achievement of specified profitability levels, royalty income of $317,000, interest income of $95,000, and gains from foreign currency transactions of $281,000.

PROVISION FOR INCOME TAXES

The tax provision was 34% of pretax income in 2013, 34% in 2012 and 35% in 2011. Fluctuations in the tax rate from the 35% corporate rate is primarily due to tax credits related to manufacturing and R & D activities partially offset by the provision for state taxes. At the end of 2011, the Company was under audit by the Internal Revenue Service for its 2009 fiscal year; in 2012 this audit was expanded to include the 2010 fiscal year as well. The audit concluded in late 2012 with a small favorable adjustment; thus, amounts totaling $550,000 which had been reserved as uncertain tax positions were reversed, resulting in an effective tax rate of 33.7% for 2012. Absent this adjustment, the Company’s 2012 tax rate would have been 35.5%, compared to 34.3 % in 2012 and 35.2% in 2011.

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NET INCOME AND NET INCOME PER SHARE

Net income increased by 21% in 2013 and decreased by 1% in 2012 in comparison with the prior year. As a percentage of revenue, net income was 13% in 2013, 12% in 2012 and 13% in 2011.

FUTURE OPERATING RESULTS

Neogen Corporation’s future operating results involve a number of risks and uncertainties. Actual events or results may differ materially from those discussed in this report. Factors that could cause or contribute to such differences include, but are not limited to, the factors discussed below as well as those discussed elsewhere in this report. Management’s ability to grow the business in the future depends upon its ability to successfully implement various strategies, including:

FINANCIAL CONDITION AND LIQUIDITY

On May 31, 2013, the Company had $50,032,000 in cash and cash equivalents, $35,337,000 in marketable securities, and working capital of $150,728,000. The Company has a financing agreement with a bank providing for an unsecured revolving line of credit of $12,000,000 which expires on September 1, 2014. There were no advances against this line of credit during 2013, 2012 and 2011 and no balance outstanding at May 31, 2013 and 2012. For the year ended May 31, 2013, cash generated from operating activities was $26,561,000; proceeds from stock option activity provided an additional $12,646,000 of cash. For the same period, additions to property and equipment and business acquisitions used cash of $8,897,000 and $13,318,000, respectively.

Accounts receivable increased by $3,085,000, or 9%, compared to May 31, 2012, primarily due to the increase in revenues. These accounts are being actively managed and no losses thereon in excess of amounts reserved are currently expected. Days sales outstanding, a measurement of the time it takes to collect receivables, decreased from 60 days at May 31, 2012 to 57 days at May 31, 2013.

Inventory levels increased by $3,323,000, or 9%, in 2013 compared to 2012. Increases were due primarily to the need to support higher sales volumes. During 2013, the Company continued programs aimed at improving inventory turnover and expects to maintain those programs into the future.

In December 2012, Neogen Europe purchased Oswald Hall, a 36,000 square foot building in Ayr, Scotland, for approximately $1,500,000 to accommodate its future growth needs. The Company completed construction of a warehouse in Randolph, Wisconsin in early 2012. It also purchased a 132,000 square foot warehouse facility in Lexington, Kentucky in August 2011 for $4.9 million. These facilities are generally believed to be adequate to support the Company’s existing operations in the near term.

Neogen has been profitable from operations for its last 81 quarters and has generated positive cash flow from operations during this period. However, the Company’s cash on hand and current borrowing availability may not be sufficient to meet the Company’s cash requirements to commercialize products currently under development or its plans to acquire additional businesses, technology and products that fit within the Company’s strategic plan. Accordingly, the Company may be required to or may choose to issue equity securities or enter into other financing arrangements for a portion of the Company’s future capital needs.

The Company is subject to certain legal and other proceedings in the normal course of business that, in the opinion of management, have not had, and are not expected to have, a material effect on its results of operations or financial position.

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CONTRACTUAL OBLIGATIONS

The Company has the following contractual obligations due by period:

NEW ACCOUNTING PRONOUNCEMENTS

See discussion of any New Accounting Pronouncements in Note 1 to Consolidated Financial Statements.

The Company has interest rate and foreign exchange rate risk exposure and no long-term fixed rate investments or borrowings. The Company’s primary interest rate risk is due to potential fluctuations of interest rates for variable rate borrowings and short-term investments.

Because Neogen markets and sells its products throughout the world, it could be affected by weak economic conditions in foreign markets that could reduce the demand for its products. Sales in certain foreign countries as well as certain expenses related to those sales are transacted in currencies other than the U.S. dollar. The Company’s operating results are primarily exposed to changes in exchange rates between the U.S. dollar and the British Pound and the Euro. When the U.S. dollar weakens against foreign currencies, the dollar value of sales denominated in foreign currencies increases. When the U.S. dollar strengthens, the opposite situation occurs.

Neogen has assets, liabilities and operations outside of the United States that are located primarily in Ayr, Scotland where the functional currency is the British Pound Sterling. To a lesser extent it also has assets, liabilities and operations in Mexico where the functional currency is the Mexican Peso and in Brazil where the functional currency is the Real. The Company’s investment in its foreign subsidiaries is considered long-term; accordingly, it does not hedge the net investment nor does it generally engage in other foreign currency hedging activities. It does, however, use strategies to reduce the exposure to currency fluctuations related to payables and receivables.

The response to this item is submitted in a separate section of this report.

There were no disagreements or reportable events with Ernst & Young LLP.

Evaluation of Disclosure Controls and Procedures

An evaluation was performed under the supervision and with the participation of the Company’s management, including the Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the Company’s disclosure controls and procedures (as defined in Rule 13-a-15 (e) under the Securities Exchange Act of 1934) as of May 31, 2013. Based on and as of the time of such evaluation, the Company’s Management, including the Chief Executive Officer and Chief Financial Officer, concluded that the Company’s disclosure controls and procedures were effective as of the end of the period covered by this report to ensure that information required to be disclosed in the reports that are filed or submitted under the Securities and Exchange Act of 1934 is appropriately recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure the information required to be disclosed in the reports that are filed or submitted under the Securities Exchange Act of 1934 is accumulated and communicated to management, including the Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

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Management’s Report on Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rules 13-a-15(f) and 15d-15(f). Under the supervision and with the participation of the company’s management, including the Chief Executive Officer and Chief Financial Officer, an evaluation was conducted as to the effectiveness of internal control over financial reporting as of May 31, 2013, based on the framework in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on that evaluation, management concluded that internal control over financial reporting was effective as of May 31, 2013. The effectiveness of internal control over financial reporting as of May 31, 2013, has been audited by Ernst & Young, LLP, an independent registered public accounting firm, as stated in its attestation report, which is included in Item 8 and is incorporated into this Item 9A by reference.

Changes in Internal Control over Financial Reporting.

No changes in our internal control over financial reporting were identified as having occurred during the quarter ended May 31, 2013 that have materially affected, or are reasonably likely to materially affect, internal control financial reporting.

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Report of Independent Registered Public Accounting Firm

The Board of Directors and Shareholders of Neogen Corporation

We have audited Neogen Corporation and Subsidiaries’ internal control over financial reporting as of May 31, 2013, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (the COSO criteria). Neogen Corporation’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying “Management’s Report on Internal Control Over Financial Reporting”. Our responsibility is to express an opinion on the company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, Neogen Corporation and Subsidiaries maintained, in all material respects, effective internal control over financial reporting as of May 31, 2013, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of Neogen Corporation and Subsidiaries as of May 31, 2013 and May 31, 2012, and the related consolidated statements of income, comprehensive income, equity, and cash flows for each of the three years in the period ended May 31, 2013, and our report dated July 30, 2013 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Grand Rapids Michigan

July 30, 2013

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PART III

Information regarding the Company and certain corporate governance matters appearing under the captions “Election of Directors”, “Audit Committee”, and “Miscellaneous-Section 16(a) Beneficial Ownership Reporting Compliance” in the 2012 proxy statement is included herein by reference.

The Company has adopted a Code of Conduct that applies to all of its directors, officers and employees. The Company has made a copy of this Code of Conduct available on its Website at http://www.neogen.com/Corporate/pdf/CodeOfConduct.pdf.

OFFICERS AND OTHER KEY INDIVIDUALS OF THE REGISTRANT

The officers of Neogen are elected by and serve at the discretion of the Board of Directors. The names and titles of the Company’s officers are set forth below.

There are no family relationships among officers. Information concerning the executive officers of Neogen follows:

Lon M. Bohannon, age 60, joined the Company in October 1985 as Vice President of Finance, was promoted to Chief Financial Officer in June 1987, was promoted to Vice President Administration and Chief Financial Officer in November 1994, was elected to the Board of Directors in October 1996, and was named Chief Operating Officer in September 1999. Mr. Bohannon was named President & Chief Operating Officer in June 2006. He is responsible for all Company operations except research, Neogen Europe, GeneSeek and corporate development. A CPA, he was Administrative Controller for Federal Forge, Inc., a metal forging and stamping firm, from March 1980 until October 1985, and was associated with the public accounting firm of Ernst & Young LLP from June 1975 to March 1980. Mr. Bohannon has announced his intention to retire from the Company, effective August 31, 2013.

Edward L. Bradley, age 53, joined Neogen in February 1995 as Vice President of Sales and Marketing for AMPCOR Diagnostics, Inc. In June 1996, he was made a Vice President of Neogen Corporation. In June 2006, Mr. Bradley was named Vice President Food Safety. From 1988 to 1995, Mr. Bradley served in several sales and marketing capacities for Mallinckrodt Animal Health, including the position of National Sales Manager responsible for 40 employees in its Food Animal Products Division. Prior to joining Mallinckrodt, he held several sales and marketing positions for Stauffer Chemical Company.

James L. Herbert, age 73, has been Chief Executive Officer and a director of the Company since he joined Neogen in June 1982. He served as President from June 1982 through June 2006. From 1999 to 2001 he was Chairman of the Company’s Board; and was again named Chairman in June 2006. He previously held the position of Corporate Vice President of DeKalb Ag Research, a major agricultural genetics and energy company. He has management experience in animal biologics, specialized chemical research, medical instruments, aquaculture, animal nutrition, and poultry and livestock breeding and production.

Kenneth V. Kodilla, age 56, joined the Company in November 2003 as Vice President of Manufacturing. He has responsibility for all manufacturing, inventory management, shipping and quality system operations for the Company’s Food Safety Division in Lansing, Michigan. Prior to Neogen, Mr. Kodilla served as plant manager for Facet Technologies in Atlanta, Georgia from 2001, as Manufacturing Manager for Becton Dickinson and Difco Laboratories from 1988, and as Quality Manager for Lee Laboratories from 1984. Mr. Kodilla’s manufacturing and regulatory experience includes FDA/ISO regulated Class and diagnostic reagents and devices, high volume automated assembly and packaging, materials management and plant operations.

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Dr. Jason W. Lilly, age 39, joined the Company in June 2005 as Market Development Manager for Food Safety. In June 2009, he began to work in the Corporate Development group. He was named Vice President of Corporate Development in December 2011. Prior to joining Neogen, he served in various technical sales and marketing roles at Invitrogen Corporation. Dr. Lilly holds his Ph.D. in Plant Breeding and Plant Genetics from the University of Wisconsin-Madison, and an MBA in Integrative Management from Michigan State University. Dr. Lilly’s technical knowledge and business acumen provides the Company with a strong combination of merger and acquisition skills.

Terri A. Morrical, age 48, joined Neogen Corporation on September 1, 1992 as part of the Company’s acquisition of WTT, Incorporated. She has directed most aspects of the Company’s Animal Safety operations since she joined the Company and currently serves as Vice President in charge of all of the Company’s Animal Safety operations. From 1986 to 1991, she was Controller for Freeze Point Cold Storage Systems and concurrently served in the same capacity for Powercore, Inc. In 1990, she joined WTT, Incorporated as VP/CFO and then became President, the position she held at the time Neogen acquired the business.

Dr. Mark A. Mozola, age 57, became Neogen’s Vice President of Research and Development in 2001 following the Company’s acquisition of GENE-TRAK Systems. He served in various technical and managerial positions at GENE-TRAK Systems for 16 years, most recently as General Manager. He has also served as a Laboratory Director for Silliker Laboratories. Dr. Mozola’s particular technical expertise is in the area of development of modern, rapid methods for the detection of foodborne pathogens.

Steven J. Quinlan, age 50, joined Neogen in January 2011 as Vice President and Chief Financial Officer. Mr. Quinlan came to Neogen following 19 years at Detrex Corporation (1992-2010), the last eight years serving as Vice President-Finance, CFO and Treasurer. He was Corporate Controller at Detrex from 1998-2001, and was Divisional Controller for a number of Detrex operating businesses from 1992-1997. Prior to joining Detrex, Mr. Quinlan was employed by Ford Motor Company from 1989 through 1991 as a Cost Analyst. He was associated with the public accounting firm of Price Waterhouse from 1985-1989.

Dr. Jennifer A. Rice, age 52, joined the Company in February 2009 as Senior Scientific Officer. In October 2010, she was named Vice President and Senior Research Director and has responsibility to manage and lead Neogen’s R&D portfolio. Prior to joining Neogen, Dr. Rice served as Animal Health Global Product Development Leader at Dow AgroSciences. From 1996 to 2004, she held Research Director positions at Biocor Animal Health (2001-2004) and Merial Animal Health (1996-2001). Dr. Rice’s strong background in leading large global Research and Development teams brings a very important management skill to Neogen.

Stephen K. Snyder, age 49, joined the Company in June 2013 as President-Elect and Chief Operating Officer-Elect. He will be responsible for all Company operations except research, Neogen Europe, GeneSeek and corporate development upon Mr. Bohannon’s retirement in August 2013. Prior to joining Neogen, Mr. Snyder served in various commercial, sales and marketing leadership positions in nutrition-oriented food ingredients, high-intensity sweeteners and industrial products with privately-held Cargill based in Minneapolis, Minnesota, from 2001 to 2013. Prior to Cargill, Mr. Snyder was vice president of commercial development involved in the startup of Senomyx, in San Diego, California from 1999 to 2000. He served in a range of commercial and strategic planning roles in specialty chemicals and food ingredients at various locations with St. Louis, Missouri-based Monsanto from 1986 to 1999.

The information required by this Item is incorporated by reference to Neogen’s Proxy Statement to be filed within 120 days of May 31, 2013.

The information required by this Item is incorporated by reference to Neogen’s Proxy Statement to be filed within 120 days of May 31, 2013.

The information required by this item is incorporated by reference to Neogen’s proxy statement to be filed within 120 days of May 31, 2013.

PART IV

(a) (1) and (2) and (c). The response to this portion of ITEM 15 is submitted as a separate section of this report.

(a) (3). The Exhibits listed on the accompanying Exhibits Index, which immediately follows the signature page, is incorporated herein by reference.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized.

Dated: July 30, 2013

Pursuant to the requirements of the Securities Exchange Act of 1934, this Report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

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Neogen Corporation

Annual Report on Form 10-K

Year Ended May 31, 2013

EXHIBIT INDEX

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ANNUAL REPORT ON FORM 10-K

ITEM 15 (a)(1)(2) (3) (a) and (c)

LIST OF FINANCIAL STATEMENTS, EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

YEAR ENDED MAY 31, 2013

NEOGEN CORPORATION

LANSING, MICHIGAN

FORM 10-K—ITEM 15(a)(1) AND (2)

LIST OF FINANCIAL STATEMENTS AND FINANCIAL STATEMENT SCHEDULES

The following consolidated financial statements of Neogen Corporation and subsidiaries are included in ITEM 8:

Report of Independent Registered Public Accounting Firm

Consolidated Balance Sheets—May 31, 2013 and 2012

Consolidated Statements of Income—Years ended May 31, 2013, 2012 and 2011

Consolidated Statements of Comprehensive Income—Years ended May 31, 2013, 2012 and 2011

Consolidated Statements of Equity— Years ended May 31, 2013, 2012 and 2011

Consolidated Statements of Cash Flows— Years ended May 31, 2013, 2012 and 2011

Notes to Consolidated Financial Statements

Schedules for which provision is made in the applicable accounting regulation of the United States Securities and Exchange Commission are not required under the related instructions or are inapplicable and, therefore, have been omitted.

FORM 10-K – Item 15 (a) (3)

A list of Exhibits required to be filed as a part of this report is set forth in the Exhibit Index, which immediately follows the signature page, and is incorporated herein by reference.

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Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of Neogen Corporation

We have audited the accompanying consolidated balance sheets of Neogen Corporation and Subsidiaries (the Company) as of May 31, 2013 and 2012, and the related consolidated statements of income, comprehensive income, equity, and cash flows for each of the three years in the period ended May 31, 2013. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Neogen Corporation and Subsidiaries at May 31, 2013 and 2012, and the consolidated results of their operations and their cash flows for each of the three years in the period ended May 31, 2013, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), Neogen Corporation and Subsidiaries’ internal control over financial reporting as of May 31, 2013, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated July 30, 2013 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Grand Rapids Michigan

July 30, 2013

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Neogen Corporation and Subsidiaries

Consolidated Balance Sheets – Assets

(in thousands)

See accompanying notes to consolidated financial statements.

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Neogen Corporation and Subsidiaries

Consolidated Balance Sheets – Liabilities and Equity

(in thousands, except share and per share)