EKSO BIONICS HOLDINGS, INC. - Quarter Report: 2023 June (Form 10-Q)

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

Ekso Bionics Holdings, Inc.

Condensed Consolidated Balance Sheets

(In thousands, except par value)

The accompanying notes are an integral part of these condensed consolidated financial statements

Ekso Bionics Holdings, Inc.

Condensed Consolidated Statements of Operations and Comprehensive Loss

(In thousands, except per share amounts)

(Unaudited)

The accompanying notes are an integral part of these condensed consolidated financial statements

Ekso Bionics Holdings, Inc.

Condensed Consolidated Statements of Stockholders’ Equity

(In thousands)

(Unaudited)

Ekso Bionics Holdings, Inc.

Condensed Consolidated Statements of Stockholders’ Equity

(In thousands)

(Unaudited)

The accompanying notes are an integral part of these condensed consolidated financial statements

Ekso Bionics Holdings, Inc.

Condensed Consolidated Statements of Cash Flows

(In thousands)

(Unaudited)

The accompanying notes are an integral part of these condensed consolidated financial statements

1.         Organization

Description of Business

Ekso Bionics Holdings, Inc. (the “Company”) designs, develops, and markets exoskeleton products to augment human strength, endurance and mobility. The Company’s exoskeleton technology serves multiple markets and can be utilized both by able-bodied users and by persons with physical disabilities. The Company has marketed devices that (i) enable individuals with neurological conditions affecting gait, including acquired brain injury ("ABI") and multiple sclerosis ("MS"), and spinal cord injury ("SCI"), to rehabilitate and to walk again, (ii) assist individuals with a broad range of upper extremity impairments, and (iii) allow industrial workers to perform difficult repetitive work for extended periods. Founded in 2005, the Company is headquartered in the San Francisco Bay area and listed on the Nasdaq Capital Market under the symbol “EKSO”.

On December 5, 2022, the Company acquired the Human Motion and Control (“HMC”) Business Unit from Parker Hannifin Corporation (“Parker”), an Ohio corporation. The assets acquired from the business unit include intellectual property rights for devices which are U.S. Food and Drug Administration ("FDA")-cleared lower-limb powered exoskeletons that enable task-specific, overground gait training to patients with weakness or paralysis in their lower extremities. Products include Ekso Indego Personal, a light-weight exoskeleton for safe use in most home and community environments, and Ekso Indego Therapy, an adjustable exoskeleton for patients with spinal cord injury and stroke, complementing Ekso’s product offering in outpatient facilities.

Liquidity and Capital Resources

As of June 30, 2023, the Company had an accumulated deficit of $232,566.  Largely as a result of significant research and development activities related to the development of the Company’s advanced technology and commercialization of such technology into its medical device business, the Company has incurred significant operating losses and negative cash flows from operations since inception. In the six months ended June 30, 2023, the Company used $7,117 of cash in its operations. Cash on hand as of June 30, 2023 was $13,307.

As described in Note 10, Notes payable, net, borrowings under the Company’s secured term loan agreement with Pacific Western Bank have a liquidity covenant requiring minimum cash on hand equivalent to the current outstanding principal balance. As of June 30, 2023, $2,000 of cash must remain as restricted. After considering cash restrictions, effective unrestricted cash as of June 30, 2023 is approximately $11,307.

In accordance with Accounting Standards Codification (“ASC”) 205-40, Going Concern, we evaluated whether there are conditions and events, considered in the aggregate, that raise substantial doubt about our ability to continue as a going concern within one year after the date that the consolidated financial statements are issued. This evaluation initially does not take into consideration the potential mitigating effect of our plans that have not been fully implemented as of the date the financial statements are issued. When substantial doubt exists under this methodology, we evaluate whether the mitigating effect of our plans sufficiently alleviates substantial doubt about our ability to continue as a going concern. The mitigating effect of our plans, however, is only considered if both (1) it is probable that the plans will be effectively implemented within one year after the date that the financial statements are issued, and (2) it is probable that the plans, when implemented, will mitigate the relevant conditions or events that raise substantial doubt about our ability to continue as a going concern within one year after the date that the financial statements are issued. In performing this analysis, we excluded certain elements of our operating plan that cannot be considered probable.

Our expectation to generate operating losses and negative operating cash flows in the future and the need for additional funding to support our planned operations raise substantial doubt regarding our ability to continue as a going concern for a period of one year after the date that the financial statements are issued. Management intends to raise funds through one or more financings. However, due to several factors, including those outside management’s control, there can be no assurance that the Company will be able to complete such financings on acceptable terms or in amounts sufficient to continue operating the business under the operating plan. If we are unable to complete sufficient additional financings, management’s plans include delaying or abandoning certain product development projects, cost reduction efforts for our products, and refocused sales efforts to accelerate revenue growth above historical results. We have concluded the likelihood that our plan to successfully reduce expenses to align with our available cash, while reasonably possible, is less than probable. Accordingly, we have concluded that substantial doubt exists about our ability to continue as a going concern for a period of at least 12 months from the date of issuance of these unaudited financial statements. 

The accompanying financial statements have been prepared on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities in the ordinary course of business. The financial statements do not include any adjustments relating to the recoverability and classification of recorded asset amounts or the amounts and classification of liabilities that might result from the outcome of the uncertainties described above.

2.         Basis of Presentation and Summary of Significant Accounting Policies and Estimates

Basis of Presentation and Consolidation

The accompanying condensed consolidated financial statements have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) have been condensed or omitted pursuant to such rules and regulations. These financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2022, which was filed with the SEC on March 28, 2023.

In the opinion of management, the accompanying unaudited condensed consolidated financial statements have been prepared on a consistent basis with the audited consolidated financial statements for the fiscal year ended December 31, 2022, and include all adjustments, consisting of only normal recurring adjustments, necessary to fairly state the information set forth herein.

Certain reclassifications have been made to the amounts in prior periods to conform to the current period’s presentation.

The results of operations for the three and six months ended June 30, 2023 are not necessarily indicative of the results to be expected for the year ending  December 31, 2023 or any future periods.

The condensed consolidated financial statements include the financial statements of Ekso Bionics Holdings, Inc. and its subsidiaries. All significant transactions and balances between Ekso Bionics Holdings, Inc. and its subsidiaries have been eliminated in consolidation.

Use of Estimates

The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the balance sheet, and the reported amounts of revenues and expenses during the reporting period. For the Company, these estimates include, but are not limited to, assets acquired and liabilities assumed in business combinations, revenue recognition, deferred revenue, the valuation of warrants and employee equity awards, future warranty costs, accounting for leases, useful lives assigned to long-lived assets, valuation of inventory, realizability of deferred tax assets, and contingencies. Actual results could differ from those estimates.

Foreign Currency

The assets and liabilities of foreign subsidiaries and equity investments, where the local currency is the functional currency, are translated from their respective functional currencies into U.S. dollars at the rates in effect at the balance sheet date, and revenue and expense amounts are translated at average rates during the period, with resulting foreign currency translation adjustments recorded in accumulated other comprehensive income as a component of stockholders’ equity. Gains and losses from the re-measurement of balances denominated in currencies other than the entities' functional currencies, are recorded in other expense, net in the accompanying condensed consolidated statements of operations and comprehensive loss.

Inventory

Inventories are recorded at the lower of cost or net realizable value. Cost is computed using the standard cost method, which approximates actual cost on a first-in, first-out basis. Materials from vendors are received and recorded as raw materials. Once the raw materials are incorporated in the fabrication of the product, the related value of the component is recorded as work in progress ("WIP"). Direct and indirect labor and applicable overhead costs are also allocated and recorded to WIP inventory. Finished goods are comprised of completed products that are ready for customer shipment. The Company periodically evaluates the carrying value of inventory on hand for potential excess amounts over sales and forecasted demand. Excess and obsolete inventories identified, if any, are recorded as an inventory impairment charge within the condensed consolidated statements of operations and comprehensive loss. The Company's estimate of write-downs for excess and obsolete inventory is based on a detailed analysis which includes on-hand inventory and purchase commitments in excess of forecasted demand. Subsequent disposals of inventories are recorded as a reduction of inventory.

Leases

The Company records its leases in accordance with the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 842, Leases. At the inception of an arrangement, the Company determines whether the arrangement is or contains a lease based on the unique facts and circumstances present. Operating lease liabilities and their corresponding right-of-use assets are recorded based on the present value of lease payments over the expected lease term. The interest rate implicit in lease contracts is typically not readily determinable. As such, the Company utilizes its incremental borrowing rate, which is the rate incurred to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. Certain adjustments to the right-of-use asset may be required for items, such as initial direct costs paid or incentives received.

Lease expense is recognized over the expected lease term on a straight-line basis. Operating leases are recognized on the balance sheet as right-of-use assets, lease liabilities current and lease liabilities non-current.

Leases with an initial term of 12 months or less are not recorded on the balance sheet. The Company recognizes the lease expense for such leases on a straight-line basis over the lease term.

Revenue Recognition

The Company records its revenue in accordance with ASC 606, Revenue from Contracts with Customers. Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration the Company expects to receive in exchange for those products or services. The Company enters into contracts that can include various combinations of products and services, which when capable of being distinct, are accounted for as separate performance obligations. Revenue recognition is evaluated based on the following five steps: (i) identification of the contract with the customer; (ii) identification of the performance obligations in the contract; (iii) determination of the transaction price; (iv) allocation of the transaction price to the performance obligations in the contract; and (v) recognition of revenue when or as a performance obligation is satisfied.

For multiple-element arrangements, revenue is allocated to each performance obligation based on its relative standalone selling price. Standalone selling prices are determined based on observable prices at which the Company separately sells its products or services. If a standalone selling price is not directly observable, judgment is made to estimate the selling price based on market conditions and entity-specific factors including cost plus analyses, features and functionality of the product and/or services, the geography of the Company’s customers, and type of customer. Any discounts or other reductions to the transaction price are allocated proportionately to all performance obligations within the multiple-element arrangement. The Company periodically validates the stand-alone selling price for performance obligations by evaluating whether changes in the key assumptions used to determine the stand-alone selling prices will have a significant effect on the allocation of transaction price between multiple performance obligations.

The Company exercised judgement to determine that a product return reserve was not required as historical returns activity have not been material.

Going Concern

The Company assesses its ability to continue as a going concern at every interim and annual period in accordance with ASC 205-40. The accompanying condensed consolidated financial statements have been prepared assuming that the Company will continue as a going concern.

Concentration of Credit Risk and Other Risks and Uncertainties

Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and accounts receivable. The Company has significant cash balances at financial institutions which throughout the year regularly exceed the federally insured limit of $250. Any loss incurred or a lack of access to such funds could have a significant adverse impact on the Company's financial condition, results of operations, and cash flows. The Company extends credit to customers in the normal course of business. Concentrations of credit risk with respect to accounts receivable exist to the full extent of amounts presented in the condensed consolidated financial statements. The Company does not require collateral from its customers to secure accounts receivable.

Accounts receivable are derived from the sale of products shipped and services performed for customers primarily located in the U.S., Europe, Asia, and Australia. Invoices are aged based on contractual terms with the customer. The Company reviews accounts receivable for collectability and provides an allowance for potential credit losses. The allowance for potential credit losses on trade receivables reflects the Company’s best estimate of probable losses inherent in the accounts receivable balance based on known troubled accounts, historical experience, and other currently available evidence. Payment terms and conditions vary by contract type, although terms generally include a requirement of payment within 30 to 90 days. The Company has not experienced material losses related to accounts receivable as of  June 30, 2023 and December 31, 2022.

Many of the sales contracts with customers outside of the U.S. are settled in a foreign currency other than the U.S. dollar. The Company does not enter into any foreign currency hedging agreements and is susceptible to gains and losses from foreign currency fluctuations. To date, the Company has not experienced significant gains or losses upon collecting receivables denominated in a foreign currency.

At June 30, 2023 the Company had one customer with an accounts receivable balance totaling 10% or more of the Company’s total accounts receivable (13%) as compared with no customers at December 31, 2022.

During the three months ended June 30, 2023, the Company had three customers with sales of 10% or more of the Company’s total revenue (18%, 14% and 10%), as compared with three in the three months ended  June 30, 2022 (34%, 13% and 11%).

During the six months ended June 30, 2023, the Company had two customers with sales of 10% or more of the Company’s total revenue (16% and 13%), as compared with one in the six months ended  June 30, 2022 (22%).

Accounting Pronouncements Adopted in 2023

In June 2016, the FASB issued Accounting Standard Update ("ASU") No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments and subsequent amendments to the initial guidance under ASU 2018-19, ASU 2019-04, ASU 2019-05 and ASU 2019-10, which amended the current approach to estimate credit losses on certain financial assets, including trade and other receivables. Generally, this amendment requires entities to establish a valuation allowance for the expected lifetime losses of these certain financial assets. Upon the initial recognition of such assets, which is based on, among other things, historical information, current conditions, and reasonable supportable forecasts. Subsequent changes in the valuation allowance are recorded in current earnings and reversal of previous losses are permitted. Previously, U.S. GAAP required entities to write down credit losses only when losses were probable and loss reversals were not permitted. The Company adopted ASU 2016-13 as of January 1, 2023, using the modified retrospective transition method. The adoption of ASU 2016-13 did not have a material impact on the Company's financial position or the results of operations.

Recent Accounting Pronouncements

In August 2020, the FASB issued ASU No. 2020-06, Accounting for Convertible Instruments and Contracts in an Entity's Own Equity, which simplifies the accounting for convertible instruments. ASU 2020-06 eliminates certain models that require separate accounting for embedded conversion features, in certain cases. Additionally, among other changes, the guidance eliminates certain of the conditions for equity classification for contracts in an entity’s own equity. The guidance also requires entities to use the if-converted method for all convertible instruments in the diluted earnings per share calculation and include the effect of share settlement for instruments that may be settled in cash or shares, except for certain liability-classified share-based payment awards. This guidance is effective for the Company beginning in the first quarter of 2024 and must be applied using either a modified or full retrospective approach. Early adoption is permitted. The Company does not expect the impact of adopting ASU 2020-06 to be material on its condensed consolidated financial statements.

3.         Accumulated Other Comprehensive Income (Loss)

The Company's accumulated other comprehensive income (loss) consists of the accumulated net unrealized gains or losses on foreign currency translation adjustments. The change in accumulated other comprehensive income (loss) presented on the condensed consolidated balance sheets for the six months ended June 30, 2023 and 2022, is reflected in the table below net of tax:

4.          Human Motion and Control Acquisition

On December 5, 2022, the Company acquired the HMC business from Parker. The assets acquired from the business unit include intellectual property rights for devices which are FDA-cleared lower-limb powered exoskeletons that enable task-specific, overground gait training to patients with weakness or paralysis in their lower extremities. Products include Ekso Indego Personal, a light-weight exoskeleton for safe use in most home and community environments, and Ekso Indego Therapy, an adjustable exoskeleton for patients with spinal cord injury and stroke, complementing Ekso’s product offering in outpatient facilities.

The assets purchased by the Company include intellectual property related to the aforementioned Ekso Indego devices and future products in the orthotics and prosthetics space, inventories related to the Ekso Indego product line, fixed assets configured for the manufacture of the Ekso Indego products, and Ekso Indego devices maintained for service and sales demonstrations. The Company did not acquire any cash in connection with the acquisition of the business unit.

As consideration for the assets acquired, the Company (i) paid Parker $5,000 in cash and (ii) delivered to Parker a $5,000 unsecured, subordinated zero percent interest promissory note (the “Promissory Note”). Under the terms of the Promissory Note, the Company shall pay Parker sixteen (16) equal quarterly installments of $313, with the first payment being due and payable December 31, 2023, and the last payment being due and payable September 30, 2027. For additional information see Note 10.

The Company accounted for the acquisition as a business combination in accordance with ASC 805, Business Combinations, by applying the acquisition method, and accordingly, the purchase price of $9,055, as calculated in the table below, was allocated to the assets acquired and liabilities assumed based on their fair values at the acquisition date. The fair values presented for fixed assets, intangible assets, and goodwill are preliminary figures pending final fair value analyses. In accordance with ASC 805, the acquirer has a year from the date of acquisition to recognize measurement period adjustments. The preliminary fair values presented below could be subject to change as result of the aforementioned adjustments. The excess of the purchase price over the preliminary net assets acquired of $431 was recorded as goodwill. The goodwill recognized is attributed primarily to expected synergies of HMC with the Company. From the acquisition date through  June 30, 2023, there were no changes in the recognized amounts of goodwill resulting from the acquisition.

The following table summarizes the preliminary fair values of the assets acquired, liabilities assumed and consideration given as of the acquisition date. These estimates are preliminary, pending final evaluation of certain assets, and therefore, are subject to revisions that may result in adjustments to the values presented below:

The fair value of finished goods inventories acquired was estimated at retail selling price less estimated costs to sell and a reasonable profit allowance for the selling effort. The fair value of raw materials acquired were estimated using current prices from suppliers. The preliminary fair value of fixed assets was estimated using a cost approach, adjusting historical gross asset values for inflation, reduced for the remaining estimated economic life of the assets. The preliminary fair values of intangible assets were estimated using a relief from royalty method, the excess earnings method, and a distributor method, all income approaches, which required significant estimates from management regarding future sales expectations, long-term operating margins, the weighted average cost of capital or other appropriate discount rates, and royalty rates. The fair value of the promissory note was estimated as the present value of scheduled principal payments discounted at the Company's estimated borrowing rate.

The Company recorded $5,240 to intangible assets as of the acquisition date and is amortizing the value of the developed technology, customer relationships and intellectual property over a weighted average estimated useful life of eight years. Amortization expense related to the acquired definite lived intangible assets was $82 and $163 for the three and six months ended June 30, 2023, respectively, and was included as a component of operating expenses and cost of revenue in the condensed consolidated statement of operations and comprehensive loss. Of the $431 of goodwill, none was expected to be deductible for tax purposes.

5.         Fair Value Measurement

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. Three levels of inputs, of which the first two are considered observable and the last unobservable, may be used to measure fair value which are the following:

The Company’s fair value hierarchies for its financial assets and liabilities, which require fair value measurement on a recurring basis are as follows:

The following table sets forth a summary of the changes in the fair value of the Company’s Level 3 financial liabilities for the three months ended June 30, 2023, which were measured at fair value on a recurring basis:

Refer to Note 12. Capitalization and Equity Structure – Warrants for additional information regarding the valuation of warrants.

6.         Inventories

Inventories consisted of the following:

7.         Revenue

The Company’s medical device segment (EksoHealth) revenue is primarily generated through the sale and subscription of the EksoNR, EksoUE, Ekso Indego Therapy, and Ekso Indego Personal devices, along with the sale of support and maintenance contracts. Revenue from medical device product sales is recognized at the point in time when control of the product transfers to the customer. Transfer of control generally occurs upon shipment from the Company’s facility for sales of the EksoNR, Ekso UE, Ekso Indego Therapy, and Ekso Indego Personal devices. Support and maintenance contracts extend coverage beyond the Company’s standard warranty agreements. The separately priced support and maintenance contracts range from 12 to 48 months. The Company typically receives payment at the inception of the contract and recognizes revenue evenly over the term of the contracts. Revenue from medical device subscriptions is recognized evenly over the contract term, typically over 12 to 24 months.

The Company’s industrial device segment (EksoWorks) revenue is primarily generated through the sale of the upper body exoskeleton EVO and associated accessories. Revenue from industrial device sales is recognized at the point in time when control of the product transfers to the customer. Transfer of control generally occurs upon shipment from the Company’s facility. In June of 2022, the Company ceased commercialization of the EksoZeroG support arm and related products and accessories. 

Deferred Revenue

Deferred revenue is comprised mainly of unearned revenue related to extended support and maintenance contracts, but also includes other offerings for which the Company has been paid in advance and earns revenue when the Company transfers control of the product or service.

Deferred revenue consisted of the following:

Deferred revenue activity consisted of the following for the six months ended June 30, 2023:

The Company expects to recognize approximately $758 of the deferred revenue during the remainder of 2023, $1,020 in 2024, and $1,140 thereafter.

In addition to deferred revenue, the Company has a non-cancellable backlog of $1,063, expected to be recognized between 2023 and 2025, related to its contracts for subscription units with its customers. These subscription contracts typically have 12 to 24 month terms, and subscription income is recognized on a straight-line basis over the term of the contract.

Disaggregation of Revenue

The following table disaggregates the Company’s revenue by major source for the three months ended June 30, 2023:

The following table disaggregates the Company’s revenue by major source for the six months ended June 30, 2023:

The following table disaggregates the Company’s revenue by major source for the three months ended June 30, 2022:

The following table disaggregates the Company’s revenue by major source for the six months ended June 30, 2022:

8.         Accrued Liabilities

Accrued liabilities consisted of the following:

Warranty

The current portion of the device warranty liability is classified as a component of Accrued liabilities, while the long-term portion of the device warranty liability is classified as a component of Other non-current liabilities in the condensed consolidated balance sheets. A reconciliation of the changes in the device warranty liability for the three and six months ended June 30, 2023 is as follows:

9.         Goodwill and Intangible Assets

Goodwill

The Company determined no impairment existed for goodwill for the three and six months ended June 30, 2023.

Intangible Assets

The following table summarizes the components of preliminary gross assets, accumulated amortization, and net carrying values for definite and indefinite lived intangible asset balances as of June 30, 2023:

Definite lived intangible assets are amortized over their estimated lives using the straight line method, which is estimated as 8 years for developed technology, 12 years for intellectual property, eight years for customer relationships and one year for below market lease. The acquired trade name was estimated to have an indefinite life, and consequently, no amortization expense was recorded. The Company determined no impairment existed for intangible assets for the three months ended June 30, 2023.

The estimated future amortization expenses related to definite lived intangible assets as of June 30, 2023 is as follows:

10.         Notes Payable, net

PWB Term Loan

In August 2020, the Company entered into a loan agreement (the "PWB Loan Agreement") with a lender, Pacific Western Bank, and received a loan in the principal amount of $2,000 (the "PWB Term Loan") that bears interest on the outstanding daily balance at a rate equal to the greater of: (a) 0.50% above the variable rate of interest announced by the lender as its “prime rate” then in effect; or (b) 4.50%. The PWB Loan Agreement created a first priority security interest with respect to substantially all assets of the Company, including proceeds of intellectual property, but expressly excluding intellectual property itself.

The Company is required to pay accrued interest on the current loan on the 13th day of each month through and including August 13, 2023. The principal balance of the PWB Term Loan matures on August 13, 2023, at which time all unpaid principal and accrued and unpaid interest shall be due and payable in full. The interest rate of the PWB Term Loan is subject to increase in the event of late payments and after occurrence of and during the continuation of an event of default. The Company may elect to prepay the PWB Term Loan at any time, in whole or in part, without penalty or premium.

The PWB Loan Agreement contains a liquidity covenant, which requires that the Company maintain cash in accounts of the lender or subject to control agreements in favor of the lender in an amount equal to at least the outstanding balance of the PWB Term Loan, which was $2,000 as of June 30, 2023. On June 30, 2023, with cash on hand of $13,307, the Company was compliant with this covenant. In March 2023, the Company entered into an amendment to the PWB Loan Agreement increasing the primary depository covenant, which restricts the Company from having more than $3,000 held in subsidiary accounts outside of the United States until July 2, 2023. In July 2023, the Company entered into another amendment to the PWB Loan Agreement extending the aforementioned date to August 13, 2023.

The debt issuance costs and debt discounts combined with the stated interest resulted in an effective interest rate of 8.87% and 8.70% for the three and six months ended June 30, 2023, respectively. The debt issuance costs are amortized to interest expense using the effective interest method over the life of the loan.

The following table presents scheduled principal payments of the Company’s PWB term loan as of June 30, 2023:

Parker Hannifin Promissory Note

In connection with the HMC Acquisition, on December 5, 2022, the Company delivered a $5,000 unsecured, subordinated promissory note (the "Promissory Note") to Parker. The Promissory Note, subordinate to the PWB Term Loan, bears no interest with principal payable in sixteen equal installments due on the last day of each quarter, commencing on December 31, 2023 and maturing on September 30, 2027. For additional information see Note 4.

The Promissory Note, upon the occurrence of an event of default, allows for the levying of interest equal to the lesser of (a) 5% per annum and (b) the maximum interest rate permitted under applicable law on the then entire outstanding principal balance, and also for the acceleration of all outstanding liabilities and obligations, making them immediately payable. Under the terms of the Promissory Note, the following occurrences constitute a default, and could, upon written notice or declaration by Parker, allow for the levying of interest and or the acceleration of principal outstanding: (i) failure to pay any amount of the principal when due and payable, (ii) the dissolution of the Company (including the declaration of bankruptcy), and (iii) the acquisition of the Company by another entity or the sale of substantially all of its assets to another entity.

The Company recorded the Promissory Note of $4,055 in its condensed consolidated balance sheets under the captions Notes Payable, Current and Notes Payable, Net, estimating an implicit discount rate of 7.5% via reference to the interest charged on the Company's PWB Term Loan and other relevant economic factors present at the execution date of the Promissory Note. The amortization of debt discounts resulted in an effective interest rate of 7.45% for the three and six months ended June 30, 2023. The debt discount is amortized to interest expense using the effective interest method over the life of the loan. Interest expense on the Promissory Note was $79 and $159 for the three and six months ended June 30, 2023, respectively.

The following table presents scheduled principal payments of the Company's note payable as of June 30, 2023:

11.         Lease Obligations

The Company maintained a five-year operating lease agreement for its headquarters and manufacturing facility in Richmond, California (the "Richmond Lease") which expired at the end of May 2022. The Company continued to maintain its tenancy at this location until the end of August 2022. Pursuant to the terms of the original lease agreement, the Company incurred monthly expenses equal to the most recent monthly lease payment under the now expired lease agreement and common area maintenance costs plus a 25% mark-up.

In July 2022, the Company entered into an operating lease agreement for its new headquarters and manufacturing facility in San Rafael, California (the "San Rafael Lease") expiring in October 2026 with the option to renew for an additional three-year period at the prevailing market rate at the time of extension. At the end of August 2022, the Company relocated to its new headquarters and manufacturing facility in San Rafael.

The Company has determined that the new San Rafael Lease constitutes an operating lease under ASC 842 and estimates the lease term as July 2022 through October 2026. The option to extend for a three-year period lacks significant economic incentives and disincentives, which would make exercise reasonably certain. Fixed lease payments for identified lease components over the identified term have been discounted at the Company's estimated incremental borrowing rate as of the date of contract execution and are reflected in the condensed consolidated balance sheets under the captions Lease liabilities, current and Lease liabilities, and the corresponding right of use asset is reflected in the condensed consolidated balance sheets under the caption Right-of-use assets. Non-lease components, such as common area maintenance costs, are excluded from the lease liability calculation and expensed as incurred. The Company records a straight-line monthly rent expense for the San Rafael Lease equal to the sum of all fixed lease payments divided by the number of months in the lease term.

The Company previously maintained a five-year operating lease agreement for its European operations office in Hamburg, Germany, which was originally set to expire in July 2022. In February 2022, the Company executed a new lease agreement with the same landlord for a replacement office in Hamburg, Germany commencing May 1, 2022 and expiring June 30, 2025 with an option to renew for one five-year period. Upon the early termination of the previous lease agreement, it was agreed between the landlord and the Company that access to the previously leased office space would be revoked and the Company would be relieved of its payment obligations for the final two months of the lease term. Consequently, the Company removed the right of use asset and lease liability, $15 and $16 respectively, recorded in its condensed consolidated financial statements related to the original Hamburg tenancy.

The Company has determined that the new Hamburg lease agreement constitutes a lease under ASC 842 and estimates the lease term as May 2022 through June 2025. The option to extend for a five-year period lacks significant economic incentives and disincentives which would make exercise reasonably certain. Fixed lease payments for identified lease components over the identified term have been discounted at the Company's estimated incremental borrowing rate and are reflected in the condensed consolidated balance sheets under the captions Lease liabilities, current and Lease liabilities, and the corresponding right of use asset is reflected in the condensed consolidated balance sheets under the caption Right-of-use assets. Non-lease components, such as common area maintenance costs, are excluded from the lease liability calculation and expensed as incurred. The Company records a straight-line monthly rent expense for this lease equal to the sum of all fixed lease payments divided by the number of months in the lease term.

The Company’s future lease payments as of June 30, 2023, which are presented as Lease liabilities, current and Lease liabilities on the Company’s condensed consolidated balance sheets are as follows:

Lease expense under the Company’s operating leases was $138 and $124 for the three months ended June 30, 2023 and 2022, respectively; and $271 and $266 for the six months ended June 30, 2023 and 2022, respectively.

12.         Capitalization and Equity Structure

Summary

The Company’s authorized capital stock at  June 30, 2023 and  December 31, 2022 consisted of 141,429 shares of common stock and 10,000 shares of preferred stock. As of June 30, 2023 and December 31, 2022, there were 13,807 and 13,203, respectively, shares of common stock issued and outstanding and no shares of preferred stock issued and outstanding.

At the Market Offering

In October 2020, the Company entered into an At The Market Offering Agreement (the "ATM Agreement") with H.C. Wainwright & Co., LLC (the "Agent"), under which the Company may issue and sell shares of its common stock, from time to time, to or through the Agent. The Company may offer and sell shares having an aggregate offering price of up to $7,500 under the registration statement and prospectus supplement filed with the SEC related to such offering. In June 2023, the Company entered into an amendment to the ATM Agreement that removed the requirement that shares of the Company's common stock may not be sold for a price lower than $6.75 per share. The Company did not sell any shares under the ATM agreement during the three and six months ended June 30, 2023 and 2022. 

Warrants

Warrants outstanding as of June 30, 2023 and  December 31, 2022 were as follows:  

No warrants were exercised during the three and six months ended June 30, 2023 and 2022.

2021 Warrants

In February 2021, the Company issued warrants (the "2021 Warrants"), exercisable for up to 273 shares of the Company’s common stock at an exercise price of $12.81 per share. The 2021 Warrants were exercisable immediately and will expire five years from the date of issuance, or on February 11, 2026.

In addition, the 2021 Warrants contain a cashless exercise provision, whereby, if, at the time a holder exercises its 2021 Warrants, a registration statement registering the issuance or the resale of the shares of common stock underlying the 2021 Warrants under the Securities Act is not then effective or available for the issuance of such shares, then in lieu of making the cash payment otherwise contemplated to be made to the Company upon such exercise in payment of the aggregate exercise price, the holder may elect to instead receive, upon such exercise (either in whole or in part), the net number of shares of the Company’s common stock determined according to a formula set forth in the 2021 Warrants. The 2021 Warrants will be automatically exercised on a cashless basis on their expiration date. The 2021 Warrants could also require payment of liquidated damages by the Company in the form of cash payments in the event of a failure by the Company to timely deliver shares of common stock upon exercise of such warrants.

The 2021 Warrants also contain a put option, under which, if the Company enters into a Fundamental Transaction, as defined in the 2021 Warrants, the Company or any successor entity will, at the option of a holder of a 2021 Warrant, exercisable concurrently with or at any time within 30 days after the consummation of such Fundamental Transaction, purchase such holder’s 2021 Warrant by paying to such holder an amount of cash equal to the Black-Scholes value of the remaining unexercised portion of such holder’s 2021 Warrant within five trading days after the notice of exercise by the holder of the put option. Because of this put-option provision, the 2021 Warrants are classified as a liability and are marked to market at each reporting date.

The warrant liability related to the 2021 Warrants is measured at fair value upon issuance and at each reporting date using certain estimated inputs, which are classified within Level 3 of the fair value hierarchy. The following assumptions were used in the Black-Scholes Model to measure the fair value of the 2021 Warrants:

June 2020 Investor Warrants

In June 2020, the Company issued warrants (the "June 2020 Investor Warrants"), exercisable for up to 874 shares of the Company’s common stock at an exercise price of $5.18 per share. The June 2020 Investor Warrants were immediately exercisable and will expire five and one-half years from the date of issuance, or on December 10, 2025.

In addition, the June 2020 Investor Warrants contain a cashless exercise provision, whereby, if, at the time a holder exercises its June 2020 Investor Warrants, a registration statement registering the issuance or the resale of the shares of common stock underlying the June 2020 Investor Warrants under the Securities Act is not then effective or available for the issuance of such shares, then in lieu of making the cash payment otherwise contemplated to be made to the Company upon such exercise in payment of the aggregate exercise price, the holder may elect to instead receive, upon such exercise (either in whole or in part), the net number of shares of the Company’s common stock determined according to a formula set forth in the June 2020 Investor Warrant. The June 2020 Investor Warrants will be automatically exercised on a cashless basis on their expiration date.

The June 2020 Investor Warrants could also require payment of liquidated damages by the Company in the form of cash payments in the event of a failure by the Company to timely deliver shares of common stock upon exercise of such warrants.

The June 2020 Investor Warrants also contain a put option, under which, if the Company enters into a Fundamental Transaction, as defined in the June 2020 Investor Warrants, the holders of the June 2020 Investor Warrants will be entitled to receive upon exercise of the June 2020 Investor Warrants the kind and amount of securities, cash or other property that the holders would have received had they exercised the June 2020 Investor Warrants immediately prior to such Fundamental Transaction. Alternatively, the Company or any successor entity will, at the option of a holder of a June 2020 Investor Warrant, exercisable concurrently with or at any time within 30 days after the consummation of such Fundamental Transaction, purchase such holder’s June 2020 Investor Warrant by paying to such holder an amount of cash equal to the Black-Scholes value of the remaining unexercised portion of such holder’s June 2020 Investor Warrant. Because of this put-option provision, the June 2020 Investor Warrants are classified as a liability and are marked to market at each reporting date.

The warrant liability related to the June 2020 Investor Warrants is measured at fair value at each reporting and exercise date using certain estimated inputs, which are classified within Level 3 of the fair value hierarchy. The following assumptions were used in the Black-Scholes Model to measure the fair value of the June 2020 Investor Warrants:

June 2020 Placement Agent Warrants

In June 2020, the Company issued warrants (the "June 2020 Placement Agent Warrants"), exercisable for up to 122 shares of the Company’s common stock, to the placement agent for such offering. The June 2020 Placement Agent Warrants have substantially the same form as the June 2020 Investor Warrants, including the put option described above, except that they have an exercise price per share equal to $5.64, subject to adjustment in certain circumstances, and will expire on June 7, 2025.

Because of the put-option provision in the June 2020 Placement Agent Warrants, these warrants are classified as a liability and are marked to market at each reporting date.

The warrant liability related to the June 2020 Placement Agent Warrants is measured at fair value at each reporting and exercise date using certain estimated inputs, which are classified within Level 3 of the fair value hierarchy. The following assumptions were used in the Black-Scholes Model to measure the fair value of the June 2020 Placement Agent Warrants:

December 2019 Warrants

In December 2019, pursuant to a securities purchase agreement (the "December 2019 Offering"), the Company issued warrants (the "December 2019 Warrants") to purchase 556 shares of common stock. The December 2019 Warrants are currently exercisable, have an exercise price of $8.10 per share, and will expire five years from the date they initially became exercisable, or on June 21, 2025.

The December 2019 Warrants also contain a cashless exercise provision and could require cash payments in the event of a failure to timely deliver securities or in the event of insufficient authorized shares. The December 2019 Warrants will be automatically exercised on a cashless basis on their expiration date. The December 2019 Warrants also contain a put option, under which, if the Company enters into a Fundamental Transaction, as defined in the December 2019 Warrants, the Company or any successor entity will, at the option of a holder of a December 2019 Warrant, exercisable concurrently with or at any time within 30 days after the consummation of such Fundamental Transaction, purchase such holder’s December 2019 Warrant by paying to such holder an amount of cash equal to the Black-Scholes value of the remaining unexercised portion of such holder’s December 2019 Warrant within five trading days after the notice of exercise by the holder of the put option. Because of this put-option provision, the December 2019 Warrants are classified as a liability and are marked to market at each reporting date.

The warrant liability related to the December 2019 Warrants is measured at fair value at each reporting date using certain estimated inputs, which are classified within Level 3 of the fair value hierarchy. The following assumptions were used in the Black-Scholes Model to measure the fair value of the December 2019 Warrants:

December 2019 Placement Agent Warrants

In December 2019, in connection with the December 2019 Offering, the Company issued warrants to purchase 52 shares of the Company’s common stock to the placement agent for such offering (the "December 2019 Placement Agent Warrants"). The December 2019 Placement Agent Warrants have substantially the same form as the December 2019 Warrants, except that they have an exercise price per share equal to $8.44, subject to adjustment in certain circumstances, and will expire on December 18, 2025.

The warrant liability related to the December 2019 Placement Agent Warrants is measured at fair value at each reporting date using certain estimated inputs, which are classified within Level 3 of the fair value hierarchy. The following assumptions were used in the Black-Scholes Model to measure the fair value of the December 2019 Placement Agent Warrants:

Management has assessed that the likelihood of a Change of Control (as defined in the December 2019 Placement Agent Warrants), occurring during the term of the December 2019 Placement Agent Warrants is low, and that if such an event were to occur, the difference between the cashless exercise value and the warrants fair value is nominal.

May 2019 Warrants

In May 2019, pursuant to an underwriting agreement, (the "May 2019 Offering"), the Company issued the warrants (the "May 2019 Warrants") to purchase 444 shares of common stock. The May 2019 Warrants are currently exercisable, have a current exercise price of $3.52 per share, and will expire five years from the date of their issuance, or on May 24, 2024. The May 2019 Warrants contain a price protection feature, pursuant to which, subject to certain exceptions, if shares of common stock are sold or issued in the future, or securities convertible or exercisable for shares of the Company’s common stock are sold or issued in the future, for consideration, or with an exercise price or conversion price, as applicable, per share less than the exercise price per share then in effect for the May 2019 Warrants, the exercise price of the May 2019 Warrants is reduced to the consideration paid for, or the exercise price or conversion price of, as the case may be, the securities issued in such offering. Pursuant to this provision, in connection with the June 2020 Offering, the exercise price of the May 2019 Warrants was reduced to $3.52 per share, being the amount that is equal to the lower of (x) the consideration paid for the securities issued in the June 2020 Offering, or $4.51 per share, (y) the lowest exercise price of the June 2020 Investor Warrants, or $5.18, and (z) the lowest one-day volume-weighted average price of the Company’s Common Stock on the Nasdaq Capital Market as measured each day during the five trading day period starting on June 8, 2020, rounded to the nearest share, or $3.52.

In addition, if the Company effects or enters into any issuance of common stock or options or convertible securities exercisable for or convertible into common stock at a price which varies or may vary with the market price of the shares of the Company's common stock, subject to certain exceptions, a May 2019 Warrant holder may, at the time of exercise of the holder’s warrant, elect to exercise the warrant at such variable price.

The May 2019 Warrants include a put option, whereby while the May 2019 Warrants are outstanding, if the Company enters into a Change of Control, as defined in the May 2019 Warrants, the Company or any successor entity will, at the option of a 2019 Warrant holder exercise within 90 days after the public disclosure of the Change of Control transaction, purchase such holder’s May 2019 Warrants by paying to such holder an amount of cash equal to the Black-Scholes value of the remaining unexercised portion of such warrants on the later date of consummation of the Change of Control transaction or two trading days after the notice of such request. Because of this put option provision, the May 2019 Warrants are classified as a liability and are marked to market at each reporting date.

The warrant liability related to the May 2019 Warrants is measured at fair value at each reporting and exercise date using certain estimated inputs, which are classified within Level 3 of the fair value hierarchy. Because of the price protection feature contained in the May 2019 Warrants, the Company uses a combination of the Black-Scholes Model and the Lattice Model to estimate the fair value of the warrants at each reporting period. The following assumptions were used in the Black-Scholes Model in combination with the Lattice Model to measure the fair value of the May 2019 Warrants:

Management has assessed that the likelihood of a Change of Control occurring during the term of the warrants is low, and that if such an event were to occur, the difference between the cashless exercise value and the May 2019 Warrants fair value is nominal.

13.         Stock-based Compensation

Shares available to grant

On June 8, 2023, the Company held its 2023 Annual Meeting of Stockholders and ratified an amendment to the Company's Amended and Restated 2014 Equity Incentive Plan to increase the total number of shares of common stock authorized for issuance by 1,200 shares. As of June 30, 2023, the total number of shares authorized for grant under the Company's Amended and Restated 2014 Equity Incentive Plan was 3,724, of which 410 were available for future grants.

Stock Options

The following table summarizes information about the Company’s stock options outstanding as of June 30, 2023, and activity during the six months then ended:

As of June 30, 2023, total unrecognized compensation cost related to unvested stock options was $21. This amount is expected to be recognized as stock-based compensation expense in the Company’s condensed consolidated statements of operations and comprehensive loss over the remaining weighted average vesting period of 0.39 years.

There were no stock options awarded during the three and six months ended June 30, 2023 and 2022.

Restricted Stock Units

The Company issues time-based restricted stock units (“RSUs”) and performance-based restricted stock units ("PSUs") to employees and non-employee members of the Board. Each RSU and PSU represents the right to receive one share of the Company’s common stock upon vesting and subsequent settlement. PSUs vest upon achievement of performance targets based on the Company's annual operating plan.

The fair values of RSUs and PSUs are determined based on the closing price of the Company’s common stock on the date of grant.

Combined RSU and PSU activity for the six months ended June 30, 2023 is summarized below:

As of June 30, 2023, $2,174 of total unrecognized compensation expense related to unvested RSUs and PSUs was expected to be recognized over a weighted average period of 1.55 years.

Compensation Expense

Total stock-based compensation expense related to options, RSUs and PSUs granted to employees and non-employee members of the board of directors is included in the condensed consolidated statements of operations and comprehensive loss as follows:

401(k) Plan Share Match

During the six months ended June 30, 2023 and 2022, the Company issued 161 and 68 shares of common stock with a fair value of $249 and $176, to eligible employees’ deferral accounts for the 401(k) Plan matching contribution representing 50% of each eligible employee’s elected deferral (up to the statutory limit) for the years ended December 31, 2022 and 2021, respectively. 

The expense for the 401(k) plan share matching was $219 and $103 for the six months ended June 30, 2023 and 2022, respectively.

14.         Income Taxes

There were no material changes to the unrecognized tax benefits in the six months ended June 30, 2023, and the Company does not expect significant changes to unrecognized tax benefits through the end of the fiscal year.

15.         Commitments and Contingencies

Material Contracts

The Company has two license agreements with the Regents of the University of California to maintain exclusive rights to certain patents. The Company is required to pay 1% of net sales of licensed medical devices sold to entities other than the U.S. government. In addition, the Company is required to pay 21% of consideration collected from any sub-licensee for the grant of the sub-license.

The Company entered into a research and development collaboration agreement in December 2021 with a party that develops technologies having utility in robotic exoskeletons from research and development activities associated with a specific set of government funded research projects. Since January 2022, the Company has assisted with research and development activities in exchange for access to a worldwide, royalty free, transferable, sublicensable, exclusive license to design and market products that use or incorporate the jointly-developed technology within Ekso’s target market segments.

In connection with the HMC Acquisition, the Company assumed two license agreements with Vanderbilt University to maintain exclusive rights to patents on the Company's behalf. The Vanderbilt Exoskeleton License Agreement was entered into as of October 15, 2012 and will continue until April 29, 2038, unless sooner terminated. Under this agreement, the Company is required to pay 6% of net sales of licensed patent products and 3% of net sales of licensed software products. The minimum annual royalty for licensed products is $250 after July 31, 2018. The Vanderbilt Knee License Agreement was entered into as of March 1, 2022 and will continue until February 15, 2041, unless sooner terminated. Under this agreement, the Company is required pay 3.75% of net sales for licensed patent products and the minimum annual royalty is $75 due on or before July 31, 2028. The Company also entered into transitional use agreements with Parker granting the Company access to certain information technology systems and shared services relating to manufacturing facilities in Macedonia, Ohio for twelve months following the date of the acquisition. As consideration for access to these resources, the Company is required to make monthly payments of $20.

Purchase Obligations

The Company purchases components from a variety of suppliers and uses contract manufacturers to provide manufacturing services for its products. Purchase obligations are defined as agreements that are enforceable and legally binding and that specify all significant terms, including: fixed or minimum quantities to be purchased; fixed, minimum or variable price provisions; and the approximate timing of the transaction. 

The Company had purchase obligations primarily for purchases of inventory and manufacturing related service contracts totaling $3,455 as of June 30, 2023, which are expected to be paid within one year, and $3,480 as of December 31, 2022. Timing of payments and actual amounts paid may be different depending on the time of receipt of goods or services or changes to agreed-upon amounts for some obligations.

The Company has operating lease commitments totaling $1,379 payable over 43 months related to the San Rafael and Hamburg leases disclosed in Note 11. Lease Obligations.

Loss Contingencies

In the normal course of business, the Company is subject to various legal matters. In the opinion of management, the resolution of such matters will not have a material adverse effect on the Company’s condensed consolidated financial statements.

16.         Net Loss Per Share

The following table sets forth the computation of basic and diluted net loss per share:

The following table sets forth potential shares of common stock that are not included in the calculation of diluted net loss per share because to do so would be anti-dilutive as of the end of each period presented:

17.         Segment Disclosures

The Company has two reportable segments: EksoHealth and EksoWorks. The EksoHealth segment designs, engineers, manufactures, and markets exoskeletons for applications in the medical markets. The EksoWorks segment designs, engineers, manufactures, and markets exoskeleton devices to allow able-bodied users to perform difficult repetitive work for extended periods. The reportable segments are each managed separately because they serve distinct markets.

The Company evaluates performance and allocates resources based on segment gross profit margin. The Company does not consider operating expenses or net assets as segment measures and, accordingly, are not allocated.

Segment reporting information is as follows: