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TIGO ENERGY, INC.

For the period ended Dec 31, 2025. Filed Mar 19, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 19, 2026

TYGO$0.76+3.4%Stored close · as of Nov 9, 2026

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Contents

Notes to Consolidated Financial Statements

Nature of Operations

Tigo Energy, Inc. and subsidiaries (together, the “Company”) consists of Tigo Energy, Inc. (“Tigo”), its wholly-owned direct and indirect subsidiaries: Tigo Energy MergeCo, Inc. (f/k/a Tigo Energy, Inc.) (“Legacy Tigo”), Tigo Energy Brasil Ltda., Tigo Energy Philippines Inc., Tigo Energy Israel Ltd., Tigo Energy AI Ltd. (f/k/a Foresight Energy, Ltd. (“fSight”)), Tigo Energy Italy SRL, Tigo Energy Equipment Trading (Suzhou) Co., Ltd. and Tigo Energy Australia Pty Ltd. Prior to the consummation of the Business Combination (as defined below), the operations of the Company were conducted through Legacy Tigo. Legacy Tigo was incorporated in Delaware in 2007 and commenced operations in 2010.

The Company provides solar and energy storage solutions, including module level power electronics (“MLPE”) designed to maximize the energy output of individual solar modules, delivering more energy, active management, and enhanced safety for utility, commercial, and residential solar arrays. By combining its MLPE and solar optimizer technology with intelligent, cloud-based software capabilities, the Company enables advanced energy monitoring, system diagnostics, and real-time control. These smart hardware and software solutions enhance system performance, lower operating costs, and ensure compliance with safety regulations, including rapid shutdown requirements. In addition to MLPE, the Company develops and manufactures inverters and battery energy storage systems for the residential solar-plus storage market, further expanding its suite of solutions for efficient and reliable energy management. The Company is headquartered in Los Gatos, California, with offices in Europe, Asia, and the Middle East.

Basis of Presentation

The accompanying audited consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”). Any reference in these notes to applicable guidance is meant to refer to GAAP as found in the Accounting Standards Codification (“ASC”) and Accounting Standards Updates (“ASU”) promulgated by the Financial Accounting Standards Board (“FASB”). The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

The Company has determined the functional currency of the subsidiaries to be the U.S. dollar. The Company remeasures monetary assets and liabilities of its foreign operations at exchange rates in effect at the balance sheet date and nonmonetary assets and liabilities at their historical exchange rates. Net revenue and expenses are remeasured at the weighted-average exchange rates during the relevant reporting period. These remeasurement gains and losses are recorded in other (income) expenses, net in the consolidated statements of operations and comprehensive loss and were not material for the years ended December 31, 2025, and 2024.

Summary of Significant Accounting Policies

Liquidity and Going Concern

In accordance with ASU No. 2014-15, “Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern”(“Subtopic 205-40”), the Company has evaluated whether there are conditions and events, considered in the aggregate, that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date that the consolidated financial statements are issued.

As of December 31, 2025, the Company had cash and cash equivalents of$7.7 million and total net working capital, which we define as current assets less current liabilities, of$19.2 million. On December 17, 2025, the Company repaid the full principal balance and accrued interest of its Convertible Promissory Note (see Note 7, “Debt”). Additionally, on February 24, 2026, we issued and sold, in the Offering (as defined above), an aggregate of 5,000,000 shares of the Company’s common stock, par value $0.0001 per share, at a purchase price of$3.00 per share, resulting in gross proceeds of$15.0 million to the Company, before deducting placement agent fees and offering expenses (see Note 15, “Subsequent Events”). We believe that our cash provided by operations, as well as the gross proceeds received from the Offering, will provide adequate liquidity for ongoing operations, planned capital expenditures and other investments for at least the next 12 months from the issuance date of this Form 10-K for the year ended December 31, 2025.

Emerging Growth Company Status

The Company is an emerging growth company, as defined in the Jumpstart Our Business Startups Act of 2012 (JOBS Act). Under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act, until such time as those standards apply to private companies. The Company has elected to use this extended transition period for complying with new or revised accounting standards that have different effective dates for public and private companies until the earlier of the date that it (i) is no longer an emerging growth company or (ii) affirmatively and irrevocably opts out of the extended transition period provided in the JOBS Act. As a result, these financial statements may not be comparable to companies that comply with the new or revised accounting pronouncements as of public company effective dates.

Use of Estimates

The preparation of the consolidated financial statements, in conformity with GAAP, requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Key estimates in the consolidated financial statements include revenue recognition, fair value of investments, allowance for credit allowances, inventory valuation, impairment of long-lived assets, fair value of acquired intangible assets and goodwill, useful lives of acquired intangible assets and property and equipment, product warranty liabilities, incremental borrowing rate for right of use assets and lease liability, valuation allowance on deferred tax assets, assessment of probability of vesting of performance-based equity awards and stock-based compensation, including the underlying fair value of the common stock. These estimates are based on information available as of the date of the financial statements; therefore, actual results could differ materially from those estimates due to risks and uncertainties.

Concentrations of Credit Risk

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist of cash, marketable securities and accounts receivable. The Company maintains deposits in federally insured financial institutions, which, at times, may exceed federally insured limits. The Company believes it is not exposed to significant credit risk beyond the normal credit risk associated with commercial banking relationships as the Company’s cash is deposited with major financial institutions in the U.S., Europe, the Middle East and Asia. The Company does not believe it is exposed to any significant credit risk due to the high credit quality of the financial instruments in which the money is held. At December 31, 2025, and 2024, the Company held immaterial cash in foreign bank accounts. To date, the Company has not experienced any losses on its deposits of cash.

For the year ended December 31, 2025, no customer accounted for 10% or more of total revenue.

At times, a portion of the Company’s accounts receivable are due from customers whose individual balances represent 10% or more of total accounts receivable. Customers accounting for 10% or more of total accounts receivable were as follows:

Year Ended December 31,
Customer A22.5%
Customer B10.6%

No other customer accounted for 10% or more of total accounts receivable as of December 31, 2025.

Segment Information

Operating segments are defined as components of an enterprise about which separate discrete information is available for evaluation by the chief operating decision maker (“CODM”), or decision-making group, in deciding how to allocate resources and in assessing performance. The Company’s CODM is the Chief Executive Officer (the “CEO”). The Company has one business activity — the design, development and sale of solar energy optimization solutions. There are no segment managers who are held accountable for operations, operating results or plans for levels or components below the consolidated unit level. Accordingly, management has determined that the Company has a single operating and reportable segment. The CODM assesses performance for the Company, monitors budget versus actual results and determines how to allocate resources based on consolidated net loss as reported in the consolidated statements of operations and comprehensive loss. There are no other significant expense categories regularly provided to the CODM that are not already included in the primary financial statements herein.

The Company uses a three-level hierarchy, which prioritizes, within the measurement of fair value, the use of market-based information over entity-specific information for fair value measurement based on the nature of inputs used in the valuation of an asset or liability as of the measurement date. Fair value focuses on an exit price and is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The inputs or methodology used to estimate the fair value of financial instruments are not necessarily an indication of the risk associated with those financial instruments. The three-level hierarchy for fair value measurement is defined as follows:

Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.

Level 2: Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liabilities.

Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity).

Management believes that the carrying amounts of the Company’s financial instruments, including cash and cash equivalents, accounts receivable, accrued expenses and accounts payable approximate fair value due to the short-term nature of these instruments.

Cash and Cash Equivalents

The Company’s cash and cash equivalents include short-term highly-liquid investments with an original maturity of 90 days or less when purchased and are carried at fair value in the accompanying consolidated balance sheets. The Company considers all highly-liquid investments with a remaining maturity of three months or less at the date of purchase to be cash. Cash consists primarily of amounts in checking and savings accounts.

Marketable Securities

The Company’s marketable securities consist of investments in U.S. agency securities and corporate bonds that are classified as available-for-sale. The securities are carried at fair value with the unrealized gains and losses included in other comprehensive loss, a component of stockholders’ equity. Realized gains, losses, and declines in value determined to be other than temporary are included in the Company’s consolidated statements of operations and comprehensive loss. If any adjustment to fair value reflects a decline in the value of the investment that the Company considers to be “other than temporary,” the Company reduces the investment to fair value through a charge to the consolidated statements of operations and comprehensive loss. No such adjustments were necessary during the periods presented.

Accounts Recei vable and Allowance for Credit Losses

Accounts receivable are recorded at the invoiced amount, do not bear interest, and are typically due 30 days from the invoice date. The Company generally does not require collateral from its customers and maintains an allowance for anticipated credit losses inherent in its accounts receivable portfolio. In establishing the required allowance, management considers historical bad debts, current customer receivable balances, age of customer receivable balances and the customers’ financial condition, all of which are subject to change. Additionally, the Company monitors activities and considers future reasonable and supportable forecasts of economic conditions to adjust all general and customer specific reserve percentages, as necessary. Balances recorded for estimated credit losses are written-off when they are determined to be uncollectible. The following table sets forth activities in the allowance for credit losses for the periods indicated:

Year Ended December 31,
(in thousands)20252024
Allowance for credit losses, beginning balance$2,239$4,011
Net charges to expense or (recovery)236(1,629)
Write-offs(2,119)(143)
Allowance for credit losses, ending balance$356$2,239

Inventory

In accordance with ASC Topic 330, “Inventory”, inventory is valued at the lower of cost or net realizable value (“NRV”) with cost determined under the first-in, first-out (“FIFO”) method. The determination of NRV involves numerous judgments, including estimated average selling prices based upon recent sales volumes, industry trends, existing customer orders, current contract price, future demand, pricing for the Company’s products and technological obsolescence of the Company’s products. Inventory that is obsolete, in excess of the Company’s forecasted demand or is anticipated to be sold at a loss is written down to its NRV based on expected demand and selling prices.

Property and equipment, net

Property and equip ment is stated at cost, less accumulated depreciation. Cost includes amounts paid to acquire or construct the asset as well as any expenditure that substantially adds to the value of or significantly extends the useful life of an existing asset. Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the assets, which ranges from 1 to 25 years. Leasehold improvements are amortized over the shorter of the lease term or expected useful lifeof the improvements.

Leases

The Company determines if an arrangement is or contains a lease at inception. Operating lease assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments over the lease term.

Operating lease assets and liabilities are recognized based on the present value of the remaining lease payments discounted using the Company’s incremental borrowing rate. Operating lease assets also include initial direct costs incurred and prepaid lease payments, minus any lease incentives. The Company’s lease terms include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense is recognized on a straight-line basis over the lease term.

The Company combines the lease and non-lease components in determining the operating lease assets and liabilities. The Company elected to not record right of use(“ROU”) assets or corresponding lease liabilities on the Company’s consolidated balance sheet for short term leases with an initial lease term of 12 months or less and purchase options the Company is not reasonably certain will be exercised.

Long-Lived Assets

The Company reviews its long-lived assets, which consist ofproperty and equipment, net and operating lease right of use assets, forimpairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. Recoverability of assets held and used is measured by comparison of the carrying amount ofan asset to future net cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets. Assets to be disposed of are reported at the lower of their carrying cost amount or fair value less cost to sell. No impairment losses were identified for the years ended December 31, 2025, and 2024.

Goodwill and Intangible Assets

Goodwill represents the excess of the purchase price over the identifiable tangible and intangible assets acquired in addition to liabilities assumed arising from theacquisition of Tigo Energy AI Ltd (f/k/a Foresight Energy, Ltd. (“fSight”)) in 2023. Initially the Company measures goodwill based upon the value of the consideration paid plus or minus net assets assumed. The goodwill arising from the Company’s acquisition is attributable to the value of the potential expanded market opportunity with new customers.

Intangible assets have either an identifiable or indefinite useful life. Intangible assets are recorded at cost or when acquired as part of a business combination at estimated fair value. Intangible assets with identifiable useful lives are amortized on a straight-line basis over their economic or legal life, whichever is shorter. The Company’s amortizable intangible assets consist primarily of patents, developed technology, and customer relationships. The useful life of these intangible assets ranges from 6.7 to 10 years. We evaluate the recoverability of finite-lived intangible assets for impairment whenever there are triggering events or circumstances that may indicate the carrying amount of such assets may not be recoverable.

Goodwill is not amortized but is subject to annual impairment testing in the fourth quarter unless circumstances dictate more frequent assessments. The Company will perform an annual impairment assessment for goodwill and more frequently whenever events or changes in circumstances indicate that the fair value of the asset may be less than the carrying amount.

Customer Deposits

Customer deposits consist of deposits received by the Company, as required on certain contracts and agreements, which are refundable at the termination of the contract. Customer deposits are recorded in deferred revenue, current portion within the consolidated balance sheet.

Product Warranties

The Company estimates the cost of its warranty obligations based on several key estimates: the warranty period (which can vary from 5 to 25 years depending on the product), its historical experience of known product failure rates, costs of materials to repair or replace defective products and parts, and service delivery costs incurred in correcting product failures. In addition, from time to time, specific warranty accruals may be made if unforeseen technical problems arise. Should the actual experience relative to these factors differ from the estimates, the Company may be required to record additional warranty reserves. Product warranty costs are recorded as expense to cost of revenue based on customer history, historical information and current trends.

The following table summarizes the changes in product warranty liability:

Year Ended December 31,
(in thousands)20252024
Balance at the beginning of the period$5,798$5,632
Provision for warranty issued during period2,9681,284
Changes in estimate1,154(758)
Settlements(576)(360)
Balance at the end of the period$9,344$5,798

Convertible Promissory Note and Debt Extinguishment

On January 9, 2023, the Company entered into a convertible promissory note purchase agreement (the “Note Purchase Agreement”) with L1 Energy Capital Management S.a.r.l (“L1 Energy”) pursuant to which the Company issued a convertible promissory note in an aggregate principal amount of$50.0 million (the “Convertible Promissory Note”).

On December 17, 2025, the Company extinguished the Convertible Promissory Note. The Company recognized a loss on extinguishment of the Convertible Promissory Note of$1.1 million during the year ended December 31, 2025, which is included in other (income) expense, net in the consolidated statements of operations and comprehensive loss. Gains and losses on extinguishment of debt are recognized upon extinguishment of debt instruments and are measured as the difference between the reacquisition price and the net carrying amount of the debt at the extinguishment date. Please refer to Note 7, “Debt,” for additional details regarding the Convertible Promissory Note and the extinguishment transaction.

Revenue Recognition

The Company complies with ASC Topic 606,“Revenue from Contracts with Customers”(“ASC Topic 606”) for revenue recognition. In accounting for contracts with customers:

The Company determines revenue recogni tion through the following steps:

Identification of the contract, or contracts, with a customer

Identification of the performance obligations in the contract

Determination of the transaction price

Allocation of the transaction price to the performance obligations in the contract

Recognition of revenue when, or as, the Company satisfies a performance obligation

Revenues are recognized when control of the promised goods or services are transferred to the Company’s customers in an amount that reflects the consideration that is expected to be received in exchange for those goods or services. The Company generates all of its revenue from contracts with its customers. A description of the principal activ ities from which the Company generates revenue are as follows:

Products Delivered at a Point in Time. The Company’s primary source of revenue is the sale of its hardware products. The Company’s hardware products are fully functional at the time of shipment and do not require modification or customization for customers to use the products. The Company sells its products primarily to distributors that resell the Company’s products to end users. Distributors do not have general rights of return and generally order goods for immediate resale to end customers. The Company uses present right to payment and transfer of title as indicators to determine the transfer of control to the customer. The Company recognizes revenue at a point in time when its performance obligation has been satisfied and control of the product is transferred to the customer, which generally aligns with shipping terms. Contract shipping terms include ExWorks (“EXW”), FOB Shipping Point and FOB Destination incoterms. Under EXW (meaning the seller fulfills its obligation to deliver when it makes goods available at its premises, or another specified location, for the buyer to collect), the performance obligation is satisfied and control is transferred at the point when the customer is notified that their order is available for pickup. Under FOB Shipping Point, control is transferred to the customer at the time the good is transferred to the shipper and under FOB Destination, at the time the customer receives the goods. We deduct sales returns to arrive at net revenue. Sales tax and other similar taxes are excluded from revenues. The Company has made the election to account for shipping and handling as activities to fulfill the promise to transfer the product and as such records amounts charged to customers for shipping and handling as revenue and the related costs are included in cost of revenues.

Services Delivered Over Time. Revenue recognized from services delivered over time, including monitoring services and Predict+ SaaS services, represented 1.8% of total net revenue for the year ended December 31, 2025. The balance was immaterial for the year ended December 31, 2024. Sales of the Company’s hardware products can include the Company’s free or premium web-based monitoring service. These monitoring services represent a single performance obligation and is deferred at the sale date. The free monitoring service revenue is recognized ratably over an estimated service period of approximately 5 yearsas the service is performed. The premium monitoring service is recognized ratably overthe contracted service period, up to 20 years, as the service is performed. The full consideration of monitoring service revenue represented less than 1% of the total net revenue during the years ended December 31, 2025, and 2024. The allocation of revenue between the hardware and monitoring service deliverables is based on the Company’s best estimate of the standalone selling price determined by considering multiple factors, including internal costs, gross margin and historical selling practices. Additionally, the Company provides software as a service (“SaaS”) platform for our Predict+ technology. The Predict+ service revenue is recognized ratably over a contract service period up to 11 years, as the service is performed.

The Company typically incurs incremental costs to acquire customer contracts related to the Company’s hardware sales in the form of sales commissions; however, because the expected benefit from these contracts is one year or less, the Company follows the ASC Topic 606 practical expedient and expenses these amounts as incurred.

The Company records certain contra revenue promotions as variable consideration and recognizes these promotions at the time the related revenue is recorded.

Deferred revenue or contract liabilities consists of payments received from customers in advance of revenue recognition for the Company’s products and service. The current portion of deferred revenue represents the unearned revenue that will be earned within 12 months of the balance sheet date. Correspondingly, noncurrent deferred revenue represents the unearned revenue that will be earned after 12 months from the balance sheet date.

See Note 5 for additional information.

Cost of Revenue

The Company includes the following in cost of revenue: product costs, warranty costs, operation personnel and logistics costs, inventory reserve charges, shipping and handling costs, hosting service costs related to the monitoring service, depreciation and amortization of manufacturing test equipment, and employee-related expenses which primarily consists of employees’ salaries and health insurance expense.

Stock-Based Compensation

The Company measures the cost of employee and non-employee services received in exchange for stock-based awards based on the grant-date fair value of the award. The Company uses the Black-Scholes option pricing model to value its stock option awards. The fair value of restricted stock units (“RSU”) granted is determined based on the price of the Company’s common stock on the date of grant. The fair value of non-market‑based performance stock units (“PSUs”) granted is determined based on the market value of the Company’s common stock at the closing market price on the grant date, and the expense is recognized based on whether achievement of performance-based vesting conditions are probable. The Company recognizes compensation expense of its awards over the requisite service period, which is typically the vesting period, for the entire award using the straight-line attribution method. The Company accounts for forfeitures as they occur.

Estimating the fair value of options requires the input of subjective assumptions, including the estimated fair value of the Company’s common stock, the expected life of the options, stock price volatility, the risk-free interest rate and expected dividends. The assumptions used in the Company’s Black-Scholes option-pricing model represent management’s best estimates and involve a number of variables, uncertainties and assumptions and the application of management’s judgment, as they are inherently subjective.

Research and Development

Research and development expenses are comprised of costs to design, develop, test or significantly improve our solar energy hardware and software solutions and primarily include personnel costs and facility-related expenses.

Advertising Costs

All advertising costs are expensed as incurred and included in sales and marketing expenses. Advertising expenses incurred by the Company were$0.6 million and$0.6 million for the years ended December 31, 2025, and 2024, respectively.

Income Taxes

Income taxes are accounted for under the asset-and-liability method as required by ASC Topic 740, “Income Taxes” (“ASC Topic 740”). Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period corresponding to the enactment date. Under ASC Topic 740, a valuation allowance is required when it is more likely than not that all or some portion of the deferred tax assets will not be realized through generating sufficient future taxable income.

ASC Topic 740 defines the criterion an individual tax position must meet for any part of the benefit of the tax position to be recognized in financial statements prepared in conformity with GAAP. The Company may recognize the tax benefit from an uncertain tax position only if it is more likely than not such tax position will be sustained on examination by the taxing authorities, based solely on the technical merits of the respective tax position. The tax benefits recognized in the consolidated financial statements from such a tax position should be measured based on the largest benefit having a greater than 50% likelihood of being realized upon ultimate settlement with the tax authority. In accordance with the disclosure requirements of ASC Topic 740, the Company’s policy on income statement classification of interest and penalties related to income tax obligations is to include such items as part of income tax expense.

The Tax Cuts and Jobs Act (“TCJA”) subjects a U.S. shareholder to tax on global intangible low-taxed income (“GILTI”) earned by certain foreign subsidiaries. Under GAAP, the Company can make an accounting policy election to either treat taxes due on the GILTI inclusion as a current period expense or factor such amounts into the Company’s measurement of deferred taxes. The Company elected to treat the GILTI inclusion as a period expense.

Comprehensive Loss

Comprehensive loss consists of two components, net loss and other comprehensive loss. Other comprehensive loss refers to gains and losses that are recorded as an element of stockholders’ equity but are excluded from net loss. The Company’s other comprehensive loss consists of the change in net unrealized gain on marketable securities.

Recently Adopted Accounting Pronouncements

In December 2023, the FASB issued ASU No. 2023-09, “Improvements to Income Tax Disclosures”(“Topic 740”). This ASU requires disaggregated information about a reporting entity’s effective tax rate reconciliation as well as additional information on income taxes paid. The ASU is effective on a prospective basis for annual periods beginning after December 15, 2024, although retrospective application is permitted. We have adopted and applied the guidance under the ASU for the year ended December 31, 2025, using the prospective method. See enhanced disclosures in our consolidated statement of cash flows and Note 13. “Income Taxes” in the accompanying notes to the consolidated financial statements for further detail.

Recently issued accounting pronouncements not yet adopted

In July 2025, the FASB issued ASU No.2025-05 — Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets, which added a practical expedient that assumes that current conditions as of the balance sheet date do not change for the remaining life of the asset when estimating expected credit losses for current accounts receivable and current contract assets. The guidance is effective for annual periods beginning after December 15, 2025. The Company plans to adopt this ASU on the effective date and does not expect it to have a material impact on the Company’s financial statements.

In November 2024, the FASB issued ASU 2024-03, “Income Statement — Reporting Comprehensive Income — Expense Disaggregation Disclosures(“Subtopic 220-40”): Disaggregation of Income (Loss) Statement Expenses”(“ASU 2024-03”). ASU 2024-03 requires disaggregation of certain costs and expenses included in each relevant expense caption on the Company’sconsolidated statements of operations and comprehensive loss in a separate note to the financial statements at each interim and annual reporting period, including amounts of purchases of inventory, employee compensation, depreciation, and intangible asset amortization. ASU 2024-04 is effective fiscal years beginning after December 15, 2026, and interim reporting periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of adopting ASU 2024-03.

In September 2025, the FASB issued ASU No. 2025-06—Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software, which removed the language around project stages that was used to assess when costs could be capitalized for an internal-use software. The update also requires internal-use software to be disclosed under the ASC 360 Property, Plant, and Equipment guidance. The guidance is effective for annual periods beginning after December 15, 2027. The Company is currently assessing the impact of this ASU on the Company’s accounting policies and the financial statements.

Net Loss Per Share

Basic net loss per share of common stock is computed by dividing net loss by the weighted-average number of shares of common stock outstanding during each period, without consideration for potential dilutive shares of common stock. Diluted net loss per share of common stock is computed by dividing the net loss by the weighted-average number of common share equivalents outstanding for the period determined using the treasury-stock method and if-converted method, as applicable. In periods in which the Company reports a net loss, diluted net loss per share will be the same as basic net loss per share since dilutive shares are not assumed to have been issued if their effect is antidilutive. As a result, for the periods in which the Company experienced a net loss, the weighted-average shares used to calculate both basic and diluted net loss per share are the same.

For following table sets forth the computation of basic and diluted net loss per share to common stockholders:

Year Ended December 31,
(in thousands, except share and per share data)20252024
Numerator:
Net loss$(1,880)$(62,746)
Denominator:
Weighted-average shares of common stock outstanding – basic and diluted65,007,76260,263,190
Net loss per share of common stock – basic and diluted$(0.03)$(1.04)

The Company excluded the effect of the below elements from our calculation of diluted loss per share, as their inclusion would have been anti-dilutive. These amounts represent the number of instruments outstanding at the end of the period.

As of December 31,
20252024
Outstanding stock options and restricted stock units4,457,0534,673,638
Convertible promissory note—5,305,861
4,457,0539,979,499

Fair Value Measurements

The following fair value hierarchy table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis:

Fair value measurement atreporting date using
(in thousands)(Level 1)(Level 2)(Level 3)
Assets:
Cash equivalents:
Money market accounts$126$—$—
Assets:
Cash equivalents:
Money market accounts$6,839$—$—
U.S. agency securities$—$499$—
Marketable securities:
Corporate bonds$—$2,018$—
U.S. agency securities$—$6,138$—

During the year ended December 31, 2025, the Company sold all of its available-for-sale marketable securities. Accordingly, the Company held no marketable securities as of December 31, 2025. The proceeds from the sales of marketable securities were used to fund the extinguishment of the Company’s Convertible Promissory Note. The following is a summary of the changes in fair value of the Company’s marketable securities as of December 31, 2024:

(in thousands)Amortized costUnrealized gainUnrealized lossFair value
Available-for-sale marketable securities:
Current assets
Corporate bonds$2,019$—$(1)$2,018
U.S. agency securities6,1353$—6,138
Total available-for-sale marketable securities$8,154$3$(1)$8,156

The carrying amounts of cash and cash equivalents, restricted cash, marketable securities, accounts receivable, accounts payable, and customer deposits approximate fair value due to their short-term nature.

Net Revenue

Geographic Net Revenues

The Company sells its products in the Americas (North and South America), EMEA (Europe, Middle East, and Africa), and APAC (Asia-Pacific) regions.

The following table summarizes net revenue by major geographic region, based on customers’ location (in millions):

Year Ended December 31,
(in thousands)20252024
EMEA(1)$69,478$32,593
Americas(2)26,53313,132
APAC7,5258,289
Total net revenue$103,536$54,014

(1)

Our net revenues generated from the Germany, Czech Republic, the United Kingdom and Italy and represented 15.5%,15.2%,15.1%, and 10.3% of our total net revenue for the year ended December 31, 2025, respectively. Our net revenues generated from Germany and the Czech Republic represented 16.3% and 11.8% of our total net revenue for the year ended December 31, 2024, respectively.

(2)

Our net revenues generated from the United States represented 23.3% and 20.7% of our total net revenue for the years ended December 31, 2025, and 2024, respectively.

Deferred Revenue

Deferred revenue or contract liabilities consists of payments received from customers in advance of revenue recognition for the Company’s products and service. The current portion of deferred revenue represents the unearned revenue that will be earned within 12 months of the balance sheet date. Correspondingly, noncurrent deferred revenue represents the unearned revenue that will be earned after 12 months from the balance sheet date.

The following table summarizes the changes in deferred revenue:

Year Ended December 31,
(in thousands)20252024
Balance at the beginning of the period$1,169$801
Deferral of revenue17,7387,585
Recognition of unearned revenue(17,086)(7,217)
Balance at the end of the period$1,821$1,169

As of December 31, 2025, the Company expects to recognize$1.8 million from remaining performance obligations over a weighted-average term of 2.9 years. The Company recognized approximately$0.5 million and$1.0 million in revenue that was included in the beginning deferred revenue balance during the years ended December 31, 2025, and 2024, respectively.

Supplementary Balance Sheet and Geographic Information

Selected financial data as of the dates presented below is as follows (in thousands, except useful life data):

InventoryDecember 31,2025December 31,2024
Raw materials$186$662
Finished goods31,10021,335
Inventory$31,286$21,997

Inventory reserves were$14.3 million and$24.1 million as of December 31, 2025, and 2024, respectively.

Property and equipment, netEstimated Useful LifeDecember 31,2025December 31,2024
Machinery and equipment1 - 25 years$6,643$6,051
Vehicles5 years3131
Computer software5 years212212
Computer equipment5 years656602
Furniture and fixtures5 years222216
Leasehold improvements2 - 25 years357465
Construction-in-process140—
8,2617,577
Less: Accumulated depreciation5,6094,765
Property and equipment, net$2,652$2,812

For the years ended December 31, 2025, and 2024 the Company recorded depreciation expense of$1.0 million and$0.9 million, respectively in the consolidated statements of operations.

Accrued expenses and other current liabilitiesDecember 31,2025December 31,2024
Accrued vacation$980$924
Accrued compensation3,8081,119
Accrued interest—1,187
Accrued professional fees429894
Accrued warehouse and freight43917
Accrued other(1)1,7681,773
Other current liabilities101547
Accrued expenses and other current liabilities$7,129$7,361

(1)

Accrued other as of December 31, 2025, and December 31, 2024, primarily consist of accrued expenses related to legal and tax expense.

Long-lived assets by Geographic Region

The following table presents the Company’s long-lived assets, which consist of tangible property and equipment, net of depreciation, and operating ROU assets, by geographic region (in thousands):

Long-lived assetsDecember 31,2025December 31,2024
EMEA(1)$1,151$1,545
Americas(2)2,247719
APAC(3)1,5922,124
Total long-lived assets$4,990$4,388

(1)

As of December 31, 2025, and 2024,18.4% and 26.6% of the Company’s total long-lived assets were located in Israel.

(2)

As of December 31, 2025, and 2024,45.1% and 16.4% of the Company's total long-lived assets were located in the U.S.

(3)

As of December 31, 2025,21.1% and 10.8% of the Company's total long-lived assets were located in Thailand and China, respectively. As of December 31, 2024,35.5% and 13.0% of the Company’s total long-lived assets were located in Thailand and China, respectively.

Debt

Convertible Promissory Notes and Debt Extinguishment

On January 9, 2023, the Company entered into a convertible promissory note purchase agreement (“Note Purchase Agreement”) with L1 Energy Capital Management S.a.r.l in exchange for cash of$50.0 million (“Convertible Promissory Notes”). Outstanding borrowings under the Convertible Promissory Notes bear interest at a rate of 5.0% per year. The principal amount was due at the maturity date of January 9, 2026, andinterest is payable semiannually beginning in July 2023.

Under the terms of the Note Purchase Agreement, the Convertible Promissory Note may be converted at the option of the note holder into the Company’s common stock or an equivalent equity instrument resulting from a public company event. The conversion price is based on a pre-money valuation divided by the aggregate number of the Company’s outstanding shares at the issuance date and adjusted for any cash dividends paid on the Company’s capital stock. The conversion price and number of conversion shares are subject to standard anti-dilution adjustments. Upon a change of control event the note holder may (i) convert the Convertible Promissory Note immediately prior to the event into the Company’s common stock at a conversion price equal to the lesser of the Convertible Promissory Note’s original conversion price or the price per share of the Company’s common stock implied by the change of control event transaction agreement or (ii) require the redemption of the Convertible Promissory Note in cash, including the payment of a make-whole amount of all unpaid interest that would have otherwise been payable had the Convertible Promissory Note remained outstanding through the maturity date. The Company’s obligations under the Note Purchase Agreement may be accelerated, subject to customary grace and cure periods, upon the occurrence of an event of default. The Note Purchase Agreement defines events of default as the occurrence of any one of the following; 1) a default in payment of any part of principal or unpaid accrued interest on the Convertible Promissory Note when due and payable; 2) the Company issues a written statement that it is unable to pay its debts as they become due, or the Company files a voluntary petition for bankruptcy or insolvency proceeding, the Company, or its directors or majority stockholders take action looking to the dissolution or liquidation of the Company; 3) the involuntary bankruptcy of the Company defined as the commencement of any proceeding against the Company seeking any bankruptcy reorganization; 4) the Company defaults on any of its performance obligations under the Note Purchase Agreement; 5) any material portion of the assets of the Company or any subsidiary of the Company is seized or a levy is filed against such assets; 6) a default that remains uncured on any other agreement evidencing the indebtedness of the Company or its subsidiaries for an amount of $10 million or more whose terms allow for the acceleration of the repayment of such indebtedness due to the consummation of the transactions contemplated in this Note Purchase Agreement.

On December 17, 2025, the Company extinguished the Convertible Promissory Notes by paying$51.3 million in cash which included principal, accrued interest and fees associated with the extinguishment. The reacquisition price of the debt was higher than the related carrying value at the extinguishment date, therefore resulting in a loss on extinguishment of Convertible Promissory Notes of$1.1 million. The loss on extinguishment of the Convertible Promissory Note is included in other (income) expense, net in the consolidated statements of operations and comprehensive loss.

The Company hadno outstanding debt as of December 31, 2025. Long-term debt consisted of the following as of December 31, 2024 (in thousands):

Convertible Promissory Note$50,000
Less: unamortized debt discount and issuance costs(9,489)
Long-term debt, net of unamortized debt discount and issuance costs$40,511

Commitments and Contingencies

Employment Agreements

The Company entered into employment agreements with key personnel providing compensation and severance in certain circumstances, as defined in the respective employment agreements.

Legal

The Company is subject to legal proceedings and claims that have arisen in the ordinary course of business and that have not been fully resolved. Some litigation or legal disputes may not be covered by insurance. While the Company intends to vigorously defend itself with respect to such disputes, any potential outcomes resulting from such claims would be inherently difficult to quantify. The Company makes a provision for a liability relating to legal matters when it is both probable that a liability has been incurred, and the amount of the loss can be reasonably estimated. During the year ended December 31, 2025, the Company has not recorded a material loss with respect to any legal claims or other legal matters arising in the normal course of business.

Indemnification Agreements

From time to time, in its normal course of business, the Company may indemnify other parties with which it enters into contractual relationships, including customers, lessors and parties to other transactions with the Company. The Company may agree to hold other parties harmless against specific losses, such as those that could arise from third-party claims or a breach of representation or covenant. It may not be possible to determine the maximum potential amount of liability under such indemnification agreements due to the unique facts and circumstances that are likely to be involved in each particular claim and indemnification provision. In addition, we believe the likelihood is remote that payments under any indemnification agreements described above will have a material effect on the Company’s consolidated financial statements.

The Company has also indemnified its Directors and Executive Officers, to the extent legally permissible, against all liabilities reasonably incurred in connection with any action in which such individual may be involved by reason of such individual being or having been a Director or Executive Officer.

The Company believes the current estimated fair value of any obligation from these indemnification agreements is minimal; therefore, these consolidated financial statements do not include a liability for potential indemnification-related obligations at December 31, 2025.

Common and Preferred Stock

Common Stock and Preferred Stock

The Company is authorized to issue 150,000,000 shares of common stock. Each share ofcommon stock entitles the holder to one vote on all matters submitted to a vote of the Company’s stockholders.

The Company is authorized to issue 10,000,000 shares of Preferred Stock. As of December 31, 2025, there wasno Preferred Stock outstanding.

Common Stock Reserved for Future Issuance

Shares ofcommon stock reserved for future issuance were as follows:

Stock options issued and outstanding4,707,635
Restricted stock units issued and outstanding3,530,813
Performance stock units issued and outstanding1,760,048
Shares available for grant under 2023 Equity Incentive Plan550,227
Total shares reserved for future issuance10,548,723

At-The-Market Offering Program

In November 2024, we entered into an At-The-Market Offering Agreement (the “ATM Agreement”) with Craig-Hallum Capital Group LLC (the “Sales Agent”), allowing for the sale of common stock with an aggregate gross offering price of up to$14.2 million (the “2024 ATM Program”). Under the ATM Agreement, the Sales Agent may sell shares in an “at-the-market” offering under Rule 415(a)(4) of the Securities Act, including sales on Nasdaq or other trading markets, to or through market makers, directly to the Sales Agent as principal, or in negotiated transactions at prevailing market prices. The offering of Shares pursuant to the ATM Agreement will terminate upon (a) five business days’ advance notice from the Company to the Sales Agent or five business days’ advance notice from the Sales Agent to the Company or (b) otherwise by mutual agreement of the parties pursuant to the terms of the ATM Agreement. Sales under the 2024 ATM Program are subject to a maximum commission of up to 3.0% of the gross proceeds per share sold through the Sales Agent. As of December 31, 2025, the 2024 ATM Program was fully utilized, and there areno additional shares available for issuance under the program.

The following is a summary of the shares issued under our 2024 ATM Program during the year ended December 31, 2025 (in thousands except average price per share):

Period EndedShares IssuedAverage Net Price Per Share(1)Gross ProceedsNet Proceeds
December 31, 20258,309,168$1.66$14,205$13,779

(1)

Represents the average price per share after commission.

Stock-Based Compensation

The Company adopted the 2008 Stock Plan (“2008 Plan”) under which it may issue stock options to purchase shares of common stock, and award restricted stock and stock appreciation rights to employees, Directors and consultants. The 2008 Plan expired in March 2018 and all award issuance therefore ceased. Options generally vest over a four-year period with a one-year cliff. The option term is no longer than five years for incentive stock options for which the grantee owns greater than 10% of the Company’s capital stock and no longer than 10 years for all other options. The Company has a repurchase option on unvested restricted stock exercisable upon the voluntary or involuntary termination of the purchaser’s employment with the Company for any reason. The Company’s repurchase right lapses in accordance with the vesting terms. Options outstanding under the 2008 Plan will remain outstanding until they are exercised, canceled or expire.

In May 2018, the Company adopted the 2018 Stock Plan (“2018 Plan”) under which the Company may issue stock options to purchase shares of common stock, and award restricted stock and stock appreciation rights to employees, Directors and consultants.

Under the 2018 Plan, the Board of Directors may grant incentive stock options or nonqualified stock options. Incentive stock options may only be granted to Company employees. The 2018 Plan expired in May 2023 and all award issuance therefore ceased. The exercise price of incentive stock options and non-qualified stock options cannot be less than 100% of the fair value per share of the Company’s common stock on the grant date. If an individual owns more than 10% of the Company’s outstanding capital stock, the price of each share incentive stock option will be at least 110% of the fair value. Fair value was determined by the Board of Directors. Options generally vest over a four-year period with a one-year cliff. The option term is no longer than five years for incentive stock options for which the grantee owns greater than 10% of the Company’s capital stock and no longer than 10 years for all other options. The Company has a repurchase option on unvested restricted stock exercisable upon the voluntary or involuntary termination of the purchaser’s employment with the Company for any reason. The Company’s repurchase right lapses in accordance with the vesting terms. Options outstanding under the 2018 Plan will remain outstanding until they are exercised, canceled or expire.

In May 2023, the Company adopted the 2023 Equity Incentive Plan (“2023 Plan”) under which the Company may issue stock options to purchase shares of common stock, award restricted stock, restricted stock units (“RSU”), performance stock units (“PSUs”), dividend equivalents, stock appreciation rights, and other stock-based or cash-based awards to employees, Directors and consultants.

Stock options granted to newly hired employees generally vest over afour-year period, following the date of grant, with 25% vesting on the first anniversary of the grant date and the remaining vesting in equal monthly installments thereafter, and grants of additional stock options to employees generally vest in equal monthly installments over a four-year period with no cliff vesting. As of December 31, 2025,844,406 stock options granted under the 2023 Plan had vested and were exercisable. There have been 3,825 stock options exercised under the 2023 Plan. The RSUs generally vest over athree-year period, following the date of grant, with a third of the award vesting on each year on the annual anniversary of the grant date.

Collectively, the 2008 Stock Plan, 2018 Stock Plan and the 2023 Equity Incentive Plan are referred to as “the Plans”.

The Company measures stock-based awards at their grant-date fair value and records compensation expense on a straight-line basis over the vesting period of the awards. The Company also measures the PSU awards at their grant-date fair value. If the performance goals are not met, no compensation expense is recognized and any recognized compensation expense is reversed. The Company recorded stock-based compensation expense in the following expense categories in its accompanying consolidated statements of operations and comprehensive loss:

Year Ended December 31,
(in thousands)20252024
Cost of sales$87$141
Research and development9251,231
Sales and marketing2,4602,104
General and administrative4,3914,245
Total stock-based compensation(1)$7,863$7,721

(1)

A portion of the stock-based compensation in the table above pertains to Incentive Stock Options, which are nondeductible and the balance that is related to stock-based compensation is offset by valuation allowance. Therefore, we have excluded the income tax effect associated with the stock-based compensation in the calculation above.

Stock Options

The following table summarizes stock option activity for the Plans for the year ended December 31, 2025:

NumberofsharesWeightedaverageexercise priceper shareWeightedaverageremainingcontractualterm (years)Aggregate intrinsic value (in 000’s)
Outstanding at December 31, 20245,403,090$1.747.18
Exercised(342,044)$0.62
Forfeited/expired(353,411)$4.97
Outstanding at December 31, 20254,707,635$1.586.61$1,158
Exercisable at December 31, 20252,967,729$1.525.46$1,072

As of December 31, 2025, the total unrecognized compensation expense related to unvested stock option awards was$4.0 million, which the Company expects to recognize over a weighted-average period of 2.2 years.

The fair value of options is estimated using the Black-Scholes option pricing model, which takes into account inputs such as the exercise price, the value of the underlying common stock at the grant date, expected term, expected volatility, risk-free interest rate and dividend yield. The fair value of each grant of options was determined using the methods and assumptions discussed below.

The expected term of employee options with service-based vesting is determined using the “simplified” method, as prescribed in the U.S. Securities and Exchange Commission’s Staff Accounting Bulletin (“SAB”) No. 107, whereby the expected life equals the arithmetic average of the vesting term and the original contractual term of the option due to the Company’s lack of sufficient historical data. The expected term of non-employee options is equal to the contractual term.

The expected volatility is based on historical volatilities of similar entities within the Company’s industry which were commensurate with the expected term assumption as described in SAB No. 107.

The risk-free interest rate is based on the interest rate payable on U.S. Treasury securities in effect at the time of grant for a period that is commensurate with the assumed expected term.

The expected dividend yield is 0% because the Company has not historically paid and does not expect for the foreseeable future to pay a dividend on its common stock.

As Legacy Tigo’s common stock was not publicly traded prior to the Business Combination, its Board of Directors periodically estimated the fair value of the Company’s common stock considering, among other things, contemporaneous valuations of its common stock prepared by an unrelated third-party valuation firm in accordance with the guidance provided by the American Institute of Certified Public Accountants 2013 Practice Aid, Valuation of Privately-Held-Company Equity Securities Issued as Compensation.

The Company didnot grant options during the year ended December 31, 2025. For the year ended December 31, 2024, the fair value of each stock option was estimated on the date of grant using the weighted-average assumptions in the table below:

Expected volatility72.4%
Risk-free interest rate3.5%
Expected term (in years)6.0
Expected dividend yield—%

Restricted Stock Units

The following table summarizes RSU activity for the 2023 Plan for the year ended December 31, 2025:

NumberofsharesWeightedaveragegrant date fair value per share
Outstanding at December 31, 20242,103,946$3.50
Granted2,729,301$1.48
Vested(1,248,324)$3.06
Forfeited/expired(54,110)$4.55
Outstanding at December 31, 20253,530,813$2.08

As of December 31, 2025, the total unrecognized compensation expense related to unvested RSUs was$5.5 million, which the Company expects to recognize over a weighted-average period of 1.9 years.

Performance Stock Units

As of December 31, 2025, and 2024, the Company had an outstanding balance of 1,760,048 PSUs, with a weighted average grant date fair value per share of$1.58. The PSUs vest over athree-year period beginning on January 1, 2025, with one-third of the award eligible to vest at the end of each fiscal year through December 31, 2027, based on the Company’s level of achievement of certain performance-based criteria tied to annual net revenue and adjusted EBITDA targets. The PSUs were valued using the market value of the Company’scommon stock at the closing market price on the grant date.

As of December 31, 2025, an aggregate of 432,851 PSUs had vested in accordance with the terms of the Company’s equity incentive plans. The related shares were issued in March 2026.

During the year ended December 31, 2025, the Company recognized stock-based compensation expense related to PSUs of approximately$1.3 million, which was recorded within research and development, sales and marketing and general and administrative expense in the consolidated statements of operations.

As of December 31, 2025, the total unrecognized compensation expense related to PSUs that were deemed probable to vest at the end of their respective performance period was$0.7 million, which the Company expects to recognize over a weighted-average period of 1.5 years.

Leases

As a lessee, the Company currently leases office space and vehicles in the United States, Italy, Israel, China, Philippines and Thailand. All of the Company’s leases are classified as operating leases. The Company has no leases classified as finance or sales-type leases. For leases with terms greater than 12 months, the Company records the related assets and obligations at the present value of lease payments over the term. Many of the Company’s leases include rental escalation clauses, renewal options and/or termination options that are factored into the Company’s determination of lease payments.

When available, the Company uses the rate implicit in the lease to discount lease payments to present value; however, most of its leases do not provide a readily determinable implicit rate. Therefore, the Company must estimate itsincremental borrowing rate to discount the lease payments based on information available at lease commencement. The majority of the Company’s leases have remaining lease terms of one tofive years, some of which include options to extend the leases for up to eight years, and some of which include options to terminate the leases withinone year.

The components of lease expense are as follows (in thousands):

Year Ended December 31,
(in thousands)20252024
Operating lease costs$1,063$1,302
Variable lease costs388510
Total lease cost$1,451$1,812

Other information related to leases was as follows:

Year Ended December 31,
Supplemental Cash Flows Information (in thousands)20252024
Operating lease right of use assets obtained in exchange for operating lease liabilities$1,668$195
Cash paid for amounts included in the measurement of lease liabilities$906$1,362
December 31, 2025December 31, 2024
Weighted-average remaining lease term (years)3.02.5
Weighted-average discount rate6.6%4.9%

Future maturities of lease liabilities were as follows as of December 31, 2025:

(in thousands)Operating Leases
2026$1,028
2027920
2028658
2029386
2030—
Thereafter—
Total future minimum lease payments$2,992
Less: imputed interest319
Present value of lease liabilities$2,673

Goodwill and Intangible Assets

As of December 31, 2025, the Company had a goodwill balance of$12.2 million. The goodwill balance is related to the acquisition of Tigo Energy AI Ltd (f/k/a Foresight Energy, Ltd. (“fSight)).

The Company’s intangible assets by major asset class are as follows:

(in thousands, except for useful life amounts)Weighted Average Useful Life (Years)GrossAccumulated AmortizationNet Book Value
Amortizing:
Patents6.7$450$(208)$242
Customer relationships10.0170(50)120
Developed technology10.01,820(530)1,290
Total intangible assets$2,440$(788)$1,652
(in thousands, except for useful life amounts)Weighted Average Useful Life (Years)GrossAccumulated AmortizationNet Book Value
Amortizing:
Patents6.7$450$(137)$313
Customer relationships10.0170(33)137
Developed technology10.01,820(348)1,472
Total intangible assets$2,440$(518)$1,922

The Company recognized amortization expense related to intangible assets of$0.3 million and$0.3 million for the years ended December 31, 2025, and 2024, respectively.

Amortization expense related to intangible assets at December 31, 2025, in each of the next five years and beyond is expected to be incurred as follows (in thousands):

(in thousands)Amount
2026270
2027262
2028260
2029227
2030202
Thereafter431
$1,652

Income Taxes

The domestic and foreign components of loss before income taxes consisted of the following (in thousands):

20252024
U.S. loss before income taxes$(2,079)$(60,757)
Foreign income (loss) before income taxes802(1,886)
Loss before income taxes$(1,277)$(62,643)

The provision for income taxes for the years presented is as follows (in thousands):

20252024
Current:
Federal$—$—
State——
Foreign669284
Total current$669$284
Deferred:
Federal$—$—
State——
Foreign(66)(181)
Total deferred$(66)$(181)
Provision for income taxes$603$103

The follo wing tables reconcile the statutory federal income tax rate to the effective tax rate after the adoption of ASU 2023-09 (in thousands, except percentages):

AmountPercentage
U.S. federal statutory tax rate$(268)21.0%
State and local income taxes, net of federal income tax effect(17)1.3%
Tax credits:
Research and development(90)7.1%
Change in valuation allowance(346)27.1%
Nondeductible items:
Stock based compensation578(45.2)%
Section 162(m) Compensation209(16.4)%
Other51(4.1)%
Worldwide changes in unrecognized tax benefits44(3.4)%
Foreign tax effects:
Israel
Foreign rate differential9(0.7)%
Change in valuation allowance161(12.6)%
Nondeductible Items35(2.7)%
Italy
Foreign rate differential14(1.1)%
Other(36)2.8%
Italian tax examination292(22.8)%
Australia
Foreign rate differential(1)0.1%
Other(58)4.6%
Other jurisdictions26(2.0)%
Total$603(47.2)%

The following table reconciles the statutory federal income tax rate to the effective tax rate prior to the adoption of ASU 2023-09 (in thousands, except percentages):

Tax at federal statutory rate21.0%
State tax, net of federal benefit0.9%
Research and development tax credits0.3%
Global intangible low taxed income(0.1)%
Foreign rate differential0.1%
Stock based compensation(1.5)%
Foreign tax and other0.1%
Change in valuation allowance(20.4)%
Other(0.6)%
Total(0.2)%

On July 4, 2025, the OBBB was enacted in the United States. The OBBB includes several significant tax provisions, such as the permanent extension of certain expiring provisions of the Tax Cuts and Jobs Act, modifications to the international tax framework and the restoration of certain business provisions. The legislation has multiple effective dates, with certain provisions effective in 2025 and others implemented through 2027. The Company will no longer be required to capitalize its domestic research and experimental costs under Section 174 of the Internal Revenue Code beginning with the tax year ending December 31, 2025. The Company evaluated the impact of the OBBB and determined that it did not have a material impact on the Company’s consolidated financial statements for the year ended December 31, 2025.

The components of the net deferred tax assets and deferred tax liabilities were comprised of the following (in thousands):

Years Ended December 31,
20252024
Deferred tax assets:
Net operating loss carryforwards$23,807$22,996
Research and development tax credits3,2213,146
Stock based compensation1,028506
Capitalized research costs2,2533,352
Lease liability579339
Reserves and accruals3,4682,493
Uniform capitalization on inventory3891,942
Inventory reserve3,1245,251
Other44037
Total deferred tax assets38,30940,062
Less: valuation allowance(37,144)(36,880)
Total deferred tax assets, net of valuation allowance1,1653,182
Deferred tax liabilities:
Fixed assets and intangibles(395)(451)
Right of use leased assets(506)(332)
Debt discount—(2,201)
Total deferred tax liabilities(901)(2,984)
Net deferred tax assets$264$198

The Company assesses the realizability of deferred tax assets based on the available evidence, including a history of taxable income and estimates of future taxable income. In assessing the realizability of deferred tax assets, the Company considers whether it is more likely than not that all or some portion of deferred tax assets will not be realized. Due to the history of losses incurred by the Company, management believes it is not more likely than not that substantially all of the U.S. federal, state and certain foreign deferred tax assets can be realized. Accordingly, the Company established and recorded a full valuation allowance on its U.S. domestic and certain foreign net deferred tax assets of$37.1 million and$36.9 million as of December 31, 2025, and 2024, respectively. The valuation allowance increased by$0.2 million during the year ended December 31, 2025, and increased by$12.6 million during the year ended December 31, 2024.

No deferred tax liabilities have been recorded relating to the undistributed earnings of the Company’s foreign subsidiaries since all such earnings are intended to be indefinitely reinvested. The amount of the unrecognized deferred tax liability associated with these earnings is immaterial.

Utilization of the net operating loss and tax credit carryforwards is subject to a substantial annual limitation due to the “ownership change” limitations provided by Sections 382 and 383 of the Internal Revenue Code of 1986, as amended (“IRC”) and other similar state provisions. Any annual limitation may result in the expiration of net operating loss and tax credit carryforwards before utilization. As of December 31, 2025, the Company had$74.9 million of U.S. federal net operating loss carryforwards available to reduce future taxable income, of which$40.1 million will be carried forward indefinitely for U.S. federal tax purposes and$34.8 million will expire beginning in 2028. The Company also has$56.5 million of U.S. state net operating loss carryforwards that will expire beginning in 2044. The Company also has$17.8 million of foreign net operating loss carryforwards that do not expire.

The Company also has federal and state research and development (“R&D”) and other tax credit carryforwards of$2.5 million and$2.6 million, respectively, as of December 31, 2025. The federal credit carryforwards began expiring in 2025 and state research credit carryforwards do not expire.

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows (in thousands):

20252024
Unrecognized tax benefits—January 1$1,489$1,381
Gross increases to current year tax positions48108
Unrecognized tax benefits—December 31$1,537$1,489

At December 31, 2025, and 2024, the balance of gross unrecognized tax benefits was$1.5 million and$1.5 million, respectively. For each of the years ended December 31, 2025, and 2024, the balance of gross unrecognized tax benefits increased$0.1 million and$0.1 million, respectively. None of the Company’s unrecognized tax benefits would, if recognized, reduce the Company’s effective tax rate since the tax benefits would increase a deferred tax asset that is currently offset by a full valuation allowance. The Company does not anticipate a significant change to the total amount of unrecognized tax benefits within the next twelve months.

The Company files income tax returns in the U.S. federal, California and other various state and international jurisdictions. Tax regulations within each jurisdiction are subject to the interpretation of the related tax laws and regulations and require significant judgment to apply. Carryover attributes beginning in 2008 remain open to adjustment by the U.S. and state authorities. There are no tax examinations in any material tax jurisdictions.

The Company recognizes any interest and/or penalties related to income tax matters as a component of income tax expense. As of December 31, 2025, there wereno accrued interest and penalties related to uncertain tax positions.

Patent Sale

On December 16, 2025 (the “Initial Closing date”), the Company entered into a patent purchase agreement with Tigo Energy Innovations LLC (the “Purchaser”), an unaffiliated third party, pursuant to which the Company sold certain patents (the “Assigned Patents”). Under the terms of the patent purchase agreement, total consideration could amount between$15.0 million and$18.0 million. In connection with the transaction, the Company received a non-exclusive grant-back license to practice the Assigned Patents in connection with the Seller’s products.

The consideration consisted of$15.0 million which was paid upon the Initial Closing date of the patent purchase agreement. An additional holdback amount between$2.8 million and$3.0 million is payable after the initial closing, which is contingent on the Company satisfying certain conditions. If these conditions are not met, the Purchaser is not entitled to the patents subject to these conditions and the Company will not receive any amount related to the holdback consideration noted above. As of December 31, 2025, the conditions were not met for the Company to receive any portion of the holdback amount.

The Company accounted for the sale of the Assigned Patents as sale of non-financial assets under ASC Topic 610-20, “Other Income — Gains and Losses from the Derecognition of Nonfinancial Assets”(“ASC Topic 610-20”). The patents transferred under the patent purchase agreement were not recognized as separate intangible assets as the Company retains perpetual, royalty-free, non-exclusive rights to continue using the underlying technology. As result, no intangible assets were derecognized, and the Company’s Developed Technology and Patent intangible assets will continue to be amortized over their originally established useful lives. At the Initial Closing, the Company recognized a gain of$14.6 million, which is the consideration paid at the Initial Closing date, net of transaction costs. In accordance with ASC Topic 610-20, the gain is presented within other (income) expenses, net, on the Company’sconsolidated statements of operations and comprehensive loss for the year ended December 31, 2025.

Additionally, seller-retained royalties under the purchase patent agreement, which entitle the Company to receive up to$5.0 million of future license proceeds, represent contingent income and will be recognized in other (income) expenses, net when and if earned. As of December 31, 2025, the Company hasnot collected any seller-retained royalties.

Subsequent Events

The Company evaluated subsequent events and transactions that occurred after the balance sheet date up to the date that the consolidated financial statements were issued. Based upon this review, the Company did not identify any subsequent events that would have required adjustment or disclosure in the consolidated financial statements.

On February 24, 2026, we entered into a Securities Purchase Agreement with certain institutional investors, pursuant to which we issued and sold, in a registered direct offering (the “Offering”), an aggregate of 5,000,000 shares of the Company’s common stock, par value $0.0001 per share, at a purchase price of$3.00 per share (the “Shares”), for gross proceeds from the Offering of$15.0 million, before deducting placement agent fees and offering expenses. The closing of the Offering occurred on February 26, 2026.

The Shares were offered by us pursuant to our effective shelf registration statement on Form S-3 (File No. 333-282013) that was filed with the SEC on September 9, 2024, and declared effective on September 17, 2024. A prospectus supplement and accompanying base prospectus describing the terms of the Offering has been filed with the SEC.

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