SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Dec. 31, 2025

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation and Principles of Consolidation

The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). Any reference in these Notes to applicable guidance refers to U.S. GAAP as found in U.S. Accounting Standards Codification (“ASC”) and Accounting Standards Update (“ASU”) of the Financial Accounting Standards Board (“FASB”).

The consolidated financial statements reflect the Company’s accounts and operations and those of its subsidiaries. All significant intercompany accounts and transactions have been eliminated.

Going Concern

In accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2014-15, Presentation of Financial Statements – Going Concern, the Company’s management evaluated whether there are conditions or events that pose risk associated with the Company’s ability to continue as a going concern within one year after the date these financial statements have been issued. The Company’s consolidated financial statements have been prepared assuming that it will continue as a going concern. The Company has historically incurred operating losses and negative cash flows from operations. These losses were primarily a result of challenging bitcoin mining economics starting in 2022 when energy prices increased and the prices of bitcoin went through a period of significant decline. The economics of bitcoin mining have since fluctuated due to a variety of factors including periodic recoveries in the price of bitcoin and a reduction in energy prices, increases in mining difficulty as a result of increases in global hashrate from the introduction of new and more efficient miners, as well as by the halving which occurred on April 19, 2024 and reduced the rewards distributed to miners.

The Company’s projected operating cash flows are not sufficient to meet the existing debt obligations, specifically the remaining $36.7 million aggregate principal amount of the Company’s 8.50% Senior Notes due in October 2026 (the “Senior Notes”), which mature on October 31, 2026 (see Note 5, “Debt”). The potential inability to meet this debt service obligation raises substantial doubt as to the Company’s ability to continue as a going business. As a result, the Company continues to explore a number of potential strategic alternatives with respect to the Company’s corporate or capital structure.

Management has taken certain actions since 2022 to improve the Company’s liquidity, including, among other things, the sale of assets, the proceeds of which were used to extinguish $80.3 million of long-term debt, and significant restructuring activities to materially reduce selling, general and administrative expenses. In addition to these actions taken in prior years, the Company completed the following transactions in 2025 to continue to improve its liquidity position:

•On December 11, 2025, the Company completed the sale of the 152 acres of property the Company owned in Spartanburg, South Carolina (the “South Carolina Land”) and an assignment of the Company’s rights to 60 MW of electrical service (the “Initial Load”), which is expected to be made available to the South Carolina Land by

September 2026, to an affiliate of The Lightstone Group and Lighthouse Datacenters for $18.0 million in cash paid at closing and the right to receive up to $18.0 million in additional future contingent payments. Any future contingent payments are payable at $180,000 per MW of power capacity made available to the South Carolina Land before December 31, 2030, to the extent such capacity exceeds the Initial Load. The Company recognized a gain on the sale of $10.5 million and has not recognized any consideration related to the additional future contingent payments as they are not realizable as of December 31, 2025.

•On August 1, 2025, the Company entered into an Asset Purchase Agreement (the “APA”) and certain ancillary agreements to sell certain assets comprising the Company’s plant in Columbus, Mississippi (the “Mississippi Facility”), other than the adjoining 5.6-acre tract of land with over 73,000 square feet of industrial warehouse space, for $4.2 million in cash, which closed on September 16, 2025 (see Note 4, “Property and Equipment").

•During 2025 and 2024, the Company entered into privately negotiated exchange agreements, pursuant to which it issued an aggregate of 1,934,889 shares of the Company’s Class A common stock and paid an aggregate of $2.9 million in cash in exchange for $14.5 million in aggregate principal amount of the Senior Notes.

•During 2025, the Company completed a series of public tender/exchange offers, pursuant to which the Company repurchased $15.0 million in aggregate principal amount of the Senior Notes for a total of $5.7 million in cash and exchanged an additional $5.0 million in aggregate principal amount of the Senior Notes for $2.3 million in aggregate principal amount of 10.00% Senior Notes due 2030 (the “New Notes”).

•During 2025, the Company paid $0.7 million in cash to repurchase an aggregate of $1.1 million principal amount of its Senior Notes in open market transactions. The Company recognized a gain on extinguishment of debt of $0.4 million as a result of such open market repurchases.

Following the conclusion of the privately negotiated exchanges, the public tender/exchange offers and open market debt repurchases, we had $36.7 million in aggregate principal amount of the Senior Notes outstanding, along with $3.1 million of capitalized contractual interest payments, and $2.3 million in aggregate principal amount of the New Notes outstanding, along with $1.0 million of capitalized contractual interest payments. The Senior Notes mature on October 31, 2026, at which time all outstanding principal, together with any accrued and unpaid interest thereon, will become due. The New Notes mature on June 30, 2030, at which time all outstanding principal, together with any accrued and unpaid interest thereon, will become due. See Note 5, “Debt” for additional information.

On March 11, 2026, the Company commenced an exchange offer (as subsequently modified, supplemented or amended, the “Exchange Offer”), pursuant to which it is offering to exchange up to $36.7 million in aggregate principal amount of its Senior Notes for New Notes. Under the Exchange Offer, holders may exchange $25.00 principal amount of Senior Notes for $25.00 principal amount of New Notes, together with two shares of our Class A common stock, for each $25.00 principal amount of Senior Notes exchanged. See Note 17, "Subsequent Events" for additional information.

In addition to the Exchange Offer, the Company is considering various alternatives to address its obligations under the Senior Notes, including:

•The retirement or repurchase of its outstanding debt through cash purchases and/or exchanges for equity or other debt securities, which may be conducted in open-market purchases, privately negotiated transactions or other transactions. Such repurchases or exchanges, if any, will be on terms and at prices determined by the Company, and will depend on prevailing market conditions, its liquidity requirements, contractual restrictions and other factors. The amounts involved may be material and, to the extent equity is used, may be dilutive to existing stockholders.

•Issuances of new debt and/or equity to refinance, repay or otherwise satisfy the existing Senior Notes.

The Company’s cash flow projections indicate that it will have sufficient liquidity to meet its cash requirements through the third quarter of 2026 but will not be sufficient to satisfy the debt payments due in October 2026. The Company’s operating cash flows are highly dependent on bitcoin mining economics commonly measured by hashprice. Increases in the price of bitcoin benefit the Company by increasing the amount of revenue earned for each bitcoin earned, while increases in the difficulty to mine a bitcoin adversely affect the Company by decreasing the number of bitcoin earned. In addition, increases in the costs of electricity, natural gas, and emissions credits adversely affect the Company by increasing operating costs. Depending on the Company’s assumptions regarding the bitcoin hashprice and energy price inputs, the estimates of the amounts of required liquidity vary significantly. There can be no assurance that the Company’s assumptions used to estimate liquidity requirements and future cash burn rates will be correct, and the ability to be predictive is uncertain due to the limited ability to predict future bitcoin and energy prices. Additionally, the Company’s ability to achieve projected cash flows depends on the Company’s ability to obtain and comply with required permits and licenses, including the Title V Air Permit for the New York Facility. While this permit is subject to the Stipulation, it may still face legal challenges from third-party environmental groups (see Note 10, “Commitments and

Contingencies”), which may have an adverse impact on the Company’s operations and its ability to meet cash flow forecasts.

Given the uncertainty regarding the Company’s financial condition over the next 12 months from the date these financial statements were issued, the Company has concluded that there is substantial doubt about its ability to continue as a going concern for a reasonable period of time. The consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.

Use of estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting periods.

Actual results could differ from those estimates. Significant estimates made by management include, but are not limited to, estimates of the recoverability and useful lives of long-lived assets, stock-based compensation, current and deferred income tax assets and liabilities, and environmental liabilities.

Significant Accounting Policies

Segment Reporting

Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker (“CODM”) in deciding how to allocate resources and in assessing performance. Greenidge operates as one operating and reporting segment. The Company’s datacenter operations are located in the United States, and the Company views these operations as one operating segment as the CODM reviews financial information on a consolidated basis in making decisions regarding resource allocations and assessing performance. The primary measure of segment profit or loss is net income (loss) reported on the consolidated statement of operations and comprehensive income (loss). The measure of segment assets is reported on the consolidated balance sheets as total assets.

The Company generates revenue primarily by (1) earning bitcoin, with miners that are owned by the Company, as rewards and transaction fees for supporting the global bitcoin network, (2) providing hosting, power and technical support services to third-party owned bitcoin mining equipment, and (3) selling capacity, energy, and ancillary services to the wholesale power grid managed by the NYISO. The Cryptocurrency Mining, Datacenter Hosting and Power Generation operations sell surplus electricity generated by the Company’s power plant, and not consumed in cryptocurrency mining and datacenter hosting operations, to the NYISO power grid at prices set on a daily basis through the NYISO wholesale market. In addition, the Company receives revenues from the sale of its capacity and ancillary services in the NYISO wholesale market.

Cash and Cash Equivalent

All liquid instruments with an original maturity, at the date of purchase, of 90 days or less are classified as cash equivalents. Cash equivalents consist primarily of money market funds, certificates of deposit, commercial paper, corporate notes and bonds, and U.S. government agency securities. The Company’s interest income on cash and cash equivalents is included in Interest expense, net in the Consolidated Statements of Operations and Comprehensive Income (Loss).

Digital Assets

Digital assets are comprised of bitcoin earned as noncash consideration in exchange for providing hash computations for a mining pool, which are accounted for in connection with the Company’s revenue recognition policy previously disclosed. Digital assets are included in current assets in the consolidated balance sheets due to the Company’s ability to sell it in a highly liquid marketplace and because the Company reasonably expects to liquidate its digital assets to support operations within the next 12 months.

The Company adopted ASU 2023-08 during the second quarter of 2024 with an effective date of January 1, 2024. As a result of adopting ASU 2023-08, the Company measures digital assets at fair value as of each reporting period based on

UTC closing prices at period-end on the active trading platform that the Company normally transacts and has determined is its principal market for bitcoin.

Gains and losses resulting from remeasurements are included within (Gain) loss on digital assets in the consolidated statements of operations and comprehensive income (loss). Gains and losses resulting from the sale of bitcoin, measured as the difference between the cash proceeds and the carrying basis of bitcoin as determined on a first-in-first-out basis, are also included within (Gain) loss on digital assets in the consolidated statements of operations and comprehensive income (loss).

Digital assets received by the Company as noncash consideration are included as an adjustment to reconcile net income (loss) to cash used in operating activities on the consolidated statements of cash flows. In August 2024, the Company announced its new bitcoin self-mining retention strategy, which enables the Company to accumulate bitcoin from its owned miners. Proceeds from the sale of bitcoin that occur nearly immediately after receipt are included within operating activities on the consolidated statements of cash flows. To the extent the Company holds bitcoin for more than a few days, proceeds from the sale of bitcoin are included within investing activities on the consolidated statements of cash flows.

Accounts Receivable

The Company provides credit in the normal course of business to its power customer, the NYISO, and hosting customer, NYDIG. The NYISO makes payments, depending on the type of revenue, within seven days of usage or seven days of month end. The NYDIG Hosting Agreement requires advance payment for estimated hosting services. The balance based on actual results is due upon receipt. There are currently no accounts receivable associated with cryptocurrency mining revenues. We have not experienced any historic credit losses with our power or hosting customers and therefore, we determined that no allowance for doubtful accounts is required for the years ended December 31, 2025 and 2024.

Emissions Expense and Credits

The Company participates in the Regional Greenhouse Gas Initiative (“RGGI”), which requires, by law, that the Company remit credits to offset 50% of the Company’s annual emission expense in the following year, for each of the years in the three-year control period (January 1, 2024 to December 31, 2026). Credits for the remaining 50% of the Company’s annual emission expense for the first and second years of the three-year control period, as well as 100% of the third year’s emission expense, are required to be remitted in the year following the conclusion of the three-year control period. In March 2025, the Company surrendered the emissions allowance required for the first year of the current control period. The Company recognizes expense on a per ton basis, where one ton is equal to one RGGI credit.

The RGGI credits are recorded on a first in, first out (“FIFO”) basis. The Company incurred emissions expense of $10.6 million and $8.7 million for the years ended December 31, 2025 and 2024, respectively, which was allocated between cost of revenue - cryptocurrency mining, cost of revenue - datacenter hosting and cost of revenue - power and capacity, based on the relative percentage of MWh consumed for each, in the accompanying Consolidated Statements of Operations and Comprehensive Income (Loss).

Property and Equipment, net

Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is calculated using the straight-line method over the estimated useful lives of the Company’s depreciable assets, as noted in the table below. Construction in process is comprised of assets which have not been placed into service and is not depreciated until the related assets are complete and ready for their intended use, at which time the cost is transferred to the appropriate property and equipment class. Land and miner deposits are not depreciated. Repairs and maintenance costs are expensed as incurred. See Note 4, “Property and Equipment, Net” for additional information.


Asset Class			Estimated Useful Lives
Plant infrastructure			10 years
Miners			3 years
Miner facility infrastructure			10 years

Equipment			5 years

Valuation of Long-Lived Assets

The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be fully recoverable. To determine recoverability of a long-lived asset, management evaluates whether the estimated future undiscounted net cash flows, based on prevailing market conditions, from the asset are less than its carrying amount. If impairment is indicated, the long-lived asset is written down to fair value. The Company recognized a noncash impairment charge of nil and $0.2 million for the years ended December 31, 2025 and 2024, respectively. See Note 4, “Property and Equipment, Net” for additional information.

Held for Sale Classification

The Company classifies long-lived assets as held for sale in the period in which management commits to a plan to sell the long-lived assets. To classify, the long-lived assets must be available for immediate sale in its present condition, an active program to complete the plan to sell the long-lived assets must be initiated, the sale of the long-lived assets within one year must be probable and the long-lived assets must be marketed at a reasonable price in relation to their fair value. Upon being classified as held for sale, the long-lived assets are tested for impairment. An impairment loss is recognized when the carrying amount of the asset exceeds its fair value less cost to sell. The long-lived assets are not depreciated while classified as held for sale.

Investments in Equity Securities

The Company owns common shares in a private company. The Company does not have control and does not have the ability to exercise significant influence over operating and financial policies of this entity. The investment does not have a readily determinable fair value and thus the investment is measured at cost less impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments. Investments in equity securities are a component of Other long-term assets and gains (losses) on equity securities are recorded in Other income (expense) on the Consolidated Statements of Operations and Comprehensive Income (Loss). The Company recognized a noncash impairment charge of $0.9 million during the year ended December 31, 2024. See Note 6, “Stockholders’ Deficit” for additional information.

Derivative Financial Instruments

The Company held an equity warrant asset in a private company that gave it the right to acquire common stock in the private company. The equity warrant asset contains net settlement terms, and, thus, the Company recorded it as a derivative. The equity warrant asset entitled the Company to purchase a specific number of shares of common stock at a specific price within a specific time period, in this case 1 year. The equity warrant asset contains an automatic exercise provision if the Company does not exercise prior to expiration, or provide notice of its intent not to exercise. Upon automatic exercise, the Company will receive a share count equal to the intrinsic value of the warrant divided by the share price. The equity warrant asset is recorded at fair value and is classified as a derivative asset, a component of prepaid expenses and other current assets. The asset was held for prospective investment gains and is not used to hedge any economic risks.

Any changes in fair value from the grant date fair value of the equity warrant asset classified as a derivative is recognized as an increase or decrease to Prepaid expenses and other current assets on the Consolidated Balance Sheets and as net gains or losses on derivative instruments, in Other income (expense) on the Consolidated Statements of Operations and Comprehensive Income (Loss). The Company recognized a loss on the change in fair value of $0.5 million change in fair value of the equity warrant asset during the year ended December 31, 2024. There was no change in fair value of the equity warrant asset during the year ended December 31, 2025 as the warrant was automatically exercised upon expiration. See Note 6, “Stockholders’ Deficit” for additional information.

Leases

The Company accounts for leases in accordance with ASC 842. The Company determines if an arrangement is or contains a lease at contract inception. The Company recognizes a right-of-use (“ROU”) asset and a lease liability at the lease commencement date. The lease liability is initially measured at the present value of the unpaid lease payments at the lease commencement date and is subsequently measured at amortized cost using the effective interest method. As most

of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments.

The Company leases property for its corporate office and land used in cryptocurrency mining operations. Leases are categorized into two asset classes: corporate real estate and land - cryptocurrency mining. For the corporate real estate asset class, the Company has elected to combine lease and non-lease components. The Company excluded short-term leases having initial terms of 12 months or less as an accounting policy election and recognizes rent expense on a straight-line basis over the lease term.

Lease payments included in the measurement of the lease liability comprise fixed payments. Variable lease payment amounts, such as increases in lease payments based on changes in index rates or usage, are not included in the measurement of the ROU asset or lease liability. These are expensed as incurred and recorded as variable lease expense. See Note 10, “Commitments and Contingencies” for additional information.

Environmental Liability

Environmental liabilities are recognized in accordance with ASC 410-30, Asset Retirement and Environmental Obligations when the costs are probable and estimable. As of December 31, 2025, we have recognized environmental liabilities for a coal ash pond and landfill which were inherited due to the legacy coal operations at the Company’s property in Torrey, New York. The Company determines the estimate by developing key assumptions to determine the expected cost of remediation. Estimates are based on various assumptions that are sensitive to changes including, but not limited to, closure and post-closure cost estimates, timing of expenditures, escalation factors, and requirements of granted permits.

Revenue Recognition

The Company recognizes revenue in accordance with ASC 606, Revenue from Contracts with Customers. The core principle of the revenue standard is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The following five steps are applied to achieve that core principle:

•Step 1: Identify the contract, or contracts, with the customer;

•Step 2: Identify the performance obligations in the contract;

•Step 3: Determine the transaction price;

•Step 4: Allocate the transaction price to the performance obligations in the contract; and

•Step 5: Recognize revenue when, or as, the Company satisfies a performance obligation.

In order to identify the performance obligations in a contract with a customer, the Company must assess the promised goods or services in the contract and identify each promised good or service that is distinct. A performance obligation meets ASC 606’s definition of a “distinct” good or service (or bundle of goods or services) if both of the following criteria are met: The customer can benefit from the good or service either on its own or together with other resources that are readily available to the customer (i.e., the good or service is capable of being distinct), and the entity’s promise to transfer the good or service to the customer is separately identifiable from other promises in the contract (i.e., the promise to transfer the good or service is distinct within the context of the contract).

If a good or service is not distinct, the good or service is combined with other promised goods or services until a bundle of goods or services is identified that is distinct.

The transaction price is the amount of consideration to which an entity expects to be entitled in exchange for transferring promised goods or services to a customer. The consideration promised in a contract with a customer may include fixed amounts, variable amounts, or both. When determining the transaction price, an entity must consider the effects of all of the following:

•Variable consideration;

•Constraining estimates of variable consideration;

•The existence of a significant financing component in the contract;

•Noncash consideration; and

•Consideration payable to a customer.

Variable consideration is included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. The transaction price is allocated to each performance obligation on a relative standalone selling price basis. The transaction price allocated to each performance obligation is recognized when that performance obligation is satisfied, at a point in time or over time as appropriate.

The Company recognizes amounts prepaid by customers in excess of recognizable revenue as contract liabilities on the Consolidated Balance Sheets.

Cryptocurrency Mining Revenue

Greenidge has entered into digital asset mining pools by executing contracts with the mining pool operators to perform hash computations for mining pools. The contracts are terminable at any time at no cost by either party and Greenidge’s enforceable right to compensation begins only when, and lasts as long as, Greenidge performs hash computations for the mining pool operators. In exchange for performing hash computations, Greenidge is entitled to a fractional share of the cryptocurrency award the mining pool operators theoretically receives less the mining pool fees. The agreements entered into with the pool operators pay out based on a Full-Pay-Per-Share (“FPPS”) payout formula, which is a conceptual formula that entitles Greenidge to consideration upon the provision of hash computations to the pool even if a block is not successfully placed by the pool operator. Revenue is measured as the value of the consideration received in the form of cryptocurrency from the pool operator, less the mining pool fees retained by the mining pool operator. Greenidge does not expect any material future changes in mining pool fee rates.

In exchange for performing hash computations for the mining pools, the Company is entitled to a fractional share of the cryptocurrency award the mining pool operator theoretically receives (less pool operator fees to the mining pool operator which are netted as a reduction of the transaction price). Greenidge’s fractional share is based on the proportion of hash computations the Company performed for the mining pool operator to the total hash computations contributed by all miners in solving the current algorithm during the 24-hour period. Daily earnings calculated under the FPPS payout formula are calculated from midnight-to-midnight UTC time and are credited to pool members’ accounts at 1:00:00 A.M. UTC. The pool sends Greenidge’s cryptocurrency balance in the account to a digital wallet designated by the Company between 9:00 A.M. and 5:00 P.M. UTC time each day, which Greenidge automatically sells for cash within minutes of receipt, unless Greenidge decides to retain its newly earned bitcoin in connection with its bitcoin retention strategy.

The service of performing hash computations for the mining pool operators is an output of Greenidge’s ordinary activities and is the only performance obligation in Greenidge’s contracts with mining pool operators. The cryptocurrency that Greenidge receives as transaction consideration is noncash consideration, which Greenidge measures at fair value on the contract inception date at 0:00:00 UTC on the start date of the contract. The duration of each contract is 24 hours or less and provides the same rate of payment upon renewal. Since the pricing remains the same upon contract renewal, the contract does not provide the applicable mining pool operator with a material right that represents a separate performance obligation. The fair value is based on Greenidge’s primary exchange of the related cryptocurrency which is considered to be Coinbase. The consideration Greenidge earns is variable since it is based on the amount of hash computations provided by both Greenidge and the bitcoin network as a whole. The Company does not constrain this variable consideration because it is probable that a significant reversal in the amount of revenue recognized from the

contract will not occur when the uncertainty is subsequently resolved and recognizes the non-cash consideration on the same day that control is transferred, which is the same day as contract inception.

Power and Capacity Revenue

Greenidge recognizes power revenue at a point in time when the electricity is delivered to the NYISO and its performance obligation is met. Greenidge recognizes revenue on capacity agreements over the life of the contract as its series of performance obligations are met as capacity to provide power is maintained.

Sales tax, value-added tax, and other taxes Greenidge collects concurrent with revenue-producing activities are excluded from revenue. Incidental contract costs that are not material in the context of the delivery of goods and services are recognized as expense. There is no significant financing component in these transactions.

Datacenter Hosting Revenue

The Company generates revenue from contracts with customers from providing hosting services to a single third-party customer. Hosting revenue is recognized as services are performed on a variable basis. The Company recognizes variable hosting revenue each month as the uncertainty related to the consideration is resolved, hosting services are provided to its customer, and its customer utilizes the hosting service (the customer simultaneously receives and consumes the benefits of the Company’s performance). The Company’s performance obligation related to these services is satisfied over time. The Company recognizes revenue for services that are performed on a consumption basis (the amount of electricity utilized by the customer) as well as through a fixed fee that is earned monthly and a profit-sharing component based on the net proceeds earned by the customer in the month from bitcoin mining activities. The Company bills its customer at the beginning of each month based on the anticipated consumption under the contract. Invoices are collected in the month of invoicing under the terms of the contract. The Company recognizes revenue based on actual consumption in the period.

Cryptocurrency Mining Cost of Revenue

Cost of revenue—cryptocurrency datacenter consists primarily of natural gas, emissions, hosting fees paid to third party hosting sites, payroll and benefits and other direct production costs associated with the megawatts generated for the digital mining operation.

Datacenter Hosting Cost of Revenue

Cost of revenue—datacenter hosting consists primarily of natural gas, emissions, payroll and benefits and other direct production costs associated with the megawatts generated for the datacenter hosting operation.

Power and Capacity Cost of Revenue

Cost of revenue—power and capacity consists primarily of natural gas, emissions, payroll and benefits and other direct production costs associated with the megawatts generated for the power produced by Greenidge and sold to the grid.

Selling, General and Administrative Expenses

Selling, general and administrative expenses consist primarily of administrative payroll and benefits, business development costs, professional fees, and insurance.

Stock-Based Compensation

The Company accounts for share-based payment awards exchanged for services at the estimated grant date fair value of the award. Stock options issued under the Company’s equity incentive plans are granted with an exercise price equal to no less than the market price of the Company’s stock at the date of grant and expire up to ten years from the date of the grants. These options generally vest on the grant date or over a three-year period. The Company has elected to account for forfeitures of employee awards as they occur. Restricted stock units (“RSUs”) issued under the Company’s equity incentive plans are granted to employees and directors and vest over their requisite service period.

The Company estimates the fair value of the stock option grants using the Black-Scholes-Merton option pricing model and the assumptions used in calculating the fair value of stock-based awards represent management’s best estimates and involve inherent uncertainties and the application of management’s judgment. The fair value of RSUs is measured on the grant date based on the closing fair market value of the Company’s common stock. Stock-based compensation is recognized on a straight-line basis over the requisite service period, net of actual forfeitures in the period.

Expected Term – The expected term of options represents the period that the Company’s stock-based awards are expected to be outstanding on the simplified method, which is the half-life from vesting to the end of its contractual term.

Expected Volatility – The Company estimates expected volatility using a blended volatility including historical volatility of the Company’s common stock and historical volatility of a peer group of publicly traded companies.

Risk-Free Interest Rate– The Company bases the risk-free interest rate on the implied yield available on U.S. Treasury zero-coupon issues with an equivalent remaining term.

Expected Dividend – The Company has never declared or paid any cash dividends on its common shares and does not plan to pay cash dividends in the foreseeable future, and, therefore, uses an expected dividend yield of zero in its valuation models.

Income Taxes

The Company accounts for income taxes in accordance with FASB ASC Topic 740, Income Taxes. Deferred income tax assets and liabilities are determined based on the differences between financial statement carrying amounts and the tax basis of existing assets and liabilities. These differences are measured at the enacted tax rates that will be in effect when these differences reverse. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.

A valuation allowance is required to be recognized if it is “more likely than not” that the deferred tax asset will not be realized. The determination of the realizability of the deferred tax assets is highly subjective and dependent upon judgment concerning management’s evaluation of both positive and negative evidence, the forecasts of future income, applicable tax planning strategies, and assessments of the current and future economic and business conditions.

The Company recognizes and measures tax positions taken or expected to be taken in its tax return based on their technical merit and assesses the likelihood that the positions will be sustained upon examination based on the facts, circumstances and information available at the end of each period. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as part of the provision for income taxes.

Income (Loss) Per Share

Basic net income (loss) per common share attributable to common shareholders is calculated by dividing net income (loss) attributable to common shareholders by the weighted average number of common shares outstanding for the period. Diluted net income (loss) per common share attributable to common shareholders is calculated by dividing net income (loss) attributable to common shareholders by the diluted weighted average number of common shares outstanding for the period. The Company used the weighted average method in determining earnings per share.

Fair Value Measurements

The Company determines fair value 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. Inputs used in the valuation techniques to derive fair values are classified based on a three-level hierarchy. The basis for fair value measurements for each level within the hierarchy is described below, with Level 1 having the highest priority and Level 3 having the lowest. The three levels of the fair value hierarchy are as follows:

•Level 1 – inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities.

•Level 2 – inputs are quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in non-active markets; and model-derived valuations whose inputs are observable or whose significant valuation drivers are observable.

•Level 3 – inputs to valuation models are unobservable and/or reflect the Company’s market assumptions.

The fair value hierarchy is based on maximizing the use of observable inputs and minimizing the use of unobservable inputs when measuring fair value. Classification within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The Company transfers the fair value of an asset or liability between levels of the fair value hierarchy at the end of the reporting period during which a significant change in the inputs used to determine the fair value has occurred.

Recent Accounting Pronouncements Not Yet Adopted

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. ASU 2024-03 requires additional disclosures of certain costs and expenses specified in the updated guidance, to provide enhanced transparency into aggregate amounts presented on the Consolidated Statements of Operations and Comprehensive Income (Loss). In January 2025, the FASB issued ASU 2025-01, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40), which clarifies the effective date of ASU 2024-03. This guidance becomes effective for annual periods beginning after December 15, 2026, and interim periods within annual periods beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating this guidance to determine the impact on its disclosures.

In November 2024, the FASB issued ASU 2024-04, Debt—Debt with Conversion and Other Options (Subtopic 470-20): Induced Conversions of Convertible Debt Instruments. ASU 2024-04 clarifies the requirements for determining whether certain settlements of convertible debt instruments should be accounted as an induced conversion. This guidance becomes effective for annual reporting periods beginning after December 15, 2025, and interim periods within those annual reporting periods. Early adoption is permitted. The Company expects this guidance will have no impact to its Consolidated Financial Statements.

In September 2025, the FASB issued ASU 2025-06, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. The amendments in this update remove references to software development stages and require entities to start capitalizing software costs when management has authorized and committed to funding the software project and it is probable that the project will be completed and the software will be used to perform the function intended. The update permits entities to apply the guidance on a prospective transition approach, modified transition approach or retrospective transition approach. The update is effective for all entities for annual periods beginning December 15, 2027, and for interim periods within those annual periods. Early adoption is permitted as of the beginning of an annual reporting period. The Company expects this guidance will have no impact to its consolidated financial statements.

In September 2025, the FASB issued ASU 2025-07, Derivatives and Hedging (Topic 815) and Revenue from Contracts with Customers (Topic 606): Derivatives Scope Refinements and Scope Clarification for Share-Based Noncash Consideration from a Customer in a Revenue Contract. The amendments in this guidance narrow the scope to exclude certain contracts from derivative accounting in Topic 815 and clarify the accounting for share-based noncash consideration from a customer in Topic 606. The amendments in this update are effective for all entities for annual periods beginning after December 15, 2026, and interim periods within those annual periods. Early adoption is permitted. The Company expects this guidance will have no impact to its consolidated financial statements.

In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topic 270): Narrow-Scope Improvements. ASU 2025-11 clarifies interim disclosure requirements and the applicability of Topic 270. The ASU is effective for fiscal years beginning after December 15, 2027, and interim periods within annual reporting periods beginning after December 15, 2028. Early adoption is permitted. Either prospective or retrospective application to any or all periods presented is permitted when applying the amendments upon adoption. The Company is currently evaluating this guidance to determine the impact on its consolidated financial statements.

Recent Accounting Pronouncements Adopted

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosure. ASU 2023-09 mostly requires, on an annual basis, disclosure of specific categories in an entity’s effective tax rate reconciliation and income taxes paid disaggregated by jurisdiction. The incremental disclosures may be presented on a prospective or retrospective basis. The ASU is effective for fiscal years beginning after December 15, 2024 with early adoption permitted. The Company adopted ASU 2023-09 effective as of January 1, 2025 on a prospective basis, and has included the new tax disclosure requirements. See Note 9, "Income Taxes" for additional information.

In March 2025, the FASB issued ASU No. 2025-02, Liabilities (Subtopic 405): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 122, which amends the Accounting Standards Codification to remove the text of SEC Staff Bulletin (“SAB”) 121: Accounting for Obligations to Safeguard Crypto-Assets an Entity Holds for its Platform Users as it has been rescinded by the issuance of SAB 122. ASU 2025-02 is effective immediately and has not had an impact on the Company’s financial statements.

In May 2025, the FASB issued ASU No. 2025-03, Business Combinations (Topic 805) and Consolidation (Topic 810): Determining the Accounting Acquirer in the Acquisition of a Variable Interest Entity, which provides updated guidance on identifying the accounting acquirer in an acquisition transaction effected primarily by exchanging equity interests when the legal acquiree is a variable interest entity that meets the definition of a business. The updates in this ASU are effective for all entities for annual reporting periods beginning after December 15, 2026, and interim periods within those annual periods. The updates require entities to apply the new guidance prospectively to any acquisition transaction that occurs after the initial application date. Early adoption is permitted as of the beginning of an interim or annual reporting period. The Company elected to early adopt the guidance in this update effective April 1, 2025. The adoption of ASU 2025-03 did not have an effect on the Company’s financial statements.

In May 2025, the FASB issued ASU No. 2025-04, Compensation—Stock Compensation (Topic 718) and Revenue from Contracts with Customers (Topic 606): Clarifications to Share-Based Consideration Payable to a Customer. The updates in this ASU include revising the definition of the term “performance condition” for share-based compensation payable to customers, elimination of the policy election permitting a grantor to account for forfeitures as they occur, clarification that share-based consideration encompasses the same instruments as share-based payment arrangements but the grantee does not need to be the supplier of goods or services to the grantor, and clarification that a grantor is required to assess the probability that an award will vest using only the guidance in Topic 718. The updates in this ASU are effective for all entities for annual reporting periods beginning after December 15, 2026, and interim periods with those annual periods. Early adoption is permitted. Either modified retrospective or a retrospective basis is permitted when applying the updated guidance upon adoption. The Company elected to early adopt the guidance in this update on a modified retrospective basis effective April 1, 2025. The adoption of ASU 2025-04 did not have an effect on the Company’s financial statements.

In July 2025, the FASB issued ASU 2025-05, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets. The amendments in this ASU provide all entities with a practical expedient allowing entities to assume that current conditions as of the balance sheet date do not change for the remaining life of the asset when estimating expected credit losses. Entities, other than a public business entity, that elect the practical expedient are permitted to make an accounting policy election to consider collection activity after the balance sheet date when estimating expected credit losses. This guidance becomes effective for annual periods beginning after December 15, 2025, and interim periods within those annual reporting periods. Early adoption is permitted in both interim and annual reporting periods in which financial statements have not yet been issued or made available for issuances. Application of the amendments are to be made prospectively. The Company elected to early adopt the guidance in this update effective July 1, 2025. The adoption of ASU 2025-05 did not have an effect on the Company’s financial statements.

Greenidge Generation Holdings Inc. 10-K