STEM INC

1. BUSINESS

Description of the Business

Stem, Inc. (“Stem,” the “Company,” “we,” “us,” or “our”) is a global leader in artificial intelligence (“AI”)-driven clean energy solutions and services. We maintain one of the world’s largest digitally connected, intelligent, renewable energy networks, providing customers with (i) energy storage hardware, sourced from leading, global battery original equipment manufacturers (“OEMs”), that we deliver through our partners, including developers, distributors and engineering, procurement and construction (“EPC”) firms, (ii) edge hardware to aid in the collection of site data and the real-time operation and control of the site plus other optional equipment, and (iii) an ongoing software platform, Athena®, and services to operate and manage the performance of standalone energy storage, integrated solar plus storage systems, and solar assets. In addition, in all of the markets where we help manage our customers’ clean energy assets, we have agreements to use the Athena platform to participate in such markets and to share the revenue from such market participation.

We deliver our battery hardware and software-enabled services to customers through our Athena platform. The Company’s hardware and recurring software-enabled services mitigate customer energy costs through services such as time-of-use and demand charge management optimization and by aggregating the dispatch of energy through a network of virtual power plants. The network created by the Company’s growing customer base increases grid resilience and reliability through the real-time processing of market-based demand signals, energy prices, and other factors in connection with the deployment of renewable energy resources to such customers. Additionally, the Company’s clean energy solutions are designed to support renewable energy generation by helping to alleviate grid intermittency issues, thereby reducing customer dependence on traditional, fossil fuel resources.

The Company’s Athena PowerTrack application provides a vertically integrated solution that incorporates on-site power monitoring equipment that aggregates and communicates data to enable remote control of solar generation assets. PowerTrack provides direct access to individual site performance to measure and benchmark expected energy production, maximizing asset value for the Company’s customers.

From time to time, the Company, through an indirect wholly-owned development subsidiary (“DevCo”) will enter into strategic joint ventures (each a “DevCo JV”) with qualified third parties for the development of select renewable energy projects (“DevCo Projects”). In this structure, DevCo forms a new DevCo JV entity as the majority owner, with the developer as the minority owner. The purpose of the DevCo JV is to develop and sell DevCo Projects and secure Company hardware and software services for those projects. In DevCo Projects, the Company makes development capital contributions to fund project development, and recovers those capital contributions plus a fee when the developer takes ownership of the project. This business model is intended to allow the Company to advance development capital to key partners in strategic markets and secure hardware upfront, in order to generate higher-margin software and services and other revenue via exclusive long-term services contracts under the DevCo Projects.

The Company operated as Rollins Road Acquisition Company (f/k/a Stem, Inc.) (“Legacy Stem”) prior to the Merger with Star Peak Transition Corp. (“STPK”), an entity that was then listed on the New York Stock Exchange under the trade symbol “STPK,” and STPK Merger Sub Corp., a Delaware corporation and wholly-owned subsidiary of STPK (“Merger Sub”), providing for, among other things, and subject to the conditions therein, the combination of the Company and STPK pursuant to the merger of Merger Sub with and into the Company, with the Company continuing as the surviving entity (the “Merger”). Stem, Inc. was incorporated on March 16, 2009 in the State of Delaware and is headquartered in San Francisco, California.

Liquidity

As of March 31, 2024, we had cash and cash equivalents of $112.8 million, an accumulated deficit of $844.8 million, net accounts receivable of $239.9 million, and working capital, which we define as current assets less current liabilities, of $168.9 million. During the three months ended March 31, 2024, we incurred a net loss of $72.3 million and had negative cash flows from operating activities of $0.6 million. As of March 31, 2024, our principal sources of liquidity were cash and cash equivalents totaling $112.8 million, which were held for working capital purposes and for investment growth opportunities. As of March 31, 2024, we believe that our cash position, as well as expected collections from accounts receivable, is sufficient to meet capital and liquidity requirements for at least the next 12 months from the date of this Quarterly Report on Form 10-Q.

Our business prospects are subject to risks, expenses, and uncertainties frequently encountered by companies in the early stages of commercial operations. The attainment of profitable operations is dependent upon future events, including securing new customers and maintaining current ones, securing and maintaining adequate supplier relationships, building our customer base, successfully executing our business and marketing strategy, obtaining adequate financing to complete our development activities, and hiring and retaining appropriate personnel. Failure to generate sufficient revenues, achieve planned gross margins and operating profitability, control operating costs, or secure additional funding may require us to modify, delay or abandon some of our planned future expansion or development, or to otherwise enact operating cost reductions available to management, which could have a material adverse effect on our business, operating results and financial condition.

Supply Chain Constraints and Risk

We have in the past faced shortages and shipping delays affecting the supply of inverters, enclosures, battery modules and associated component parts for inverters and battery energy storage systems available for purchase. These shortages and delays were due in part to the evolving macroeconomic, geopolitical and business environment, including the effects of global inflationary pressures and interest rates, general economic slowdown or a recession, changes in monetary policy, instability in financial institutions, potential import tariffs, geopolitical pressures, including the armed conflicts between Russia and Ukraine and in the Gaza Strip and nearby areas, as well as tensions between China and the United States and unknown effects of current and future trade regulations. We cannot predict the full effects the macroeconomic, geopolitical and business environment will have on our business, cash flows, liquidity, financial condition and results of operations.

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim reporting and with the instructions to Form 10-Q and Article 10 of Regulation S-X, assuming the Company will continue as a going concern. Accordingly, the consolidated balance sheet at December 31, 2023 has been derived from the audited financial statements at that date, but certain notes or other information that are normally required by GAAP have been omitted if they substantially duplicate the disclosures contained in the Company’s annual audited consolidated financial statements. In the opinion of the Company’s management, all normal and recurring adjustments considered necessary for a fair statement of the results for the interim period presented have been included in the accompanying unaudited condensed consolidated financial statements. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s audited financial statements for the year ended December 31, 2023. Operating results for the three months ended March 31, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024 or for any other future interim period or year.

Principles of Consolidation

The unaudited condensed consolidated financial statements include the accounts of the Company, its wholly-owned subsidiaries, and consolidated variable interest entities (“VIEs”). The Company presents non-controlling interests within the equity section of its condensed consolidated balance sheets, and the amount of consolidated net loss that is attributable to the Company and the non-controlling interest in its condensed consolidated statements of operations. All intercompany balances and transactions have been eliminated in consolidation.

Variable Interest Entities

The Company forms special purpose entities (“SPEs”), some of which are VIEs, with its investors in the ordinary course of business to facilitate the funding and monetization of its energy storage systems. A legal entity is considered a VIE if it has either a total equity investment that is insufficient to finance its operations without additional subordinated financial support or whose equity holders lack the characteristics of a controlling financial interest. The Company’s variable interests arise from contractual, ownership, or other monetary interests in the entity. The typical condition for a controlling financial interest ownership is holding a majority of the voting interests of an entity; however, a controlling financial interest may also exist in entities, such as VIEs, through arrangements that do not involve controlling voting interests.

The Company consolidates a VIE if it is deemed to be the primary beneficiary. The Company determines it is the primary beneficiary if it has the power to direct the activities that most significantly impact the VIEs’ economic performance and has the obligation to absorb losses or has the right to receive benefits of the VIE that could potentially be significant to the VIE. The Company evaluates its relationships with its VIEs on an ongoing basis to determine whether it is the primary beneficiary.

Beginning in January 2022, the Company formed DevCo JVs with the purpose of originating potential battery storage facility projects in specific locations and conducting early-stage planning and development activities. The Company determined that the DevCo JVs are VIEs, as they lack sufficient equity to finance their activities without additional financial support. The Company determined that it has both (1) the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance, and (2) the obligation to absorb losses or receive benefits from the VIE that could potentially be significant. Accordingly, the Company has determined that it is the primary beneficiary of the DevCo JVs, and as a result, the DevCo JVs’ operating results, assets and liabilities are consolidated by the Company, with third party minority owners’ share presented as noncontrolling interest. The Company applied the hypothetical liquidation at book value method in allocating recorded net income (loss) to each owner based on the change in the reporting period, of the amount of net assets of the entity to which each owner would be entitled to under the governing contracts in a liquidation scenario.

The following table summarizes the carrying values of the assets and liabilities of the DevCo JVs that are consolidated by the Company as of March 31, 2024 and December 31, 2023 (in thousands):

The Company didnot make any material capital investment contributions during the three months ended March 31, 2024. For the three months ended March 31, 2023, the Company contributed approximately $0.1 million in capital investments for hardware purchases. The net income from the DevCo JVs wasimmaterial during both the three months ended March 31, 2024 and March 31, 2023.

Use of Estimates

The preparation of unaudited condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the unaudited condensed consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various other assumptions believed to be reasonable. Actual results could differ from those estimates and such differences could be material to the financial position and results of operations.

Significant estimates and assumptions reflected in these unaudited condensed consolidated financial statements include, but are not limited to, depreciable life of energy storage systems; estimates of transaction price with variable consideration; the amortization of acquired intangibles; the amortization of financing obligations; deferred commissions and contract fulfillment costs; the valuation of energy storage systems, finite-lived intangible assets, internally developed software, and asset retirement obligations; and the fair value of equity instruments, equity-based instruments, derivative liability, accruals related to sales tax liabilities and the fair value of assets acquired and liabilities assumed in a business combination.

Segment Information

Operating segments are defined as components of an entity for which discrete financial information is available that is regularly reviewed by the Chief Operating Decision Maker (“CODM”) in deciding how to allocate resources to an individual segment and in assessing performance. The Company’s Chief Executive Officer is the CODM. The CODM reviews financial information presented on a consolidated basis for purposes of making operating decisions, allocating resources, and evaluating financial performance. As such, management has determined that the Company operates asone operating segment that is focused exclusively on innovative technology services that transform the way energy is distributed and consumed. Net assets outside of the U.S. were less than 10% of total net assets as of March 31, 2024 and December 31, 2023.

Concentration of Credit Risk and Other Uncertainties

Financial instruments that potentially subject the Company to concentration of credit risk consist of cash and cash equivalents and accounts receivable. The Company’s cash balances are primarily invested in money market funds or on deposit at high credit quality financial institutions in the U.S. The Company’s cash and cash equivalents are held at financial institutions where account balances may at times exceed federally insured limits. Management believes the Company is not exposed to significant credit risk due to the financial strength of the depository institution in which the cash is held. The Company has no financial instruments with off-balance sheet risk of loss.

At times, the Company may be subject to a concentration of credit risk in relation to certain customers due to the purchase of large energy storage systems made by such customers. The Company routinely assesses the creditworthiness of its customers. The Company has not experienced material losses related to receivables from individual customers, or groups of customers during the three months ended March 31, 2024 and 2023. The Company does not require collateral. Due to these factors, no additional credit risk beyond amounts provided for credit losses is believed by management to be probable in the Company’s accounts receivable.

Significant Customers

A significant customer represents 10% or more of the Company’s total revenue or accounts receivable, net balance at each reporting date. For each significant customer, revenue as a percentage of total revenue and accounts receivable as a percentage of total accounts receivable are as follows:

*Total less than 10% for the period.

There are inherent risks whenever a large percentage of total revenue is concentrated in a limited number of customers. Should a significant customer terminate or fail to renew its contracts with us, in whole or in part, for any reason, or experience significant financial or operating difficulties, it could have a material adverse effect on our financial condition and results of operations. In general, a customer that makes up a significant portion of revenues in one period, may not make up a significant portion in subsequent periods.

Fair Value of Financial Instruments

Assets and liabilities recorded at fair value in the unaudited condensed consolidated financial statements are categorized based upon the level of judgment associated with the inputs used to measure their fair value. The fair value of the Company’s financial assets and liabilities reflects management’s estimate of amounts that the Company would have received in connection with the sale of the assets or paid in connection with the transfer of the liabilities in an orderly transaction between market participants at the measurement date. In connection with measuring the fair value of its assets and liabilities, the Company seeks to maximize the use of observable inputs (market data obtained from independent sources) and to minimize the use of unobservable inputs (internal assumptions about how market participants would price assets and liabilities).

Hierarchical levels which are directly related to the amount of subjectivity associated with the inputs to the valuation of these assets or liabilities are as follows:

Level 1 —Unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access as of the measurement date.

Level 2 —Inputs other than quoted prices included within Level 1 that are directly observable for the asset or liability or indirectly observable through corroboration with observable market data.

Level 3 —Unobservable inputs for the asset or liability only used when there is little, if any, market activity for the asset or liability at the measurement date.

This hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value. Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to their fair value measurement. The Company’s assessment of the significance of a specific input to the fair value measurement in its entirety requires management to make judgments and consider factors specific to the asset or liability.

Financial assets and liabilities held by the Company measured at fair value on a recurring basis as of March 31, 2024 and December 31, 2023 include cash and cash equivalents, short-term investments, derivative liability, and convertible notes.

3. REVENUE

Disaggregation of Revenue

The following table provides information on the disaggregation of revenue as recorded in the condensed consolidated statements of operations (in thousands):

The following table summarizes reportable revenue by geographic regions determined based on the location of the customers (in thousands):

Remaining Performance Obligations

Remaining performance obligations represent contracted revenue that has not been recognized, which include contract liabilities (deferred revenue) and amounts that will be billed and recognized as revenue in future periods. As of March 31, 2024 and March 31, 2023, the Company had $440.6 million and $541.1 million of remaining performance obligations, respectively, and the approximate percentages expected to be recognized as revenue in the future are as follows (in thousands, except percentages):

Contract Balances

Deferred revenue primarily includes cash received in advance of revenue recognition related to energy optimization services and incentives. The following table presents the changes in the deferred revenue balance during the three months ended March 31, 2024 and March 31, 2023 (in thousands):

Parent Company Guarantees

Prior to July 2023, the Company agreed in certain customer contracts to provide a guarantee that the value of purchased hardware will not decline for a certain period of time. Under this guarantee, if these customers were unable to install or designate the hardware to a specified project within such period of time, the Company would be required to assist the customer in re-marketing the hardware for resale by the customer. If a resale does not occur, the hardware will be appraised utilizing a third party. The guarantee provided that, in such cases, if the customer resold the hardware for less than the amount initially sold to the customer or the appraisal value is less than the hardware purchase price, the Company would be required to compensate the customer for any shortfall in fair value for the hardware from the initial contract price. The Company accounts for such contractual terms and guarantees as variable consideration at each measurement date. The Company updates its estimate of variable consideration each quarter, including changes in estimates related to such guarantees, for facts or circumstances that have changed from the time of the initial estimate. As a result, the Company recorded a net revenue reduction of $33.1 million in hardware revenue during the three months ended March 31, 2024. The overall reduction in revenue was related to deliveries that occurred prior to the current fiscal year. The remaining net book value of the billed and unbilled receivable as of March 31, 2024 is $108.1 million which could be subject to further adjustments under the guarantee.

4. SHORT-TERM INVESTMENTS

The Company didnot have short-term investments as of March 31, 2024. The following tables summarize the estimated fair value of the Company’s short-term investments and the gross unrealized holding gains and losses as of December 31, 2023 (in thousands).

The Company periodically reviews the individual securities that have unrealized losses on a regular basis to evaluate whether or not any security has experienced, or is expected to experience, credit losses resulting in the decline in fair value. The Company evaluates, among other factors, whether the Company intends to sell any of these short-term investments and whether it is more likely than not that the Company will be required to sell any of them before recovery of the amortized cost basis. During the three months ended March 31, 2024, the Company didnot record an allowance for credit losses.

5. FAIR VALUE MEASUREMENTS

Fair value accounting is applied for all financial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis. On March 31, 2024 and December 31, 2023, the carrying amount of accounts receivable, other current assets, accounts payable, and accrued and other current liabilities approximated their estimated fair value due to their relatively short maturities.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table provides the financial instruments measured at fair value (in thousands):

The Company’s money market funds are classified as Level 1 because they are valued using quoted market prices. The Company’s short-term investments consist of available-for-sale securities and are classified as Level 2 because their value is based on valuations using significant inputs derived from or corroborated by observable market data. The Company’s other current liabilities includes a derivative liability that is attributable to a derivative feature within a revenue contract, whereby final settlement is indexed to the price per ton of lithium carbonate. The balance was valued using a third party forecast for lithium carbonate. As the derivative instrument is not traded on an exchange they are classified within Level 3 of the fair value hierarchy.

Fair Value of Convertible Promissory Notes

The convertible notes are recorded at face value less unamortized debt issuance costs (see Note 8—Convertible Notes for additional details) on the condensed consolidated balance sheets as of March 31, 2024. As of March 31, 2024 and December 31, 2023, the estimated fair value of the 2028 Convertible Notes was$144.1 million and $149.1 million, respectively, based on Level 2 quoted bid prices of the convertible notes in an over-the-counter market on the last trading date of the reporting period. As of March 31, 2024 and December 31, 2023, the estimated fair value of the 2030 Convertible Notes was$125.7 million and $175.8 million, respectively, based on Level 2 quoted bid prices of the convertible notes in an over-the-counter market on the last trading date of the reporting period.

6. GOODWILL AND INTANGIBLE ASSETS, NET

Goodwill

Goodwill consists of the following (in thousands):

Intangible Assets, Net

Intangible assets, net, consists of the following (in thousands):

Amortization expense for intangible assets was $6.6 million and$6.5 million for the three months ended March 31, 2024 and 2023, respectively.

7. ENERGY STORAGE SYSTEMS, NET

Energy Storage Systems, Net

Energy storage systems, net, consists of the following (in thousands):

Depreciation expense for energy storage systems was approximately $3.0 million and $3.6 million for the three months ended March 31, 2024 and 2023, respectively. Depreciation expense is recognized in cost of services and other revenue.

Impairment expense for energy storage systems was approximately $0.9 million for the three months ended March 31, 2023. The Company didnot recognize impairment expense for the three months ended March 31, 2024. Impairment expense is recognized in cost of services and other revenue.

8. CONVERTIBLE NOTES

2028 Convertible Notes and 2028 Capped Call Options

2028 Convertible Notes

On November 22, 2021, the Company issued$460.0 million aggregate principal amount of its 2028 Convertible Notes in a private placement offering to qualified institutional buyers (the “2021 Initial Purchasers”) pursuant to Rule 144A under the Securities Act of 1933, as amended.

The 2028 Convertible Notes are senior, unsecured obligations of the Company and bear interest at a rate of 0.5% per year, payable in cash semi-annually in arrears in June and December of each year, beginning in June 2022. The 2028 Convertible Notes will mature on December 1, 2028, unless earlier repurchased, redeemed or converted in accordance with their terms prior to such date. Upon conversion, the Company may choose to pay or deliver, as the case may be, cash, shares of common stock or a combination of cash and shares of common stock. The 2028 Convertible Notes are redeemable for cash at the Company’s option at any time given certain conditions (as discussed below), at an initial conversion rate of 34.1965 shares of common stock per $1,000 principal amount of 2028 Convertible Notes, which is equivalent to an initial conversion price of approximately $29.24 (the “2028 Conversion Price”) per share of the Company’s common stock. The conversion rate is subject to customary adjustments for certain events as described in the related indenture.

The Company may redeem for cash all or any portion of the 2028 Convertible Notes, at the Company’s option, on or after December 5, 2025 if the last reported sale price of the Company’s common stock has been at least 130% of the 2028 Conversion Price then in effect for at least 20 trading days at a redemption price equal to 100% of the principal amount of the 2028 Convertible Notes to be redeemed, plus accrued and unpaid interest.

The Company’s net proceeds from this offering were approximately$445.7 million, after deducting the 2021 Initial Purchasers’ discounts and debt issuance costs. To minimize the effect of potential dilution to the Company’s common stockholders upon conversion of the 2028 Convertible Notes, the Company entered into separate capped call transactions (the “2028 Capped Calls”) as described below. In connection with the issuance of the 2030 Convertible Notes during the second quarter of 2023, the Company used approximately $99.8 million of the net proceeds to purchase and surrender for cancellation approximately $163.0 million aggregate principal amount of the Company’s 2028 Convertible Notes, which resulted in a $59.4 million gain on debt extinguishment. See 2030 Convertible Notes below for further details of the 2030 Convertible Notes.

Upon adoption of ASU 2020-06, the Company allocated all of the debt discount to long-term debt. The debt discount is amortized to interest expense using the effective interest method, computed to be 0.9%, over the life of the 2028 Convertible Notes or approximately itsseven-year term. The outstanding 2028 Convertible Notes balances as of March 31, 2024 and December 31, 2023 are summarized in the following table (in thousands):

The following table presents total interest expense recognized related to the 2028 Convertible Notes during the three months ended March 31, 2024 and 2023 (in thousands):

2028 Capped Call Options

On November 17, 2021, in connection with the pricing of the 2028 Convertible Notes, and on November 19, 2021, in connection with the exercise in full by the 2021 Initial Purchasers of their option to purchase additional Notes, the Company entered into the 2028 Capped Calls with certain counterparties. The Company used $66.7 million of the net proceeds to pay the cost of the 2028 Capped Calls.

The 2028 Capped Calls have an initial strike price of $29.2428 per share, which corresponds to the initial conversion price of the 2028 Convertible Notes and is subject to anti-dilution adjustments. The 2028 Capped Calls have a cap price of $49.6575 per share, subject to certain adjustments.

The 2028 Capped Calls are considered separate transactions entered into by and between the Company and the 2028 Capped Calls counterparties, and are not part of the terms of the 2028 Convertible Notes. The Company recorded a reduction to additional paid-in capital of $66.7 million during the year ended December 31, 2021 related to the premium payments for the 2028 Capped Calls. These instruments meet the conditions outlined in Financial Accounting Standards Board (“FASB”) ASU 2022-01 Topic 815, Derivatives and Hedging (“ASC 815”) to be classified in stockholders’ equity and are not subsequently remeasured as long as the conditions for equity classification continue to be met.

2030 Convertible Notes and 2030 Capped Call Options

2030 Convertible Notes

On April 3, 2023, the Company issued $240.0 million aggregate principal amount of its 2030 Convertible Notes in a private placement offering to qualified institutional buyers (the “2023 Initial Purchasers”) pursuant to Rule 144A under the Securities Act of 1933, as amended.

The 2030 Convertible Notes are senior, unsecured obligations of the Company and bear interest at a rate of 4.25% per year, payable in cash semi-annually in arrears in April and October of each year, beginning on October 1, 2023. The 2030 Convertible Notes will mature on April 1, 2030, unless earlier repurchased, redeemed or converted in accordance with their terms prior to such date. Upon conversion, the Company may choose to pay or deliver cash, shares of common stock or a combination of cash and shares of common stock. The 2030 Convertible Notes are redeemable for cash at the Company’s option at any time given certain conditions (as discussed below), at an initial conversion rate of 140.3066 shares of common stock per $1,000 principal amount of the 2030 Convertible Notes, which is equivalent to an initial conversion price of approximately $7.1272 (the “2030 Conversion Price”) per share of the Company’s common stock. The conversion rate is subject to customary adjustments for certain events as described in the related indenture.

The 2030 Convertible Notes will be redeemable, in whole or in part, at the Company’s option, on or after April 5, 2027 if the last reported sale price of the Company’s common stock has been at least 130% of the 2030 Conversion Price then in effect for at least 20 trading days at a redemption price equal to 100% of the principal amount of the 2030 Convertible Notes to be redeemed, plus accrued and unpaid interest.

The Company’s net proceeds from this offering were approximately $232.4 million, net of $7.6 million in debt issuance costs primarily consisting of underwriters, advisory, legal, and accounting fees. The Company used approximately $99.8 million of the net proceeds to purchase and surrender for cancellation approximately $163.0 million aggregate principal amount of the Company’s 2028 Convertible Notes. See 2028 Convertible Notes above for further details on the impacts of the debt extinguishment.

The outstanding 2030 Convertible Notes balances as of March 31, 2024 and December 31, 2023 are summarized in the following table (in thousands):

The debt discount and debt issuance costs are amortized to interest expense using the effective interest method, computed to be 4.70%, over the life of the 2030 Convertible Notes or its approximately seven-year term.

The following table presents total interest expense recognized related to the 2030 Convertible Notes during the three months ended March 31, 2024(in thousands):

2030 Capped Call Options

On March 29, 2023 and March 31, 2023, in connection with the pricing of the 2030 Convertible Notes, and on April 3, 2023, in connection with the exercise in full by the 2023 Initial Purchasers of their option to purchase additional 2030 Convertible Notes, the Company entered into Capped Calls (the “2030 Capped Calls”) with certain counterparties. The Company used $27.8 million of the net proceeds from the 2030 Convertible Notes to pay the cost of the 2030 Capped Calls.

The 2030 Capped Calls have an initial strike price of $7.1272 per share, which corresponds to the initial conversion price of the 2030 Convertible Notes and is subject to anti-dilution adjustments. The 2030 Capped Calls have a cap price of $11.1800 per share, subject to certain adjustments.

The 2030 Capped Calls are considered separate transactions entered into by and between the Company and the 2030 Capped Calls counterparties, and are not part of the terms of the 2030 Convertible Notes. The Company recorded a reduction to additional paid-in capital of $27.8 million during the second quarter of 2023 related to the premium payments for the 2030 Capped Calls. These instruments meet the conditions outlined in ASC 815 to be classified in stockholders’ equity and are not subsequently remeasured as long as the conditions for equity classification continue to be met.

9. STOCK-BASED COMPENSATION

Equity Incentive Plans

Under both the Stem, Inc. 2009 Equity Incentive Plan (the “2009 Plan”) and the Stem, Inc. 2021 Equity Incentive Plan (the “2021 Plan,” and together with the 2009 Plan, the “Plans”), the Company may grant stock options, stock appreciation rights, restricted stock, restricted stock units (“RSUs”), performance stock units (“PSUs”), and other awards that are settled in shares of the Company’s common stock. The Company does not intend to grant new awards under the 2009 Plan. All shares that remain available for future grants are under the 2021 Plan.

Stock Options

The following table summarizes the stock option activity for the period ended March 31, 2024:

As of March 31, 2024, the Company had approximately $14.2 million of remaining unrecognized stock-based compensation expense for stock options, which is expected to be recognized over a weighted average period of 1.4 years.

Restricted Stock Units

The following table summarizes the RSU activity for the period ended March 31, 2024:

(1) Includes certain restricted stock units with service and market-based vesting criteria.

As of March 31, 2024, the Company had approximately $60.4 million of remaining unrecognized stock-based compensation expense for RSUs, which is expected to be recognized over a weighted average period of 1.8 years.

Stock-Based Compensation Expense

The following table summarizes stock-based compensation expense recorded in each component of operating expenses in the Company’s condensed consolidated statements of operations and comprehensive loss (in thousands):

Stock-based compensation expense associated with research and development of $1.0 million and $0.9 million were capitalized as internal-use software during thethree months ended March 31, 2024 and 2023, respectively.

10. NET LOSS PER SHARE

The following table sets forth the computation of basic and diluted net loss per share attributable to common stockholders (in thousands, except share and per share amounts):

The following table shows total outstanding potentially dilutive shares excluded from the computation of diluted net loss per share attributable to common stockholders as their effect would have been anti-dilutive, as of March 31, 2024 and 2023:

11. INCOME TAXES

The following table reflects the Company’s (provision for) benefit from income taxes and the effective tax rates for the periods presented below (in thousands, except effective tax rate):

For the three months ended March 31, 2024, the Company recognized a provision for income taxesof $0.2 million, representing an effective tax rate of (0.2)%, which was lower than the statutory federal tax rate because the Company maintains a valuation allowance on its U.S. deferred tax assets. For thethree months ended March 31, 2023, the Company recognized a benefit from income taxes of $0.1 million, representing an effective tax rate of 0.2%, which was lower than the statutory federal tax ratedue to a $0.3 million tax benefit from an acquisition for a partial valuation allowance release on U.S. deferred tax assets due to the deferred tax liability established in purchase accounting on acquired intangibles during the three months ended March 31, 2023.

12. COMMITMENTS AND CONTINGENCIES

Contingencies

The Company is party to various legal proceedings from time to time. A liability is accrued when a loss is both probable and can be reasonably estimated. Management believes that the probability of a material loss with respect to any currently pending legal proceeding is remote. However, litigation is inherently uncertain and it is not possible to definitively predict the ultimate disposition of any of these proceedings. As of the date of this filing, the Company does not believe that there are any pending legal proceedings or other loss contingencies that will, either individually or in the aggregate, have a material adverse effect on the Company taken as a whole.

Non-cancelable Purchase Obligations

During the three months ended March 31, 2024, there have been no material changes to our non-cancelable purchase obligations from those disclosed in Note 20. “Commitments and Contingencies” in the notes to consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on February 29, 2024.

Non-Income Related Taxes

The Company is finalizing its sales tax liability analysis for states in which it may be determined to have economic nexus. During the third quarter of 2023, the Company determined it was probable that the Company would be subject to sales tax liabilities plus applicable interest in certain states and estimated the probable tax liability to be $5.6 million, and accordingly, the Company accrued this amount as of March 31, 2024.