The preparation of 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 revenue and expenses during the reporting period. Significant estimates relied upon in preparing these unaudited condensed consolidated financial statements include, but are not limited to, revenue recognition, expected future cash flows used to evaluate the recoverability of long-lived assets, contingent liabilities, expensing and capitalization of research and development costs for internal-use software, the average period of benefit associated with costs capitalized to obtain revenue contracts, the determination of the fair value of stock-based awards issued, stock-based compensation expense, the determination of the estimated fair value of the convertible notes held by the Company, the valuations of the intangible assets acquired through acquisitions, the estimation of the Company’s incremental borrowing rate, and the recoverability of the Company’s net deferred tax assets and related valuation allowance.

Although the Company regularly assesses these estimates, actual results could differ materially from these estimates. Changes in estimates are recorded in the period in which they become known. The Company bases its estimates on historical experience and various other assumptions that it believes to be reasonable under the circumstances. Actual results may differ from management’s estimates if these results differ from historical experience, or other assumptions do not turn out to be substantially accurate, even if such assumptions are reasonable when made.

The Company considers events or transactions that occur after the balance sheet date but prior to the issuance of the unaudited condensed consolidated financial statements to provide additional evidence for certain estimates or to identify matters that require additional disclosure. Subsequent events have been evaluated as required. The Company has evaluated all subsequent events and determined that there are no material recognized or unrecognized subsequent events requiring disclosure, other than those disclosed in this Quarterly Report on Form 10-Q.

The Company is an "emerging growth company" (“EGC”), as defined in the Jumpstart Our Business Startups Act (the “JOBS Act”), and may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not "emerging growth companies." The Company may take advantage of these exemptions until the Company is no longer an "emerging growth company." Section 107 of the JOBS Act provides that an "emerging growth company" can take advantage of the extended transition period afforded by the JOBS Act for the implementation of new or

revised accounting standards. The Company has elected to use the extended transition period for complying with new or revised accounting standards and, as a result of this election, its condensed consolidated financial statements may not be comparable to companies that comply with public company effective dates. The Company may take advantage of these exemptions up until the last day of the year following the fifth anniversary of an offering or such earlier time that it is no longer an emerging growth company. The Company would cease to be an emerging growth company if it has more than $1.07 billion in annual revenue, has more than $700.0 million in market value of its stock held by non-affiliates, or it issues more than $1.0 billion of non-convertible debt securities over a three-year period.

The Company primarily derives revenue from subscription revenues via the Semrush online visibility management platform and the Prowly public relations platform, which are comprised of subscription fees from customers accessing the Company’s SaaS services and related customer support. For the three months ended March 31, 2023 and 2022, subscription revenue accounted for nearly all of the Company’s revenue. Revenue related to other revenue was not material for the three months ended March 31, 2023 and 2022.

The Company offers subscriptions to its platform primarily on a monthly or annual basis. The Company sells its products and services primarily through a self-service model and also directly through its sales force. The Company’s subscription arrangements provide customers the right to access the Company’s hosted software applications. Customers do not have the right to take possession of the Company’s software during the hosting arrangement. Subscriptions are generally non-cancellable during the contractual subscription term; however, subscription contracts contain a right to a refund if requested within seven days of purchase.

The Company recognizes revenue in accordance with ASC 606, Revenue from Contracts with Customers (“ASC 606”). Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration it expects to receive in exchange for those products or services. There were no changes to the Company’s revenue recognition policies since the filing of its Annual Report on Form 10-K with the SEC on March 15, 2023.

Amounts that have been invoiced are recorded in accounts receivable and in deferred revenue or revenue, depending on whether the revenue recognition criteria have been met. The Company primarily invoices and collects payments from customers for its services in advance on a monthly or annual basis.

Deferred revenue represents amounts billed for which revenue has not yet been recognized. Deferred revenue that will be recognized during the succeeding 12-month period is recorded as current deferred revenue, and the remaining portion is recorded as long-term deferred revenue. Deferred revenue increased by $7,017 as of March 31, 2023 compared to December 31, 2022. During the three months ended March 31, 2023 and 2022, $25,513 and $20,696 of revenue was recognized that was included in deferred revenue at the beginning of each respective period.

For contracts with an original expected duration greater than one year, the aggregate amount of the transaction price allocated to the performance obligations that were unsatisfied as of March 31, 2023 was $1,773, of which the Company expects to recognize $1,535 over the next 12 months.

For contracts with an original expected duration of one year or less, the Company has applied the practical expedient available under ASC 606 to not disclose the amount of transaction price allocated to unsatisfied performance obligations as of March 31, 2023. For performance obligations not satisfied as of March 31, 2023, and to which this expedient applies, the nature of the performance obligations is consistent with performance obligations satisfied as of December 31, 2022. The remaining durations are less than one year.

The incremental direct costs of obtaining a contract, which primarily consist of sales commissions paid for new subscription contracts, are deferred and recorded as deferred contract costs in the unaudited condensed consolidated balance sheets and are amortized over a period of approximately 24 months on a systematic basis, consistent with the pattern of transfer of the goods or services to which the asset relates. The 24-month period represents the estimated benefit period of the customer relationship and has been determined by taking into consideration the type of product sold, the commitment term of the customer contract, the nature of the Company’s technology development life-cycle, and an estimated customer relationship period based on historical experience and future expectations. Deferred contract costs that will be recorded as expense during the succeeding 12-month period are recorded as current deferred contract costs, and the remaining portion is recorded as deferred contract costs, net of current portion. Amortization of deferred contract costs is included in sales and marketing expense in the accompanying unaudited condensed consolidated statements of operations and comprehensive loss.

The Company has no off-balance sheet risk, such as foreign exchange contracts, option contracts, or other hedging arrangements. Credit losses historically have not been significant and the Company generally has not experienced any material losses related to receivables from individual customers, or groups of customers. Due to these factors, no additional credit risk beyond amounts provided for collection losses is believed by management to be probable in the Company's accounts receivable.

Credit risk with respect to accounts receivable is dispersed due to the large number of customers of the Company. The Company routinely assesses the creditworthiness of its customers and generally does not require its customers to provide collateral or other security to support accounts receivable. Credit losses historically have not been significant and the Company generally has not experienced any material losses related to receivables from individual customers, or groups of customers. Due to these factors, no additional credit risk beyond amounts provided for collection losses is believed by management to be probable in the Company's accounts receivable.

As of March 31, 2023 and December 31, 2022, no individual customer represented more than 10% of the Company’s accounts receivable. During the three months ended March 31, 2023 and 2022, no individual customer represented more than 10% of the Company’s revenue.

The following table is a reconciliation of cash, cash equivalents, and restricted cash included in the accompanying unaudited condensed consolidated balance sheets that sum to the total cash, cash equivalents, and restricted cash included in the accompanying unaudited condensed consolidated statements of cash flows for the three months ended March 31, 2023 and 2022.

The Company’s financial instruments include cash, cash equivalents, investments, accounts receivable, accounts payable, and accrued expenses. The Company’s investments are classified as available-for-sale and reported at fair value in accordance with the market approach utilizing quoted prices that were directly or indirectly observable. The carrying amount of the remainder of the Company’s financial instruments approximated their fair values as of March 31, 2023 and December 31, 2022, due to the short-term nature of these instruments.

The Company has evaluated the estimated fair value of financial instruments using available market information. The use of different market assumptions and/or estimation methodologies could have a significant effect on the estimated fair value amounts. See below for further discussion.

Beginning on January 1, 2022, as a result of changes in the economic facts and circumstances of its business environment, the Company reassessed its functional currency determinations for all foreign subsidiaries and determined that the functional currencies of the Company’s foreign subsidiaries is the local currency at each of its subsidiary locations, with the exception of its former Russian subsidiaries where the U.S. dollar remained the functional currency in 2022. Accordingly, beginning January 1, 2022, assets and liabilities of the Company’s foreign subsidiaries that maintain local currencies as functional currencies are translated into U.S. dollars using period-end exchange rates, and revenues and expenses are translated into U.S. dollars using average exchange rates in effect during each period. The Company includes the effects of these foreign currency translation adjustments in accumulated other comprehensive loss, a separate component of stockholders’ equity.

Comprehensive loss is comprised of two components: net loss and other comprehensive loss, which includes other changes in stockholders’ equity that result from transactions and economic events other than those with stockholders. For the three months ended March 31, 2023, comprehensive loss consists of net loss, the change in the cumulative foreign currency translation adjustment, and unrealized loss on

On January 1, 2023, the Company adopted ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. ASU 2016-13 changes the impairment model for most financial assets and certain other instruments. Entities will be required to use an expected loss model that will result in the earlier recognition of allowances for losses for trade and other receivables, held-to-maturity debt securities, loans, and other instruments. For available-for-sale debt securities with unrealized losses, the losses will be recognized as allowances rather than as reductions in the amortized cost of the securities. The Company adopted the standard utilizing the modified retrospective approach. The adoption of the standard did not have a material impact on the Company’s unaudited condensed consolidated financial statements.