1stdibs.com, Inc.

1. Basis of Presentation and Summary of Significant Accounting Policies

Description of the Business

1stdibs.com, Inc. (“1stDibs” or the “Company”) is one of the world’s leading online marketplaces for connecting design lovers with many of the best sellers and makers of vintage & antique furniture, contemporary furniture, home décor, jewelry, watches, art, and fashion. The Company’s sellers, who undergo an evaluation by its in-house experts to vet the quality of their inventory, in-depth marketing content, and custom-built technology platform create trust in the Company’s brand and facilitate high-consideration purchases of luxury design items online. By disrupting the way these items are bought and sold, 1stDibs is both expanding access to, and growing the market for, luxury design items.

The Company was incorporated in the state of Delaware on March 10, 2000 and is headquartered in New York, NY.

Basis of Presentation

The accompanying condensed consolidated financial statements are prepared in accordance with the accounting principles generally accepted in the United States of America (“GAAP”) and include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K (the “Form 10-K”) for the year ended December 31, 2025, filed with the Securities and Exchange Commission (“SEC”) on February 27, 2026.

The consolidated balance sheet as of December 31, 2025, included herein, was derived from the audited financial statements as of that date, but does not include all disclosures including certain notes required by GAAP on an annual reporting basis.

In the opinion of the Company, the accompanying condensed consolidated financial statements contain all adjustments, consisting of only normal recurring adjustments, necessary for a fair presentation of its financial position and its results of operations, changes in stockholders’ equity, and cash flows for the interim periods. The results for the three months ended March 31, 2026 are not necessarily indicative of the results to be expected for any subsequent quarter or for the year ending December 31, 2026.

There have been no material changes to the Company's significant accounting policies as described in the Form 10-K.

Restructuring Expenses

During the three months ended March 31, 2026, the Company incurred $0.5 million of Restructuring expenses consisting of employee severance, taxes, and benefits costs relating to a reorganization intended to improve operational and cost efficiency. There wereno Restructuring expenses recorded in the three months ended March 31, 2025.

The following table displays a rollforward of the charges and payments to the accrued balance as of March 31, 2026:

The majority of the remaining $0.5 million of severance accrued as of March 31, 2026 is anticipated to be paid during the year ending December 31, 2026, while approximately $0.1 million is expected to be paid during the year ending December 31, 2027.

The employee severance and benefits costs are included within the respective financial statement line items on the condensed consolidated statement of operations as shown in the table below for the three months ended March 31, 2026:

Use of Estimates

The preparation of the 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 liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting period. Estimates and assumptions reflected in these condensed consolidated financial statements include, but are not limited to, revenue recognition, provision for transaction losses, allowance for doubtful accounts, impairment assessment of goodwill, the determination of useful lives, income taxes, and the valuation of leases. The Company evaluates its estimates and assumptions on an ongoing basis. Actual results could differ from those estimates and such differences may be material to the condensed consolidated financial statements.

Segment Information

An operating segment is defined as a component of a business for which separate financial information is available that is evaluated regularly by the chief operating decision maker (“CODM”). The Company operates and manages its business asone reportable and operating segment. The Company’s chief executive officer, who is the chief operating decision maker, reviews financial information on a consolidated basis for purposes of evaluating financial performance and allocating resources. The Company’s single reportable and operating segment containsone reporting unit, which consists of the Company’s online marketplace that enables commerce between buyers and sellers. The CODM regularly reviews the GAAP consolidated statement of operations from a significant expense perspective when evaluating financial performance and allocating resources. While the CODM also reviews other funnel metrics regularly (i.e. Gross Merchandise Value (“GMV”), Number of Orders, etc.), there are no additional significant segment expenses other than those disclosed in the condensed consolidated statements of operations.

Cash, Cash Equivalents, and Restricted Cash

The following represents the Company’s cash, cash equivalents, and restricted cash as of the periods presented:

The Company considers all short-term, highly liquid investments purchased with an original maturity of three months or less at the date of purchase to be cash equivalents. Certain cash equivalents consist of investments in debt securities that are classified as available-for-sale. As of both March 31, 2026 and 2025, the Company’s restricted cash, non-current relates to $3.7 million in Letters of Credit for its office leases. The carrying value of the restricted cash approximates fair value. During the three months ended March 31, 2026 and 2025, the Company purchased $1.0 million and $11.3 million of available-for-sale securities classified as cash equivalents, respectively.

Recently Issued Accounting Pronouncements

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, which provides all entities with a practical expedient of developing reasonable and supportable forecasts as part of estimating expected credit losses, that assumes that current conditions as of the balance sheet date do not change for the remaining life of the asset. ASU 2025-05 is effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods. The Company has elected to apply this practical expedient on a prospective basis. The adoption of ASU 2025-05 did not have a material impact on the Company’s condensed consolidated financial statements.

2. Fair Value of Financial Instruments

Certain assets and liabilities are carried at fair value in accordance with GAAP. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.

Valuation techniques used to measure fair value require the Company to maximize the use of observable inputs and minimize the use of unobservable inputs. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Financial assets and liabilities carried at fair value are to be classified and disclosed in one of the following three levels of the fair value hierarchy, of which the first two are considered observable and the last is considered unobservable:

•Level 1—Quoted prices in active markets for identical assets or liabilities.

•Level 2—Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

•Level 3—Unobservable inputs that are supported by little or no market activity that are significant to determining the fair value of the assets or liabilities, including pricing models, discounted cash flow methodologies, and similar techniques.

Short-term investments and certain cash equivalents consist of investments in debt securities that are available-for-sale. The table below segregates all assets that are measured at fair value on a recurring basis into the most appropriate level within the fair value hierarchy based on the inputs used to determine the fair value at the measurement date:

There were no transfers between Level 1, Level 2, or Level 3 during the three months ended March 31, 2026 and 2025. The Company’s cash equivalents and short-term investments for the periods presented were valued using quoted market prices or alternative pricing sources and models utilizing observable market inputs and were classified as Level 1 or Level 2, accordingly. As of March 31, 2026 and December 31, 2025, all other financial instruments not included in the table above were classified as Level 1 and approximates fair value.

3. Revenue Recognition

The following table summarizes the Company’s net revenue by type of service for the periods presented:

The Company generates net revenue from seller marketplace services and other services. Seller marketplace services primarily consist of marketplace transactions, subscriptions, and sponsored listings. Other services consist of other charges to the Company’s sellers including advertising revenues generated from displaying ads on the Company’s online marketplace. Net revenue by geographic region is determined based on the country the buyer is located in. For the three months ended March 31,

2026 and 2025, approximately 81% and 82% of on-platform marketplace transaction net revenue was derived from the United States, respectively. No other individual country’s net revenue exceeded 10% of total net revenue.

4. Short-Term Investments

The following tables summarize the estimated value of the Company’s short-term investments as of March 31, 2026 and December 31, 2025:

There were no sales of available-for-sale debt securities during the three months ended March 31, 2026 and 2025. The Company evaluates securities for expected credit losses on a quarterly basis with consideration given to the financial condition and near-term prospects of the issuer, whether the Company intends to sell the securities, and whether it is more likely than not that the Company will be required to sell the securities before recovery of their amortized cost basis.

As of March 31, 2026 no securities had been in a continuous unrealized loss position for more than 12 months. As of December 31, 2025, the Company had gross unrealized losses of less than $0.1 million, associated with an aggregate fair value of $2.1 million of short-term investments which have been in a continuous unrealized loss position for more than 12 months. The Company does not believe the unrealized losses represent other-than-temporary impairments based on its evaluation of available evidence.

The Company didnot recognize any credit losses related to available-for-sale debt securities during the three months ended March 31, 2026 and 2025. As of March 31, 2026, the Company does not intend to sell the investments and it is more likely than not that the Company will not be required to sell these before they mature.

As of March 31, 2026, the fair value of short-term investments by remaining contractual maturity consisted of the following:

5. Property and Equipment, net

As of March 31, 2026 and December 31, 2025, property and equipment, net consisted of the following:

As of March 31, 2026 and December 31, 2025, the net book value of internal-use software was $1.5 million and $1.8 million, respectively. Depreciation and amortization expense related to the Company’s property and equipment totaled $0.4 million for the three months ended March 31, 2026, which included amortization expense for internal-use software of $0.3 million. Depreciation and amortization expense related to the Company’s property and equipment totaled $0.5 million for the three months ended March 31, 2025, which included amortization expense for internal-use software of $0.4 million.

6. Accrued Expenses

As of March 31, 2026 and December 31, 2025, accrued expenses consisted of the following:

7. Leases

The Company’s operating lease arrangements are principally for office spaces in New York City. In August 2023, the Company entered into a sublease agreement as the sublessor for its office space in its former New York City headquarters (the “Sublease”). Sublease income is recognized as an offset to lease expense on a straight-line basis over the lease term and is included in general and administrative expenses on the Company’s condensed consolidated statement of operations. The sublease ends on December 31, 2029, the expiration date of the Company’s former New York City headquarter’s lease. In November 2023, the Company entered into a lease agreement, as the lessee, for the Company’s new corporate headquarters in New York City (the “Lease Agreement”) which commenced in January 2024 with afive year term and an option to extend the lease for an additional five years.

As of March 31, 2026, the Company had $15.7 million of operating lease right-of-use assets, $4.5 million and $13.0 million of current and non-current operating lease liabilities, respectively, and no finance leases on its condensed consolidated balance sheet. These operating lease arrangements, included in the measurement of lease liabilities, had a weighted-average remaining lease term of 3.6 years, a weighted-average discount rate of 6.3%, and do not reflect options to extend or terminate its leases, as management does not consider the exercise of these options to be reasonably certain. As of December 31, 2025, the Company had $16.7 million of operating lease right-of-use assets, $4.4 million and $14.1 million of current and non-current operating lease liabilities, respectively, and no finance leases on its consolidated balance sheet.

During the three months ended March 31, 2026, the Company paid $1.4 million for amounts included in the measurement of lease liabilities and $1.5 million during the three months ended March 31, 2025. The Company did not enter into any new lease arrangements during the three months ended March 31, 2026 or 2025.

The following table summarizes total lease expense, net for the periods presented:

Operating lease expense is recognized on a straight-line basis over the term of the arrangement beginning on the lease commencement date for lease arrangements that have an initial term greater than 12 months and therefore are recorded on the balance sheet. Short-term lease expense is recognized on a straight-line basis over the lease term for lease arrangements that have an initial term of 12 months or less and therefore are not recorded on the balance sheet. Variable lease expense is recognized as incurred and consists primarily of real estate taxes, utilities, and other office space related expenses. As of March 31, 2026, the total remaining operating lease payments included in the measurement of lease liabilities, and undiscounted remaining cash receipts from the Company’s Sublease was as follows (in thousands):

8. Other Current Liabilities

As of March 31, 2026 and December 31, 2025, other current liabilities consisted of the following:

9. Equity

Preferred Stock

Effective June 14, 2021, in connection with the closing of the Company’s Initial Public Offering (“IPO”), the Company’s board of directors (“Board”) is authorized to issue up to 10,000,000 shares of preferred stock, $0.01 par value per share, in one or more series. The Company's Board has the discretion to determine the rights, preferences, privileges and restrictions, including voting rights, dividend rights, conversion rights, redemption privileges and liquidation preferences, of each series of preferred stock. As of March 31, 2026 and December 31, 2025, no shares of preferred stock were issued or outstanding.

Common Stock

As of March 31, 2026 and December 31, 2025, the Company had authorized 400,000,000 shares of voting common stock, $0.01 par value per share. Each holder of the Company's common stock is entitled toone vote for each share on all matters to be voted upon by the stockholders and there are no cumulative rights. Subject to any preferential rights of any outstanding preferred stockholders, the Company's common stock are entitled to receive ratably the dividends, if any, as may be declared from time to time by the Board out of legally available funds. If there is a liquidation, dissolution, or winding up of the

Company, holders of the Company's common stock would be entitled to share in the Company's assets remaining after the payment of liabilities and any preferential rights of any outstanding preferred stock. The rights, preferences, and privileges of the holders of the Company's common stock are subject to, and may be adversely affected by, the rights of the holders of shares of any series of preferred stock which the Company may designate and issue in the future.

As of March 31, 2026 and December 31, 2025, the Company had reserved shares of common stock for issuance in connection with the following:

Treasury Stock

As of March 31, 2026, the Company had 8,973,648 shares of treasury stock carried at its cost basis of $44.4 million, and approximately $1.0 million remains available for future purchases.

The following table summarizes total treasury stock purchased under each of the Company's programs as of the periods presented:

10. Stock-based compensation

2011 Option Plan

The Company adopted the 2011 Stock Option and Grant Plan (the “2011 Plan”) on September 2, 2011 and amended and restated the plan on December 14, 2011. The 2011 Plan provided for the Company to grant incentive stock options (“ISOs”) or non-qualified stock options, restricted stock awards, and other stock-based awards to its employees, directors, officers, outside advisors, and non-employee consultants. At the time of grant, the options issued to new employees pursuant to the 2011 Plan expireten years from the date of grant and generally vest over four years, with 25% vesting on the first anniversary and the balance vesting ratably over the remaining 36 months. Generally, all additional options issued pursuant to the 2011 Plan expireten years from the date of grant and generally vest ratably over 48 months.

The 2011 Plan was administered by the Compensation Committee of the Board. The exercise prices, vesting, and other restrictions were determined at the discretion of Compensation Committee of the Board.

Following the completion of the Company’s IPO in June 2021, no additional awards and no shares of the Company’s common stock remain available for future issuance under the 2011 Plan. However, the 2011 Plan will continue to govern the terms and conditions of the outstanding awards previously granted thereunder.

2021 Stock Incentive Plan

In May 2021, the Company's Board adopted, and its stockholders approved, the 2021 Stock Incentive Plan (the “2021 Plan”), which became effective upon the SEC declaring the Company’s IPO registration statement effective. The 2021 Plan provides for the grant of ISOs, non-statutory stock options, restricted share awards, restricted stock unit awards (“RSUs”), stock appreciation rights, cash-based awards, and performance-based stock awards, or collectively, stock awards. ISOs may be granted only to the Company’s employees, including officers, and the employees of its parent or subsidiaries. All other stock awards may be granted to the Company’s employees, officers, non-employee directors, consultants, and the employees and consultants of its parent, subsidiaries, and affiliates. Depending on the nature of the award granted, the vesting terms may differ. Generally for new hire awards, the requisite service period for RSUs to vest is over four years from the grant date, with 25% vesting on the first anniversary and the balance vesting ratably on a quarterly basis over the remaining vesting period. Generally, all additional RSUs vest ratably on a quarterly basis over three orfour years beginning on the three month anniversary from the grant date. For RSU grants to members of our Board, initial awards vest ratably on an annual basis over three years, and annual refresh awards vest overone year.

The aggregate number of shares of the Company’s common stock that may be issued pursuant to stock awards under the 2021 Plan will not exceed the sum of (x)4,333,333 shares (as adjusted for stock splits, stock dividends, combinations, and the like), plus (y) the sum of (1) the number of reserved shares not issued or subject to outstanding awards under the 2011 Plan on the effective date of the 2021 Plan and (2) the number of shares subject to outstanding stock awards granted under the 2011 Plan and that, following the effective date of the 2021 Plan, (A) are subsequently forfeited or terminated for any reason before being exercised or settled, (B) are not issued because such stock award is settled in cash, (C) are subject to vesting restrictions and are subsequently forfeited, (D) are withheld or reacquired to satisfy the applicable exercise, strike, or purchase price, or (E) are withheld or reacquired to satisfy a tax withholding obligation, plus (z) an annual increase on the first day of each fiscal year, for a period of not more than 10 years, beginning on January 1, 2022 and ending on, and including, January 1, 2031, in an amount equal to the lesser of (i)5% of the outstanding shares on the last day of the immediately preceding fiscal year or (ii) such lesser amount that the Compensation Committee of the Board determines for purposes of the annual increase for that fiscal year. On January 1, 2026, the number of shares of common stock available for issuance under the 2021 Plan was automatically increased according to its terms by 1,842,415 shares.

As of March 31, 2026,2,049,030 shares were available for future grants of the Company’s common stock.

Stock Options

The following table summarizes the activity related to the Company’s stock options:

The aggregate intrinsic value of stock options is calculated as the difference between the exercise price of the stock options and the fair value of the Company’s common stock for all stock options that had exercise prices lower than the fair value of the Company’s common stock.

There wereno stock options granted during the three months ended March 31, 2026 and 2025. The aggregate intrinsic value of stock options exercised during the three months ended March 31, 2026 was less than $0.1 million. There wereno stock options exercised during the three months ended March 31, 2025. The total fair value of stock options vested was $0.3 million and $0.6 million during the three months ended March 31, 2026 and 2025, respectively.

Restricted Stock Units

The following table summarizes the activity related to the Company's restricted stock units:

The estimated weighted-average grant date fair value of restricted stock units granted was $5.40 and $2.99 per share for the three months ended March 31, 2026 and 2025, respectively. The total grant date fair value of restricted stock units vested was $2.5 million and $3.0 million for the three months ended March 31, 2026,and 2025, respectively.

Employee Stock Purchase Plan

In May 2021, the Company's Board adopted, and its stockholders approved, the Company's 2021 Employee Stock Purchase Plan (the "ESPP"). A total of 2,698,417 shares of the Company's authorized but unissued or reacquired shares of its common stock (as adjusted for stock splits, stock dividends, combinations, and the like) are available for issuance under the ESPP. The number of shares of the Company's common stock that will be available for issuance under the ESPP also includes an annual increase on the first day of each fiscal year, for a period of not more than 10 years, beginning on January 1, 2022 and ending on, and including, January 1, 2031, equal to the least of: (i)1% of the outstanding shares of the Company’s common stock on such date, (ii)400,000 shares (as adjusted for stock splits, stock dividends, combinations, and the like) or (iii) a lesser amount determined by the Compensation Committee or the Company’s Board. On January 1, 2026, the number of shares of common stock available for issuance under the ESPP was automatically increased according to its terms by 368,483 shares.

During regularly scheduled “offerings” under the ESPP, participants may purchase the Company’s common stock through payroll deductions, up to a maximum of 15% of their eligible compensation, or such lower limit as may be determined by the Compensation Committee from time to time. Participants will be able to withdraw their accumulated payroll deductions prior to the end of the offering period in accordance with the terms of the offering. Participation in the ESPP will end automatically on termination of employment. The purchase price will be specified pursuant to the offering, but cannot, under the terms of the ESPP, be less than 85% of the fair market value per share of the Company’s common stock on either the offering date or on the purchase date, whichever is less. The fair market value of the Company’s common stock for this purpose will generally be the closing price on the Nasdaq Global Market (or such other exchange as the Company’s common stock may be traded at the relevant time) for the date in question, or if such date is not a trading day, for the last trading day before the date in question. As of March 31, 2026, an initial offering period has not commenced, and for the three months ended March 31, 2026 and 2025, no shares of common stock were purchased under the ESPP.

Stock-Based Compensation Expense

The following table summarizes the classification of the Company’s stock-based compensation expense in the condensed consolidated statements of operations:

Stock-based compensation costs capitalized in connection with the Company’s internal-use software was less than $0.1 million for the three months ended March 31, 2026 and 2025. As of March 31, 2026, total unrecognized compensation expense related to unvested stock-based awards was $21.5 million, which is expected to be recognized over a weighted-average period of 2.4 years.

11. Income Taxes

The Company’s income tax provision wasimmaterial for the three months ended March 31, 2026 and 2025 due to net loss before income taxes expected to be incurred for the year ending December 31, 2026 and incurred for the year ended December 31, 2025, as well as the Company’s full valuation allowance maintained against its net deferred tax assets. The Company’s history of pre-tax losses represents sufficient evidence that a full valuation allowance is appropriate. As of March 31, 2026, the Company had no material liabilities for interest and penalties accrued.

12. Net Loss Per Share

The following table summarizes the computation of basic and diluted net loss per share for the three months ended March 31, 2026 and 2025:

The Company’s potentially dilutive securities, which include outstanding stock options and RSUs have been excluded from the computation of diluted net loss per share from each period as including them would have had an anti-dilutive effect. Therefore, the weighted average number of common shares outstanding used to calculate both basic and diluted net loss per share is the same. The Company excluded the following potentially dilutive securities for each period presented:

13. Commitments and Contingencies

Contractual Obligations

The Company has $20.6 million of non-cancelable contractual commitments as of March 31, 2026, primarily related to its operating lease agreements for both its current and former corporate headquarters in New York, NY, not including any offset for sublease income, as well as other software and support services. For those agreements with variable terms, the Company does not estimate what the total obligation may be beyond any minimum obligations. The following table represents the Company’s commitments under its purchase obligations as of March 31, 2026 (in thousands):

Legal Proceedings

The Company is subject to various claims and contingencies, which are in the scope of ordinary and routine litigation incidental to its business, including those related to regulation, litigation, business transactions, employee-related matters, and taxes, among others. When the Company becomes aware of a claim or potential claim, the likelihood of any loss or exposure is assessed. If it is probable that a loss will result and the amount of the loss can be reasonably estimated, the Company records a liability for the loss. The liability recorded includes probable and estimable legal costs incurred to date and future legal costs to the point in the legal matter where the Company believes a conclusion to the matter will be reached. The Company does not believe that it is party to any pending legal proceedings that are likely to have a material effect on its business, financial condition, or results of operations for the three months ended March 31, 2026. If the loss is not probable or the amount of the loss cannot be reasonably estimated, the Company discloses the claim if the likelihood of a potential loss is reasonably possible. During the year ended December 31, 2025, the Company received a $1.4 million complaint from a trustee in a third-party bankruptcy proceeding seeking recovery of amounts paid for various purchases made on the Company’s platform after the commencement of the bankruptcy proceedings. This complaint is similar to hundreds of other similar cases commenced in connection with the bankruptcy proceeding, and the Company intends to defend against the trustee’s claim vigorously. The Company does not believe potential losses are estimable or probable at this time.

Indemnification

In the ordinary course of business, the Company may provide indemnification of varying scope and terms to vendors, lessors, business partners, and other parties with respect to certain matters including, but not limited to, losses arising out of breach of such agreements or from intellectual property infringement claims made by third parties. In addition, the Company has entered into indemnification agreements with members of its Board and officers that will require the Company, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors or officers. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is, in many cases, unlimited. To date, the Company has not incurred any material costs as a result of such indemnifications.

Sales and other indirect tax contingencies

The Company conducts operations in many tax jurisdictions for which indirect taxes, such as sales, use and other indirect taxes, are assessed on its operations. Although the Company is diligent in collecting and remitting such taxes, there is uncertainty as to what constitutes sufficient presence or responsibility for a jurisdiction to levy taxes, fees, and surcharges for sales made on an e-commerce platform. The Company recognized liabilities for contingencies related to sales and indirect taxes deemed probable and estimable totaling $1.8 million and $1.3 million as of March 31, 2026 and December 31, 2025, respectively, which are included in other current liabilities in the Company’s condensed consolidated balance sheets.