| GAP 93, GAPCO III, GAPCO IV, GAPCO V, GAPCO GmbH and GAPCO CDA share beneficial ownership of the shares of Class A common stock held by GA SQRS. GAPCO III, GAPCO IV, GAPCO V, GAPCO CDA and GAP 100 share beneficial ownership of the shares of Class A common stock held by GA SQRS II. The general partner of each of GA SQRS and GA SQRS II is GA SPV. The general partner of GAP 100 and GAP 93 is GA GenPar and the general partner of GA GenPar is GA LP. GA LP, which is controlled by the Management Committee of GASC MGP, LLC (the “Management Committee”), is the managing member of GAPCO III, GAPCO IV and GAPCO V, the general partner of GAPCO CDA and is the sole member of GA SPV. The general partner of GAPCO GmbH is GAPCO Management. The Management Committee controls the investment and voting decisions of GAPCO Management. By virtue of the foregoing, GAP 93, GAPCO III, GAPCO IV, GAPCO V, GAPCO GmbH, GAPCO CDA, GA SPV, GA GenPar, GA LP and GAPCO Management may be deemed to share voting power and the power to direct the disposition of the shares that GA SQRS owns of record and GAPCO III, GAPCO IV, GAPCO V, GAPCO CDA and GAP 100, GA SPV, GA GenPar and GA LP may be deemed to share voting power and the power to direct the disposition of the shares that GA SQRS II owns of record. Each of the members of the Management Committee disclaims ownership of the shares of Class A common stock reported herein except to the extent that he has a pecuniary interest therein. The name, the address and the citizenship of each of the members of the Management Committee as of the date hereof is attached hereto as Schedule A and is hereby incorporated by reference. Anton J. Levy, an employee of GASC and director of Squarespace, Inc., holds 16,751 shares of Class A common stock that were issued upon the settlement of restricted stock units granted to him and holds the securities solely for the benefit of GASC, which is controlled by the Management Committee. Pursuant to a Voting and Support Agreement, dated as of May 10, 2021 (the “Voting and Support Agreement”), among GA SQRS, GA SQRS II (together with each of their respective related parties, “GA”), Anthony Casalena (the “Founder”), the Company and the other individuals and entities from time to time party thereto, the Founder has agreed to certain arrangements with respect to the shares of Class A common stock and Class B common stock held by the Founder and certain entities affiliated with the Founder, including to vote to elect the individual nominated by GA to the Company’s board of directors in accordance with the terms of the Voting and Support Agreement. By virtue of the Voting and Support Agreement and the obligations and rights thereunder, the Reporting Persons in this Schedule 13G, the Founder and/or certain of their affiliates may be deemed to constitute a “group” for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended. Based on the Founder’s Schedule 13G amendment filed with the U.S. Securities and Exchange Commission on February 13, 2024, such a “group” would be deemed to beneficially own an aggregate of 62,629,053 shares of common stock, or 46.1% of the Company’s outstanding shares of common stock calculated pursuant to Rule 13d-3. The Reporting Persons expressly disclaim the formation of a group and beneficial ownership over any shares of common stock that they may be deemed to beneficially own solely by reason of the Voting and Support Agreement. This Schedule 13G does not reflect any shares of common stock beneficially owned by the Founder. Amount Beneficially Owned: By virtue of the relationship described above, each of the Reporting Persons may be deemed to beneficially own the shares of Class A common stock indicated on row (9) on such Reporting Person’s cover page included herein. Percentage Owned: All calculations of percentage ownership herein are based on an aggregate of 93,083,612 shares of Class A common stock outstanding, consisting of (i) 88,125,267 shares of Class A common stock reported to be outstanding as of November 1, 2023, as reported in the Company’s prospectus filed under Rule 424(b)(7), filed with the U.S. Securities and Exchange Commission on November 17, 2023, and (ii) 4,958,345 shares of Class A common stock issuable upon conversion of the Class B common stock held by GA SQRS II. |