X0609 4 2026-07-01 0 0001876042 Circle Internet Group, Inc. CRCL 0001539940 Allaire Jeremy false C/O CIRCLE INTERNET GROUP, INC. ONE WORLD TRADE CENTER, 87TH FLOOR NEW YORK NY 10007 1 1 0 0 Chairman and CEO 0 Class A Common Stock 510579 D Class A Common Stock 64862 I By Spruce Trust Class A Common Stock 64866 I By Oak Trust Class A Common Stock 64862 I By Beech Trust Class A Common Stock 64862 I By Chestnut Trust Restricted Stock Units 2026-07-01 4 M 0 2435 0 D Class A Common Stock 2435 14605 D Restricted Stock Units 2026-07-01 4 M 0 6742 0 D Class A Common Stock 6742 121359 D Restricted Stock Units 2026-07-01 4 M 0 6018 0 D Class A Common Stock 6018 180519 D Class B Common Stock 2026-07-01 4 M 0 15195 0 A Class B Common Stock 15195 15653924 D Class B Common Stock 2026-07-01 4 F 0 8404 0 D Class B Common Stock 8404 15645520 D Class B Common Stock Class A Common Stock 296296 296296 I By Allaire 2025 Qualified Annuity Trust Represents 287,648 shares of Class A common stock held outright by the reporting person and 222,931 shares of Class A common stock issuable upon the vesting of restricted stock units. Represents shares of Class A common stock held through an irrevocable non-grantor trust, of which the Reporting Person's legal counsel is the sole trustee and the Reporting Person's child is the beneficiary. The Reporting Person disclaims beneficial ownership of the shares of Class A common stock. Each Restricted Stock Unit represents a contingent right to receive one share of Class B Common Stock. The Restricted Stock Units vest in substantially equal monthly installments from July 1, 2025 through January 1, 2027, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date. The Restricted Stock Units vest in substantially equal monthly installments from July 1, 2025 through January 1, 2028, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date. 1/4 of the shares subject to the Restricted Stock Units vest on January 1, 2026 and the remaining portion vest in 36 substantially equal monthly installments thereafter, in each case, subject to the Reporting Person's continued service relationship with Circle Internet Group, Inc. through each applicable vesting date. Each share of Class B common stock is convertible into Class A common stock on a one-for-one basis at the option of the Reporting Person. In addition, each share of Class B common stock will convert automatically into Class A common stock on a one-for-one basis upon any transfer of such share, except for certain permitted transfers described in the Issuer's Amended and Restated Certificate of Incorporation. Shares of Class B common stock do not expire. The shares of Class A common stock were withheld to satisfy the Reporting Person's tax withholding obligation upon the vesting of restricted stock units. Represents shares of Class B common stock held through an irrevocable grantor trust, of which the Reporting Person is the sole trustee and the Reporting Person is beneficiary. The Reporting Person is entitled to annuity payments from the trust, with any remaining assets to be distributed to the Allaire 2025 GRAT Remainder Trust, of which the Reporting Person's children are beneficiaries. The Reporting Person disclaims beneficial ownership of the shares of Class B common stock except to the extent of his pecuniary interest therein. /s/ Sarah K. Wilson, as Attorney-in-Fact for Jeremy Allaire 2026-07-02