X0609 4 2026-09-04 0 0001876042 Circle Internet Group, Inc. CRCL 0002060495 Chandhok Nikhil false C/O CIRCLE INTERNET GROUP, INC. ONE WORLD TRADE CENTER, 87TH FLOOR NEW YORK NY 10007 0 1 0 0 Chief Product & Tech. Officer 1 Class A Common Stock 2026-09-04 4 M 0 15496 25.81 A 725813 D Class A Common Stock 2026-09-08 4 M 0 23333 25.81 A 749146 D Class A Common Stock 2026-09-08 4 S 0 26666 100.40 D 722480 D Stock Option (Right to Buy) 25.81 2026-09-04 4 M 0 15496 0 D 2032-02-04 Class A Common Stock 15496 354182 D Stock Option (Right to Buy) 25.81 2026-09-08 4 M 0 23333 0 D 2032-02-04 Class A Common Stock 23333 330849 D This transaction reflects the Reporting Person's exercise of options and acquisition of the underlying shares. The Reporting Person retained the shares acquired upon exercise to begin the applicable holding period for tax purposes. The reported sale was made pursuant to a 10b5-1 trading plan. Represents 456,282 shares of Class A common stock held outright by the Reporting Person and 266,198 shares of Class A common stock issuable upon the vesting of restricted stock units. 1/4 of the shares of Class A Common stock subject to the option award vested upon the one-year anniversary following the vesting commencement date and the remaining portion vest in 36 successive 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. /s/ Sarah K. Wilson, as Attorney-in-Fact for Nikhil Chandhok 2026-09-09