X0508 4 2025-12-01 0 0001876042 Circle Internet Group, Inc. CRCL 0002060495 Chandhok Nikhil C/O CIRCLE INTERNET GROUP, INC. ONE WORLD TRADE CENTER, 87TH FLOOR NEW YORK NY 10007 0 1 0 0 Chief Product & Tech. Officer 0 Class A Common Stock 2025-12-01 4 M 0 100000 25.81 A 593639 D Class A Common Stock 2025-12-01 4 S 0 39018 75.80 D 554621 D Class A Common Stock 2025-12-01 4 S 0 25003 76.78 D 529618 D Class A Common Stock 2025-12-01 4 S 0 12873 78.24 D 516745 D Class A Common Stock 2025-12-01 4 S 0 23106 78.92 D 493639 D Class A Common Stock 2025-12-01 4 F 0 18665 79.93 D 474974 D Stock Option (Right to Buy) 25.81 2025-12-01 4 M 0 100000 0 D 2032-02-04 Class A Common Stock 100000 1169677 D The sales reported on this Form 4 represent shares sold by the Reporting Person to cover additional tax withholding obligations in connection with current and future vesting and settlement of restricted stock units. These shares were sold in multiple transactions at prices ranging from $75.29 to $76.29, inclusive. The weighted average sale price was $75.80. The Reporting Person undertakes to provide to the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range. These shares were sold in multiple transactions at prices ranging from $76.30 to $77.24, inclusive. The weighted average sale price was $76.78. The Reporting Person undertakes to provide to the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range. These shares were sold in multiple transactions at prices ranging from $77.60 to $78.56, inclusive. The weighted average sale price was $78.24. The Reporting Person undertakes to provide to the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range. These shares were sold in multiple transactions at prices ranging from $78.67 to $79.07, inclusive. The weighted average sale price was $78.92. The Reporting Person undertakes to provide to the Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range. 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 159,499 shares of Class A common stock held outright by the Reporting Person and 315,475 shares of Class A common stock subject to outstanding 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 2025-12-03