X0508 4 2026-02-26 0 0001876042 Circle Internet Group, Inc. CRCL 0001672444 Date Rajeev V C/O CIRCLE INTERNET GROUP, INC. ONE WORLD TRADE CENTER, 87TH FLOOR NEW YORK NY 10007 1 0 0 0 0 Class A Common Stock 2026-02-26 4 S 0 23254 89.62 D 0 I By Fenway Summer Charitable Remainder Trust Class A Common Stock 152328 D These shares were sold in multiple transactions at prices ranging from $89.41 to $89.81, inclusive. The weighted average sale price was $89.62. 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 Reporting Person is the sole trustee of the Fenway Summer Charitable Remainder Trust and The Alzheimer's Association is the residual beneficiary of the Fenway Summer Charitable Remainder Trust. The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein. Sarah K. Wilson, as Attorney-in-Fact for Rajeev V. Date 2026-03-02