X0508 4 2025-09-17 0001740604 BITGO HOLDINGS, INC. BTGO 0002084812 Reginelli Edward C/O BITGO HOLDINGS, INC. 101 S. REID STREET, SUITE 307, PMB# 9793 SIOUX FALLS SD 57103 false true false false CFO 0 Class A Common Stock 2025-09-17 4 A 0 26000 0 A 295000 D Class A Common Stock 2025-09-25 4 M 0 173000 .21 A 468000 D Stock Option (Right to Buy) .21 2025-09-25 4 M 0 125000 0 D 2032-06-29 Class A Common Stock 125000 0 D Stock Option (Right to Buy) .21 2025-09-25 4 M 0 48000 0 D 2032-10-06 Class A Common Stock 48000 16000 D .The transaction occurred prior to the Issuer's registration of a class of equity securities under Section 12 of the Exchange Act in connection with the Issuer's initial public offering, and the transaction is reported herein pursuant to Rule 16a-2(a). Represents a restricted stock unit award that was acquired through an exempt transaction with the Issuer. The options are fully vested. The options vested as to 25% of the award, from which certain shares have been previously exercised, on September 15, 2023. The remaining 75% of the option will vest in equal monthly installments thereafter until such time as the options are 100% vested, subject to the Reporting Person's provision of service to the Issuer on each vesting date. /s/ Edward Reginelli 2026-01-23