BitGo Holdings Chief Compliance Officer Phantom Stock Units Settlement

This Form 4 filing reports that Jeff Peter Horowitz, Chief Compliance Officer of BitGo Holdings, Inc., had phantom stock units settled for cash on May 22, 2026. The filing details two separate transactions involving cash-settled restricted stock units: 521 units settled (leaving 5,478 units remaining that vest through March 2028) and 1,563 units settled (leaving 24,227 units remaining that vest through December 2028). The phantom stock units represent the economic equivalent of Class A common stock and were previously included in the officer's total holdings. Following these settlements, Horowitz directly holds 287,662 shares of Class A common stock. The filing clarifies the adjustment to total holdings due to the separation of phantom stock units from direct stock holdings in reporting.