X0306 4 2022-05-10 0001805833 System1, Inc. SST 0000903213 FOLEY WILLIAM P II C/O 1701 VILLAGE CENTER CIRCLE LAS VEGAS NV 89134 true true Class A common stock, par value $0.0001 per share 2022-05-10 4 A 0 24000 A 24000 D Class A common stock, par value $0.0001 per share 6601898 I See Note Represents an award of restricted stock units pursuant to the Issuer's 2022 Incentive Award Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A common stock. Pursuant to the terms of the award agreement, 4,800 of the restricted stock units vested on the date of grant, and the remaining aggregate 19,200 restricted stock units will vest ratably on each of July 28, 2022, October 28, 2022, January 28, 2023 and April 28, 2023. Not applicable. Directly owned by Trasimene Trebia, LP ("Trasimene"). The Reporting Person is the sole member of Trasimene Trebia, LLC ("Trasimene Trebia" and together with Trasimene and the Reporting Person, the "Parties"), which is the sole general partner of Trasimene. Because of the relationships among the Parties, the Parties may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each of the Parties disclaims beneficial ownership of the securities reported herein, except to the extent of such Party's pecuniary interest therein, if any. Exhibit 24.1 (Power of Attorney) is hereby incorporated by reference herein. /s/ Daniel Weinrot, Attorney-in-Fact for William P. Foley, II 2022-05-12