X0306 4 2022-04-19 0001805833 System1, Inc. SST 0001814538 BGPT Trebia LP 220 FIFTH AVENUE, FLOOR 17 NEW YORK NY 10001 true true 0001814800 Bridgeport Partners GP LLC 220 FIFTH AVENUE, FLOOR 17 NEW YORK NY 10001 true true 0001226913 MARTIRE FRANK R 220 FIFTH AVENUE, 17TH FLOOR NEW YORK NY 10001 true true 0001815207 Martire Frank III 220 FIFTH AVENUE, 17TH FLOOR NEW YORK NY 10001 true true Class A common stock, par value $0.0001 per share 2022-04-19 4 M 0 2499167 11.5 A 5877699 D Class A common stock, par value $0.0001 per share 2022-04-19 4 D 0 1426820 20.14 D 4450879 D Warrants 11.5 2022-04-19 4 M 0 2499167 D 2022-02-26 2027-01-27 Class A common stock, par value $0.0001 2499167 0 D This form is being filed by each of the following Reporting Persons: BGPT Trebia LP ("BGPT"), Bridgeport Partners GP LLC ("Bridgeport Partners GP"), Frank R. Martire, Jr. and Frank Martire, III (collectively, the "Reporting Persons"). The sole general partner of BGPT is Bridgeport Partners GP. Each of Frank R. Martire, Jr. and Frank Martire, III is a managing member of Bridgeport Partners GP. Because of the relationships among the Reporting Persons, the Reporting Persons may be deemed to beneficially own the securities reported herein to the extent of their respective pecuniary interests. Each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any. Directly owned by BGPT. BGPT exercised warrants to purchase shares of the Issuer's Class A common stock. The warrants were exercised on a cashless basis pursuant to Section 3.3.1(c) of that certain Warrant Agreement, dated June 19, 2020, by and between Trebia Acquisition Corp. (n/k/a System1, Inc.) and Continental Stock Transfer Trust Company. Represents shares of Class A common stock "withheld" in connection with the cashless exercise. Not applicable. Exhibit 99.1 (Joint Filer Information and Signatures) is hereby incorporated by reference herein. See Exhibit 99.1 2022-04-20