SCHEDULE 13G/A 0001703027 XXXXXXXX LIVE 3 Common Shares, par value $0.01 per share 12/31/2025 0001636639 Fidelis Insurance Holdings Ltd G3398L118 Wellesley House South 90 Pitts Bay Road Pembroke D0 HM08 Rule 13d-1(d) Crestview, L.L.C. DE 0.00 14251474.00 0.00 14251474.00 14251474.00 N 13.8 CO The total in Rows (6), (8), and (9) represents the 14,251,474 Common Shares, par value $0.01 per share ("Common Shares") of Fidelis Insurance Holdings Limited (the "Issuer") that are beneficially owned by Crestview Partners III GP, L.P., Crestview Partners IV GP, L.P. Crestview FIHL Holdings, L.P. ("Crestview FIHL Holdings"), Crestview FIHL TE Holdings, Ltd. ("Crestview FIHL TE"), Crestview IV FIHL Holdings, L.P. ("Crestview IV FIHL"), Crestview IV FIHL TE Holdings, LLC ("Crestview IV FIHL TE") and Crestview, L.L.C. and may be deemed to be beneficially owned by the Reporting Person. Crestview Partners III GP, L.P. E9 0.00 9739675.00 0.00 9739675.00 9739675.00 N 8.7 PN The total in Rows (6), (8), and (9) represents the 9,739,675 Common Shares of the Issuer that are beneficially owned by Crestview Partners III GP, L.P., Crestview FIHL Holdings and Crestview FIHL TE and may be deemed to be beneficially owned by the Reporting Person. Crestview FIHL Holdings, L.P. E9 0.00 9281747.00 0.00 9281747.00 9281747.00 N 8.3 PN Crestview FIHL TE Holdings, Ltd. E9 0.00 457928.00 0.00 457928.00 457928.00 N 0.4 CO Crestview Partners IV GP, L.P. DE 0.00 4511799.00 0.00 4511799.00 4511799.00 N 4.0 PN The total in Rows (6), (8), and (9) represents the 4,511,799 Common Shares of the Issuer that are beneficially owned by Crestview Partners IV GP, L.P., Crestview IV FIHL and Crestview IV FIHL TE and may be deemed to be beneficially owned by the Reporting Person. Crestview IV FIHL Holdings, L.P. E9 0.00 4350588.00 0.00 4350588.00 4350588.00 N 3.9 PN Crestview IV FIHL TE Holdings, LLC E9 0.00 161211.00 0.00 161211.00 161211.00 N 0.1 CO Fidelis Insurance Holdings Ltd Wellesley House South, 90 Pitts Bay Road, Pembroke, Bermuda, HM08 See Item 2(b). Crestview, L.L.C. c/o Crestview Partners 590 Madison Avenue, 42nd Floor New York, NY 10022 Crestview Partners III GP, L.P. c/o Crestview Partners 590 Madison Avenue, 42nd Floor New York, NY 10022 Crestview FIHL Holdings, L.P. c/o Crestview Partners 590 Madison Avenue, 42nd Floor New York, NY 10022 Crestview FIHL TE Holdings, Ltd. c/o Crestview Partners 590 Madison Avenue, 42nd Floor New York, NY 10022 Crestview Partners IV GP, L.P. c/o Crestview Partners 590 Madison Avenue, 42nd Floor New York, NY 10022 Crestview IV FIHL Holdings, L.P. c/o Crestview Partners 590 Madison Avenue, 42nd Floor New York, NY 10022 Crestview IV FIHL TE Holdings, LLC c/o Crestview Partners 590 Madison Avenue, 42nd Floor New York, NY 10022 See Row (4) of each Reporting Person's cover page. Y See Row (9) of each Reporting Person's cover page. Crestview, L.L.C. may be deemed to have beneficial ownership of the 9,739,675 Common Shares beneficially owned by Crestview Partners III GP, L.P. and the 4,511,799 Common Shares beneficially owned by Crestview Partners IV GP, L.P. Crestview Partners III GP, L.P. is the general partner of investment funds that own Crestview FIHL Holdings, L.P. and Crestview FIHL TE Holdings, Ltd. Crestview Partners III GP, L.P. and such investment funds may be deemed to have beneficial ownership of the 9,281,747 Common Shares directly owned by Crestview FIHL Holdings, L.P. and 457,928 Common Shares directly owned by Crestview FIHL TE Holdings, Ltd. Crestview Partners IV GP, L.P. is the general partner of investment funds that own Crestview IV FIHL Holdings, L.P. and Crestview IV FIHL TE Holdings, LLC. Crestview Partners IV GP, L.P. and such investment funds may be deemed to have beneficial ownership of the 4,350,588 Common Shares directly owned by Crestview IV FIHL Holdings, L.P. and 161,211 Common Shares directly owned by Crestview IV FIHL TE Holdings, LLC. Crestview, L.L.C. is the general partner of Crestview Partners III GP, L.P. and Crestview Partners IV GP, L.P. Daniel Kilpatrick is a member of the Issuer's board of directors. Mr. Kilpatrick is a partner of Crestview, L.L.C. and Crestview Advisors, L.L.C., which provides investment advisory and management services to the investment funds referred to above. Each reporting person disclaims beneficial ownership of the reported securities except and to the extent of its pecuniary interest therein. See Row (11) of each Reporting Person's cover page. The percentage herein is based on 103,026,764 Common Shares outstanding as of September 30, 2025, as reported in the Issuer's Form 6-K filed November 12, 2025. See Row (5) of each Reporting Person's cover page. See Row (6) of each Reporting Person's cover page. See Row (7) of each Reporting Person's cover page. See Row (8) of each Reporting Person's cover page. Y Y Y Y Y Y Exhibit 99.1: Joint Filing Agreement Crestview, L.L.C. /s/ Evelyn C. Pellicone 02/17/2026 Crestview Partners III GP, L.P. /s/ Evelyn C. Pellicone 02/17/2026 Crestview FIHL Holdings, L.P. /s/ Evelyn C. Pellicone 02/17/2026 Crestview FIHL TE Holdings, Ltd. /s/ Evelyn C. Pellicone 02/17/2026 Crestview Partners IV GP, L.P. /s/ Evelyn C. Pellicone 02/17/2026 Crestview IV FIHL Holdings, L.P. /s/ Evelyn C. Pellicone 02/17/2026 Crestview IV FIHL TE Holdings, LLC /s/ Evelyn C. Pellicone 02/17/2026