144 0001831624 XXXXXXXX LIVE 0000320121 Telos Corporation 001-08443 19886 Ashburn Roa Ashburn VA 20147 703-726-2270 Frederick D. Schaufeld Affiliate Common J.P. Morgan Securities LLC

390 Madison Avenue - 6th Floor New York NY 10017

275821 1597003.59 73754329 11/25/2025 Nasdaq Common 05/29/2024 Purchase Open Market N 53086 05/29/2024 Cash Common 05/31/2024 Purchase Open Market N 119295 05/31/2024 Cash Common 05/28/2024 Purchase Open Market N 46833 05/28/2024 Cash Common 05/30/2024 Purchase Open Market N 56607 05/30/2024 Cash N Frederick Schaufeld Revocable Trust

Care of Telos Corp 19886 Ashburn Road Ashburn VA 20147

Common 09/12/2025 255449 1722262.7 The shares represented on this filing are being sold by Frederick D. Schaufeld, as trustee for the Frederick D. Schaufeld Revocable Trust 11/25/2025 /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Frederick D. Schaufeld