X0708 D/A LIVE 0002105425 Colbeck Strategic Income I Master Fund LP 888 7TH AVENUE, 29TH FLOOR NEW YORK NY NEW YORK 10106 212-603-2800 DELAWARE None None Limited Partnership true 2025 Jason Colodne 888 Seventh Avenue 29th Floor New York NY NEW YORK 10106 Executive Officer Managing Member of the General Partner of the Issuer Jason Beckman 888 Seventh Avenue 29th Floor New York NY NEW YORK 10106 Executive Officer Managing Member of the General Partner of the Issuer N/A Colbeck Capital Management, LLC 888 Seventh Avenue 29th Floor New York NY NEW YORK 10106 Promoter Investment Manager of the Issuer N/A Colbeck Strategic Income I GP LLC 888 Seventh Avenue 29th Floor New York NY NEW YORK 10106 Executive Officer General Partner of the Issuer Pooled Investment Fund Private Equity Fund false Decline to Disclose 06b 3C 3C.7 true 0002105425-26-000001 2026-01-02 true true true false 0 PJT Partners LP 171058 None None 280 Park Avenue 15th Floor New York NY NEW YORK 10017 All States false Finex Hong Kong Limited None None None Unit 2005-06, 20/F, 88WL 88 Wing Lok Street Sheung Wan K3 HONG KONG 00000 true Indefinite 20000000 Indefinite false 1 0 true 490000 true 0 Interests in the Issuer are indirectly subject to incentive allocations and management fees, which are fully discussed in the Issuer's confidential offering materials. false Colbeck Strategic Income I Master Fund LP Morris Beyda Morris Beyda Authorized Signatory 2026-07-23