X0708 D LIVE 0002139646 GrayMatter Co-Investor, L.P. 299 PARK AVENUE, 4TH FLOOR NEW YORK NY NEW YORK 10171 212-271-3800 DELAWARE None None Limited Partnership true 2026 - Tailwind IV Co-Invest Partners (GP) LP 299 PARK AVENUE, 4TH FLOOR NEW YORK NY NEW YORK 10171 Promoter General Partner of the Issuer - Tailwind Capital Group LLC 299 PARK AVENUE, 4TH FLOOR NEW YORK NY NEW YORK 10171 Promoter General Partner of the General Partner of the Issuer - Tailwind Capital Group Holdings LLC 299 PARK AVENUE, 4TH FLOOR NEW YORK NY NEW YORK 10171 Promoter Managing Member of Tailwind Capital Group LLC. - Tailwind Management LP 299 PARK AVENUE, 4TH FLOOR NEW YORK NY NEW YORK 10171 Promoter Investment Adviser of the Issuer (the "Investment Adviser"). Lawrence B. Sorrel 299 PARK AVENUE, 4TH FLOOR NEW YORK NY NEW YORK 10171 Executive Officer Managing Partner of Tailwind Capital Group LLC. Managing Partner of Tailwind Capital Group Holdings LLC. Jeffrey M. Calhoun 299 PARK AVENUE, 4TH FLOOR NEW YORK NY NEW YORK 10171 Executive Officer Managing Partner of Tailwind Capital Group LLC. Managing Partner of Tailwind Capital Group Holdings LLC. Pooled Investment Fund Private Equity Fund false Decline to Disclose 06b 3C 3C.7 false true false true false 0 PJT Partners LP 000171058 None None 280 Park Avenue, 15th Floor New York NY NEW YORK 10017 All States false Indefinite 0 Indefinite false 0 1750000 true 0 Sales Commissions represents an estimate of the total sales commissions to be paid to the entities listed in item 12 above overtime as a result of the anticipated sales of interests in the Issuer. 0 The Issuer's General Partner is entitled to carried interest. A designee of Issuer's investment adviser may receive monitoring fees and transaction fees from Issuer's portfolio company. The Issuer will pay an administrative fee to the Investment Adviser false GrayMatter Co-Investor, L.P. /s/ Jeffrey M. Calhoun Jeffrey M. Calhoun Managing Partner of Tailwind Capital Group LLC 2026-06-23