X0708 D LIVE 0002156000 Blackstone Rosetta COF IV Senior SCSp 412F RTE D'ESCH LUXEMBOURG N4 LUXEMBOURG L-1471 352 621 652 059 LUXEMBOURG None None Other Luxembourg Special Limited Partnership true 2026 Apostolia Siavala 412F Rte d'Esch Luxembourg N4 LUXEMBOURG L-1471 Executive Officer Manager of Rosetta COF IV Senior GP, S.A.R.L. Pedro Alonso-Lamberti 6A Rte de Treves Senningerberg N4 LUXEMBOURG L-2633 Executive Officer Manager of Rosetta COF IV Senior GP, S.A.R.L. Achene Boulhais 412F Rte d'Esch Luxembourg N4 LUXEMBOURG L-1471 Executive Officer Manager of Rosetta COF IV Senior GP, S.A.R.L. N/A Rosetta COF IV Senior GP, S.A.R.L. 412F Rte d'Esch Luxembourg N4 LUXEMBOURG L-1471 Executive Officer General Partner of Blackstone Rosetta COF IV Senior SCSp Pooled Investment Fund Other Investment Fund false Decline to Disclose 06b 3C 3C.1 3C.7 false true false true true false 0 Indefinite 0 Indefinite false 0 0 0 0 false Blackstone Rosetta COF IV Senior SCSp /s/ Apostolia Siavala Apostolia Siavala Executive Officer 2026-09-21