X0708 D/A LIVE 0001743614 Blackstone Infrastructure Partners (Supplemental Account II) L.P. 345 PARK AVENUE NEW YORK NY NEW YORK 10154 (212) 583-5000 DELAWARE None None Limited Partnership true n/a Blackstone Infrastructure Associates Non-ECI L.P. 345 Park Avenue New York NY NEW YORK 10154 Promoter General Partner of the Issuer (the "GP") n/a BIA GP L.P. 345 Park Avenue New York NY NEW YORK 10154 Promoter General Partner of the GP of the Issuer (the "GP of the GP") n/a BIA GP L.L.C. 345 Park Avenue New York NY NEW YORK 10154 Promoter General Partner of the GP of the GP of the Issuer (the "General Partner of the GP of the GP") n/a Blackstone Infrastructure Advisors L.L.C. 345 Park Avenue New York NY NEW YORK 10154 Promoter Investment Advisor Sean Klimczak 345 Park Avenue New York NY NEW YORK 10154 Executive Officer Executive Officer of the General Partner of the GP of the GP Vikrant Sawhney 345 Park Avenue New York NY NEW YORK 10154 Executive Officer Executive Officer of the General Partner of the GP of the GP Christopher Striano 345 Park Avenue New York NY NEW YORK 10154 Executive Officer Executive Officer of the General Partner of the GP of the GP Christopher Placca 345 Park Avenue New York NY NEW YORK 10154 Executive Officer Executive Officer of the General Partner of the GP of the GP Joseph Rocco 345 Park Avenue New York NY NEW YORK 10154 Executive Officer Executive Officer of the General Partner of the GP of the GP Paul Schlaack 345 Park Avenue New York NY NEW YORK 10154 Executive Officer Executive Officer of the General Partner of the GP of the GP Michael Knauss 345 Park Avenue New York NY NEW YORK 10154 Executive Officer Executive Officer of the General Partner of the GP of the GP Pooled Investment Fund Other Investment Fund false Decline to Disclose 06b 3C 3C.7 true 0001743614-25-000003 2018-07-16 true true false 0 Indefinite 566012260 Indefinite Total Amount Sold includes sponsor's commitment. false 7 0 0 0 false Blackstone Infrastructure Partners (Supplemental Account II) L.P. /s/ Michael Knauss Michael Knauss Managing Director and Chief Compliance Officer 2026-10-22