X0708 D/A LIVE 0001754366 ECP Opportunity Fund II LLC 100 Shoreline Highway Suite B-210 MILL VALLEY CA CALIFORNIA 94941 (415) 269-3092 DELAWARE None None Limited Liability Company true Leonard Hochschild 100 Shoreline Highway Suite B-210 Mill Valley CA CALIFORNIA 94941 Executive Officer Managing Member of Environmental Commodity Partners LP, the Issuer's Investment Adviser. Alex Rau 100 Shoreline Highway Suite B-210 Mill Valley CA CALIFORNIA 94941 Executive Officer Managing Member of Abatement Capital LLC, the Issuer's Manager, and Managing Member of the Issuer's Investment Adviser. Blake Schaefer 100 Shoreline Highway Suite B-210 Mill Valley CA CALIFORNIA 94941 Executive Officer Managing Member of Environmental Commodity Partners LP, the Issuer's Investment Adviser. Tyler Broehm 100 Shoreline Highway Suite B-210 Mill Valley CA CALIFORNIA 94941 Executive Officer CFO of the Issuer's Investment Manager. Remy Ruiz 100 Shoreline Highway Suite B-210 Mill Valley CA CALIFORNIA 94941 Executive Officer COO of the Issuer's Investment Manager. Pooled Investment Fund Hedge Fund false Decline to Disclose 06b true 0001754366-25-000003 2018-09-01 true true false 1000000 Thales Capital Partners LLC 172125 None None 540 MADISON AVENUE 4TH FLOOR NEW YORK NY NEW YORK 10022 All States false Gallatin Capital LLC 124738 None None 444 Madison Avenue 29th Floor New York NY NEW YORK 10022 All States false Indefinite 406879399 Indefinite false 41 510000 true 0 0 false ECP Opportunity Fund II LLC /s/ Tyler Broehm Tyler Broehm CFO of the Issuer's Investment Manager 2026-10-06