X0708 D/A LIVE 0002067241 Washington Harbour Sandbox LLC 1201 WILSON BLVD STE 2210 ARLINGTON VA VIRGINIA 22209 2028916202 DELAWARE None None Limited Liability Company true 2023 - Washington Harbour Partners, LP 1201 WILSON BLVD ARLINGTON VA VIRGINIA 22209 Director Promoter Investment Manager and General Partner of the Issuer Pooled Investment Fund Private Equity Fund false Decline to Disclose 06b 3C 3C.1 true 0002067241-25-000001 2024-12-10 true true false 100000 Indefinite 1000000 Indefinite false 11 0 0 0 false Washington Harbour Sandbox LLC /s/ Stephen Guffey Stephen Guffey Chief Financial Officer and Chief Compliance Officer 2026-10-09