ISQ Open Infrastructure Co LLC

Public companies file this within four business days when something important happens that investors should know about before the next quarterly report.

ISQ Open Infrastructure Co LLC filed this to release information to investors under Regulation FD — usually a press release, conference presentation, or other event the company considers important. htm NET ASSET VALUE AS OF APRIL 30, 2026 Exhibit 99. 1 Net Asset Value We calculate net asset value per share in accordance with valuation policies and procedures that have been approved by our board of directors.