BlackRock Portfolio Management LLC - Sep 5, 2025 SCHEDULE 13D/A Report for MediaCo Holding Inc. Class A common stock, par value $0.01 per share (MDIA)

Filing Manager: BlackRock Portfolio Management LLC
Reporting Manager: BlackRock Portfolio Management LLC
Security: MediaCo Holding Inc. Class A common stock, par value $0.01 per share
Symbol: MDIA
Shares outstanding: 76.5M shares
Disclosed Ownership: 35.3M shares
Ownership: 46.1%
Form type: SCHEDULE 13D/A
Date filed: 9/8/2025, 04:05 PM
Date of event: Sep 5, 2025
Previous filing: Jul 3, 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
BlackRock Portfolio Management LLC	46.1%	35.3M	35.3M	0	/s/ Joseph Virgilio	Joseph Virgilio, Attorney-in-Fact	0002052113