Atlas Venture Fund X, L.P.

Holdings History for Disc Medicine, Inc. - Common Stock, $0.0001 par value per share (IRON)

Symbol: IRON on Nasdaq
Investment type: Equity / Common Stock, $0.0001 par value per share
Latest Disclosed Shares Owned: 813,167 shares
Security Ownership %: 2.2%

Atlas Venture Fund X, L.P. ownership in Disc Medicine, Inc. Common Stock, $0.0001 par value per share (IRON)

17 Dec 2025 - Atlas Venture Fund X, L.P. has filed an SCHEDULE 13D/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 813,167 shares of Disc Medicine, Inc. Common Stock, $0.0001 par value per share (IRON). This represents 2.2% ownership of the company. In their previous filing dated 15 Aug 2025, Atlas Venture Fund X, L.P. had reported owning 1,084,527 shares, indicating a decrease of +25%. .

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filing time
Atlas Venture Fund X, L.P.	2.2%	-30%	$73,469,638	813,167	-271,360	-25%	$90.35	13D/A	12 Dec 2025	17 Dec 2025, 20:07
Atlas Venture Fund X, L.P.	3.1%		$60,581,678	1,084,527			$55.86	13D/A	13 Aug 2025	15 Aug 2025, 19:16