TCG Crossover GP I, LLC

Holdings History for Upstream Bio, Inc. - Common Stock, par value $0.001 per share (UPB)

Symbol: UPB on Nasdaq
Investment type: Equity / Common Stock, par value $0.001 per share
Latest Disclosed Shares Owned: 2,117,103 shares
Security Ownership %: 3.9%

TCG Crossover GP I, LLC ownership in Upstream Bio, Inc. Common Stock, par value $0.001 per share (UPB)

14 Nov 2025 - TCG Crossover GP I, LLC has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 2,117,103 shares of Upstream Bio, Inc. Common Stock, par value $0.001 per share (UPB). This represents 3.9% ownership of the company. In their previous filing dated 14 Feb 2025, TCG Crossover GP I, LLC had reported owning 2,801,763 shares, indicating a decrease of +24%. .

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filing time
TCG Crossover GP I, LLC	3.9%	-26%	$39,822,919	2,117,103	-684,660	-24%	$18.81	13G/A	30 Sep 2025	14 Nov 2025, 16:27
TCG Crossover GP I, LLC	5.2%		$25,159,832	2,801,763			$8.98	13G	31 Dec 2024	14 Feb 2025, 16:23