Venrock Healthcare Capital Partners III, L.P.

13F Holdings History for Mersana Therapeutics, Inc. - Common Stock, par value $0.0001 per share (MRSN)

Symbol: MRSN on Nasdaq
Investment type: Equity / Common Stock, par value $0.0001 per share
Latest Disclosed Ownership: 3.57M shares
Security Ownership: 2.9%

Venrock Healthcare Capital Partners III, L.P. ownership in Mersana Therapeutics, Inc. Common Stock, par value $0.0001 per share (MRSN)

2025-05-15 - Venrock Healthcare Capital Partners III, L.P. has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 3.57M shares of Mersana Therapeutics, Inc. Common Stock, par value $0.0001 per share (MRSN). This represents 2.9% percent ownership of the company. In their previous filing dated 2025-02-14, Venrock Healthcare Capital Partners III, L.P. had reported owning 10.3M shares, indicating a decrease of -65.2% percent.

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filed at
Venrock Healthcare Capital Partners III, L.P.	2.9%	-67.5%	$1.07M	3.57M	-6,683,465	-65.2%	$0.30	13G/A	3/31/2025	15 May 2025 17:48:38
Venrock Healthcare Capital Partners III, L.P.	8.3%		$3.08M	10.3M			$0.30	13G/A	12/31/2024	14 Feb 2025 18:15:43