Braidwell LP

SEC CIK: 0001920938
Latest filing: Aug 14, 2026

SEC filings (opens in a new tab)

MRSN holding history

Mersana Therapeutics, Inc. in every 13F filed by Braidwell LP, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

MRSN overview All 13F holders of MRSN Full Q2 2026 holdings

Shares (Q2 2023): 0; Sold out in Q2 2023
Value: $0
% of portfolio: 0.0%
Quarters held: 2; Since Q4 2022

Holdings of MRSN by Braidwell LP, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2023	0	$0	0.0%	−3,355,805−100.0%	Sold out	Holders
Q1 2023	3,355,805	$13.8M	0.5%	+1,493,105+80.2%	Added	Holders
Q4 2022	1,862,700	$10.9M	0.4%	–	No prior filing	Holders