Mariner, LLC

SEC CIK: 0001373442
Latest filing: Aug 13, 2026

SEC filings (opens in a new tab)

MRSN holding history

Mersana Therapeutics, Inc. in every 13F filed by Mariner, LLC, 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 (Q3 2025): 0; Sold out in Q3 2025
Value: $0
% of portfolio: 0.0%
Quarters held: 2; Since Q1 2025

Holdings of MRSN by Mariner, LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q3 2025	0	$0	0.0%	−1,249−100.0%	Sold outConverted for a 1-for-25 split	Holders
Q2 2025	31,213	$9.24K	<0.1%	+10,463+50.4%	Added	Holders
Q1 2025	20,750	$7.14K	<0.1%	+20,750	New	Holders