MRSN — MERSANA THERAPEUTICS INC

Ownership history in LUMINUS MANAGEMENT LLC  ·  2 quarters on record

This page tracks every 13F SEC filing in which LUMINUS MANAGEMENT LLC reported a position in MERSANA THERAPEUTICS INC (MRSN). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
0.35% (2025 Q3)
Avg. % of fund
0.21%
First filed
2025 Q2
Last filed
2025 Q3
Quarters held
2
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q3 REDUCED 50,000 -989,314 -95.2% 0.35% $388K —
2025 Q2 INITIATED 1,039,314 — — 0.08% $308K —
% of Fund (quarterly)

Other funds also holding MRSN

As of 2025 Q4 — sorted by position size

Rangeley Capital, LLC 1.37% Bain Capital Life Sciences Investors, LLC 3Y 7Y 0.77% Yakira Capital Management, Inc. 3Y 7Y 0.32% EQUITEC PROPRIETARY MARKETS, LLC 3Y 7Y 0.25% Rock Springs Capital Management LP 3Y 7Y 0.23% Knott David M Jr 3Y 0.2% Affinity Asset Advisors, LLC 3Y 0.16% EQUITEC PROPRIETARY MARKETS, LLC 3Y 7Y 0.09% DELTEC ASSET MANAGEMENT LLC 3Y 7Y 0.09% Lion Point Capital, LP 3Y 7Y 0.01%
← Back to LUMINUS MANAGEMENT LLC Holdings