Mersana Therapeutics, Inc.
MRSNDelisted Jan 6, 2026- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001442836
Mersana Therapeutics, Inc. was delisted on Jan 6, 2026; its insiders filed their last Form 4 on Jan 6, 2026; 51 institutions reported holding it in 13F filings for Q4 2025, worth $64.8M in total; no superinvestor held it.
Q2 2025 vs. Q1 2025
How the institutions holding Mersana Therapeutics, Inc. changed between Q1 2025 and Q2 2025.
All holders in Q2 2025All holders in Q1 2025
| Measure | Q1 2025 | Q2 2025 | Change |
|---|---|---|---|
| Holders | 111 | 85 | −26 |
| Shares | 87.8M | 77.4M | −10.4M (−11.9%) |
| Value | $30.2M | $22.9M | −$7.31M (−24.2%) |
New holders (14)
Institutions that held Mersana Therapeutics, Inc. at the end of Q2 2025 but not at the end of Q1 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Millennium Management LLC | 2,090,235 | $618.7K | 0.00% |
| Luminus Management LLC | 1,039,314 | $307.6K | 0.08% |
| Jane Street Group, LLC | 511,182 | $151.3K | 0.00% |
| Gsa Capital Partners LLP | 471,681 | $140.0K | 0.01% |
| Marshall Wace, LLP | 226,971 | $68.1K | 0.00% |
| Jain Global LLC | 96,154 | $28.5K | 0.00% |
| Point72 Asia (Singapore) Pte. Ltd. | 75,151 | $22.2K | 0.00% |
| Callan Family Office, LLC | 56,559 | $16.7K | 0.00% |
| R Squared Ltd | 47,229 | $14.0K | 0.01% |
| Two Sigma Securities, LLC | 17,566 | $5.20K | 0.00% |
| Jump Financial, LLC | 11,323 | $3.35K | 0.00% |
| ExodusPoint Capital Management, LP | 11,434 | $3.00K | 0.00% |
| Essential Partners LLC | 5,405 | $1.60K | 0.00% |
| IFP Advisors, Inc | 677 | $201 | 0.00% |
Sold out (40)
Institutions that held Mersana Therapeutics, Inc. at the end of Q1 2025 and filed for Q2 2025 without it.