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.
Q4 2025 vs. Q3 2025
How the institutions holding Mersana Therapeutics, Inc. changed between Q3 2025 and Q4 2025.
All holders in Q4 2025All holders in Q3 2025
| Measure | Q3 2025 | Q4 2025 | Change |
|---|---|---|---|
| Holders | 49 | 51 | +2 |
| Shares | 3.18M | 2.24M | −939.5K (−29.5%) |
| Value | $24.7M | $64.8M | +$40.1M (+162.4%) |
New holders (18)
Institutions that held Mersana Therapeutics, Inc. at the end of Q4 2025 but not at the end of Q3 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Affinity Asset Advisors, LLC | 100,000 | $2.89M | 0.21% |
| Groupe la Francaise | 61,488 | $1.78M | 0.03% |
| Rangeley Capital, LLC | 57,098 | $1.65M | 1.42% |
| Gabelli Funds LLC | 47,300 | $1.37M | 0.01% |
| Credit Industriel Et Commercial | 41,392 | $1.20M | 0.17% |
| Yakira Capital Management, Inc. | 32,663 | $944.9K | 0.32% |
| Citadel Advisors LLC | 22,493 | $650.7K | 0.00% |
| Deltec Asset Management LLC | 18,000 | $520.7K | 0.09% |
| Knott David M Jr | 111,686 | $437.8K | 0.20% |
| XTX Topco Ltd | 11,948 | $345.7K | 0.01% |
| Point72 Asset Management, L.P. | 10,364 | $299.8K | 0.00% |
| Gamco Investors, Inc. Et Al | 10,000 | $289.3K | 0.00% |
| Northern Trust Corp | 8,586 | $248.4K | 0.00% |
| Omers Administration Corp | 7,900 | $228.5K | 0.00% |
| Equitec Proprietary Markets, LLC | 5,593 | $161.8K | 0.78% |
| Mint Tower Capital Management B.V. | 1,035 | $30.0K | 0.00% |
| Flagship Harbor Advisors, LLC | 76 | $2.20K | 0.00% |
| SHP Wealth Management | 25 | $723 | 0.00% |
Sold out (16)
Institutions that held Mersana Therapeutics, Inc. at the end of Q3 2025 and filed for Q4 2025 without it.
| Institution | Shares, Q3 2025 | Value, Q3 2025 |
|---|---|---|
| Schonfeld Strategic Advisors LLC | 273,579 | $2.12M |
| Silverarc Capital Management, LLC | 133,636 | $1.04M |
| 683 Capital Management, LLC | 100,000 | $776.0K |
| Renaissance Technologies LLC | 88,465 | $686.5K |
| 5AM Venture Management, LLC | 52,200 | $405.1K |
| Luminus Management LLC | 50,000 | $388.0K |
| Two Sigma Advisers, LP | 40,640 | $315.4K |
| Two Sigma Investments, LP | 30,688 | $238.1K |
| DRW Securities, LLC | 13,851 | $107.5K |
| Voleon Capital Management LP | 13,200 | $102.4K |
| China Universal Asset Management Co., Ltd. | 875 | $6.79K |
| Barclays PLC | 198 | $1.54K |
| Mirae Asset Global Investments Co., Ltd. | 193 | $1.50K |
| SRS Capital Advisors, Inc. | 157 | $1.22K |
| Citigroup Inc | 106 | $823 |
| GF Fund Management Co. Ltd. | 94 | $729 |