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 2022 vs. Q1 2022
How the institutions holding Mersana Therapeutics, Inc. changed between Q1 2022 and Q2 2022.
All holders in Q2 2022All holders in Q1 2022
| Measure | Q1 2022 | Of which not filed for Q2 2022 | Q2 2022 | Change |
|---|---|---|---|---|
| Holders | 128 | 2 | 126 | 0 |
| Shares | 80.9M | 40.6K | 88.3M | +7.48M (+9.2%) |
| Value | $322.7M | $162.0K | $408.0M | +$85.4M (+26.5%) |
2 institutions that held it in Q1 2022 haven't filed for Q2 2022 yet. Not filing isn't selling, so the changes leave them out.
New holders (19)
Institutions that held Mersana Therapeutics, Inc. at the end of Q2 2022 but not at the end of Q1 2022.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Woodline Partners LP | 3,161,576 | $14.6M | 0.24% |
| Silverarc Capital Management, LLC | 850,000 | $3.93M | 1.84% |
| UBS Oconnor LLC | 491,048 | $2.27M | 0.02% |
| Graham Capital Management, L.P. | 203,067 | $938.0K | 0.04% |
| Kennedy Capital Management, Inc. | 88,402 | $408.0K | 0.01% |
| Caxton Associates LP | 47,915 | $221.0K | 0.03% |
| SG Americas Securities, LLC | 47,555 | $220.0K | 0.00% |
| Cornercap Investment Counsel Inc | 40,477 | $187.0K | 0.03% |
| Prudential Financial Inc | 39,695 | $183.0K | 0.00% |
| Partners Group Holding AG | 37,473 | $173.0K | 0.01% |
| Mirae Asset Global Investments Co., Ltd. | 22,616 | $104.0K | 0.00% |
| HSBC Holdings PLC | 18,737 | $85.0K | 0.00% |
| SEI Investments Co | 17,256 | $80.0K | 0.00% |
| Washington University | 9,367 | $43.0K | 0.02% |
| PEAK6 Investments LLC | 5,000 | $16.4K | 0.00% |
| Dark Forest Capital Management LP | 311 | $1.00K | 0.00% |
| Capital Advisors, Ltd. LLC | 71 | $0 | 0.00% |
| Ellevest, Inc. | 57 | $0 | 0.00% |
| Parallel Advisors, LLC | 78 | $0 | 0.00% |
Sold out (19)
Institutions that held Mersana Therapeutics, Inc. at the end of Q1 2022 and filed for Q2 2022 without it.
| Institution | Shares, Q1 2022 | Value, Q1 2022 |
|---|---|---|
| CIBC Asset Management Inc | 1,055,994 | $4.21M |
| Rho Capital Partners Inc | 796,458 | $3.18M |
| Federated Hermes, Inc. | 723,933 | $2.89M |
| Pinz Capital Management, LP | 400,000 | $1.60M |
| HRT Financial LP | 176,078 | $702.0K |
| Jane Street Group, LLC | 143,321 | $572.0K |
| Tudor Investment Corp Et Al | 67,991 | $271.0K |
| Jump Financial, LLC | 67,500 | $269.0K |
| Walleye Trading LLC | 61,525 | $245.0K |
| Man Group plc | 57,000 | $227.0K |
| Schonfeld Strategic Advisors LLC | 52,900 | $211.0K |
| Marshall Wace, LLP | 32,667 | $130.0K |
| Point72 Hong Kong Ltd | 14,280 | $57.0K |
| Virtu Financial LLC | 13,274 | $53.0K |
| Teacher Retirement System of Texas | 11,902 | $47.0K |
| Alpine Global Management, LLC | 10,025 | $40.0K |
| Engineers Gate Manager LP | 10,128 | $40.0K |
| Signaturefd, LLC | 784 | $3.00K |
| Lindbrook Capital, LLC | 659 | $3.00K |
Not filed for Q2 2022 yet (2)
Institutions that held Mersana Therapeutics, Inc. at the end of Q1 2022 and haven't filed a 13F for Q2 2022. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q1 2022 | Value, Q1 2022 |
|---|---|---|
| Parametric Portfolio Associates LLC | 29,837 | $119.0K |
| Amalgamated Financial Corp. | 10,790 | $43.0K |