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 2021 vs. Q1 2021
How the institutions holding Mersana Therapeutics, Inc. changed between Q1 2021 and Q2 2021.
All holders in Q2 2021All holders in Q1 2021
| Measure | Q1 2021 | Q2 2021 | Change |
|---|---|---|---|
| Holders | 132 | 131 | −1 |
| Shares | 70.1M | 70.6M | +496.4K (+0.7%) |
| Value | $1.14B | $957.8M | −$186.5M (−16.3%) |
New holders (18)
Institutions that held Mersana Therapeutics, Inc. at the end of Q2 2021 but not at the end of Q1 2021.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Assenagon Asset Management S.A. | 1,040,942 | $14.1M | 0.06% |
| Maven Securities LTD | 84,469 | $1.17M | 0.12% |
| Hudson Bay Capital Management LP | 70,000 | $951.0K | 0.01% |
| Qube Research & Technologies Ltd | 62,685 | $851.0K | 0.01% |
| HighVista Strategies LLC | 59,906 | $814.0K | 0.58% |
| Walleye Capital LLC | 38,815 | $527.0K | 0.02% |
| Skandinaviska Enskilda Banken AB (publ) | 30,304 | $412.0K | 0.00% |
| Twinbeech Capital LP | 21,570 | $293.0K | 0.04% |
| ExodusPoint Capital Management, LP | 21,147 | $287.0K | 0.00% |
| Dynamic Technology Lab Private Ltd | 19,821 | $269.0K | 0.03% |
| Quantbot Technologies LP | 16,200 | $219.0K | 0.02% |
| Boothbay Fund Management, LLC | 16,071 | $218.0K | 0.01% |
| Walleye Trading LLC | 15,200 | $206.0K | 0.01% |
| XTX Topco Ltd | 14,541 | $197.0K | 0.07% |
| Amalgamated Bank | 12,021 | $163.0K | 0.00% |
| Bridgefront Capital, LLC | 11,236 | $153.0K | 0.06% |
| Tudor Investment Corp Et Al | 10,449 | $142.0K | 0.00% |
| Dark Forest Capital Management LP | 607 | $8.00K | 0.00% |
Sold out (19)
Institutions that held Mersana Therapeutics, Inc. at the end of Q1 2021 and filed for Q2 2021 without it.
| Institution | Shares, Q1 2021 | Value, Q1 2021 |
|---|---|---|
| Putnam Investments LLC | 720,800 | $11.7M |
| Acuta Capital Partners, LLC | 357,689 | $5.79M |
| Marshall Wace North America L.P. | 215,391 | $3.49M |
| Teacher Retirement System of Texas | 122,938 | $1.99M |
| California Public Employees Retirement System | 108,200 | $1.75M |
| First Trust Advisors LP | 59,685 | $966.0K |
| HRT Financial LP | 31,899 | $516.0K |
| Old Mission Capital LLC | 25,761 | $417.0K |
| Jump Financial, LLC | 25,332 | $409.0K |
| Balyasny Asset Management LLC | 19,636 | $318.0K |
| Victory Capital Management Inc | 18,877 | $305.0K |
| Ergoteles LLC | 13,600 | $220.0K |
| Quantitative Systematic Strategies LLC | 13,169 | $213.0K |
| SG Americas Securities, LLC | 12,496 | $202.0K |
| Alpine Global Management, LLC | 10,658 | $172.0K |
| Group One Trading, L.P. | 8,870 | $144.0K |
| Pacer Advisors, Inc. | 4,328 | $70.0K |
| Bank of Montreal | 1,511 | $24.0K |
| TCI Wealth Advisors, Inc. | 106 | $2.00K |