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.
13F holders, Q4 2022
Institutional positions in Mersana Therapeutics, Inc. as of Dec 31, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 152
- 0 vs. Q3 2022
- Shares held
- 101.2M
- +8.95M (+9.7%) vs. Q3 2022
- Total value
- $592.8M
- −$30.6M (−4.9%) vs. Q3 2022
- New holders
- 20
- 68 more added
- Sold out
- 20
- 37 more reduced
Compare with Q3 2022: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MRSN on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 0 | $0 |
| Q1 2026 | 1 | $87 |
| Q4 2025 | 51 | $64.8M |
| Q3 2025 | 49 | $24.7M |
| Q2 2025 | 85 | $22.9M |
| Q1 2025 | 111 | $30.2M |
| Q4 2024 | 132 | $149.2M |
| Q3 2024 | 116 | $219.4M |
| Q2 2024 | 122 | $229.6M |
| Q1 2024 | 125 | $526.3M |
| Q4 2023 | 106 | $263.0M |
| Q3 2023 | 128 | $144.4M |
| Q2 2023 | 147 | $370.2M |
| Q1 2023 | 158 | $437.2M |
| Q4 2022 | 152 | $592.8M |
| Q3 2022 | 152 | $623.4M |
| Q2 2022 | 126 | $408.0M |
| Q1 2022 | 128 | $322.7M |
| Q4 2021 | 122 | $436.6M |
| Q3 2021 | 110 | $648.3M |
| Q2 2021 | 131 | $957.8M |
| Q1 2021 | 132 | $1.14B |
Institutions, Q4 2022
Shares, value and share of portfolio for each institution holding Mersana Therapeutics, Inc.; share changes are against Q3 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Invesco Ltd. | 33,273 | $195.0K | 0.00% | −528,001−94.1% | Reduced |
| Delphia (USA) Inc. | 33,037 | $193.6K | 0.22% | +18,309+124.3% | Added |
| Gsa Capital Partners LLP | 32,241 | $189.0K | 0.02% | −134,751−80.7% | Reduced |
| State Board of Administration of Florida Retirement System | 27,402 | $160.6K | 0.00% | +110+0.4% | Added |
| Ameriprise Financial Inc | 27,044 | $158.0K | 0.00% | −326−1.2% | Reduced |
| Fox Run Management, L.L.C. | 24,652 | $144.5K | 0.06% | +12,567+104.0% | Added |
| Dynamic Technology Lab Private Ltd | 24,533 | $144.0K | 0.01% | −7,165−22.6% | Reduced |
| Teacher Retirement System of Texas | 23,612 | $138.0K | 0.00% | −1,902−7.5% | Reduced |
| Prio Wealth Limited Partnership | 23,529 | $137.9K | 0.01% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 23,409 | $137.2K | 0.00% | +2,007+9.4% | Added |
| Jasper Ridge Partners, L.P. | 23,100 | $135.4K | 0.01% | 00.0% | Unchanged |
| Boulder Hill Capital Management LP | 23,000 | $134.8K | 0.11% | +23,000 | New |
| Arizona State Retirement System | 21,935 | $128.5K | 0.00% | +849+4.0% | Added |
| Principal Financial Group Inc | 21,867 | $128.1K | 0.00% | +2,947+15.6% | Added |
| E Fund Management Co., Ltd. | 21,844 | $128.0K | 0.01% | +7,149+48.6% | Added |
| Bank of Montreal | 16,704 | $119.3K | 0.00% | +35+0.2% | Added |
| ProShare Advisors LLC | 20,161 | $118.1K | 0.00% | +2,051+11.3% | Added |
| Virtus ETF Advisers LLC | 19,618 | $115.0K | 0.06% | −15,430−44.0% | Reduced |
| Raymond James & Associates | 19,431 | $113.9K | 0.00% | +19,431 | New |
| Public Employees Retirement System of Ohio | 18,175 | $107.0K | 0.00% | −4,125−18.5% | Reduced |
| Man Group plc | 15,963 | $93.5K | 0.00% | +15,963 | New |
| Grimes & Company, Inc. | 15,267 | $89.5K | 0.00% | +95+0.6% | Added |
| Two Sigma Securities, LLC | 15,226 | $89.2K | 0.01% | +15,226 | New |
| Royal Bank of Canada | 13,165 | $76.0K | 0.00% | +10,376+372.0% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 12,247 | $71.8K | 0.00% | +4,985+68.6% | Added |
| Martingale Asset Management L P | 12,110 | $71.0K | 0.00% | 00.0% | Unchanged |
| ExodusPoint Capital Management, LP | 11,799 | $69.0K | 0.00% | −145,612−92.5% | Reduced |
| Amalgamated Bank | 11,816 | $69.0K | 0.00% | +365+3.2% | Added |
| Pictet Asset Management SA | 11,490 | $67.0K | 0.00% | +11,490 | New |
| Janus Henderson Group PLC | 11,341 | $66.5K | 0.00% | −10.0% | Reduced |
| HRT Financial LP | 11,210 | $65.0K | 0.00% | −101,603−90.1% | Reduced |
| Empirical Asset Management, LLC | 10,000 | $58.6K | 0.06% | 00.0% | Unchanged |
| Point72 Middle East FZE | 9,566 | $56.1K | 0.00% | +9,566 | New |
| Ameritas Investment Partners, Inc. | 7,067 | $46.1K | 0.00% | 00.0% | Unchanged |
| Balyasny Asset Management LLC | 6,597 | $38.7K | 0.00% | −56,930−89.6% | Reduced |
| Metropolitan Life Insurance Co | 6,508 | $38.1K | 0.00% | +1,750+36.8% | Added |
| Advisor Group Holdings, Inc. | 3,235 | $19.0K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 3,090 | $18.0K | 0.00% | +1,845+148.2% | Added |
| Dorsey Wright & Associates | 2,988 | $17.5K | 0.01% | +2,988 | New |
| STRS Ohio | 2,500 | $14.0K | 0.00% | 00.0% | Unchanged |
| Cutler Group LP | 1,200 | $7.00K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 1,014 | $5.94K | 0.00% | +104+11.4% | Added |
| Nisa Investment Advisors, LLC | 610 | $4.00K | 0.00% | −82−11.8% | Reduced |
| Lindbrook Capital, LLC | 445 | $2.61K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 401 | $2.00K | 0.00% | +155+63.0% | Added |
| Steward Partners Investment Advisory, LLC | 225 | $1.32K | 0.00% | +225 | New |
| Allspring Global Investments Holdings, LLC | 154 | $902 | 0.00% | 00.0% | Unchanged |
| North Star Investment Management Corp. | 150 | $879 | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 78 | $457 | 0.00% | 00.0% | Unchanged |
| Ellevest, Inc. | 57 | $334 | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 500 | $3 | 0.00% | +500 | New |
| Capital Advisors, Ltd. LLC | 71 | $0 | 0.00% | 00.0% | Unchanged |
| UBS Oconnor LLC | 0 | $0 | 0.00% | −376,496−100.0% | Sold out |
| Resolute Capital Asset Partners LLC | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −86,151−100.0% | Sold out |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −34,771−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −33,416−100.0% | Sold out |
| Ergoteles LLC | 0 | $0 | 0.00% | −32,161−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −25,521−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −25,104−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −24,975−100.0% | Sold out |
| Ensign Peak Advisors, Inc | 0 | $0 | 0.00% | −22,330−100.0% | Sold out |
| SEI Investments Co | 0 | $0 | 0.00% | −20,303−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −16,312−100.0% | Sold out |
| Point72 Hong Kong Ltd | 0 | $0 | 0.00% | −15,156−100.0% | Sold out |
| Cipher Capital LP | 0 | $0 | 0.00% | −12,058−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −11,959−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −1,800−100.0% | Sold out |
| Wells Fargo & Company | 0 | $0 | 0.00% | −1,561−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −742−100.0% | Sold out |
| Signaturefd, LLC | 0 | $0 | 0.00% | −165−100.0% | Sold out |
| US Bancorp | 0 | $0 | 0.00% | −52−100.0% | Sold out |