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, Q1 2022
Institutional positions in Mersana Therapeutics, Inc. as of Mar 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
- 128
- +6 vs. Q4 2021
- Shares held
- 80.9M
- +10.7M (+15.2%) vs. Q4 2021
- Total value
- $322.7M
- −$113.9M (−26.1%) vs. Q4 2021
- New holders
- 21
- 49 more added
- Sold out
- 15
- 38 more reduced
Compare with Q4 2021: 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, Q1 2022
Shares, value and share of portfolio for each institution holding Mersana Therapeutics, Inc.; share changes are against Q4 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Teacher Retirement System of Texas | 11,902 | $47.0K | 0.00% | +1,083+10.0% | Added |
| Janus Henderson Group PLC | 11,198 | $45.0K | 0.00% | −9−0.1% | Reduced |
| Principal Financial Group Inc | 11,169 | $45.0K | 0.00% | +658+6.3% | Added |
| AXA S.A. | 10,800 | $43.1K | 0.00% | −137,200−92.7% | Reduced |
| Amalgamated Bank | 10,790 | $43.0K | 0.00% | −846−7.3% | Reduced |
| Amalgamated Financial Corp. | 10,790 | $43.0K | 0.00% | +10,790 | New |
| Engineers Gate Manager LP | 10,128 | $40.0K | 0.00% | −10,372−50.6% | Reduced |
| Alpine Global Management, LLC | 10,025 | $40.0K | 0.01% | −5,814−36.7% | Reduced |
| XTX Topco Ltd | 10,086 | $40.0K | 0.02% | −1,554−13.4% | Reduced |
| Empirical Asset Management, LLC | 10,000 | $40.0K | 0.04% | 00.0% | Unchanged |
| Quantbot Technologies LP | 9,354 | $37.0K | 0.00% | +9,354 | New |
| Ensign Peak Advisors, Inc | 9,040 | $36.0K | 0.00% | 00.0% | Unchanged |
| Victory Capital Management Inc | 10,262 | $36.0K | 0.00% | +10,262 | New |
| Tower Research Capital LLC (TRC) | 8,425 | $34.0K | 0.00% | −11,421−57.5% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 7,262 | $29.0K | 0.00% | −2,564−26.1% | Reduced |
| Citigroup Inc | 6,358 | $25.0K | 0.00% | −220,674−97.2% | Reduced |
| Ameritas Investment Partners, Inc. | 5,400 | $22.0K | 0.00% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 4,758 | $19.0K | 0.00% | −4,764−50.0% | Reduced |
| Royal Bank of Canada | 4,397 | $18.0K | 0.00% | −10,701−70.9% | Reduced |
| Great West Life Assurance Co | 3,638 | $15.0K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 3,117 | $12.0K | 0.00% | +2,240+255.4% | Added |
| STRS Ohio | 2,500 | $9.00K | 0.00% | 00.0% | Unchanged |
| Cutler Group LP | 1,200 | $4.00K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 784 | $3.00K | 0.00% | +784 | New |
| Lindbrook Capital, LLC | 659 | $3.00K | 0.00% | +659 | New |
| Daiwa Securities Group Inc. | 246 | $1.00K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 263 | $1.00K | 0.00% | −95−26.5% | Reduced |
| North Star Investment Management Corp. | 150 | $1.00K | 0.00% | 00.0% | Unchanged |
| Assenagon Asset Management S.A. | 0 | $0 | 0.00% | −1,073,748−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −818,100−100.0% | Sold out |
| Rafferty Asset Management, LLC | 0 | $0 | 0.00% | −278,798−100.0% | Sold out |
| Nomura Holdings Inc | 0 | $0 | 0.00% | −97,865−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −84,616−100.0% | Sold out |
| Teachers Retirement System of the State of Kentucky | 0 | $0 | 0.00% | −47,980−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −41,317−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −25,102−100.0% | Sold out |
| Truist Financial Corp | 0 | $0 | 0.00% | −16,700−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −16,263−100.0% | Sold out |
| Bridgefront Capital, LLC | 0 | $0 | 0.00% | −15,622−100.0% | Sold out |
| Dark Forest Capital Management LP | 0 | $0 | 0.00% | −7,421−100.0% | Sold out |
| Parallel Advisors, LLC | 0 | $0 | 0.00% | −1,276−100.0% | Sold out |
| The PNC Financial Services Group, Inc. | 0 | $0 | 0.00% | −478−100.0% | Sold out |
| CWM, LLC | 0 | $0 | 0.00% | −109−100.0% | Sold out |