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 2023 vs. Q3 2023
How the institutions holding Mersana Therapeutics, Inc. changed between Q3 2023 and Q4 2023.
All holders in Q4 2023All holders in Q3 2023
| Measure | Q3 2023 | Of which not filed for Q4 2023 | Q4 2023 | Change |
|---|---|---|---|---|
| Holders | 128 | 1 | 106 | −21 |
| Shares | 113.7M | 904.3K | 113.3M | +459.0K (+0.4%) |
| Value | $144.4M | $1.15M | $263.0M | +$119.7M (+83.6%) |
1 institution that held it in Q3 2023 haven't filed for Q4 2023 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 Q4 2023 but not at the end of Q3 2023.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Nextech Invest AG | 5,978,327 | $13.9M | 2.58% |
| Schonfeld Strategic Advisors LLC | 1,139,407 | $2.64M | 0.02% |
| Jacobs Levy Equity Management, Inc | 930,607 | $2.16M | 0.01% |
| Readystate Asset Management LP | 295,038 | $684.5K | 0.04% |
| Foundations Investment Advisors, LLC | 102,000 | $344.8K | 0.01% |
| Amundi | 95,540 | $308.6K | 0.00% |
| Susquehanna Portfolio Strategies, LLC | 93,878 | $217.8K | 0.00% |
| LPL Financial LLC | 76,694 | $177.9K | 0.00% |
| Man Group plc | 44,600 | $103.5K | 0.00% |
| Ameriprise Financial Inc | 41,004 | $95.1K | 0.00% |
| State Board of Administration of Florida Retirement System | 28,800 | $66.8K | 0.00% |
| Public Employees Retirement System of Ohio | 15,800 | $36.7K | 0.00% |
| Squarepoint Ops LLC | 13,668 | $31.7K | 0.00% |
| Victory Capital Management Inc | 12,732 | $29.5K | 0.00% |
| Bayesian Capital Management, LP | 11,900 | $27.6K | 0.00% |
| Quantbot Technologies LP | 10,945 | $25.4K | 0.00% |
| The PNC Financial Services Group, Inc. | 200 | $464 | 0.00% |
| Advisory Services Network, LLC | 100 | $232 | 0.00% |
| Farther Finance Advisors, LLC | 1 | $2 | 0.00% |
Sold out (40)
Institutions that held Mersana Therapeutics, Inc. at the end of Q3 2023 and filed for Q4 2023 without it.
Not filed for Q4 2023 yet (1)
Institutions that held Mersana Therapeutics, Inc. at the end of Q3 2023 and haven't filed a 13F for Q4 2023. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q3 2023 | Value, Q3 2023 |
|---|---|---|
| Decheng Capital Management III (Cayman), LLC | 904,268 | $1.15M |