List of insiders holdings for Mersana Therapeutics Inc.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| NEXTECH CROSSOVER I SCSP Nextech Crossover I GP S.a r.l. Charoub Ian Constantinides Costas Sgobbo Rocco 10% Owner | 2024-12-30 16:12:17 | 12,067,246 0 | 12,067,246 | Form 3 |
| EcoR1 Capital LLC 10% Owner | 2024-12-23 19:50:22 | 11,578,447 0 | 11,578,447 | Form 13G |
| BARRETT M JAMES 10% Owner | 2017-07-06 17:16:28 | 0 8,140,138 | 8,140,138 | Form 4 |
| Viswanathan Ravi 10% Owner | 2017-07-06 17:20:30 | 0 8,140,138 | 8,140,138 | Form 4 |
| NEA Partners 14 L.P. NEA 14 GP LTD 10% Owner | 2020-09-16 16:43:08 | 40,000 7,959,520 | 7,999,520 | Form 4 |
| Florence Anthony A. Jr. 10% Owner | 2020-09-16 16:45:35 | 4,285 2,080,520 | 2,084,805 | Form 4 |
| BASKETT FOREST 10% Owner | 2020-09-16 16:44:18 | 0 2,073,464 | 2,073,464 | Form 4 |
| SANDELL SCOTT D 10% Owner | 2020-09-16 16:47:36 | 0 2,072,194 | 2,072,194 | Form 4 |
| KERINS PATRICK J 10% Owner | 2020-09-16 16:46:35 | 4,796 2,060,000 | 2,064,796 | Form 4 |
| Sonsini Peter W. 10% Owner | 2020-09-16 16:48:25 | 993 2,061,192 | 2,062,185 | Form 4 |
| Huber Martin H. Jr. President, CEO | 2025-01-17 19:21:15 | 1,153,763 0 | 1,153,763 | Form 4 |
| FMR LLC See Remark 1 | 2018-02-13 09:40:30 | 884,015 0 | 884,015 | Form 13G |
| Lowinger Timothy B SVP, Chief Sci.&Tech. Officer | 2025-01-17 19:25:05 | 593,090 0 | 593,090 | Form 4 |
| DeSchuytner Brian SVP, COO & CFO | 2025-01-17 19:20:02 | 508,893 0 | 508,893 | Form 4 |
| Protopapas Anna Director | 2025-01-17 19:26:45 | 168,041 312,507 | 480,548 | Form 4 |
| Bala Mohan SVP, Chief Development Officer | 2025-01-17 19:18:07 | 456,372 0 | 456,372 | Form 4 |
| Carvajal Alejandra SVP, Chief Legal Officer | 2025-01-17 19:18:50 | 413,713 0 | 413,713 | Form 4 |
| Yang Arvin SVP, Chief Medical Officer | 2023-01-18 20:29:00 | 317,903 0 | 317,903 | Form 4 |
| MISRA TUSHAR SVP, Chief Manuf. Officer | 2024-01-17 17:21:21 | 271,299 0 | 271,299 | Form 4 |
| Mandelia Ashish VP, Chief Accounting Officer | 2025-01-17 19:27:39 | 161,687 0 | 161,687 | Form 4 |
| Huebner Dirk Chief Medical Officer | 2020-01-16 16:34:44 | 100,833 0 | 100,833 | Form 4 |
| Spellman David A Chief Financial Officer | 2019-01-25 16:07:18 | 100,000 0 | 100,000 | Form 4 |
| Bergstrom Donald A Chief Medical Officer | 2018-02-06 16:24:35 | 56,884 0 | 56,884 | Form 4 |
| Dere Willard H Director | 2024-06-12 16:51:05 | 55,000 0 | 55,000 | Form 4 |
| Diaz Allene M. Director | 2024-06-12 16:51:43 | 55,000 0 | 55,000 | Form 4 |
| Hege Kristen Director | 2024-06-12 16:52:46 | 55,000 0 | 55,000 | Form 4 |
| MOTT DAVID M Director | 2024-06-12 16:53:31 | 55,000 0 | 55,000 | Form 4 |
| Hack Andrew A. F. Director | 2024-06-12 17:31:06 | 55,000 0 | 55,000 | Form 4 |
| Jack Eva M. Chief Bus. Officer, Tres, Sec. | 2020-09-16 18:31:22 | 35,248 0 | 35,248 | Form 4 |
| Kaufman Michael J. Chief Manufacturing Officer | 2021-07-19 20:50:21 | 32,622 0 | 32,622 | Form 4 |
| Foster Wayne Vice President of Finance | 2019-01-25 16:05:05 | 30,750 0 | 30,750 | Form 4 |
| Alleva Lawrence M Director | 2025-01-03 16:39:05 | 12,521 0 | 12,521 | Form 4 |
| Nayeem Sara M. Director | 2018-01-04 16:31:30 | 3,560 0 | 3,560 | Form 4 |
| New Enterprise Associates 14 L.P. 10% Owner | 2020-12-10 13:17:31 | 0 0 | 0 | Form 13D |
| New Enterprise Associates 14 L.P. Sonsini Peter W. NEA 14 GP LTD NEA Partners 14 L.P. BARRIS PETER J BASKETT FOREST Florence Anthony A. Jr. KERINS PATRICK J SANDELL SCOTT D 10% Owner | 2020-12-10 13:17:31 | 0 0 | 0 | Form 13D |
| Jones Elaine V Director | 2017-06-27 19:36:06 | 0 0 | 0 | Form 3 |