Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- 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>>
Common stock purchase or sale:
| Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
| 2025-01-16 Sale | 2025-01-17 7:27 pm | Mersana Therapeutics Inc. | MRSN | Mandelia Ashish VP, Chief Accounting Officer | 3,554 | $0.58 | $2,061 | 161,687 (Direct) | View |
| 2025-01-16 Sale | 2025-01-17 7:26 pm | Mersana Therapeutics Inc. | MRSN | Protopapas Anna Director | 8,637 | $0.58 | $5,009 | 480,548 (Indirect Direct) | View |
| 2025-01-16 Sale | 2025-01-17 7:25 pm | Mersana Therapeutics Inc. | MRSN | Lowinger Timothy B SVP, Chief Sci.&Tech. Officer | 8,048 | $0.58 | $4,668 | 593,090 (Direct) | View |
| 2025-01-16 Sale | 2025-01-17 7:21 pm | Mersana Therapeutics Inc. | MRSN | Huber Martin H. Jr. President, CEO | 4,514 | $0.58 | $2,618 | 1,153,763 (Direct) | View |
| 2025-01-16 Sale | 2025-01-17 7:20 pm | Mersana Therapeutics Inc. | MRSN | DeSchuytner Brian SVP, COO & CFO | 8,470 | $0.58 | $4,913 | 508,893 (Direct) | View |
| 2025-01-16 Sale | 2025-01-17 7:18 pm | Mersana Therapeutics Inc. | MRSN | Carvajal Alejandra SVP, Chief Legal Officer | 5,096 | $0.58 | $2,956 | 413,713 (Direct) | View |
| 2025-01-16 Sale | 2025-01-17 7:18 pm | Mersana Therapeutics Inc. | MRSN | Bala Mohan SVP, Chief Development Officer | 5,939 | $0.58 | $3,445 | 456,372 (Direct) | View |
| 2025-01-15 Sale | 2025-01-16 5:25 pm | Mersana Therapeutics Inc. | MRSN | Protopapas Anna Director | 6,191 | $0.63 | $3,900 | 484,685 (Indirect Direct) | View |
| 2025-01-15 Sale | 2025-01-16 5:25 pm | Mersana Therapeutics Inc. | MRSN | Mandelia Ashish VP, Chief Accounting Officer | 1,791 | $0.63 | $1,128 | 57,171 (Direct) | View |
| 2025-01-15 Sale | 2025-01-16 5:24 pm | Mersana Therapeutics Inc. | MRSN | Lowinger Timothy B SVP, Chief Sci.&Tech. Officer | 1,794 | $0.63 | $1,130 | 250,721 (Direct) | View |
| 2025-01-15 Sale | 2025-01-16 5:23 pm | Mersana Therapeutics Inc. | MRSN | DeSchuytner Brian SVP, COO & CFO | 2,331 | $0.63 | $1,469 | 115,280 (Direct) | View |
| 2025-01-15 Sale | 2025-01-16 5:23 pm | Mersana Therapeutics Inc. | MRSN | Carvajal Alejandra SVP, Chief Legal Officer | 952 | $0.63 | $600 | 73,392 (Direct) | View |
| 2025-01-14 Sale | 2025-01-15 9:20 pm | Mersana Therapeutics Inc. | MRSN | Protopapas Anna Director | 11,534 | $0.66 | $7,612 | 519,876 (Indirect Direct) | View |
| 2025-01-14 Sale | 2025-01-15 9:19 pm | Mersana Therapeutics Inc. | MRSN | Mandelia Ashish VP, Chief Accounting Officer | 1,007 | $0.66 | $665 | 54,688 (Direct) | View |
| 2025-01-14 Sale | 2025-01-15 9:18 pm | Mersana Therapeutics Inc. | MRSN | Lowinger Timothy B SVP, Chief Sci.&Tech. Officer | 3,483 | $0.66 | $2,299 | 261,682 (Direct) | View |
| 2025-01-14 Sale | 2025-01-15 9:17 pm | Mersana Therapeutics Inc. | MRSN | DeSchuytner Brian SVP, COO & CFO | 3,713 | $0.66 | $2,451 | 125,111 (Direct) | View |
| 2025-01-14 Sale | 2025-01-15 9:17 pm | Mersana Therapeutics Inc. | MRSN | Carvajal Alejandra SVP, Chief Legal Officer | 3,330 | $0.66 | $2,198 | 87,261 (Direct) | View |
| 2025-01-14 Sale | 2025-01-15 9:16 pm | Mersana Therapeutics Inc. | MRSN | Bala Mohan SVP, Chief Development Officer | 3,253 | $0.66 | $2,147 | 77,728 (Direct) | View |
| 2024-10-28 Sale | 2024-10-29 4:43 pm | Mersana Therapeutics Inc. | MRSN | Bala Mohan SVP, Chief Development Officer | 1,884 | $1.9 | $3,580 | 60,981 (Direct) | View |
| 2024-10-02 Sale | 2024-10-07 5:48 pm | Mersana Therapeutics Inc. | MRSN | DeSchuytner Brian SVP, COO & CFO | 13,687 | $1.9836 | $27,150 | 94,824 (Direct) | View |
| 2024-10-02 Sale | 2024-10-07 5:48 pm | Mersana Therapeutics Inc. | MRSN | Carvajal Alejandra SVP, Chief Legal Officer | 13,687 | $1.9836 | $27,150 | 63,716 (Direct) | View |
| 2024-10-02 Sale | 2024-10-07 5:47 pm | Mersana Therapeutics Inc. | MRSN | Bala Mohan SVP, Chief Development Officer | 13,687 | $1.9836 | $27,150 | 50,365 (Direct) | View |
| 2024-10-02 Sale | 2024-10-07 5:47 pm | Mersana Therapeutics Inc. | MRSN | Mandelia Ashish VP, Chief Accounting Officer | 8,216 | $1.9836 | $16,298 | 47,757 (Direct) | View |
| 2024-10-02 Sale | 2024-10-07 5:46 pm | Mersana Therapeutics Inc. | MRSN | Lowinger Timothy B SVP, Chief Sci.&Tech. Officer | 13,687 | $1.9836 | $27,150 | 235,642 (Direct) | View |
| 2024-09-12 Sale | 2024-09-13 5:08 pm | Mersana Therapeutics Inc. | MRSN | Huber Martin H. Jr. President, CEO | 50,423 | $1.76 | $88,744 | 616,577 (Direct) | View |
| 2024-01-16 Sale | 2024-01-17 5:21 pm | Mersana Therapeutics Inc. | MRSN | Protopapas Anna Director | 29,399 | $2.71 | $79,671 | 586,160 (Indirect Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2025-01-15 Exercise | 2025-01-17 7:27 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Mandelia Ashish VP, Chief Accounting Officer | 8,685 | $0 | 161,687 (Direct) | View |
| 2025-01-15 Option Award | 2025-01-17 7:27 pm | N/A 2035-01-14 | Mersana Therapeutics Inc. | MRSN | Mandelia Ashish VP, Chief Accounting Officer | 91,667 | $0 | 161,687 (Direct) | View |
| 2025-01-15 Exercise | 2025-01-17 7:26 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Protopapas Anna Director | 21,250 | $0 | 480,548 (Direct) | View |
| 2025-01-15 Exercise | 2025-01-17 7:25 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Lowinger Timothy B SVP, Chief Sci.&Tech. Officer | 19,791 | $0 | 593,090 (Direct) | View |
| 2025-01-15 Option Award | 2025-01-17 7:25 pm | N/A 2035-01-14 | Mersana Therapeutics Inc. | MRSN | Lowinger Timothy B SVP, Chief Sci.&Tech. Officer | 297,917 | $0 | 593,090 (Direct) | View |
| 2025-01-15 Exercise | 2025-01-17 7:21 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Huber Martin H. Jr. President, CEO | 11,062 | $0 | 1,153,763 (Direct) | View |
| 2025-01-15 Option Award | 2025-01-17 7:21 pm | N/A 2035-01-14 | Mersana Therapeutics Inc. | MRSN | Huber Martin H. Jr. President, CEO | 997,700 | $0 | 1,153,763 (Direct) | View |
| 2025-01-15 Exercise | 2025-01-17 7:20 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | DeSchuytner Brian SVP, COO & CFO | 20,833 | $0 | 508,893 (Direct) | View |
| 2025-01-15 Option Award | 2025-01-17 7:20 pm | N/A 2035-01-14 | Mersana Therapeutics Inc. | MRSN | DeSchuytner Brian SVP, COO & CFO | 343,750 | $0 | 508,893 (Direct) | View |
| 2025-01-15 Exercise | 2025-01-17 7:18 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Carvajal Alejandra SVP, Chief Legal Officer | 12,500 | $0 | 413,713 (Direct) | View |
| 2025-01-15 Option Award | 2025-01-17 7:18 pm | N/A 2035-01-14 | Mersana Therapeutics Inc. | MRSN | Carvajal Alejandra SVP, Chief Legal Officer | 297,917 | $0 | 413,713 (Direct) | View |
| 2025-01-15 Exercise | 2025-01-17 7:18 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Bala Mohan SVP, Chief Development Officer | 14,583 | $0 | 456,372 (Direct) | View |
| 2025-01-15 Option Award | 2025-01-17 7:18 pm | N/A 2035-01-14 | Mersana Therapeutics Inc. | MRSN | Bala Mohan SVP, Chief Development Officer | 343,750 | $0 | 456,372 (Direct) | View |
| 2025-01-14 Exercise | 2025-01-16 5:25 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Protopapas Anna Director | 16,750 | $0 | 484,685 (Direct) | View |
| 2025-01-14 Exercise | 2025-01-16 5:25 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Mandelia Ashish VP, Chief Accounting Officer | 4,783 | $0 | 57,171 (Direct) | View |
| 2025-01-14 Exercise | 2025-01-16 5:24 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Lowinger Timothy B SVP, Chief Sci.&Tech. Officer | 4,792 | $0 | 250,721 (Direct) | View |
| 2025-01-14 Exercise | 2025-01-16 5:23 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | DeSchuytner Brian SVP, COO & CFO | 6,250 | $0 | 115,280 (Direct) | View |
| 2025-01-14 Exercise | 2025-01-16 5:23 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Carvajal Alejandra SVP, Chief Legal Officer | 2,500 | $0 | 73,392 (Direct) | View |
| 2025-01-13 Exercise | 2025-01-15 9:20 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Protopapas Anna Director | 31,250 | $0 | 519,876 (Direct) | View |
| 2025-01-13 Exercise | 2025-01-15 9:19 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Mandelia Ashish VP, Chief Accounting Officer | 2,646 | $0 | 54,688 (Direct) | View |
| 2025-01-13 Exercise | 2025-01-15 9:18 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Lowinger Timothy B SVP, Chief Sci.&Tech. Officer | 9,375 | $0 | 261,682 (Direct) | View |
| 2025-01-13 Exercise | 2025-01-15 9:17 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | DeSchuytner Brian SVP, COO & CFO | 10,000 | $0 | 125,111 (Direct) | View |
| 2025-01-13 Exercise | 2025-01-15 9:17 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Carvajal Alejandra SVP, Chief Legal Officer | 8,958 | $0 | 87,261 (Direct) | View |
| 2025-01-13 Exercise | 2025-01-15 9:16 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Bala Mohan SVP, Chief Development Officer | 8,750 | $0 | 77,728 (Direct) | View |
| 2025-01-02 Option Award | 2025-01-03 4:39 pm | N/A 2035-01-01 | Mersana Therapeutics Inc. | MRSN | Alleva Lawrence M Director | 12,521 | $0 | 12,521 (Direct) | View |
Ownership | 2024-12-30 4:12 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | NEXTECH CROSSOVER I SCSP Nextech Crossover I GP S.a r.l. Charoub Ian Constantinides Costas Sgobbo Rocco 10% Owner | 0 | $0 | 12,067,246 (Direct) | View |
| 2024-12-19 Other | 2024-12-23 7:42 pm | 2024-12-20 N/A | Mersana Therapeutics Inc. | MRSN | EcoR1 Capital LLC 10% Owner | 8,036,688 | $0 | 27,401,376 (Indirect) | View |
| 2024-10-25 Exercise | 2024-10-29 4:43 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Bala Mohan SVP, Chief Development Officer | 6,250 | $0 | 60,981 (Direct) | View |
| 2024-10-01 Exercise | 2024-10-07 5:48 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | DeSchuytner Brian SVP, COO & CFO | 50,000 | $0 | 94,824 (Direct) | View |
| 2024-10-01 Exercise | 2024-10-07 5:48 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Carvajal Alejandra SVP, Chief Legal Officer | 50,000 | $0 | 63,716 (Direct) | View |
| 2024-10-01 Exercise | 2024-10-07 5:47 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Bala Mohan SVP, Chief Development Officer | 50,000 | $0 | 50,365 (Direct) | View |
| 2024-10-01 Exercise | 2024-10-07 5:47 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Mandelia Ashish VP, Chief Accounting Officer | 30,000 | $0 | 47,757 (Direct) | View |
| 2024-10-01 Exercise | 2024-10-07 5:46 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Lowinger Timothy B SVP, Chief Sci.&Tech. Officer | 50,000 | $0 | 235,642 (Direct) | View |
| 2024-10-01 Option Award | 2024-10-03 8:08 pm | N/A 2034-09-30 | Mersana Therapeutics Inc. | MRSN | Alleva Lawrence M Director | 9,615 | $0 | 9,615 (Direct) | View |
| 2024-09-11 Exercise | 2024-09-13 5:08 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Huber Martin H. Jr. President, CEO | 166,750 | $0 | 616,577 (Direct) | View |
| 2024-07-01 Option Award | 2024-07-02 4:25 pm | N/A 2034-06-30 | Mersana Therapeutics Inc. | MRSN | Alleva Lawrence M Director | 8,972 | $0 | 8,972 (Direct) | View |
| 2024-06-11 Option Award | 2024-06-12 5:31 pm | N/A 2034-06-10 | Mersana Therapeutics Inc. | MRSN | Hack Andrew A. F. Director | 55,000 | $0 | 55,000 (Direct) | View |
| 2024-06-11 Option Award | 2024-06-12 4:54 pm | N/A 2034-06-10 | Mersana Therapeutics Inc. | MRSN | Protopapas Anna Director | 55,000 | $0 | 55,000 (Direct) | View |
| 2024-06-11 Option Award | 2024-06-12 4:53 pm | N/A 2034-06-10 | Mersana Therapeutics Inc. | MRSN | MOTT DAVID M Director | 55,000 | $0 | 55,000 (Direct) | View |
| 2024-06-11 Option Award | 2024-06-12 4:52 pm | N/A 2034-06-10 | Mersana Therapeutics Inc. | MRSN | Hege Kristen Director | 55,000 | $0 | 55,000 (Direct) | View |
| 2024-06-11 Option Award | 2024-06-12 4:51 pm | N/A 2034-06-10 | Mersana Therapeutics Inc. | MRSN | Diaz Allene M. Director | 55,000 | $0 | 55,000 (Direct) | View |
| 2024-06-11 Option Award | 2024-06-12 4:51 pm | N/A 2034-06-10 | Mersana Therapeutics Inc. | MRSN | Dere Willard H Director | 55,000 | $0 | 55,000 (Direct) | View |
| 2024-06-11 Option Award | 2024-06-12 4:49 pm | N/A 2034-06-10 | Mersana Therapeutics Inc. | MRSN | Alleva Lawrence M Director | 55,000 | $0 | 55,000 (Direct) | View |
| 2024-04-01 Option Award | 2024-04-03 8:14 pm | N/A 2034-03-31 | Mersana Therapeutics Inc. | MRSN | Alleva Lawrence M Director | 3,996 | $0 | 3,996 (Direct) | View |
| 2024-01-13 Exercise | 2024-01-17 5:21 pm | N/A N/A | Mersana Therapeutics Inc. | MRSN | Protopapas Anna Director | 86,958 | $0 | 586,160 (Direct) | View |