Insider Holders & Insider Ownership - Mersana Therapeutics Inc. (MRSN)

List of insiders holdings for Mersana Therapeutics Inc.:
  1. Shares directly owned by the insider.
  2. Shares indirectly owned by the insider.
  3. Total shares owned by the insider (sum of shares directly and indirectly owned).
  4. Total market value if available.
  5. 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
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Insider Holder NameReport
Date Time
Shares Owned
Directly
Indirectly
Total
Shares Owned
Filing
EcoR1 Capital LLC
10% Owner
2023-07-31 13:55:450
19,364,688
19,364,688Form 3
BARRETT M JAMES
10% Owner
2017-07-06 17:16:280
8,140,138
8,140,138Form 4
Viswanathan Ravi
10% Owner
2017-07-06 17:20:300
8,140,138
8,140,138Form 4
NEA Partners 14 L.P.
NEA 14 GP LTD
10% Owner
2020-09-16 16:43:0840,000
7,959,520
7,999,520Form 4
Florence Anthony A. Jr.
10% Owner
2020-09-16 16:45:354285
2,080,520
2,084,805Form 4
BASKETT FOREST
10% Owner
2020-09-16 16:44:180
2,073,464
2,073,464Form 4
SANDELL SCOTT D
10% Owner
2020-09-16 16:47:360
2,072,194
2,072,194Form 4
KERINS PATRICK J
10% Owner
2020-09-16 16:46:354796
2,060,000
2,064,796Form 4
Sonsini Peter W.
10% Owner
2020-09-16 16:48:25993
2,061,192
2,062,185Form 4
FMR LLC
See Remark 1
2018-02-13 09:40:30884,015
0
884,015Form 13G
Lowinger Timothy B
SVP, Chief Sci.&Tech. Officer
2024-01-17 17:19:56519,328
0
519,328Form 4
DeSchuytner Brian
SVP, COO & CFO
2024-01-17 17:18:01424,094
0
424,094Form 4
Bala Mohan
SVP, Chief Development Officer
2024-01-17 17:16:56361,135
0
361,135Form 4
Carvajal Alejandra
SVP, Chief Legal Officer
2024-01-17 17:18:46334,278
0
334,278Form 4
Yang Arvin
SVP, Chief Medical Officer
2023-01-18 20:29:00317,903
0
317,903Form 4
MISRA TUSHAR
SVP, Chief Manuf. Officer
2024-01-17 17:21:21271,299
0
271,299Form 4
Huber Martin H. Jr.
President, CEO
2024-01-17 17:19:30243,375
0
243,375Form 4
Huebner Dirk
Chief Medical Officer
2020-01-16 16:34:44100,833
0
100,833Form 4
Spellman David A
Chief Financial Officer
2019-01-25 16:07:18100,000
0
100,000Form 4
Bergstrom Donald A
Chief Medical Officer
2018-02-06 16:24:3556,884
0
56,884Form 4
Dere Willard H
Director
2024-06-12 16:51:0555,000
0
55,000Form 4
Diaz Allene M.
Director
2024-06-12 16:51:4355,000
0
55,000Form 4
Hack Andrew A. F.
Director
2024-06-12 17:31:0655,000
0
55,000Form 4
Protopapas Anna
Director
2024-06-12 16:54:0855,000
0
55,000Form 4
MOTT DAVID M
Director
2024-06-12 16:53:3155,000
0
55,000Form 4
Hege Kristen
Director
2024-06-12 16:52:4655,000
0
55,000Form 4
Jack Eva M.
Chief Bus. Officer, Tres, Sec.
2020-09-16 18:31:2235,248
0
35,248Form 4
Kaufman Michael J.
Chief Manufacturing Officer
2021-07-19 20:50:2132,622
0
32,622Form 4
Foster Wayne
Vice President of Finance
2019-01-25 16:05:0530,750
0
30,750Form 4
Mandelia Ashish
VP, Chief Accounting Officer
2024-02-16 16:30:4025,973
0
25,973Form 4/A
Alleva Lawrence M
Director
2024-07-02 16:25:558972
0
8972Form 4
Nayeem Sara M.
Director
2018-01-04 16:31:303560
0
3560Form 4
Jones Elaine V
Director
2017-06-27 19:36:060
0
0Form 3
New Enterprise Associates 14 L.P.
10% Owner
2020-12-10 13:17:310
0
0Form 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 13:17:310
0
0Form 13D