Seaport Therapeutics, Inc. (SPTX) - Insider Holders & Insider Ownership

List of insiders holdings for Seaport 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
1PureTech Health plc
PureTech LYT Inc.
10% Owner
2026-08-14 16:30:0316,685,013
0
16,685,013Form 13G
2ARCH Venture Partners XII LLC
ARCH Venture Partners XII L.P.
ARCH Venture Fund XII L.P.
CRANDELL KEITH
NELSEN ROBERT
Burow Kristina
GILLIS STEVEN
10% Owner
2026-05-06 16:26:246,294,951
0
6,294,951Form 13D
3GAP Coinvestments CDA L.P.
General Atlantic Partners (Lux) SCSp
General Atlantic (Lux) S.a r.l.
General Atlantic GenPar (Lux) SCSp
Director
10% Owner
2026-05-06 21:16:290
6,101,582
6,101,582Form 3
4General Atlantic (SP) L.P.
GENERAL ATLANTIC L.P.
GENERAL ATLANTIC GENPAR L.P.
General Atlantic Partners 100 L.P.
GAP COINVESTMENTS III LLC
GAP COINVESTMENTS IV LLC
GAP Coinvestments V LLC
GENERAL ATLANTIC GENPAR (BERMUDA) L.P.
General Atlantic (SPV) GP LLC
GAP (Bermuda) L.P.
Director
10% Owner
2026-05-11 19:54:106,101,582
0
6,101,582Form 13D
5Zohar Daphne
Chief Executive Officer
2026-08-05 08:06:105,225,497
0
5,225,497Form 13G
6PAUL STEVEN M
Director
2026-08-05 06:01:413,516,718
0
3,516,718Form 13G
7HEALY JAMES
Director
2026-05-04 18:14:200
2,731,538
2,731,538Form 4
8Gladstein Lana
General Counsel
2026-05-04 18:08:4797,195
0
97,195Form 4
9Loebel Antony
Chief Medical Officer
2026-05-04 18:01:2283,789
0
83,789Form 4
10White Lauren
Chief Financial Officer
2026-05-04 18:13:5263,680
6,702
70,382Form 4
11Chen Michael Cunyuan
Chief Scientific Officer
2026-05-04 18:07:4167,031
0
67,031Form 4
12Mates Sharon
Director
2026-05-04 18:00:4749,033
0
49,033Form 4
13Torres Denice
Director
2026-05-04 18:06:2912,258
13,406
25,664Form 4
14HOMBACH ROBERT J.
Director
2026-06-24 06:05:170
13,000
13,000Form 4
15Wheadon David E.
Director
2026-05-04 18:10:2712,258
0
12,258Form 4
16PETERSON SANDRA E
Director
2026-05-04 18:09:4812,258
0
12,258Form 4
17Pitts Jason
Director
2026-04-30 20:11:480
0
0Form 3