Seaport Therapeutics Inc. (SPTX) - Insider Trading & Ownership

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>>
Time period
Insider Trading Transactions for Seaport Therapeutics Inc.
Common stock purchase or sale:
Transaction
Date
Reported
DateTime
CompanySymbolInsider
Relationship
Shares
Traded
Average
Price
Total
Amount
Shares
Owned
Filing
2026-06-22
Purchase
2026-06-24
06:05 am
Seaport Therapeutics Inc.SPTXHOMBACH ROBERT J.
Director
13,000$18.14$235,76813,000
(Indirect)
View
2026-05-04
Purchase
2026-05-04
6:02 pm
Seaport Therapeutics Inc.SPTXARCH 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
1,100,000$18$19,800,0006,294,951
(Indirect)
View

Stock options: Exercise, Award, Grant, Conversion
Transaction
Date
Reported
DateTime
Exercisable
Expiration
CompanySymnbolInsider
Relationship
Shares
Traded
Conversion
Price
Shares
Owned
Filing

Ownership
2026-05-06
9:16 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXGAP Coinvestments CDA L.P.
General Atlantic Partners (Lux) SCSp
General Atlantic (Lux) S.a r.l.
General Atlantic GenPar (Lux) SCSp
Director
10% Owner
0$06,101,582
(Indirect)
View

Ownership
2026-05-06
9:14 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXGeneral 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
0$06,101,582
(Indirect)
View
2026-05-04
Conversion
2026-05-06
7:38 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXPureTech Health plc
PureTech LYT Inc.
10% Owner
67,835,164$016,685,013
(Indirect)
View
2026-04-30
Option Award
2026-05-04
6:18 pm
N/A
2036-04-29
Seaport Therapeutics Inc.SPTXZohar Daphne
Chief Executive Officer
1,758,599$01,758,599
(Direct)
View
2026-05-04
Conversion
2026-05-04
6:14 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXHEALY JAMES
Director
11,310,484$02,731,538
(Indirect)
View
2026-04-30
Option Award
2026-05-04
6:13 pm
N/A
2036-04-29
Seaport Therapeutics Inc.SPTXWhite Lauren
Chief Financial Officer
63,680$070,382
(Direct)
View
2026-05-04
Conversion
2026-05-04
6:13 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXWhite Lauren
Chief Financial Officer
27,754$070,382
(Indirect)
View
2026-04-30
Option Award
2026-05-04
6:10 pm
N/A
2036-04-29
Seaport Therapeutics Inc.SPTXWheadon David E.
Director
12,258$012,258
(Direct)
View
2026-04-30
Option Award
2026-05-04
6:09 pm
N/A
2036-04-29
Seaport Therapeutics Inc.SPTXPETERSON SANDRA E
Director
12,258$012,258
(Direct)
View
2026-04-30
Option Award
2026-05-04
6:08 pm
N/A
2036-04-29
Seaport Therapeutics Inc.SPTXGladstein Lana
General Counsel
63,680$097,195
(Direct)
View
2026-05-04
Conversion
2026-05-04
6:08 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXGladstein Lana
General Counsel
138,778$097,195
(Direct)
View
2026-04-30
Option Award
2026-05-04
6:07 pm
N/A
2036-04-29
Seaport Therapeutics Inc.SPTXChen Michael Cunyuan
Chief Scientific Officer
63,680$067,031
(Direct)
View
2026-05-04
Conversion
2026-05-04
6:07 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXChen Michael Cunyuan
Chief Scientific Officer
13,877$067,031
(Direct)
View
2026-04-30
Option Award
2026-05-04
6:06 pm
N/A
2036-04-29
Seaport Therapeutics Inc.SPTXTorres Denice
Director
12,258$025,664
(Direct)
View
2026-05-04
Conversion
2026-05-04
6:06 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXTorres Denice
Director
55,511$025,664
(Indirect)
View
2026-04-30
Option Award
2026-05-04
6:05 pm
N/A
2036-04-29
Seaport Therapeutics Inc.SPTXPAUL STEVEN M
Director
1,003,450$01,866,481
(Direct)
View
2026-05-04
Conversion
2026-05-04
6:05 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXPAUL STEVEN M
Director
277,557$01,866,481
(Direct)
View
2026-05-04
Conversion
2026-05-04
6:02 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXARCH 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
5,194,951$06,294,951
(Indirect)
View
2026-04-30
Option Award
2026-05-04
6:02 pm
N/A
2036-04-29
Seaport Therapeutics Inc.SPTXHOMBACH ROBERT J.
Director
12,258$012,258
(Direct)
View
2026-04-30
Option Award
2026-05-04
6:01 pm
N/A
2036-04-29
Seaport Therapeutics Inc.SPTXLoebel Antony
Chief Medical Officer
63,680$083,789
(Direct)
View
2026-05-04
Conversion
2026-05-04
6:01 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXLoebel Antony
Chief Medical Officer
83,266$083,789
(Direct)
View
2026-04-30
Option Award
2026-05-04
6:00 pm
N/A
2036-04-29
Seaport Therapeutics Inc.SPTXMates Sharon
Director
49,033$049,033
(Direct)
View

Ownership
2026-04-30
9:35 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXPureTech Health plc
PureTech LYT Inc.
10% Owner
0$016,685,013
(Indirect)
View

Ownership
2026-04-30
8:18 pm
N/A
2034-12-28
Seaport Therapeutics Inc.SPTXPETERSON SANDRA E
Director
0$089,300
(Direct)
View

Ownership
2026-04-30
8:17 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXZohar Daphne
Chief Executive Officer
0$03,959,558
(Direct)
View

Ownership
2026-04-30
8:14 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXTorres Denice
Director
0$0102,706
(Indirect)
View

Ownership
2026-04-30
8:14 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXWhite Lauren
Chief Financial Officer
0$0508,553
(Indirect)
View

Ownership
2026-04-30
8:10 pm
N/A
2034-08-11
Seaport Therapeutics Inc.SPTXWheadon David E.
Director
0$089,300
(Direct)
View

Ownership
2026-04-30
8:10 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXHEALY JAMES
Director
0$02,731,538
(Indirect)
View

Ownership
2026-04-30
8:09 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXPAUL STEVEN M
Director
0$02,537,784
(Direct)
View

Ownership
2026-04-30
8:09 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXARCH 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
0$05,194,951
(Indirect)
View

Ownership
2026-04-30
8:07 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXGladstein Lana
General Counsel
0$0370,488
(Direct)
View

Ownership
2026-04-30
8:05 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXChen Michael Cunyuan
Chief Scientific Officer
0$0571,958
(Direct)
View

Ownership
2026-04-30
8:05 pm
N/A
2035-03-02
Seaport Therapeutics Inc.SPTXHOMBACH ROBERT J.
Director
0$089,300
(Direct)
View

Ownership
2026-04-30
8:04 pm
N/A
N/A
Seaport Therapeutics Inc.SPTXLoebel Antony
Chief Medical Officer
0$0628,388
(Direct)
View