Seaport Therapeutics Inc.

Last updated September 27, 2026

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Organization details

Legal name: Seaport Therapeutics Inc.
Ownership: Public
Status: Active
Sector (GICS): Health Care
SIC code: 2834 — Pharmaceutical Preparations
Jurisdiction of incorporation: Delaware
Headquarters city: Boston
Headquarters state / province: Massachusetts
Headquarters country: United States
Fiscal year end: December
Ticker symbol: SPTX
Primary stock exchange: Nasdaq

Identifiers

SEC CIK: 0002042347
EIN: 99-2235719

Board of directors

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Atlantic (Lux) S.a R.l. General · Director
Since 2026
Atlantic GenPar (Lux) SCSp General · Director
Since 2026
Daphne Zohar · Director · Chief Executive Officer
Since 2026
David E. Wheadon · Director
Since 2026
Denice Torres · Director
Since 2026
James Healy · Director Overboarded
Since 2026
Jason Pitts · Director
Since 2026
Robert J. Hombach · Director
Since 2026
Sandra E. Peterson · Director
Since 2026
Sharon Mates · Director
Since 2026
Steven M. Paul · Director
Since 2026

Chief executives

Daphne Zohar · Chief Executive Officer

Since April 2026

Board connections

9 of this board's directors also sit on 16 other boards. 12 are in the same sector.

Shared director Other board Same sector

Alkami Technology Inc.
via Atlantic (Lux) S.a R.l. General and Atlantic GenPar (Lux) SCSp General
Liftoff Mobile Inc.
via Atlantic (Lux) S.a R.l. General and Atlantic GenPar (Lux) SCSp General
Rapport Therapeutics Inc. Same sector
via James Healy and Steven M. Paul
ArriVent BioPharma Inc. Same sector
via James Healy
Benitec Biopharma Inc. Same sector
via Sharon Mates
BioAge Labs Inc. Same sector
via James Healy
BioMarin Pharmaceutical Inc. Same sector
via Robert J. Hombach
Bolt Biotherapeutics Inc. Same sector
via James Healy
Celldex Therapeutics Inc. Same sector
via Denice Torres
Embecta Corp. Same sector
via Robert J. Hombach
Glaukos Corporation Same sector
via Denice Torres
Henry Schein Inc.
via Robert J. Hombach
Indivior Pharmaceuticals Inc. Same sector
via David E. Wheadon
Microsoft Corporation
via Sandra E. Peterson
Natera Inc. Same sector
via James Healy
Sotera Health Company Same sector
via David E. Wheadon

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $20,135,145; 3 purchases by 3 insiders
Sold, last 12 months: $0; 0 sales by 0 insiders

Date	Insider	Transaction	Shares	Price	Value
Nov 3, 2026	Denice Torres Director	Open-market purchase	+5,000	$19.87	$99,325
Jun 22, 2026	Robert J. Hombach Director	Open-market purchase	+13,000	$18.14	$235,820
May 4, 2026	PureTech Health plc 10% owner	Derivative conversion	+12,736,014	—	—
May 4, 2026	James Healy Director	Derivative conversion	+1,927,159	—	—
May 4, 2026	White Lauren Officer (Chief Financial Officer)	Derivative conversion	+6,702	—	—
May 4, 2026	Gladstein Lana Officer (General Counsel)	Derivative conversion	+33,515	—	—
May 4, 2026	Chen Michael Cunyuan Officer (Chief Scientific Officer)	Derivative conversion	+3,351	—	—
May 4, 2026	Denice Torres Director	Derivative conversion	+13,406	—	—
May 4, 2026	Steven M. Paul Director	Derivative conversion	+67,031	—	—
May 4, 2026	ARCH Venture Partners XII, L.P. 10% owner	Derivative conversion	+2,513,686	—	—
May 4, 2026	Loebel Antony Officer (Chief Medical Officer)	Derivative conversion	+20,109	—	—
May 4, 2026	PureTech Health plc 10% owner	Derivative conversion	+2,681,265	—	—
May 4, 2026	James Healy Director	Derivative conversion	+804,379	—	—
May 4, 2026	ARCH Venture Partners XII, L.P. 10% owner	Derivative conversion	+2,681,265	—	—
May 4, 2026	PureTech Health plc 10% owner	Derivative conversion	+965,255	—	—

Peers

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Questions about Seaport Therapeutics Inc.

Who is the CEO of Seaport Therapeutics Inc.?

Daphne Zohar has been Seaport Therapeutics Inc.'s Chief Executive Officer since April 2026.

How many directors are on Seaport Therapeutics Inc.'s board?

Seaport Therapeutics Inc.'s board has 11 directors: Atlantic (Lux) S.a R.l. General, Atlantic GenPar (Lux) SCSp General, Daphne Zohar, David E. Wheadon, Denice Torres, James Healy, Jason Pitts, Robert J. Hombach, Sandra E. Peterson, Sharon Mates and 1 other.

Are Seaport Therapeutics Inc. insiders buying or selling shares?

Over the last 12 months, Seaport Therapeutics Inc. insiders bought $20.1 million of shares in 3 purchases and made no open-market sales on the open market, as reported to the SEC on Forms 4 and 5.

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