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Seaport Therapeutics, Inc.

SPTX No buying or selling

CIK 0002042347 #2373 in the set updated 17 Sep 2026

Bought (1 mo)

$0.00

out of their own pocket, the only kind of buying there is

Sold (1 mo)

$0.00

$0.00 on a plan · $0.00 straight out of an exercise

Sold at will

$0.00

0 of 0 sales

Net

$0.00

$0.00 against sales at will

By person

10 insiders · 0 transactions

Insider

Role

Bought

Sold

Net

Holding

Worth

Change

PureTech Health plc entity

10% owner

—

16,685,013

$302.60M

+5,416%

ARCH Venture Partners XII, LLC entity

10% owner

—

6,294,951

$114.17M

—

HEALY JAMES

Director

—

2,731,538

$49.54M

—

PAUL STEVEN M

Director

—

863,031

$15.65M

+8.4%

Gladstein Lana

General Counsel

—

33,515

$607.83K

—

Loebel Antony

Chief Medical Officer

—

20,109

$364.70K

—

Torres Denice

Director

—

13,406

$243.13K

—

HOMBACH ROBERT J.

Director

—

13,000

$235.77K

—

White Lauren

Chief Financial Officer

—

6,702

$121.55K

—

Chen Michael Cunyuan

Chief Scientific Officer

—

3,351

$60.77K

—

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.

Individual transactions

Nothing of that kind in this period.

What was left out

Form 4 filings counted 0

Amendments (4/A) skipped 0

Filings about a different issuer 0

Unreadable filings 0

Joint filings 0

Sales on a Rule 10b5-1 plan 0

Sales straight out of an exercise 0

Sales at will 0

Transactions with no price 0

Shares from compensation/vesting 0

History held since 4 May 2026