WAVEMAN · COMPANY

SPTX · Seaport Therapeutics, Inc.

LIVE

TEAM-0.32% 13F +439META+3.01% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV+4.49% 13F +693CRM+2.92% 13F +1,018CVNA-0.98% 13F +794TPL-0.71% 13F +444NET+4.32% 13F +710MSTR+17.56% 13F +526DELL+4.91% 13F +1,203CRWD+5.68% 13F +1,382ANET+1.22% 13F +1,323COIN+10.14% 13F +475TEAM-0.32% 13F +439META+3.01% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV+4.49% 13F +693CRM+2.92% 13F +1,018CVNA-0.98% 13F +794TPL-0.71% 13F +444NET+4.32% 13F +710MSTR+17.56% 13F +526DELL+4.91% 13F +1,203CRWD+5.68% 13F +1,382ANET+1.22% 13F +1,323COIN+10.14% 13F +475

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SPTX

Name: Seaport Therapeutics, Inc. (SPTX) insider trading and ownership data
Creator: WaveMan
License: https://wave-man.com/terms

Seaport Therapeutics, Inc.

PHARMA & BIOTECH · PHARMACEUTICAL PREPARATIONS · CIK 0002042347

ACTIVIST 13D☆ WATCH

INSIDER NET · 180D

$20.0M

open-market buys minus sells, Form 4 codes P and S

INSIDER BUYERS · 180D

CONGRESS BUYERS · 1Y

FUNDS ADDED · QTR

13F, latest reported quarter

REVENUE GROWTH

XBRL, annual

NET MARGIN

CONVERSIONS · 180D

codes C/M, not in net · no price filed

SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST

INSIDERS

net +$20.0M over 180 days

+$235.8K over 90 days · +$19.8M of it by a 10%+ holder

more than 97% of Pharma & Biotech

CONGRESS

no member of Congress has reported trading it

FUNDS

55 funds added or opened last quarter

below 54% of Pharma & Biotech

REVENUE

no revenue reported in any filing

MARGIN

no margin: this company reports no revenue to divide by

BUYBACKS

no share repurchases reported

SHORT

no short interest reported

THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET

55 funds added or opened positions in the latest 13F quarter, of 55 holders.

General Atlantic, L.P. disclosed a 5%+ stake (11.5%) in the last six months.

The year, with the filings on it

Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail

TOTAL 12M RETURN +25.6%

+25.6%12M

INSIDER BUY13D/G STAKE

INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY

Live price

Daily candles from TradingView, on their licence — no filings are marked on this one

WHY THIS NAME IS ON THE DESK

An activist crossed the 5% line with declared intent.

The record shows a net $20.0M bought by insiders over 180 days, 55 funds added last quarter. Every figure is a federal filing, dated the day it became public.

Backtest this pattern Open the screener

Same sector, ranked by filing activity

Sector from the SEC's own SIC classification

UTHR CPIX MRNA REGN LLY ALNY ELF CITR MDGL DNA VRTX NUVL

Insider transactions

Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, Seaport Therapeutics, Inc. insiders bought a net $20.0M of stock across 2 Form 4 purchases and sales, with 2 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-05.

INSIDER

FILED

VALUE

HOMBACH ROBERT J.

Director

BUY

2026-06-22

13,000.0

$235.8K

ARCH Venture Partners XII, L.P.

—

BUY

2026-05-04

1,100,000.0

$19.8M

2 TRANSACTIONS ON RECORD · THIN RECORD, READ IT AS SUCH

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Institutional holders

13F · holdings as of the latest quarter funds have reported

ARCH Venture Management, LLC

6,294,951.0 sh

$136.6M

GENERAL ATLANTIC, L.P.

6,101,582.0 sh

$132.5M

Sofinnova Investments, Inc.

3,564,871.0 sh

$77.4M

GOLDMAN SACHS GROUP INC

2,178,642.0 sh

$47.3M

TRV GP VI, LLC

2,061,222.0 sh

$44.8M

5%+ owners

13D = intent to influence · 13G = passive

General Atlantic, L.P.

ACTIVIST 13D · 2026-05-11

11.5%

General Atlantic (SPV) GP, LLC

ACTIVIST 13D · 2026-05-11

11.5%

General Atlantic Partners 100, L.P.

ACTIVIST 13D · 2026-05-11

11.5%

General Atlantic (SP), L.P.

ACTIVIST 13D · 2026-05-11

11.5%

General Atlantic Partners (Lux) SCSp

ACTIVIST 13D · 2026-05-11

11.5%

FORM 144

No planned-sale notices

No insider has notified an intent to sell. This is the panel to watch after a run-up.

Clinical pipeline

ClinicalTrials.gov · 2 registered trials, 2 still enrolling or running — a status change here is dated weeks before the press release

Phase 2

2 ACTIVE

TRIALS MATCHED TO THIS TICKER BY SPONSOR NAME · STUDIES RUN UNDER A SUBSIDIARY'S OWN NAME ARE NOT INCLUDED