This is a routine Form 3 filing confirming General Atlantic's pre-IPO stake. No immediate trading action is warranted. Monitor for any subsequent Form 4 filings that would indicate insider buying or selling, which would carry more signal.
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Executive Summary
General Atlantic entities filed Form 3 initial beneficial ownership disclosures for Seaport Therapeutics (SPTX), reporting 6,101,582 shares of common stock held indirectly through General Atlantic (SP), L.P., including 3,351,582 shares issuable upon conversion of Series B preferred stock. This is a routine initial ownership filing by a major institutional investor following the company's IPO or listing, confirming a significant pre-IPO stake but providing no new trading signal.
Key Facts
- General Atlantic entities collectively report beneficial ownership of 6,101,582 shares of SPTX common stock.
- Of these, 3,351,582 shares are issuable upon conversion of Series B preferred stock.
- The filing is an initial statement of beneficial ownership (Form 3) filed on 2026-05-06, covering ownership as of 2026-05-04.
- Reporting owners include GAP Coinvestments CDA, L.P., General Atlantic Partners (Lux), SCSp, General Atlantic GenPar (Lux) SCSp, and General Atlantic (Lux) S.a r.l.
- The filing notes that the reporting persons may be deemed a group under the Exchange Act and are directors-by-deputization for Section 16 purposes.
Financial Impact
No financial impact — the filing discloses existing ownership, not a new transaction.
Risk Factors
- No material risks identified from this filing alone.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 3 Filing (Primary) | 0000950142-26-001309 |
| Document: 0000950142-26-001309-index.html | 0000950142-26-001309 |
| Document: 0000950142-26-001309.txt | 0000950142-26-001309 |
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Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 3, 2026 12w ago | 8-K | $20.65 | awaiting T+60 | — | $21.95 (+6.30%) |
Jun 8, 2026 20w ago | 8-K | $16.20 $23.61 | ▲ +45.74% | ▲ +42.69% | $21.95 (+35.49%) |
May 6, 2026 24w ago | 3 | $15.50 $20.65 | ▲ +33.23% | ▲ +29.39% | $21.95 (+41.61%) |
May 1, 2026 25w ago | 424B4 | $17.00 $19.74 | ▲ +16.12% | ▲ +14.26% | $21.95 (+29.12%) |
Apr 30, 2026 25w ago | 3 | $19.84 $19.90 | ▲ +0.30% | ▼ −2.77% | $21.95 (+10.64%) |
Apr 30, 2026 25w ago | 3 | $19.84 $19.90 | ▲ +0.30% | ▼ −2.77% | $21.95 (+10.64%) |
Apr 30, 2026 25w ago | 3 | $19.84 $19.90 | ▲ +0.30% | ▼ −2.77% | $21.95 (+10.64%) |
Apr 30, 2026 25w ago | 3 | $19.84 $19.90 | ▲ +0.30% | ▼ −2.77% | $21.95 (+10.64%) |
Apr 30, 2026 25w ago | 3 | $19.84 $19.90 | ▲ +0.30% | ▼ −2.77% | $21.95 (+10.64%) |
Apr 27, 2026 26w ago | S-1/A | — | awaiting T+60 | — | — |
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