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SCHEDULE 13D Filed 2026-05-11 Event 2026-05-04 SEC 0000950142-26-001350 →

GENERAL ATLANTIC, L.P. → Seaport Therapeutics, Inc. SPTX

Stake: — Shares: 6,101,582 Class: Common stock, par value $0.0001 per share

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)
38 transactions
14 buys · 0 sales · 0 awards/exercises
Issuer Cluster
1 13D/G filings on this issuer
0 other filings besides this one
Filer Track Record
28 filings by this filer
27 other filings in the data moat
Short Interest · settle 2026-09-30
DTC 8.92
3,649,879 shares short · +15.9% vs prior

Post-Filing Returns · since 2026-05-04 on SPTX

+1 day
0.0%
+5 days
0.0%
+30 days
0.0%
+60 days
0.0%
+90 days
—
+180 days
—

Anchor price 18.23 on closest trading day on/after 2026-05-04. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-05-04 PureTech Health plc 10%+ owner C 12,736,014 — —
2026-05-04 HEALY JAMES director C 1,927,159 — —
2026-05-04 White Lauren officer C 6,702 — —
2026-05-04 Gladstein Lana officer C 33,515 — —
2026-05-04 Chen Michael Cunyuan officer C 3,351 — —
2026-05-04 Torres Denice director C 13,406 — —
2026-05-04 PAUL STEVEN M director C 67,031 — —
2026-05-04 ARCH Venture Partners XII, LLC 10%+ owner C 2,513,686 — —
2026-05-04 Loebel Antony officer C 20,109 — —
2026-05-04 Loebel Antony officer C 63,157 — —
2026-05-04 ARCH Venture Partners XII, LLC 10%+ owner C 2,681,265 — —
2026-05-04 ARCH Venture Partners XII, LLC 10%+ owner Buy 1,100,000 $18.00 $19.80M
2026-05-04 PAUL STEVEN M director C 210,526 — —
2026-05-04 Torres Denice director C 42,105 — —
2026-05-04 Chen Michael Cunyuan officer C 10,526 — —
2026-05-04 Gladstein Lana officer C 105,263 — —
2026-05-04 White Lauren officer C 21,052 — —
2026-05-04 HEALY JAMES director C 804,379 — —
2026-05-04 HEALY JAMES director C 6,052,631 — —
2026-05-04 HEALY JAMES director C 2,526,315 — —
2026-05-04 PureTech Health plc 10%+ owner C 2,681,265 — —
2026-05-04 PureTech Health plc 10%+ owner C 965,255 — —
2026-05-04 PureTech Health plc 10%+ owner C 40,000,000 — —
2026-05-04 PureTech Health plc 10%+ owner C 8,421,052 — —
2026-05-04 PureTech Health plc 10%+ owner C 3,031,578 — —
Showing 25 of 38

Other Filings by GENERAL ATLANTIC, L.P.

FiledFormIssuerStakeShares
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2025-02-13 SCHEDULE Third Harmonic Bio, Inc. — — view →
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2023-12-11 SC Arco Platform Ltd. — — view →
2023-08-14 SC Arco Platform Ltd. — — view →
2023-07-11 SC XP Inc. XP — — view →
2023-05-01 SC Arco Platform Ltd. — — view →
2023-04-25 SC dLocal Ltd DLO — — view →
2023-02-28 SC CinCor Pharma, Inc. — — view →
2023-01-17 SC Immunocore Holdings plc IMCR — — view →
2023-01-11 SC CinCor Pharma, Inc. — — view →
2023-01-11 SC Arco Platform Ltd. — — view →
2022-11-28 SC China Index Holdings Ltd — — view →
2021-07-01 SC HUTCHMED (China) Ltd HMDCF — — view →
2021-01-05 SC Futu Holdings Ltd FUTU — — view →
2020-11-30 SC Fang Holdings Ltd SFUNY — — view →
2020-11-25 SC Futu Holdings Ltd FUTU — — view →
Showing 20 of 27

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