Event-Driven Stocks

Seaport Therapeutics, Inc.

SPTXNasdaq

Healthcare · Pharmaceutical Preparations · DE · SEC filings ↗ · Compare ⊕

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Financials

SEC XBRL · annual

No structured XBRL financials available (common for pre-2009 filers, foreign issuers, or companies that never reported as a US public company).

Clinical trials

ClinicalTrials.gov · ongoing · next readout first

Interventional studies led by this company. “Readout” is the trial's primary-completion date — an estimate the sponsor reports, not a guarantee.

Insider transactions

SEC Form 4 · most recent
8 acquisitions0 disposalsnet +17.3M shares · last 8
InsiderDateTypeSharesPrice
Puretech Health Plc10% ownerMay 4, 2026Conversion12.7M
Healy JamesDirectorMay 4, 2026Conversion1.9M
White LaurenOfficer — Chief Financial OfficerMay 4, 2026Conversion6,702
Gladstein LanaOfficer — General CounselMay 4, 2026Conversion33,515
Chen Michael CunyuanOfficer — Chief Scientific OfficerMay 4, 2026Conversion3,351
Torres DeniceDirectorMay 4, 2026Conversion13,406
Paul Steven MDirectorMay 4, 2026Conversion67,031
Arch Venture Partners Xii, Llc10% ownerMay 4, 2026Conversion2.5M

Headline trade per Form 4 (officers, directors, 10%+ owners). Buy/sell read from the filing's structured data — blank where a field isn't cleanly tagged.

Short interest

FINRA · bi-monthly
SettlementShares shortDays to coverΔ vs prior
May 15, 20261.5M1.7+100.0%

Shares sold short as reported to FINRA. Days-to-cover = short shares ÷ average daily volume — higher means more potential squeeze pressure.

Material events

SEC Form 8-K · most recent

Events the company reported on Form 8-K, labelled by the SEC item code it filed under — its own classification, not our interpretation.

Recent SEC filings

All filings ↗

Event-driven situations (2)