Seaport Therapeutics, Inc. insider trading

SPTXNASDAQ

$18.50+0.08 (+0.43% today)

“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.” — Peter Lynch

Insider Trading vs Stock Price data

Showing the 1Y range: May 1, 2026 to Oct 5, 2026. Price (-6.8%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Open market purchase

Open market sell

Marker size reflects transaction size.

Net dollar flow · Buy / Sell balance

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Key players

JHJames HealyDirector5.1028%of company
DZDaphne ZoharChief Executive Officer2.2305%of company
SMSteven M. PaulDirector1.6122%of company
LGLana GladsteinGeneral Counsel0.0626%of company
ALAntony LoebelChief Medical Officer0.0376%of company
DTDenice TorresDirector0.025%of company
RJRobert J. HombachDirector0.0243%of company
LWLauren WhiteChief Financial Officer0.0125%of company
MCMichael Cunyuan ChenChief Scientific Officer0.0063%of company
AVARCH Venture Partners XII, L.P.10% OwnerNot reportedof company

AI Activity Analysis

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Insider activity

Fromto

Company	Insider / role	Action	ΔOwn	Avg price	Amount
SPTX	Robert J. HombachDirector	Open market purchase$236K	Not reported	$18.14	$236K	Jun 22, 2026	Jun 24, 2026
SPTX	ARCH Venture Partners XII, L.P.10% Owner	Open market purchase$19.8M	+21.2%	$18.00	$19.8M	May 4, 2026	May 4, 2026

End of history · 2 transactions