Seaport Therapeutics, Inc. SPTX

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20.20 USD +0.19 (+0.95%)

At closeNov 3, 2026, 4:32 PM EST

20.20 0.00 0.00%

After hours · Nov 3, 4:32 PM ET

19.51 Day range 20.56

14.85 52-week range 28.38

Held by insiders 35.14%

Held by institutions 70.89%

Float held by institutions 109.30%

Institutions 78

Top institutional holders
Holder	% held	Shares	Value	Reported
Arch Venture Management, Llc	11.76%	6,294,951	127.16M	Jun 29, 2026
General Atlantic, L.P.	11.40%	6,101,582	123.25M	Jun 29, 2026
Sofinnova Investments, Inc.	6.66%	3,564,871	72.01M	Jun 29, 2026
Goldman Sachs Group Inc	4.07%	2,178,642	44.01M	Jun 29, 2026
Trv Gp VI, LLC	3.85%	2,061,222	41.64M	Jun 29, 2026
Canada Pension Plan Investment Board	3.69%	1,975,791	39.91M	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
JPMorgan Trust II-JPMorgan Small Cap Growth Fund	1.57%	840,931	16.99M	Jun 29, 2026
Prudential Sector Funds, Inc.-PGIM Jennison Health Sciences Fund	0.82%	438,754	8.86M	Aug 30, 2026
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	0.80%	426,371	8.61M	Jun 29, 2026
Fidelity Mt. Vernon Street Trust-Fidelity Growth Company Fund	0.79%	424,190	8.57M	Aug 30, 2026
iShares Trust-iShares Russell 2000 ETF	0.66%	355,159	7.17M	Sep 29, 2026
T. Rowe Price Health Sciences Fund, Inc.	0.56%	299,319	6.05M	Jun 29, 2026

SPTX insiders
Insider	Relation	Latest transaction	Date	Shares held
ARCH VENTURE PARTNERS XII, LLC	Beneficial Owner of more than 10% of a Class of Security	Purchase	May 3, 2026	0
CHEN MICHAEL CUNYUAN PH.D.	Officer	Conversion of Exercise of derivative security	May 3, 2026	3,351
GLADSTEIN LANA J.D.	General Counsel	Conversion of Exercise of derivative security	May 3, 2026	33,515
HEALY JAMES I	Director	Conversion of Exercise of derivative security	May 3, 2026	0
HOMBACH ROBERT J. CPA	Director	Purchase	Jun 21, 2026	0
LOEBEL ANTONY M.D.	Officer	Conversion of Exercise of derivative security	May 3, 2026	20,109

Held by funds