Seaport Therapeutics Ownership | Who Owns Seaport Therapeutics?

Seaport Therapeutics Ownership Summary

Seaport Therapeutics is owned by 70.07% institutional investors, 35.06% insiders. Arch venture management is the largest institutional shareholder, holding 11.76% of SPTX shares. T. Rowe Price Health Sciences is the top mutual fund, with 1.94% of its assets in Seaport Therapeutics shares.

SPTX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Seaport Therapeutics	70.07%	35.06%	-5.12%
Sector	Healthcare Stocks	245.07%	12.10%	-157.17%
Industry	Biotech Stocks	380.48%	11.73%	-292.21%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Arch venture management	6.29M	11.76%	$136.60M
General atlantic	6.10M	11.40%	$132.53M
Sofinnova investments	3.56M	6.66%	$77.43M
Goldman sachs group	2.18M	4.07%	$47.32M
Trv gp vi	2.06M	3.85%	$44.77M
Canada pension plan investment board	1.98M	3.69%	$42.91M
Jpmorgan chase	1.82M	3.39%	$40.89M
Foresite capital management vi	1.78M	3.32%	$38.65M
Price t rowe associates inc /md/	1.31M	2.44%	$28.42M
Fmr	1.19M	2.21%	$25.74M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Trv gp vi	2.06M	19.27%	$44.77M
Arch venture management	6.29M	12.42%	$136.60M
Foresite capital management vi	1.78M	6.01%	$38.65M
General atlantic	6.10M	4.56%	$132.53M
Sofinnova investments	3.56M	4.00%	$77.43M
Bellevue group	1.10M	0.50%	$23.89M
Pier capital	169.99K	0.49%	$3.69M
Siren	1.10M	0.48%	$23.79M
Braidwell lp	500.00K	0.40%	$10.86M
Seven grand managers	225.00K	0.20%	$4.89M

Top Buyers

Holder	Shares	% Assets	Change
Arch venture management	6.29M	12.42%	6.29M
General atlantic	6.10M	4.56%	6.10M
Sofinnova investments	3.56M	4.00%	3.56M
Goldman sachs group	2.18M	0.00%	2.18M
Trv gp vi	2.06M	19.27%	2.06M

Top Sellers

Holder	Shares	% Assets	Change
Integrated wealth concepts	32.00	-	32.00
Barclays	837.00	-	837.00
Assetmark	1.43K	0.00%	1.43K
Jones financial companies lllp	2.26K	-	2.26K
Citigroup	2.45K	-	2.45K

New Positions

Holder	Shares	% Assets	Change	Value
Arch venture management	6.29M	12.42%	6.29M	$136.60M
General atlantic	6.10M	4.56%	6.10M	$132.53M
Sofinnova investments	3.56M	4.00%	3.56M	$77.43M
Goldman sachs group	2.18M	0.00%	2.18M	$47.32M
Trv gp vi	2.06M	19.27%	2.06M	$44.77M

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	55	-	37,506,589	-	70	-	55	-	-	-

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
T. Rowe Price Health Sciences	1.04M	1.94%	1.04M
JPMorgan Small Cap Growth A	840.93K	1.57%	141.23K
Jennison Health Sciences Equity	438.75K	0.82%	438.75K
PGIM Jennison Health Sciences Z	438.75K	0.82%	-
Vanguard Morn Total Stk Mkt Idx Investor	426.37K	0.80%	372.00K
Vanguard MStar Total Stk Mkt Idx Invest	426.37K	0.80%	-
Fidelity Growth Compy Commingled Pl S	356.20K	0.67%	60.40K
JPMorgan Small Cap Blend A	271.50K	0.51%	46.05K
Fidelity Growth Company Fund	259.67K	0.49%	35.27K
Fidelity Blue Chip Growth	235.90K	0.44%	-

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	-

SPTX Ownership FAQ

Who Owns Seaport Therapeutics?

Seaport Therapeutics shareholders are primarily institutional investors at 70.07%, followed by 35.06% insiders and -5.13% retail investors. The average institutional ownership in Seaport Therapeutics's industry, Biotech Stocks , is 380.48%, which Seaport Therapeutics falls below.

Who owns the most shares of Seaport Therapeutics?

Seaport Therapeutics’s largest shareholders are Arch venture management (6.29M shares, 11.76%), General atlantic (6.1M shares, 11.40%), and Sofinnova investments (3.56M shares, 6.66%). Together, they hold 29.82% of Seaport Therapeutics’s total shares outstanding.

Does Blackrock own Seaport Therapeutics?

BlackRock is not among the top 10 institutional shareholders of Seaport Therapeutics.

Who is Seaport Therapeutics’s biggest shareholder by percentage of total assets invested?

Trv gp vi is Seaport Therapeutics’s biggest shareholder by percentage of total assets invested, with 19.27% of its assets in 2.06M Seaport Therapeutics shares, valued at 44.77M$.

Who is the top mutual fund holder of Seaport Therapeutics shares?

T. Rowe Price Health Sciences is the top mutual fund holder of Seaport Therapeutics shares, with 1.94% of its total shares outstanding invested in 1.04M Seaport Therapeutics shares.

Try Tickergate Pro Free

Customize Everything. 100% Flexibility. Fast and Easy to Use (No code or Excel Needed)

Customize your own personal stocks lists, views and charts
Choose from hundreds of fields, up to 15 years of history
Conduct deep comparison analysis

Discover trending investment themes
Find your next best investment
Research stocks using tools