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Septerna, Inc. (SEPN) Ownership - Who Owns Septerna, Inc.?

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Septerna, Inc. (SEPN) Ownership Overview

6.12% Insiders

8.46% Mutual Funds

28.12% Other Institutional Investors

6.89% ETFs

50.41% Public Companies and

Individual Investors

The ownership structure of Septerna, Inc. (SEPN) stock is a mix of institutional, retail, and individual investors. Approximately 43.48% of the company’s stock is owned by Institutional Investors, 6.12% is owned by Insiders, and 50.41% is owned by Public Companies and Individual Investors.

The ownership structure of Septerna, Inc. (SEPN) stock is a mix of institutional, retail, and individual investors. Approximately 36.58% of the company’s stock is owned by Institutional Investors, 6.12% is owned by Insiders, and 6.89% is owned by Public Companies and Individual Investors.

Recent Insider Trading Activity

Date	Name	Activity	Value
Aug 14, 2026	Ra Capital Management, Llc	xxxxxxxxxxxxx	$63452500

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Recent Hedge Fund Trading Activity

Date	Firm	Activity	Value
Jun 30, 2026	Driehaus Capital Management Llc	xxxxxxxxxxxxx	$148463112
Jun 30, 2026	Woodline Partners Lp	xxxxxxxxxxxxx	$6213567
Jun 30, 2026	Primecap Management Co	xxxxxxxxxxxxx	$39095623
Jun 30, 2026	Hussman Strategic Advisors Inc	xxxxxxxxxxxxx	$2109870

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Top Shareholders

Holder	# of Shares	Type	% Holding	Value
	10,280,050	Insider	22.02%	384,165,469
Peter Kolchinsky	6,995,858	Institution	14.99%	261,435,213
Richard Driehaus	4,433,058	Institution	9.50%	165,663,377
	1,425,618	Institution	3.05%	53,275,345
	1,208,637	Institution	2.59%	45,166,765
Theofanis Kolokotrones	1,167,382	Institution	2.50%	43,625,065
	1,165,728	Institution	2.50%	43,563,255
	826,907	Insider	1.77%	30,901,515
	812,982	Institution	1.74%	30,381,137
	725,443	Insider	1.55%	27,109,805

Top Mutual Fund Holders

# of Shares	Type	% Holding	Value
1,165,728	Institution	2.50%	43,563,255
812,982	Institution	1.74%	30,381,137
661,765	Institution	1.42%	24,730,158
302,245	Institution	0.65%	11,294,896
245,266	Institution	0.53%	9,165,590
122,974	Institution	0.26%	4,595,538
105,000	Institution	0.22%	3,923,850
72,472	Institution	0.16%	2,708,279
71,468	Institution	0.15%	2,670,759
57,829	Institution	0.12%	2,161,070

Top ETF Holders

Holder	# of Shares	Type	% Holding	Value
Vanguard	927,665	Institution	1.99%	31,958,059
iShares	568,758	Institution	1.22%	21,254,486
Vanguard	264,126	Institution	0.57%	9,099,141
iShares	207,334	Institution	0.44%	7,748,072
SPDR	179,989	Institution	0.39%	6,614,596
iShares	138,126	Institution	0.30%	5,161,769
Vanguard	124,040	Institution	0.27%	4,273,178
Schwab	110,721	Institution	0.24%	4,068,997
iShares	84,620	Institution	0.18%	3,162,249
iShares	68,982	Institution	0.15%	2,577,857

FAQ

Who Owns Septerna, Inc. (SEPN)?

According to the latest TipRanks data, approximately 28.12% of the company's stock is held by institutional investors, 6.12% is held by insiders, and 50.41% is held by retail investors.

What percentage of Septerna, Inc. (SEPN) stock is held by institutional investors?

According to the latest TipRanks data, approximately 28.12% of Septerna, Inc. (SEPN) stock is held by institutional investors.

What percentage of Septerna, Inc. (SEPN) stock is held by retail investors?

According to the latest TipRanks data, approximately 50.41% of Septerna, Inc. (SEPN) stock is held by retail investors.

Who owns the most shares of Septerna, Inc. (SEPN)?

Third Rock Ventures V, L.P. owns the most shares of Septerna, Inc. (SEPN).

What is the significance of the ownership structure for a publicly traded company?

The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.