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

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Septerna, Inc. (SEPN) Ownership Overview

26.54% Insiders

9.73% Mutual Funds

0.03% Other Institutional Investors

8.42% ETFs

55.28% Public Companies and

Individual Investors

The ownership structure of Septerna, Inc. (SEPN) stock is a mix of institutional, retail, and individual investors. Approximately 18.18% of the company’s stock is owned by Institutional Investors, 26.54% is owned by Insiders, and 55.28% 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 9.76% of the company’s stock is owned by Institutional Investors, 26.54% is owned by Insiders, and 8.42% 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

Show More Hedge Fund Trading Activity >

Top Shareholders

Holder	# of Shares	Type	% Holding	Value
	10,280,050	Insider	22.02%	454,892,213
Peter Kolchinsky	6,995,858	Institution	14.99%	309,566,717
Steve Weber	4,433,058	Institution	9.50%	196,162,817
	1,584,431	Institution	3.39%	70,111,072
	1,210,618	Institution	2.59%	53,569,847
	1,189,212	Institution	2.55%	52,622,631
Theofanis Kolokotrones	1,167,382	Institution	2.50%	51,656,654
	826,907	Insider	1.77%	36,590,635
	824,582	Institution	1.77%	36,487,754
	725,443	Insider	1.55%	32,100,853

Top Mutual Fund Holders

# of Shares	Type	% Holding	Value
1,189,212	Institution	2.55%	52,622,631
824,582	Institution	1.77%	36,487,754
700,890	Institution	1.50%	31,014,383
338,579	Institution	0.73%	14,982,121
330,085	Institution	0.71%	14,606,261
242,494	Institution	0.52%	10,730,360
128,185	Institution	0.27%	5,672,186
107,281	Institution	0.23%	4,747,184
104,405	Institution	0.22%	4,619,921
76,979	Institution	0.16%	3,406,321

Top ETF Holders

Holder	# of Shares	Type	% Holding	Value
Vanguard	1,054,665	Institution	2.26%	41,269,041
iShares	558,742	Institution	1.20%	24,724,334
Vanguard	269,244	Institution	0.58%	10,535,518
iShares	224,635	Institution	0.48%	9,940,099
SPDR	223,052	Institution	0.48%	9,845,515
First Trust	218,574	Institution	0.47%	9,671,900
iShares	141,314	Institution	0.30%	6,253,145
Vanguard	128,711	Institution	0.28%	5,036,461
Schwab	126,803	Institution	0.27%	5,597,084
First Trust	107,837	Institution	0.23%	4,771,787

FAQ

Who Owns Septerna, Inc. (SEPN)?

According to the latest TipRanks data, approximately 0.03% of the company's stock is held by institutional investors, 26.54% is held by insiders, and 55.28% is held by retail investors.

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

According to the latest TipRanks data, approximately 0.03% 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 55.28% 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.