SERA · Sera Prognostics, Inc. · Shareholders & Ownership

$2.07 +0.02 (+0.98%) Q2 2026 earnings call transcript

Market Cap

$80.87M

39.45M

Volume · Oct 28 516 Avg daily vol (3M) 22.9K

Every disclosed holder of SERA in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns SERA

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	52	19,789,767	50.16%	Yes
Insiders (Forms 3, 4, 5)	0	0	0.00%	No
13D/G-only blocks	5	7,617,930	19.31%	Yes
Remaining	—	12,041,769	30.52%	Rest
Registered funds (N-PORT, not summed)	19	4,518,561	11.45%	No

Shares outstanding: 39,449,466, the issuer's latest cover-page count restated onto today's split basis.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of SERA

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	BAKER BROS. ADVISORS LP 13F CIK 1263508 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	5,498,170	13.94%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
1.1	BAKER BROS. ADVISORS LP Insider CIK 1263508 · Feb 12, 2025 Director, 10% Owner, issuer-wide, not summed	5,498,170	13.94%	—	Feb 12, 2025	Director, 10% Owner, issuer-wide, not summed
2	Whetstone Capital Advisors, LLC 13F CIK 1607278 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,306,889	8.38%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
3	Aberdeen Group plc 13F CIK 1716774 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	2,753,525	6.98%	+202,750	Jun 30, 2026	carried, not yet filed for the newest quarter
3.1	Aberdeen Group plc 13G CIK 1716774 · Holding company · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	2,753,525	6.98%	+526,158	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
4	Chione Ltd. 13D CIK 1590232 · Unknown · Feb 11, 2025 Item 4 purpose: not restated by this amendment, the earlier 13D's purpose stands	2,605,351	6.60%	—	Feb 11, 2025
5	PSP Research LLC 13F CIK 2106939 · Unknown · Sep 30, 2026	2,396,685	6.08%	+2,396,685	Sep 30, 2026
6	Schindel Yair Chaim 13G CIK 1823758 · Unknown · Sep 30, 2024 Rule 13d-1(d), exempt investor	1,911,332	4.85%	-1,067,179	Sep 30, 2024	Rule 13d-1(d), exempt investor
7	Vivo Capital IX, LLC 13G CIK 1750698 · Unknown · Mar 31, 2025 Rule 13d-1(c), passive investor	1,650,440	4.18%	0	Mar 31, 2025	Rule 13d-1(c), passive investor
8	Vivo Capital, LLC 13F CIK 1674712 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,650,440	4.18%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
9	abrdn Healthcare Opportunities Fund Fund · Registered fund · Jun 30, 2026 abrdn Healthcare Opportunities Fund, not summed	1,355,853	3.44%	—	Jun 30, 2026	abrdn Healthcare Opportunities Fund, not summed
9.1	abrdn Healthcare Investors Fund · Registered fund · Jun 30, 2026 abrdn Healthcare Investors, not summed	1,378,048	3.49%	—	Jun 30, 2026	abrdn Healthcare Investors, not summed
10	(Voluntary) Domain Partners VIII, L.P. 13G CIK 1465144 · Unknown · Dec 31, 2023 Rule 13d-1(d), exempt investor	1,324,549	3.36%	—	Dec 31, 2023	Rule 13d-1(d), exempt investor
11	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,297,792	3.29%	+93,677	Jun 30, 2026	carried, not yet filed for the newest quarter
12	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	887,016	2.25%	0	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
13	CRITCHFIELD GREGORY C Insider CIK 1191080 · Jul 10, 2026 Director, issuer-wide, not summed	846,886	2.15%	+24,020	Jul 10, 2026	Director, issuer-wide, not summed
14	Lindgardt Zhenya Insider CIK 1891299 · Sep 10, 2026 Director, Chief Executive Officer, issuer-wide, not summed	837,848	2.12%	-7,022	Sep 10, 2026	Director, Chief Executive Officer, issuer-wide, not summed
15	CAPTRUST FINANCIAL ADVISORS 13F CIK 1512024 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	535,755	1.36%	-1,006	Jun 30, 2026	carried, not yet filed for the newest quarter
16	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	380,212	0.96%	+75,757	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
17	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	348,967	0.88%	-14,650	Jun 30, 2026	carried, not yet filed for the newest quarter
18	SANDERS MORRIS HARRIS LLC 13F CIK 1053994 · Broker-dealer · Sep 30, 2026	314,950	0.80%	+314,950	Sep 30, 2026
19	Aerts Austin Insider CIK 1979974 · Jun 11, 2026 Chief Financial Officer, issuer-wide, not summed	301,190	0.76%	-2,037	Jun 11, 2026	Chief Financial Officer, issuer-wide, not summed
20	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	221,369	0.56%	+25,264	Jun 30, 2026	carried, not yet filed for the newest quarter
20.1	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	102,359	0.26%	+23,149	Jun 30, 2026	iShares Trust, not summed
21	AWM Investment Company, Inc. 13F CIK 1535264 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	207,382	0.53%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
22	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	170,908	0.43%	+1,247	Jun 30, 2026	carried, not yet filed for the newest quarter
23	Kearney Paul Insider CIK 1888075 · Mar 11, 2026 Chief Data Officer, issuer-wide, not summed	163,961	0.42%	-1,396	Mar 11, 2026	Chief Data Officer, issuer-wide, not summed
24	Jackson Benjamin Insider CIK 1779964 · Sep 10, 2026 General Counsel, issuer-wide, not summed	159,566	0.40%	-2,190	Sep 10, 2026	General Counsel, issuer-wide, not summed
25	Boniface John J. Insider CIK 1870674 · Mar 11, 2026 Chief Scientific Officer, issuer-wide, not summed	145,842	0.37%	-1,517	Mar 11, 2026	Chief Scientific Officer, issuer-wide, not summed
26	InterWest Partners X, LP (“IWP X”) 13G CIK 1443898 · Unknown · Dec 31, 2023 Rule 13d-1(d), exempt investor	126,258	0.32%	—	Dec 31, 2023	Rule 13d-1(d), exempt investor
27	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	124,792	0.32%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
28	Gleason Scott Insider CIK 1883387 · Aug 31, 2026 Interim CFO/SVP IR, issuer-wide, not summed	117,924	0.30%	—	Aug 31, 2026	Interim CFO/SVP IR, issuer-wide, not summed
29	Inglis Tiffany Eul Davis Insider CIK 2091798 · Oct 12, 2026 Chief Medical Officer, issuer-wide, not summed	83,565	0.21%	-8,024	Oct 12, 2026	Chief Medical Officer, issuer-wide, not summed
30	Mirza Mansoor Raza Insider CIK 1588389 · Jul 10, 2026 Chief Medical Officer, issuer-wide, not summed	81,937	0.21%	+24,197	Jul 10, 2026	Chief Medical Officer, issuer-wide, not summed
31	Phillips Joshua Insider CIK 1871555 · Jul 10, 2026 Director, issuer-wide, not summed	81,691	0.21%	+24,686	Jul 10, 2026	Director, issuer-wide, not summed
32	Harrison Robert Gardner Insider CIK 1421563 · Mar 11, 2026 Chief Information Officer, issuer-wide, not summed	76,712	0.19%	-716	Mar 11, 2026	Chief Information Officer, issuer-wide, not summed
33	Anderson Dyaarl Lee Jr. Insider CIK 2072324 · Sep 10, 2026 Chief Commercial Officer, issuer-wide, not summed	76,198	0.19%	-1,800	Sep 10, 2026	Chief Commercial Officer, issuer-wide, not summed
34	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	73,986	0.19%	-17,518	Jun 30, 2026	carried, not yet filed for the newest quarter
35	Perigon Wealth Management, LLC 13F CIK 1575239 · Registered investment adviser · Sep 30, 2026	72,685	0.18%	0	Sep 30, 2026
36	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	68,595	0.17%	-27,940	Jun 30, 2026	carried, not yet filed for the newest quarter
37	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	60,927	0.15%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
38	Kamdar Kim P. Insider CIK 1535065 · Jul 10, 2026 Director, issuer-wide, not summed	58,420	0.15%	+25,847	Jul 10, 2026	Director, issuer-wide, not summed
39	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	55,705	0.14%	+10,000	Jun 30, 2026	carried, not yet filed for the newest quarter
39.1	Ultra-Small Company Market Fund Fund S000004424 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	51,105	0.13%	+10,000	Jun 30, 2026	Bridgeway Funds, Inc., not summed
40	Requisite Capital Management, LLC 13F CIK 1730573 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	55,648	0.14%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
41	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	50,972	0.13%	-54,045	Jun 30, 2026	carried, not yet filed for the newest quarter
42	Qube Research & Technologies Ltd 13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	50,871	0.13%	+30,954	Jun 30, 2026	carried, not yet filed for the newest quarter
43	Ballentine Partners, LLC 13F CIK 1374889 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	49,664	0.13%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
44	Barlow Jane F Insider CIK 1736026 · Jul 10, 2026 Director, issuer-wide, not summed	47,088	0.12%	+24,375	Jul 10, 2026	Director, issuer-wide, not summed
45	Capone Mark Christopher Insider CIK 1352413 · Jul 10, 2026 Director, issuer-wide, not summed	44,379	0.11%	—	Jul 10, 2026	Director, issuer-wide, not summed
46	Twelve Points Wealth Management LLC 13F CIK 1877090 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	43,388	0.11%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
47	HighTower Advisors, LLC 13F CIK 1462245 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	42,234	0.11%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
48	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	41,411	0.11%	-207,498	Jun 30, 2026	carried, not yet filed for the newest quarter
49	Lawrence Sandra AJ Insider CIK 1306386 · Jul 10, 2026 Director, issuer-wide, not summed	41,175	0.10%	+24,702	Jul 10, 2026	Director, issuer-wide, not summed
50	Catalyst Funds Management Pty Ltd 13F CIK 1896150 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	38,890	0.10%	+15,326	Jun 30, 2026	carried, not yet filed for the newest quarter

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 85 holders

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Key facts CIK 1534969 CUSIP 81749D107 13F (30d) 11 filings 11 filers Visit website Investor relations