SERA PROGNOSTICS, INC. - Class A Common Stock, par value $0.0001 per share (SERA)

Q: What does CUSIP 81749D107 represent in this 13F holders report?

CUSIP 81749D107 is the security identifier for SERA - SERA PROGNOSTICS, INC. - Class A Common Stock, par value $0.0001 per share used to aggregate holder disclosures.

Q: How many institutions held SERA - SERA PROGNOSTICS, INC. - Class A Common Stock, par value $0.0001 per share in Q2 2025?

57 institutional investors reported SERA - SERA PROGNOSTICS, INC. - Class A Common Stock, par value $0.0001 per share for Q2 2025. Use the holders table for investor-level position and value details.

CUSIP: 81749D107

Q2 2025 13F Holders as of 30 Jun 2025

Security type / class: Equity / Class A Common Stock, par value $0.0001 per share
Total 13F shares: 18,609,445
Total 13F value: $51,523,609
Share change: -1,587,341
Put/Call ratio: 0%
SEC-reported price per share: $2.77
Number of holders: 57
Value change: -$7,499,389
Number of buys: 27
Number of sells: 48
Shares outstanding: 38,452,198

Security key

81749D107

Report period

Q2 2025

Institutions

Top holders

SERA full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2025 Previous quarter: Q1 2025 SERA PROGNOSTICS, INC. SEC filings SERA PROGNOSTICS, INC. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 81749D107

Newer quarter: Q3 2025 Previous quarter: Q1 2025

Recent filing periods:

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024

Ownership snapshot

Top reported holders of SERA - SERA PROGNOSTICS, INC. - Class A Common Stock, par value $0.0001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

BAKER BROS. ADVISORS LP

Disclosed value leader

BAKER BROS. ADVISORS LP

Comparable rows

15/15

Latest evidence

30 Jun 2025

13F 13D/G 3/4/5 Lead comparable stake: 16% 13D/G row: BAKER BROS. ADVISORS LP Showing 1-6 of 15 holder rows.

Quick read

BAKER BROS. ADVISORS LP leads the comparable SEC ownership view at 16%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BAKER BROS. ADVISORS LP's linked filing trail.

Comparable ownership Top 5

BAKER BROS. ADVISORS LP 16%

Chione Ltd 7.6%

Aberdeen Group plc 6.1%

Vivo Capital IX, LLC 4.5%

RA CAPITAL MANAGEMENT, L.P. 7.9%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BAKER BROS. ADVISORS LP	13F 13D/G 3/4/5 Company · 10%+ Owner 13F 13D/G 3/4/5	16% from 13D/G	$20,233,266 5,498,170 shares	—	31 Mar 2025
Chione Ltd	13D/G 13D/G	7.6%	$8,727,926 2,605,351 shares	$0	11 Feb 2025
Aberdeen Group plc	13D/G 13F Company 13D/G 13F	6.1%	$6,325,722 2,227,367 shares	$0	30 Jun 2025
Vivo Capital IX, LLC	13D/G 13D/G	4.5%	$5,528,974 1,650,440 shares	$0	31 Mar 2025
RA CAPITAL MANAGEMENT, L.P.	13F Company 13F	7.9%	$11,160,733 3,032,808 shares	—	31 Mar 2025
Vivo Capital, LLC	13F Company 13F	4.3%	$6,073,619 1,650,440 shares	—	31 Mar 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

18,609,445

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2025 vs Q1 2025 Across Filers

Q1 2025 holders

Q2 2025 holders

Holder diff

-13

Investor	Q1 2025 Shares	Q2 2025 Shares	Share Diff	Share Chg %	Q1 2025 value	Q2 2025 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend