SERA PROGNOSTICS, INC. - Class A Common Stock $0.0001 par value 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 $0.0001 par value per share used to aggregate holder disclosures.

Q: How many institutions held SERA - SERA PROGNOSTICS, INC. - Class A Common Stock $0.0001 par value per share in Q1 2023?

35 institutional investors reported SERA - SERA PROGNOSTICS, INC. - Class A Common Stock $0.0001 par value per share for Q1 2023. Use the holders table for investor-level position and value details.

CUSIP: 81749D107

Q1 2023 13F Holders as of 31 Mar 2023

Security type / class: Equity / Class A Common Stock $0.0001 par value per share
Total 13F shares: 9,529,218
Total 13F value: $36,496,581
Share change: +2,486,570
SEC-reported price per share: $3.83
Number of holders: 35
Value change: +$11,033,423
Number of buys: 24
Number of sells: 11
Shares outstanding: 38,190,361

Security key

81749D107

Report period

Q1 2023

Institutions

Top holders

SERA full security history Ownership snapshot Full 13F holder table Newer quarter: Q4 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: Q4 2025

Recent filing periods:

Q3 2026 Q4 2025

Ownership snapshot

Top reported holders of SERA - SERA PROGNOSTICS, INC. - Class A Common Stock $0.0001 par value 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

Blue Ox Healthcare Partne...

Disclosed value leader

INTERWEST VENTURE MANAGEM...

Comparable rows

0/15

Latest evidence

31 Dec 2022

3/4/5 13F Highest disclosed value: $3,044,464 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

INTERWEST VENTURE MANAGEMENT CO has the largest disclosed position value at $3.04M.

0 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 INTERWEST VENTURE MANAGEMENT CO's linked filing trail.

Disclosed position value Top 5

Blue Ox Healthcare Partners, LLC $1.34M

INTERWEST VENTURE MANAGEMENT CO $3.04M

Vivo Capital, LLC $2.34M

Douglas Carl Fisher $1.15M

Fosun International Ltd $698.2K

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

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

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Blue Ox Healthcare Partners, LLC	3/4/5 10%+ Owner 3/4/5	— denominator unverified	$1,339,791 256,665 shares	—	18 Jul 2022
INTERWEST VENTURE MANAGEMENT CO	13F Company 13F	— denominator unverified	$3,044,464 2,416,241 shares	—	31 Dec 2022
Vivo Capital, LLC	13F Company 13F	— denominator unverified	$2,339,000 1,856,011 shares	—	31 Dec 2022
Douglas Carl Fisher	3/4/5 Chief Business Officer 3/4/5	— denominator unverified	$1,151,334 220,562 shares	—	10 Jan 2022
Fosun International Ltd	13F Company 13F	— denominator unverified	$698,226 554,148 shares	—	31 Dec 2022
CAPTRUST FINANCIAL ADVISORS	13F Company 13F	— denominator unverified	$477,839 379,237 shares	—	31 Dec 2022

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 Q1 2023

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

Institutions

9,529,218

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 Q1 2023 vs Q4 2025 Across Filers

Q4 2025 holders

Q1 2023 holders

Holder diff

-21

Investor	Q4 2025 Shares	Q1 2023 Shares	Share Diff	Share Chg %	Q4 2025 value	Q1 2023 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend