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

CUSIP: 81749D107

Q1 2026 13F Holders as of 31 Mar 2026

Security identity
Security type / class
Equity / Class A Common Stock, par value $0.0001 per share
Shares outstanding
38,452,198
Holder snapshot
Total 13F shares
19,944,838
Share change
+2,158,862
Total reported value
$40,487,661
Reported price per share
$2.03
Number of holders
55
Value change
+$4,178,612
Number of buys
13
Number of sells
28

Security key

81749D107

Report period

Q1 2026

Institutions

55

Top holders

10

SERA full security history Ownership snapshot Full 13F holder table Previous quarter: Q4 2025 SERA PROGNOSTICS, INC. SEC filings SERA PROGNOSTICS, INC. company facts

Broader feeds

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

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.

Lead holder
BAKER BROS. ADVISORS LP
13D/G signal
BAKER BROS. ADVISORS LP
Evidence rows
15
Latest as of
12 Mar 2026
13D/G 3/4/5 13F Lead comparable stake: 16% 13D/G row: BAKER BROS. ADVISORS LP Showing 1-6 of 15 holder rows.
Holder Evidence Ownership % Position 12M Net Δ As of
BAKER BROS. ADVISORS LP
13D/G 3/4/5 13F
10%+ Owner · Company
13D/G 3/4/5 13F
16%
$18,418,870
5,498,170 shares
 $0 12 Feb 2025
Whetstone Capital Advisors, LLC
13F 13D/G
Company
13F 13D/G
8.6%
from 13D/G
$10,206,153
3,459,713 shares
 — 31 Dec 2025
Chione Ltd
13D/G
13D/G
7.6%
$8,727,926
2,605,351 shares
 $0 11 Feb 2025
Aberdeen Group plc
13F 13D/G
Company
13F 13D/G
6.1%
from 13D/G
$6,725,112
2,279,699 shares
 — 31 Dec 2025
Vivo Capital IX, LLC
13D/G
13D/G
4.5%
$5,528,974
1,650,440 shares
 $0 31 Mar 2025
Paul Kearney
3/4/5
Chief Data Officer
3/4/5
0.43%
$334,480
163,961 shares
 -$195,220 12 Mar 2026
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 2026

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

Institutions
55
Shares
19,944,838
Rows available
55
Investor Option Weight % Change % Reported value * Price Shares Share Change Activity Report Period

* 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 failed the local validity check.

Compare Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders
56
Q1 2026 holders
55
Holder diff
-1
Investor Q4 2025 Shares Q1 2026 Shares Share Diff Share Chg % Q4 2025 value Q1 2026 value Value change Value Chg %

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

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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