Security key
81749D107
SERA PROGNOSTICS, INC. - Class A Common Stock, par value $0.0001 per share (SERA)
CUSIP: 81749D107
Q4 2025 13F Holders as of 31 Dec 2025
- Type / Class
- Equity / Class A Common Stock, par value $0.0001 per share
- Shares outstanding
- 38,452,198
- Total 13F shares
- 17,640,480
- Share change
- -503,358
- Total reported value
- $52,067,649
- Price per share
- $2.95
- Number of holders
- 56
- Value change
- -$1,545,175
- Number of buys
- 19
- Number of sells
- 21
Report period
Q4 2025
Institutions
56
Top holders
10
SERA full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
SERA PROGNOSTICS, INC. SEC filings
SERA PROGNOSTICS, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 81749D107
Recent filing periods:
Ownership snapshot
Top shareholders 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
50
Latest as of
30 Sep 2025
13D/G
3/4/5
13F
Lead comparable stake: 16%
13D/G row: BAKER BROS. ADVISORS LP
Showing first 8 of 50 holder rows.
Open remaining rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BAKER BROS. ADVISORS LP |
13D/G
3/4/5
13F
10%+ Owner · Company
|
16%
|
$18,418,870
5,498,170 shares
|
$0 | 12 Feb 2025 |
| Chione Ltd |
13D/G
|
7.6%
|
$8,727,926
2,605,351 shares
|
$0 | 11 Feb 2025 |
| Aberdeen Group plc |
13F
13D/G
Company
|
6.1%
from 13D/G
|
$6,975,879
2,279,699 shares
|
— | 30 Sep 2025 |
| Vivo Capital IX, LLC |
13D/G
|
4.5%
|
$5,528,974
1,650,440 shares
|
$0 | 31 Mar 2025 |
| Whetstone Capital Advisors, LLC |
13F
Company
|
9.4%
|
$11,115,055
3,632,371 shares
|
— | 30 Sep 2025 |
| Vivo Capital, LLC |
13F
Company
|
4.3%
|
$5,050,346
1,650,440 shares
|
— | 30 Sep 2025 |
| VANGUARD GROUP INC |
13F
Company
|
3.2%
|
$3,724,601
1,217,190 shares
|
— | 30 Sep 2025 |
| CITADEL ADVISORS LLC |
13F
Company
|
1.7%
|
$2,000,462
653,746 shares
|
— | 30 Sep 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 Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
56
Shares
17,640,480
Rows loaded
56
| 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. An asterisk next to the price means the price is likely invalid.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
61
Q4 2025 holders
56
Holder diff
-5
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend