SERA PROGNOSTICS INC SERA
CLASS A COM · Common Stock · CUSIP 81749D107
- SectorHealth care
- IndustryServices-Medical Laboratories
- HeadquartersSalt Lake City, UT
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $1.60.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
BAKER BROS. ADVISORS LP
13D · may seek influence
new · filed 2025-02-14
Stated purposeThe disclosure in Item 3, Item 5 and Item 6 below are incorporated herein by reference. On February 10, 2025, the Issuer entered into an underwriting agreement (the "Underwriting Agreement") with Jefferies LLC, TD Securities (USA) LLC and William Blair & Company, L.L.C., as representatives of the several underwriters named therein (the "Underwriters"), related to the public offering (the "Offering") of 1,250,000 shares of Common Stock at a price to the public of $4.00 per share and 11,250,000 Pre-Funded Warrants at a price to the public of $3.9999 per share. In addition, the Issuer granted the Underwriters an option exercisable for 30 days from the date of the Underwriting Agreement to purchase, at the public offering price less any underwriting discounts and commissions, up to an additi… Full filing |
16.1% |
| Whetstone Capital Advisors, LLC 13G · passive investor -0.6 pts · filed 2026-05-01 | 8.6% |
| Chione Ltd 13D · may seek influence filed 2025-02-14 | 7.6% |
| Aberdeen Group plc 13G · institution +1.1 pts · filed 2026-07-15 | 7.2% |
Insider purchases and sales in Q3 2022
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2020 | 0 | — | 0 | — | — |
| Q1 2021 | 0 | — | 0 | — | — |
| Q2 2021 | 0 | — | 0 | — | — |
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 0 | — | 0 | — | — |
| Q1 2022 | 0 | — | 1 | $30.9k | — |
| Q2 2022 | 1 | $9.6k | 1 | $75.4k | — |
| Q3 2022 | 0 | — | 1 | $22.6k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2022-07-27 | Boniface John J. Chief Scientific Officer | Sold | $2.2k1.0k shares |
| 2022-07-26 | Boniface John J. Chief Scientific Officer | Sold | $5.9k2.7k shares |
| 2022-07-19 | Boniface John J. Chief Scientific Officer | Sold | $5.1k2.7k shares |
| 2022-07-12 | Boniface John J. Chief Scientific Officer | Sold | $5.0k2.7k shares |
| 2022-07-05 | Boniface John J. Chief Scientific Officer | Sold | $4.4k2.7k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q3 2022
| Manager | Shares | Change |
|---|---|---|
| INTERWEST VENTURE MANAGEMENT CO 11.92% of their portfolio | 2.4m $3.9m | — |
| Vivo Capital, LLC 0.33% of their portfolio | 1.9m $3.0m | — |
| SANDERS MORRIS HARRIS LLC 0.54% of their portfolio | 1.4m $2.2m | — |
| Fosun International Ltd 0.09% of their portfolio | 554.1k $887.0k | — |
| Skye Global Management LP 0.02% of their portfolio | 526.0k $842.0k | — |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 312.4k $500.0k | — |
| AWM Investment Company, Inc. 0.06% of their portfolio | 240.6k $385.0k | — |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 238.1k $381.0k | — |
| VANGUARD GROUP INC 0.00% of their portfolio | 212.0k $339.0k | — |
| BAKER BROS. ADVISORS LP 0.00% of their portfolio | 201.6k $322.0k | — |
| Parian Global Management LP 0.79% of their portfolio | 151.7k $243.0k | — |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 123.8k $198.0k | — |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 71.6k $114.0k | — |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 67.3k $108.0k | — |
| Requisite Capital Management, LLC 0.03% of their portfolio | 55.6k $89.0k | — |
| BlackRock Inc. 0.00% of their portfolio | 55.6k $89.0k | — |
| MAI Capital Management 0.00% of their portfolio | 49.5k $79.0k | — |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 28.9k $46.0k | — |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 23.5k $38.0k | — |
| Ensign Peak Advisors, Inc 0.00% of their portfolio | 18.1k $29.0k | — |
| Lesa Sroufe & Co 0.03% of their portfolio | 16.5k $26.0k | — |
| ASPIRIANT, LLC 0.00% of their portfolio | 16.5k $26.0k | — |
| NORTHERN TRUST CORP 0.00% of their portfolio | 15.8k $25.0k | — |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 12.6k $20.0k | — |
| MORGAN STANLEY 0.00% of their portfolio | 10.2k $17.0k | — |
| SEGALL BRYANT & HAMILL, LLC 0.00% of their portfolio | 10.0k $16.0k | — |
| UBS Group AG 0.00% of their portfolio | 9.8k $16.0k | — |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 8.1k $13.0k | — |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 2.2k $3.0k | — |
| FMR LLC 0.00% of their portfolio | 1.6k $2.0k | — |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 1.3k $2.1k | — |
| CITIGROUP INC 0.00% of their portfolio | 432 $1.0k | — |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 379 $0 | — |
| China Universal Asset Management Co., Ltd. 0.00% of their portfolio | 277 $0 | — |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 16 $0 | — |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio | 0 $0 | — |