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 ≈ $6.05.
Trends to Q4 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 36 |
| Q4 2022 | 30 |
| Q1 2023 | 36 |
| Q2 2023 | 34 |
| Q3 2023 | 29 |
| Q4 2023 | 48 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 7 | 24 |
| Q1 2023 | 24 | 11 |
| Q2 2023 | 7 | 12 |
| Q3 2023 | 8 | 12 |
| Q4 2023 | 36 | 10 |
Biggest buyers
| BAKER BROS. ADVISORS LP | Added | +3.9m |
| AWM Investment Company, Inc. | New | +374.9k |
| Ensign Peak Advisors, Inc | Added | +237.9k |
| PRICE T ROWE ASSOCIATES INC /MD/ | New | +151.9k |
| VANGUARD GROUP INC | Added | +122.7k |
| JPMORGAN CHASE & CO | Added | +110.6k |
| Informed Momentum Co LLC | New | +85.6k |
| Perigon Wealth Management, LLC | New | +85.2k |
| Bank of New York Mellon Corp | Added | +73.7k |
| CITIGROUP INC | New | +69.3k |
Biggest sellers
| Fosun International Ltd | Sold out | -554.1k |
| SANDERS MORRIS HARRIS LLC | Sold out | -445.1k |
| Vivo Capital, LLC | Reduced | -205.6k |
| Acuitas Investments, LLC | Reduced | -51.9k |
| CAPTRUST FINANCIAL ADVISORS | Reduced | -23.2k |
| Prime Capital Investment Advisors, LLC | Sold out | -21.0k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Reduced | -10.0k |
| UBS Group AG | Reduced | -4.8k |
| Marquette Asset Management, LLC | Reduced | -3.5k |
| MAI Capital Management | Reduced | -252 |
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 Q4 2023
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 |
|---|---|---|---|---|---|
| Q1 2022 | 0 | — | 1 | $30.9k | — |
| Q2 2022 | 1 | $9.6k | 1 | $75.4k | — |
| Q3 2022 | 0 | — | 1 | $22.6k | — |
| Q4 2022 | 0 | — | 0 | — | — |
| Q1 2023 | 0 | — | 0 | — | — |
| Q2 2023 | 0 | — | 1 | $16.1k | — |
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 2 | $76.2k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2023-12-07 | Jackson Benjamin General Counsel | Sold | $52.2k10.0k shares |
| 2023-12-07 | Boniface John J. Chief Scientific Officer | Sold | $24.0k5.0k 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, Q4 2023
| Manager | Shares | Change |
|---|---|---|
| BAKER BROS. ADVISORS LP 0.37% of their portfolio | 5.4m $32.5m | Added +3.9m |
| Vivo Capital, LLC 0.81% of their portfolio | 1.7m $9.9m | Reduced -205.6k |
| VANGUARD GROUP INC 0.00% of their portfolio | 909.5k $5.4m | Added +122.7k |
| CAPTRUST FINANCIAL ADVISORS 0.01% of their portfolio | 399.6k $2.4m | Reduced -23.2k |
| AWM Investment Company, Inc. 0.29% of their portfolio | 374.9k $2.2m | New |
| Ensign Peak Advisors, Inc 0.00% of their portfolio | 256.0k $1.5m | Added +237.9k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 202.6k $1.2m | Added +24.3k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 151.9k $909.0k | New |
| Acuitas Investments, LLC 0.78% of their portfolio | 121.3k $1.5m | Reduced -51.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 111.6k $667.2k | Added +110.6k |
| BlackRock Inc. 0.00% of their portfolio | 88.0k $526.0k | Added +30.3k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 86.7k $518.2k | Added +73.7k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 86.1k $514.9k | Reduced -10.0k |
| Informed Momentum Co LLC 0.09% of their portfolio | 85.6k $511.9k | New |
| Perigon Wealth Management, LLC 0.02% of their portfolio | 85.2k $509.4k | New |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 70.6k $422.0k | Unchanged |
| CITIGROUP INC 0.00% of their portfolio | 69.3k $414.7k | New |
| Lexington Partners L.P. 0.26% of their portfolio | 65.4k $391.2k | New |
| STATE STREET CORP 0.00% of their portfolio | 65.0k $388.7k | Added +14.8k |
| 683 Capital Management, LLC 0.03% of their portfolio | 56.2k $335.9k | New |
| Requisite Capital Management, LLC 0.08% of their portfolio | 55.6k $332.8k | Unchanged |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 54.9k $328.5k | Added +54.9k |
| OMERS ADMINISTRATION Corp 0.00% of their portfolio | 53.9k $322.3k | New |
| MORGAN STANLEY 0.00% of their portfolio | 53.6k $320.4k | Added +49.6k |
| Railway Pension Investments Ltd 0.00% of their portfolio | 47.6k $284.5k | New |
| Vanderbilt University 0.07% of their portfolio | 47.6k $284.5k | New |
| RESOURCE CONSULTING GROUP INC 0.05% of their portfolio | 44.2k $264.5k | New |
| CWM, LLC 0.00% of their portfolio | 40.5k $242.0k | New |
| Man Group plc 0.00% of their portfolio | 39.9k $238.9k | New |
| NORTHERN TRUST CORP 0.00% of their portfolio | 32.8k $196.4k | Added +5.7k |
| Mission Creek Capital Partners, Inc. 0.05% of their portfolio | 32.6k $194.8k | New |
| Marquette Asset Management, LLC 0.04% of their portfolio | 32.1k $192.2k | Reduced -3.5k |
| Corient Private Wealth LP 0.00% of their portfolio | 30.0k $179.4k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 29.9k $178.9k | New |
| HighVista Strategies LLC 0.04% of their portfolio | 20.5k $122.5k | New |
| MAI Capital Management 0.00% of their portfolio | 16.7k $100.1k | Reduced -252 |
| UBS Group AG 0.00% of their portfolio | 16.2k $97.1k | Reduced -4.8k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 15.0k $89.6k | Unchanged |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 14.7k $88.0k | New |
| Sterling Investment Advisors, Ltd. 0.03% of their portfolio | 13.5k $80.7k | New |
| Y-Intercept (Hong Kong) Ltd 0.01% of their portfolio | 13.2k $78.9k | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 12.3k $73.8k | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 12.0k $71.8k | Unchanged |
| BOOTHBAY FUND MANAGEMENT, LLC 0.00% of their portfolio | 11.3k $67.5k | New |
| StepStone Group LP 0.01% of their portfolio | 10.2k $61.2k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 147 $879 | Added +10 |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 99 $1.0k | Added +16 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio | 0 $0 | Unchanged |