Vault-13

SERA PROGNOSTICS INC SERA

CLASS A COM · Common Stock · CUSIP 81749D107

36 institutional holders
8,698,1208.7m shares reported held*
$13.9mreported value*

* 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.

HolderStakeChangeShares Last filed
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% new 5.5m≈ $10.0m 2025-02-14
Whetstone Capital Advisors, LLC 13G · passive investor -0.6 pts · filed 2026-05-01 8.6% -0.6 pts 3.3m≈ $6.0m 2026-05-01
Chione Ltd 13D · may seek influence filed 2025-02-14 7.6% 2.6m≈ $4.7m 2025-02-14
Aberdeen Group plc 13G · institution +1.1 pts · filed 2026-07-15 7.2% +1.1 pts 2.8m≈ $5.0m 2026-07-15

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)

BuyingSelling
101Q4 20: 0 buyingQ4 20: 0 sellingQ1 21: 0 buyingQ1 21: 0 sellingQ1 21Q2 21: 0 buyingQ2 21: 0 sellingQ3 21: 0 buyingQ3 21: 0 sellingQ3 21Q4 21: 0 buyingQ4 21: 0 sellingQ1 22: 0 buyingQ1 22: 1 sellingQ1 22Q2 22: 1 buyingQ2 22: 1 sellingQ3 22: 0 buyingQ3 22: 1 sellingQ3 22
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20200—0——
Q1 20210—0——
Q2 20210—0——
Q3 20210—0——
Q4 20210—0——
Q1 20220—1$30.9k—
Q2 20221$9.6k1$75.4k—
Q3 20220—1$22.6k—
DateInsiderTradeSharesPrice ValueTheir holding
2022-07-27 Boniface John J. Chief Scientific Officer Sold 1,000 $2.22 $2.2k1.0k shares -2%
2022-07-26 Boniface John J. Chief Scientific Officer Sold 2,725 $2.15 $5.9k2.7k shares -6%
2022-07-19 Boniface John J. Chief Scientific Officer Sold 2,725 $1.86 $5.1k2.7k shares -5%
2022-07-12 Boniface John J. Chief Scientific Officer Sold 2,725 $1.84 $5.0k2.7k shares -5%
2022-07-05 Boniface John J. Chief Scientific Officer Sold 2,725 $1.63 $4.4k2.7k shares -5%

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

#ManagerLocationShares Value% of their portfolioChangeShares change
1 INTERWEST VENTURE MANAGEMENT CO 11.92% of their portfolio LOS ALTOS, CA 2,416,2412.4m $3.9m $3.9m 11.92% —
2 Vivo Capital, LLC 0.33% of their portfolio Palo Alto, CA 1,856,0111.9m $3.0m $3.0m 0.33% —
3 SANDERS MORRIS HARRIS LLC 0.54% of their portfolio Houston, TX 1,389,5731.4m $2.2m $2.2m 0.54% —
4 Fosun International Ltd 0.09% of their portfolio HONG KONG, F4 554,148554.1k $887.0k $887.0k 0.09% —
5 Skye Global Management LP 0.02% of their portfolio WEST PALM BEACH, FL 526,000526.0k $842.0k $842.0k 0.02% —
6 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 312,440312.4k $500.0k $500.0k 0.00% —
7 AWM Investment Company, Inc. 0.06% of their portfolio NEW YORK, NY 240,646240.6k $385.0k $385.0k 0.06% —
8 CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio RALEIGH, NC 238,099238.1k $381.0k $381.0k 0.00% —
9 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 211,977212.0k $339.0k $339.0k 0.00% —
10 BAKER BROS. ADVISORS LP 0.00% of their portfolio NEW YORK, NY 201,562201.6k $322.0k $322.0k 0.00% —
11 Parian Global Management LP 0.79% of their portfolio POUND RIDGE, NY 151,698151.7k $243.0k $243.0k 0.79% —
12 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 123,846123.8k $198.0k $198.0k 0.00% —
13 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 71,55271.6k $114.0k $114.0k 0.00% —
14 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 67,34067.3k $108.0k $108.0k 0.00% —
15 Requisite Capital Management, LLC 0.03% of their portfolio DALLAS, TX 55,64855.6k $89.0k $89.0k 0.03% —
16 BlackRock Inc. 0.00% of their portfolio New York, NY 55,61955.6k $89.0k $89.0k 0.00% —
17 MAI Capital Management 0.00% of their portfolio INDEPENDENCE, OH 49,50349.5k $79.0k $79.0k 0.00% —
18 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 28,91728.9k $46.0k $46.0k 0.00% —
19 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 23,52723.5k $38.0k $38.0k 0.00% —
20 Ensign Peak Advisors, Inc 0.00% of their portfolio SALT LAKE CITY, UT 18,10818.1k $29.0k $29.0k 0.00% —
21 Lesa Sroufe & Co 0.03% of their portfolio SEATTLE, WA 16,50616.5k $26.0k $26.0k 0.03% —
22 ASPIRIANT, LLC 0.00% of their portfolio San Francisco, CA 16,47216.5k $26.0k $26.0k 0.00% —
23 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 15,82615.8k $25.0k $25.0k 0.00% —
24 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 12,55812.6k $20.0k $20.0k 0.00% —
25 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 10,24810.2k $17.0k $17.0k 0.00% —
26 SEGALL BRYANT & HAMILL, LLC 0.00% of their portfolio CHICAGO, IL 10,00010.0k $16.0k $16.0k 0.00% —
27 UBS Group AG 0.00% of their portfolio ZURICH, V8 9,8059.8k $16.0k $16.0k 0.00% —
28 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 8,1288.1k $13.0k $13.0k 0.00% —
29 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 2,1582.2k $3.0k $3.0k 0.00% —
30 FMR LLC 0.00% of their portfolio BOSTON, MA 1,5501.6k $2.0k $2.0k 0.00% —
31 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 1,3101.3k $2.1k $2.1k 0.00% —
32 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 432432 $1.0k $1.0k 0.00% —
33 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 379379 $0 $0 0.00% —
34 China Universal Asset Management Co., Ltd. 0.00% of their portfolio SHANGHAI, F4 277277 $0 $0 0.00% —
35 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 1616 $0 $0 0.00% —
36 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% —