Vault-13

SERA PROGNOSTICS INC SERA

CLASS A COM · Common Stock · CUSIP 81749D107

48 institutional holders +19 vs Q3 2023
11,121,50211.1m shares reported held*
$67.3mreported value*
23 new 13 added 7 reduced 3 sold out net bought ≈ $28.3m (+4.7m shares)

* 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

0204060Q3 22: 36Q4 22: 30Q1 23: 36Q2 23: 34Q3 23: 29Q4 23: 4848Q3 22Q4 22Q1 23Q2 23Q3 23Q4 23
Numbers
QuarterHolders
Q3 202236
Q4 202230
Q1 202336
Q2 202334
Q3 202329
Q4 202348

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
40040Q4 22: 7 bought or addedQ4 22: 24 cut or sold outQ4 22Q1 23: 24 bought or addedQ1 23: 11 cut or sold outQ1 23Q2 23: 7 bought or addedQ2 23: 12 cut or sold outQ2 23Q3 23: 8 bought or addedQ3 23: 12 cut or sold outQ3 23Q4 23: 36 bought or addedQ4 23: 10 cut or sold outQ4 23
Numbers
QuarterBought or addedCut or sold out
Q4 2022724
Q1 20232411
Q2 2023712
Q3 2023812
Q4 20233610

Biggest buyers

BAKER BROS. ADVISORS LP Added +3,919,057+3.9m
AWM Investment Company, Inc. New +374,902+374.9k
Ensign Peak Advisors, Inc Added +237,872+237.9k
PRICE T ROWE ASSOCIATES INC /MD/ New +151,933+151.9k
VANGUARD GROUP INC Added +122,710+122.7k
JPMORGAN CHASE & CO Added +110,619+110.6k
Informed Momentum Co LLC New +85,597+85.6k
Perigon Wealth Management, LLC New +85,185+85.2k
Bank of New York Mellon Corp Added +73,658+73.7k
CITIGROUP INC New +69,349+69.3k

Biggest sellers

Fosun International Ltd Sold out -554,148-554.1k
SANDERS MORRIS HARRIS LLC Sold out -445,105-445.1k
Vivo Capital, LLC Reduced -205,571-205.6k
Acuitas Investments, LLC Reduced -51,937-51.9k
CAPTRUST FINANCIAL ADVISORS Reduced -23,216-23.2k
Prime Capital Investment Advisors, LLC Sold out -21,000-21.0k
BRIDGEWAY CAPITAL MANAGEMENT, LLC Reduced -10,000-10.0k
UBS Group AG Reduced -4,758-4.8k
Marquette Asset Management, LLC Reduced -3,548-3.5k
MAI Capital Management Reduced -252-252

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.

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 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)

BuyingSelling
202Q1 22: 0 buyingQ1 22: 1 sellingQ2 22: 1 buyingQ2 22: 1 sellingQ2 22Q3 22: 0 buyingQ3 22: 1 sellingQ4 22: 0 buyingQ4 22: 0 sellingQ4 22Q1 23: 0 buyingQ1 23: 0 sellingQ2 23: 0 buyingQ2 23: 1 sellingQ2 23Q3 23: 0 buyingQ3 23: 0 sellingQ4 23: 0 buyingQ4 23: 2 sellingQ4 23
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q1 20220—1$30.9k—
Q2 20221$9.6k1$75.4k—
Q3 20220—1$22.6k—
Q4 20220—0——
Q1 20230—0——
Q2 20230—1$16.1k—
Q3 20230—0——
Q4 20230—2$76.2k—
DateInsiderTradeSharesPrice ValueTheir holding
2023-12-07 Jackson Benjamin General Counsel Sold 10,000 $5.22 $52.2k10.0k shares -6%
2023-12-07 Boniface John J. Chief Scientific Officer Sold 5,000 $4.80 $24.0k5.0k shares -2%

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

#ManagerLocationShares Value% of their portfolioChangeShares change
1 BAKER BROS. ADVISORS LP 0.37% of their portfolio NEW YORK, NY 5,434,3995.4m $32.5m $32.5m 0.37% Added +3.9m +3,919,057
2 Vivo Capital, LLC 0.81% of their portfolio Palo Alto, CA 1,650,4401.7m $9.9m $9.9m 0.81% Reduced -205.6k -205,571
3 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 909,502909.5k $5.4m $5.4m 0.00% Added +122.7k +122,710
4 CAPTRUST FINANCIAL ADVISORS 0.01% of their portfolio RALEIGH, NC 399,583399.6k $2.4m $2.4m 0.01% Reduced -23.2k -23,216
5 AWM Investment Company, Inc. 0.29% of their portfolio NEW YORK, NY 374,902374.9k $2.2m $2.2m 0.29% New
6 Ensign Peak Advisors, Inc 0.00% of their portfolio SALT LAKE CITY, UT 255,980256.0k $1.5m $1.5m 0.00% Added +237.9k +237,872
7 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 202,595202.6k $1.2m $1.2m 0.00% Added +24.3k +24,305
8 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 151,933151.9k $909.0k $909.0k 0.00% New
9 Acuitas Investments, LLC 0.78% of their portfolio Seattle, WA 121,258121.3k $1.5m $1.5m 0.78% Reduced -51.9k -51,937
10 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 111,578111.6k $667.2k $667.2k 0.00% Added +110.6k +110,619
11 BlackRock Inc. 0.00% of their portfolio New York, NY 87,95888.0k $526.0k $526.0k 0.00% Added +30.3k +30,329
12 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 86,65586.7k $518.2k $518.2k 0.00% Added +73.7k +73,658
13 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio HOUSTON, TX 86,10586.1k $514.9k $514.9k 0.01% Reduced -10.0k -10,000
14 Informed Momentum Co LLC 0.09% of their portfolio SOLANA BEACH, CA 85,59785.6k $511.9k $511.9k 0.09% New
15 Perigon Wealth Management, LLC 0.02% of their portfolio SAN FRANCISCO, CA 85,18585.2k $509.4k $509.4k 0.02% New
16 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 70,58870.6k $422.0k $422.0k 0.00% Unchanged
17 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 69,34969.3k $414.7k $414.7k 0.00% New
18 Lexington Partners L.P. 0.26% of their portfolio NEW YORK, NY 65,41565.4k $391.2k $391.2k 0.26% New
19 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 64,99265.0k $388.7k $388.7k 0.00% Added +14.8k +14,800
20 683 Capital Management, LLC 0.03% of their portfolio NEW YORK, NY 56,16956.2k $335.9k $335.9k 0.03% New
21 Requisite Capital Management, LLC 0.08% of their portfolio DALLAS, TX 55,64855.6k $332.8k $332.8k 0.08% Unchanged
22 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 54,93154.9k $328.5k $328.5k 0.00% Added +54.9k +54,927
23 OMERS ADMINISTRATION Corp 0.00% of their portfolio TORONTO, A6 53,90053.9k $322.3k $322.3k 0.00% New
24 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 53,57453.6k $320.4k $320.4k 0.00% Added +49.6k +49,555
25 Railway Pension Investments Ltd 0.00% of their portfolio LONDON, X0 47,57447.6k $284.5k $284.5k 0.00% New
26 Vanderbilt University 0.07% of their portfolio NASHVILLE, TN 47,57447.6k $284.5k $284.5k 0.07% New
27 RESOURCE CONSULTING GROUP INC 0.05% of their portfolio ORLANDO, FL 44,23444.2k $264.5k $264.5k 0.05% New
28 CWM, LLC 0.00% of their portfolio OMAHA, NE 40,52440.5k $242.0k $242.0k 0.00% New
29 Man Group plc 0.00% of their portfolio LONDON, X0 39,94239.9k $238.9k $238.9k 0.00% New
30 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 32,84232.8k $196.4k $196.4k 0.00% Added +5.7k +5,651
31 Mission Creek Capital Partners, Inc. 0.05% of their portfolio SAN FRANCISCO, CA 32,57432.6k $194.8k $194.8k 0.05% New
32 Marquette Asset Management, LLC 0.04% of their portfolio MINNEAPOLIS, MN 32,13932.1k $192.2k $192.2k 0.04% Reduced -3.5k -3,548
33 Corient Private Wealth LP 0.00% of their portfolio MIAMI, FL 30,00030.0k $179.4k $179.4k 0.00% New
34 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 29,91329.9k $178.9k $178.9k 0.00% New
35 HighVista Strategies LLC 0.04% of their portfolio BOSTON, MA 20,48020.5k $122.5k $122.5k 0.04% New
36 MAI Capital Management 0.00% of their portfolio INDEPENDENCE, OH 16,73716.7k $100.1k $100.1k 0.00% Reduced -252 -252
37 UBS Group AG 0.00% of their portfolio ZURICH, V8 16,24216.2k $97.1k $97.1k 0.00% Reduced -4.8k -4,758
38 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 14,97915.0k $89.6k $89.6k 0.00% Unchanged
39 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 14,71714.7k $88.0k $88.0k 0.00% New
40 Sterling Investment Advisors, Ltd. 0.03% of their portfolio BERWYN, PA 13,48913.5k $80.7k $80.7k 0.03% New
41 Y-Intercept (Hong Kong) Ltd 0.01% of their portfolio HONG KONG, K3 13,19113.2k $78.9k $78.9k 0.01% New
42 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 12,33812.3k $73.8k $73.8k 0.00% New
43 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 12,00012.0k $71.8k $71.8k 0.00% Unchanged
44 BOOTHBAY FUND MANAGEMENT, LLC 0.00% of their portfolio NEW YORK, NY 11,29011.3k $67.5k $67.5k 0.00% New
45 StepStone Group LP 0.01% of their portfolio La Jolla, CA 10,24110.2k $61.2k $61.2k 0.01% New
46 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 147147 $879 $879 0.00% Added +10 +10
47 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 9999 $1.0k $1.0k 0.00% Added +16 +16
48 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged