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Disclosery

CSTL CASTLE BIOSCIENCES INC

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COMMON STOCK (common), issuer CIK 1447362

177 managers (181 13F filers) reported a position in CSTL shares at 2025-03-31, 25,870,124 shares in all. 28 filers opened a position and 43 filers sold out during the quarter.

Managers
177
13F filers
181
New
28
Added
76
Reduced
55
Sold out
43
Shares held by filers
25,870,124

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

The latest Form 4 transactions, non-derivative.
OwnerDateSharesPriceFiling
MAETZOLD DEREK Jdirector, officer (Pres. & Chief Exec. Officer)2026-10-05-2,718 S$35.566Form 4
MAETZOLD DEREK Jdirector, officer (Pres. & Chief Exec. Officer)2026-10-05-3,198 S$35.566Form 4
MAETZOLD DEREK Jdirector, officer (Pres. & Chief Exec. Officer)2026-10-05-8,580 S$35.566Form 4
MAETZOLD DEREK Jdirector, officer (Pres. & Chief Exec. Officer)2026-10-05+8,165 M$2.39Form 4

13F holders, Q1 2025

Filers in the available 13F reports with a share position at 2025-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.2,983,540$59.7M<0.01%+62,23113F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC2,047,565$41M<0.01%+215,03013F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding1,467,963$29.4M+32,208Timeline
Portolan Capital Management, LLCin group Portolan Capital Management, …1,265,223$25.3M1.93%+488,64413F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP1,200,222$24M0.01%+200,75613F-HRTimelineGroup
WASATCH ADVISORS LP998,455$20M0.11%-797,63313F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…828,528$16.6M<0.01%+106,40813F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP715,028$14.3M<0.01%+4,81613F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC701,200$14M0.02%+16,20013F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC676,066$13.5M0.04%+267,41613F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC649,853$13M<0.01%+21,65713F-HRTimelineGroup
Allianz Asset Management GmbHin group Allianz SE639,477$12.8M0.02%+317,10313F-HRTimelineGroup
SCHRODER INVESTMENT MANAGEMENT GROUP597,089$11.9M0.01%new13F-HRTimeline
Nuveen, LLCin group TIAA671,811$11.9M<0.01%13F-HRTimelineGroup
Park West Asset Management LLC556,485$11.1M0.91%new13F-HRTimeline
PALISADE CAPITAL MANAGEMENT, LP489,968$9.81M0.28%-13,47413F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/375,380$7.52M<0.01%-28,17313F-HRTimelineGroup
BRAIDWELL LP365,247$7.31M0.26%new13F-HRTimeline
Parkman Healthcare Partners LLC350,551$7.02M0.83%+45,92213F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC325,697$6.52M<0.01%+9,66113F-HRTimelineGroup
Bellevue Group AGin group Bellevue Group AG301,103$6.03M0.14%-444,87913F-HRTimelineGroup
Qube Research & Technologies Ltd279,364$5.59M0.01%+61,82013F-HRTimeline
KORNITZER CAPITAL MANAGEMENT INC /KS278,314$5.57M0.11%-105,66013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP273,469$5.47M<0.01%-11,11813F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC258,382$5.17M0.01%-576,13013F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC254,749$5.1M<0.01%-294,06013F-HRTimelineGroup
Trexquant Investment LP248,991$4.98M0.06%+45,42013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co242,258$4.85M<0.01%-16,60813F-HR/ATimelineGroup
Cubist Systematic Strategies, LLC237,698$4.76M0.06%+60,16113F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.236,218$4.73M0.01%-310,88613F-HR/ATimelineGroup
Allspring Global Investments Holdings, …in group Allspring Global Investments …217,794$4.36M0.01%+207,76113F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY211,793$4.24M<0.01%-94,88413F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding208,985$4.18M+197,485Timeline
Advisors Capital Management, LLC201,687$4.04M0.06%+22,75213F-HRTimeline
SILVERCREST ASSET MANAGEMENT GROUP LLC198,802$3.98M0.03%-1,14813F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.189,177$3.79M<0.01%+98,61413F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…176,889$3.54M0.02%+8,17613F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC175,325$3.51M<0.01%-257,42513F-HR/ATimelineGroup
TUDOR INVESTMENT CORP ET AL171,382$3.43M0.03%+101,30613F-HRTimeline
SHELTON CAPITAL MANAGEMENT164,008$3.28M0.08%013F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND163,159$3.27M<0.01%-25,94213F-HR/ATimeline
ALGERT GLOBAL LLC144,311$2.89M0.07%-5,18013F-HR/ATimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC137,022$2.74M<0.01%+115,90713F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding116,790$2.34M-761,828Timeline
FRANKLIN RESOURCES INCin group Franklin Resources99,086$1.98M<0.01%+25,44913F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC97,360$1.95M<0.01%+80,04313F-HR/ATimelineGroup
Birchview Capital, LP88,404$1.77M1.54%+10,40413F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp84,041$1.68M<0.01%-41813F-HRTimelineGroup
Orion Porfolio Solutions, LLC78,409$1.57M0.02%+10,09313F-HRTimeline
Orion Portfolio Solutions, LLC78,409$1.57M0.02%+10,09313F-HR/ATimeline
ExodusPoint Capital Management, LP77,563$1.55M0.02%+66,07913F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC74,067$1.48M<0.01%+4,89213F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO73,059$1.46M<0.01%+31,56813F-HR/ATimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC69,771$1.4M<0.01%-3,57313F-HRTimelineGroup
Graham Capital Management, L.P.68,385$1.37M0.04%+26,70913F-HRTimeline
GSA CAPITAL PARTNERS LLP67,143$1.34M0.12%-3,65813F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\65,537$1.31M<0.01%-2,13013F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC62,701$1.26M<0.01%+21,37413F-HRTimelineGroup
Schonfeld Strategic Advisors LLC59,671$1.19M0.01%+44,37113F-HRTimeline
Jackson Creek Investment Advisors LLC57,094$1.14M0.36%new13F-HRTimeline
Swiss National Bank54,300$1.09M<0.01%+3,00013F-HRTimeline
Engineers Gate Manager LP52,923$1.06M0.02%+34,20113F-HRTimeline
DARK FOREST CAPITAL MANAGEMENT LP51,855$1.04M0.05%new13F-HRTimeline
Campbell & CO Investment Adviser LLC45,849$918K0.07%-47113F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS45,230$906K<0.01%-203,89813F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC42,815$857K<0.01%-6,19813F-HR/ATimelineGroup
TRITONPOINT WEALTH, LLCin group TritonPoint Partners, LLC41,637$834K0.08%-5,00013F-HRTimelineGroup
RHUMBLINE ADVISERS39,186$784K<0.01%-70613F-HR/ATimeline
Nebula Research & Development LLC37,617$753K0.07%+10,94313F-HRTimeline
ABG Innovation Capital Partners III GP …36,747$736K91.94%013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…35,901$719K<0.01%+18,46713F-HRTimelineGroup
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…35,800$717K<0.01%013F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC33,970$680K<0.01%new13F-HRTimeline
PERKINS CAPITAL MANAGEMENT INC33,965$680K0.72%-20013F-HRTimeline
ALLIANCEBERNSTEIN L.P.33,370$668K<0.01%013F-HRTimeline
Invesco Ltd.in group Invesco Ltd.32,251$646K<0.01%+4,71713F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC30,676$614K<0.01%-28,70713F-HR/ATimelineGroup
Verition Fund Management LLC30,671$614K<0.01%+21,62313F-HRTimeline
Summit Global Investmentsin group Summit Global Investments30,640$613K0.04%+2,16413F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO30,577$612K<0.01%-77,35913F-HRTimelineGroup
HRT FINANCIAL LP28,285$566K<0.01%+15,91613F-HRTimeline
Parallel Advisors, LLC27,593$551K0.01%-40213F-HRTimeline
MACKENZIE FINANCIAL CORP27,460$550K<0.01%+6,44013F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc25,916$519K<0.01%-3613F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…24,620$493K<0.01%013F-HRTimeline
TOWNSQUARE CAPITAL LLC23,772$476K0.01%+1,58413F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/23,705$475K<0.01%+1,00813F-HRTimeline
Yu Fan22,503$451K0.46%013F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP22,308$447K<0.01%+1,00513F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC21,299$426K<0.01%-113,48313F-HRTimeline
Dynamic Technology Lab Private Ltd21,235$425K0.06%+3,60513F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC21,138$423K<0.01%new13F-HRTimelineGroup
HUSSMAN STRATEGIC ADVISORS, INC.21,000$420K0.1%-52,50013F-HRTimeline
EntryPoint Capital, LLC20,432$409K0.19%-8,71213F-HRTimeline
Advantage Alpha Capital Partners LP19,805$396K0.1%new13F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management19,730$395K<0.01%new13F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd19,628$393K0.02%new13F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC19,627$391K<0.01%-4613F-HRTimelineGroup
SHERBROOKE PARK ADVISERS LLC19,439$389K0.18%+7,06713F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…18,669$373K<0.01%+11,45713F-HRTimelineGroup
STRS OHIO18,300$366K<0.01%013F-HRTimeline
Inspire Investing, LLCin group Inspire Investing, LLC17,153$343K0.04%-28,59713F-HRTimelineGroup
Oak Harvest Investment Services16,883$338K0.05%+9,15613F-HRTimeline
Centiva Capital, LP16,802$336K0.02%-6,21313F-HRTimeline
HARBOR CAPITAL ADVISORS, INC.16,595$332K0.02%-101,90513F-HRTimeline
CAXTON ASSOCIATES LLP16,440$329K0.01%13F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding16,373$328K+654Timeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN16,347$327K<0.01%+97213F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC16,078$322K<0.01%+4,50013F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…15,729$315K<0.01%-28813F-HRTimelineGroup
Quantbot Technologies LP15,287$306K0.01%new13F-HRTimeline
First Bank & Trust15,136$303K0.06%+6,51213F-HRTimeline
Man Group plcin group Man Group plc14,514$291K<0.01%+1,21213F-HRTimelineGroup
STEPHENS INC /AR/in group Stephens Investment Managemen…13,639$273K<0.01%-80013F-HRTimelineGroup
SIMON QUICK ADVISORS, LLC13,595$272K0.02%+2013F-HRTimeline
Mach-1 Financial Group, LLC13,313$267K0.08%new13F-HRTimeline
DIVERSIFY WEALTH MANAGEMENT, LLCin group Diversify Advisory Services, …13,102$260K0.02%+71713F-HRTimelineGroup
WINTON GROUP Ltdin group WINTON GROUP Ltd12,869$258K0.02%new13F-HRTimelineGroup
Corebridge Financial, Inc.in group Corebridge Financial, Inc.12,866$258K<0.01%+613F-HRTimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…12,205$244K0.01%new13F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…12,081$242K<0.01%-1,56113F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …11,753$235K<0.01%new13F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC11,226$225K<0.01%new13F-HRTimelineGroup
Creative Planningin group Creative Planning11,100$222K<0.01%+1,56013F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co10,713$215K<0.01%013F-HRTimelineGroup
TEACHER RETIREMENT SYSTEM OF TEXAS10,383$208K<0.01%+90813F-HRTimeline
Lido Advisors, LLCin group Lido Advisors, LLC10,031$201K<0.01%-49313F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA9,087$182K<0.01%+19113F-HR/ATimelineGroup
AlphaQuest LLC6,008$120K0.01%-4,22313F-HRTimeline
Police & Firemen's Retirement System of…5,837$117K<0.01%013F-HRTimeline
China Universal Asset Management Co., L…5,719$114K0.01%-22013F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC4,928$98K<0.01%new13F-HRTimelineGroup
KLP KAPITALFORVALTNING AS4,800$96.1K<0.01%013F-HRTimeline
CWM, LLCin group CWM, LLC4,142$83K<0.01%+3,69913F-HRTimelineGroup
ASSETMARK, INCin group ASSETMARK, INC3,980$79.7K<0.01%-43213F-HRTimelineGroup
Amundiin group Amundi4,137$79.4K<0.01%+4,11113F-HRTimelineGroup
C M BIDWELL & ASSOCIATES LTD3,180$63.7K0.04%+48213F-HRTimeline
HARBOUR INVESTMENTS, INC.2,500$50K<0.01%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…2,450$49K<0.01%013F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD2,400$48K<0.01%+1,50013F-HRTimeline
First Horizon Advisors, Inc.1,810$36.2K<0.01%-20013F-HRTimeline
Point72 (DIFC) Ltd1,773$35.5K<0.01%+53913F-HRTimeline
Covestor Ltd1,219$24K0.02%+28313F-HRTimeline
FMR LLCin group FMR LLC1,156$23.1K<0.01%+7513F-HRTimelineGroup
ARCADIA INVESTMENT MANAGEMENT CORP/MI904$18.1K<0.01%013F-HRTimeline
AMALGAMATED BANK893$18K<0.01%+6013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…782$15.7K<0.01%-10,48313F-HRTimelineGroup
GF FUND MANAGEMENT CO. LTD.716$14.3K<0.01%+12813F-HRTimeline
Hughes Financial Services, LLC435$8.6K<0.01%new13F-HRTimeline
COLDSTREAM CAPITAL MANAGEMENT INC342$6.85K<0.01%new13F-HRTimeline
NISA INVESTMENT ADVISORS, LLC336$6.73K<0.01%-10913F-HRTimeline
Sterling Capital Management LLC316$6.33K<0.01%-25613F-HRTimeline
GAMMA Investing LLC218$4.36K<0.01%-413F-HR/ATimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.202$4.04K<0.01%+18813F-HRTimelineGroup
True Wealth Design, LLC201$4.03K<0.01%+20013F-HRTimeline
Lindbrook Capital, LLC179$3.58K<0.01%+713F-HRTimeline
Caitong International Asset Management …156$3.12K<0.01%new13F-HRTimeline
Rossby Financial, LCC142$2.93K<0.01%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…120$2.4K<0.01%new13F-HRTimelineGroup
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.86$2K<0.01%013F-HRTimelineGroup
BFSG, LLC90$1.8K<0.01%013F-HRTimeline
SBI Securities Co., Ltd.58$1.16K<0.01%+813F-HRTimeline
MassMutual Private Wealth & Trust, FSB51$1.02K<0.01%-3913F-HRTimeline
Spire Wealth Managementin group Spire Wealth Management50$1K<0.01%new13F-HRTimelineGroup
SIMPLEX TRADING, LLC97$1K<0.01%-2,96713F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…47$941<0.01%+3813F-HRTimelineGroup
Wilmington Savings Fund Society, FSB46$921<0.01%new13F-HRTimeline
Steward Partners Investment Advisory, L…31$621<0.01%013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP25$499<0.01%013F-HR/ATimelineGroup
US BANCORP \DE\in group US BANCORP \DE\24$480<0.01%-1,17813F-HRTimelineGroup
Parkside Financial Bank & Trust20$401<0.01%new13F-HRTimeline
ROTHSCHILD INVESTMENT LLC20$400<0.01%-2013F-HRTimeline
Missouri Trust & Investment Co19$380<0.01%013F-HRTimeline
Brooklyn Investment Group11$221<0.01%new13F-HRTimeline
Farther Finance Advisors, LLC5$99<0.01%013F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK1$20<0.01%013F-HRTimelineGroup
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0-6,96013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.

Events

  • MAETZOLD DEREK J disposed of 6,331 CSTL shares on 2026-10-05, Form 4 filed 2026-10-07. 0001628280-26-065327

    Accepted , ingested