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Disclosery

CSTL CASTLE BIOSCIENCES INC

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COMMON STOCK (common), issuer CIK 1447362

149 managers (153 13F filers) reported a position in CSTL shares at 2025-06-30, 26,536,193 shares in all. 15 filers opened a position and 42 filers sold out during the quarter.

Managers
149
13F filers
153
New
15
Added
69
Reduced
45
Sold out
42
Shares held by filers
26,536,193

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, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, 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.3,154,679$64.4M<0.01%+171,13913F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC2,170,028$44.3M<0.01%+122,46313F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding1,799,050$36.7M+331,087Timeline
Portolan Capital Management, LLCin group Portolan Capital Management, …1,489,572$30.4M1.91%+224,34913F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP1,378,005$28.1M0.01%+177,78313F-HRTimelineGroup
Nuveen, LLCin group TIAA1,073,107$21.9M0.01%+401,29613F-HRTimelineGroup
WASATCH ADVISORS LP1,049,773$21.4M0.11%+51,31813F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC888,515$18.1M0.02%+630,13313F-HRTimelineGroup
BRAIDWELL LP822,735$16.8M0.57%+457,48813F-HRTimeline
Allianz Asset Management GmbHin group Allianz SE713,742$14.6M0.02%+74,26513F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP707,687$14.5M<0.01%-7,34113F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC689,926$14.1M<0.01%+40,07313F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC670,500$13.7M0.02%-30,70013F-HRTimeline
SCHRODER INVESTMENT MANAGEMENT GROUP648,572$13.2M0.01%+51,48313F-HRTimeline
PALISADE CAPITAL MANAGEMENT, LP575,116$11.7M0.33%+85,14813F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC544,250$11.1M0.02%-131,81613F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding466,590$9.53M+349,800Timeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC428,397$8.75M0.01%+173,64813F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…407,211$8.32M<0.01%-421,31713F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/382,745$7.82M<0.01%+7,36513F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC372,467$7.61M<0.01%+46,77013F-HRTimelineGroup
Parkman Healthcare Partners LLC352,262$7.19M0.83%+1,71113F-HRTimeline
Trexquant Investment LP318,072$6.5M0.07%+69,08113F-HRTimeline
SILVERCREST ASSET MANAGEMENT GROUP LLC279,959$5.72M0.04%+81,15713F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP279,825$5.71M<0.01%+6,35613F-HRTimelineGroup
KORNITZER CAPITAL MANAGEMENT INC /KS278,314$5.68M0.11%013F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC273,443$5.58M<0.01%+98,11813F-HRTimelineGroup
Advisors Capital Management, LLC245,867$5.02M0.07%+44,18013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co235,015$4.8M<0.01%-7,24313F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND215,830$4.41M0.01%+52,67113F-HR/ATimeline
Qube Research & Technologies Ltd192,553$3.93M0.01%-86,81113F-HRTimeline
ALGERT GLOBAL LLC185,181$3.78M0.08%+40,87013F-HR/ATimeline
MORGAN STANLEYin group MORGAN STANLEY167,588$3.42M<0.01%-44,20513F-HRTimelineGroup
Allspring Global Investments Holdings, …in group Allspring Global Investments …161,175$3.29M0.01%-56,61913F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.148,190$3.03M<0.01%-40,98713F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…126,431$2.58M0.01%-50,45813F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC125,719$2.57M0.01%+28,35913F-HR/ATimelineGroup
Birchview Capital, LP110,600$2.26M2.24%+22,19613F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC109,743$2.24M<0.01%+66,92813F-HR/ATimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS99,293$2.03M<0.01%+54,06313F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources99,247$2.03M<0.01%+16113F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp89,883$1.84M<0.01%+5,84213F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd78,938$1.61M0.04%new13F-HRTimeline
Orion Porfolio Solutions, LLC76,532$1.56M0.01%-1,87713F-HR/ATimeline
TUDOR INVESTMENT CORP ET AL76,454$1.56M0.01%-94,92813F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC70,478$1.44M<0.01%+70713F-HRTimelineGroup
Schonfeld Strategic Advisors LLC67,926$1.39M0.01%+8,25513F-HRTimeline
Engineers Gate Manager LP67,252$1.37M0.02%+14,32913F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC65,272$1.33M<0.01%-8,79513F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\61,743$1.26M<0.01%-3,79413F-HRTimelineGroup
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …54,610$1.12M<0.01%+42,85713F-HRTimelineGroup
Swiss National Bank54,300$1.11M<0.01%013F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC49,230$1.01M<0.01%-87,79213F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd46,301$945K0.04%+26,67313F-HRTimelineGroup
RHUMBLINE ADVISERS45,397$927K<0.01%+6,21113F-HRTimeline
Nebula Research & Development LLC44,472$908K0.08%+6,85513F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…42,853$875K<0.01%+6,95213F-HRTimelineGroup
Graham Capital Management, L.P.41,783$853K0.03%-26,60213F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…41,301$843K0.01%+29,09613F-HRTimelineGroup
TRITONPOINT WEALTH, LLCin group TritonPoint Partners, LLC40,777$833K0.08%-86013F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC40,750$832K0.02%new13F-HRTimeline
Empowered Funds, LLC40,750$832K0.01%new13F-HRTimeline
Invesco Ltd.in group Invesco Ltd.40,429$826K<0.01%+8,17813F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding40,241$822K-168,744Timeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…35,800$731K<0.01%013F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc34,908$713K<0.01%+8,99213F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC34,018$691K<0.01%+14,39113F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.33,370$681K<0.01%013F-HRTimeline
Verition Fund Management LLC31,539$644K<0.01%+86813F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO31,130$636K<0.01%-41,92913F-HRTimelineGroup
PERKINS CAPITAL MANAGEMENT INC27,995$572K0.57%-5,97013F-HRTimeline
Parallel Advisors, LLC27,893$570K0.01%+30013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO26,663$544K<0.01%-3,91413F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/26,407$540K<0.01%+2,70213F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…24,620$503K<0.01%013F-HRTimeline
MACKENZIE FINANCIAL CORP24,204$494K<0.01%-3,25613F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP24,023$491K<0.01%+1,71513F-HRTimelineGroup
FMR LLCin group FMR LLC24,000$490K<0.01%+22,84413F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC21,858$446K0.01%new13F-HR/ATimelineGroup
HARBOR CAPITAL ADVISORS, INC.20,399$417K0.02%+3,80413F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN20,300$415K<0.01%+3,95313F-HRTimelineGroup
First Bank & Trust19,951$407K0.07%+4,81513F-HRTimeline
Aquatic Capital Management LLC19,280$394K0.01%new13F-HRTimeline
Inspire Investing, LLCin group Inspire Investing, LLC19,117$390K0.04%+1,96413F-HRTimelineGroup
HRT FINANCIAL LP18,826$384K<0.01%-9,45913F-HRTimeline
Oak Harvest Investment Services16,883$345K0.04%013F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding16,676$341K+303Timeline
Advantage Alpha Capital Partners LP16,021$327K0.09%-3,78413F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…15,881$324K<0.01%+15213F-HRTimelineGroup
Summit Global Investmentsin group Summit Global Investments15,649$320K0.02%-14,99113F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC14,072$287K<0.01%-48,62913F-HRTimelineGroup
SIMON QUICK ADVISORS, LLC13,562$277K0.01%-3313F-HR/ATimeline
INTECH INVESTMENT MANAGEMENT LLC12,289$251K<0.01%-3,78913F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…12,089$247K<0.01%+813F-HRTimeline
STRS OHIO11,700$239K<0.01%-6,60013F-HRTimeline
DIVERSIFY WEALTH MANAGEMENT, LLCin group Diversify Advisory Services, …12,322$238K0.01%-78013F-HRTimelineGroup
STEPHENS INC /AR/in group Stephens Investment Managemen…11,386$233K<0.01%-2,25313F-HRTimelineGroup
Creative Planningin group Creative Planning11,111$227K<0.01%+1113F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co10,713$219K<0.01%013F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA10,573$215K<0.01%+1,48613F-HR/ATimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …10,316$211K<0.01%new13F-HRTimelineGroup
Lido Advisors, LLCin group Lido Advisors, LLC10,031$205K<0.01%013F-HRTimelineGroup
ELEVATION POINT WEALTH PARTNERS, LLC8,362$171K0.01%new13F-HR/ATimeline
Police & Firemen's Retirement System of…5,837$119K<0.01%013F-HRTimeline
China Universal Asset Management Co., L…5,799$118K0.01%+8013F-HRTimeline
KLP KAPITALFORVALTNING AS4,800$98K<0.01%013F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC4,547$92.8K<0.01%+56713F-HRTimelineGroup
HARBOUR INVESTMENTS, INC.2,987$61K<0.01%+48713F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…2,900$59.2K<0.01%+45013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,791$57K<0.01%+2,00913F-HRTimelineGroup
Covestor Ltd2,380$49K0.03%+1,16113F-HRTimeline
AlphaQuest LLC2,095$42.8K<0.01%-3,91313F-HRTimeline
First Horizon Advisors, Inc.1,792$36.6K<0.01%-1813F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…1,532$31.3K<0.01%-17,13713F-HRTimelineGroup
Global Retirement Partners, LLC1,163$23.7K<0.01%13F-HRTimeline
CWM, LLCin group CWM, LLC1,058$22K<0.01%-3,08413F-HRTimelineGroup
AMALGAMATED BANK893$18K<0.01%013F-HRTimeline
Sterling Capital Management LLC767$15.7K<0.01%+45113F-HR/ATimeline
GF FUND MANAGEMENT CO. LTD.716$14.6K<0.01%013F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC662$13.5K<0.01%new13F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …428$9K<0.01%new13F-HRTimelineGroup
Hughes Financial Services, LLC435$8.6K<0.01%013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC320$6.53K<0.01%-1613F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK197$4.02K<0.01%+19613F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.199$4.01K<0.01%-313F-HR/ATimelineGroup
Rossby Financial, LCC142$2.9K<0.01%013F-HRTimeline
GAMMA Investing LLC132$2.69K<0.01%-8613F-HRTimeline
Versant Capital Management, Inc126$2.57K<0.01%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…110$2.25K<0.01%-1013F-HRTimelineGroup
Caitong International Asset Management …106$2.17K<0.01%-5013F-HRTimeline
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.86$2K<0.01%013F-HRTimelineGroup
BFSG, LLC90$1.84K<0.01%013F-HRTimeline
ROTHSCHILD INVESTMENT LLC85$1.74K<0.01%+6513F-HRTimeline
IFP Advisors, Inc36$1.27K<0.01%new13F-HRTimeline
SBI Securities Co., Ltd.50$1.02K<0.01%-813F-HRTimeline
Spire Wealth Managementin group Spire Wealth Management50$1.02K<0.01%013F-HRTimelineGroup
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC72$1K<0.01%-4,85613F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…47$960<0.01%013F-HRTimelineGroup
Wilmington Savings Fund Society, FSB46$939<0.01%013F-HRTimeline
SIGNATUREFD, LLC45$919<0.01%new13F-HRTimeline
Parkside Financial Bank & Trust25$511<0.01%+513F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP25$509<0.01%013F-HRTimelineGroup
Missouri Trust & Investment Co19$388<0.01%013F-HRTimeline
Brooklyn Investment Group11$225<0.01%013F-HR/ATimeline
Allworth Financial LP5$103<0.01%new13F-HRTimeline
Stephens Consulting, LLC2$41<0.01%new13F-HRTimeline
Farther Finance Advisors, LLC1$20<0.01%-413F-HRTimeline
TWIN PEAKS WEALTH ADVISORS, LLC1$19<0.01%new13F-HRTimeline
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-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