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Data sources

Public disclosures only. Scores flag unusual patterns and are not evidence of wrongdoing. Not investment advice.

RH CHAIN…
OverviewFollow the MoneyDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
01Overview02Follow the Money03Daily Brief04Live05Congress06Corporate Insiders07Government Money08Political Influence09Institutions10Washington Network11Follow the Power12Disclosure Clock13AI Investigator14Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
OverviewFollow the MoneyDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
Data sources
SEC FORM 44m ago
HOUSE PTR4m ago
SEC 13F4m ago
ROBINHOOD CHAIN3m ago
Public company

CSTLCASTLE BIOSCIENCES INC

CIK 0001447362

EDGAR filingsOpen in network
Disclosed transactions33
Buys / sells0 / 23
Max Insider Score21
Connections6with evidence

CSTL · disclosed activity on price

Disclosed transactions

ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
11
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$38K
1,025 sh
Nov 2, 2026Nov 4, 2026
traded Nov 2, 2026
+2dSEC FORM 4

Evidence

Verified connections

  • In industryevidence
    Pharmaceuticals, devices & health servicesSEC SIC 8071 · Services-Medical Laboratories · Nov 4, 2026
  • ← Lobbied forevidence
    MCDERMOTT+ LLCLDA Q2 2026 second quarter · Medicare/Medicaid · Aug 26, 2026
  • ← Insider ofevidence
    Oelschlager Kristen MChief Operating Officer · Jan 14, 2026
  • ← Insider ofevidence
    Stokes FrankChief Financial Officer · Jan 14, 2026
7
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL
$12K
325 sh
Nov 2, 2026
Nov 4, 2026
traded Nov 2, 2026
+2d
SEC FORM 4

Evidence

21
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$272K
7,555 sh
Nov 2, 2026Nov 4, 2026
traded Nov 2, 2026
+2dSEC FORM 4

Evidence

18
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$101K
2,816 sh
Nov 2, 2026Nov 4, 2026
traded Nov 2, 2026
+2dSEC FORM 4

Evidence

18
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$86K
2,393 sh
Nov 2, 2026Nov 4, 2026
traded Nov 2, 2026
+2dSEC FORM 4

Evidence

7
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$14K
382 sh
Nov 2, 2026Nov 4, 2026
traded Nov 2, 2026
+2dSEC FORM 4

Evidence

13
JW
Juvenal Tobin WChief Commercial Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$196K
5,341 sh
Oct 28, 2026Oct 30, 2026
traded Oct 28, 2026
+2dSEC FORM 4

Evidence

6
JW
Juvenal Tobin WChief Commercial Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$44K
1,237 sh
Oct 28, 2026Oct 30, 2026
traded Oct 28, 2026
+2dSEC FORM 4

Evidence

13
JW
Juvenal Tobin WChief Commercial Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$109K
3,288 sh
Oct 26, 2026Oct 28, 2026
traded Oct 26, 2026
+2dSEC FORM 4

Evidence

17
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$274K
8,580 sh
Oct 19, 2026Oct 21, 2026
traded Oct 19, 2026
+2dSEC FORM 4

Evidence

14
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$102K
3,198 sh
Oct 19, 2026Oct 21, 2026
traded Oct 19, 2026
+2dSEC FORM 4

Evidence

14
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$87K
2,718 sh
Oct 19, 2026Oct 21, 2026
traded Oct 19, 2026
+2dSEC FORM 4

Evidence

17
JW
Juvenal Tobin WChief Commercial Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$111K
3,288 sh
Oct 12, 2026Oct 14, 2026
traded Oct 12, 2026
+2dSEC FORM 4

Evidence

14
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$97K
2,718 sh
Oct 5, 2026Oct 7, 2026
traded Oct 5, 2026
+2dSEC FORM 4

Evidence

0
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Option exercise · 10b5-1 plan
M—
8,165 sh
Oct 5, 2026Oct 7, 2026
traded Oct 5, 2026
+2dSEC FORM 4

Evidence

0
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Option exercise · 10b5-1 plan
M$20K
8,165 sh
Oct 5, 2026Oct 7, 2026
traded Oct 5, 2026
+2dSEC FORM 4

Evidence

17
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$305K
8,580 sh
Oct 5, 2026Oct 7, 2026
traded Oct 5, 2026
+2dSEC FORM 4

Evidence

14
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$114K
3,198 sh
Oct 5, 2026Oct 7, 2026
traded Oct 5, 2026
+2dSEC FORM 4

Evidence

0
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Option exercise · 10b5-1 plan
M—
8,580 sh
Sep 21, 2026Sep 23, 2026
traded Sep 21, 2026
+2dSEC FORM 4

Evidence

3
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Option exercise · 10b5-1 plan
M$21K
8,580 sh
Sep 21, 2026Sep 23, 2026
traded Sep 21, 2026
+2dSEC FORM 4

Evidence

15
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$303K
8,580 sh
Sep 21, 2026Sep 23, 2026
traded Sep 21, 2026
+2dSEC FORM 4

Evidence

12
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$113K
3,198 sh
Sep 21, 2026Sep 23, 2026
traded Sep 21, 2026
+2dSEC FORM 4

Evidence

12
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$96K
2,718 sh
Sep 21, 2026Sep 23, 2026
traded Sep 21, 2026
+2dSEC FORM 4

Evidence

4
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$161K
4,017 sh
Jan 20, 2026Jan 22, 2026
traded Jan 20, 2026
+2dSEC FORM 4

Evidence

9
JW
Juvenal Tobin WChief Commercial Officer
CSTLCASTLE BIOSCIENCES INC
Grant or award
A—
9,207 sh
Jan 12, 2026Jan 14, 2026
traded Jan 12, 2026
+2dSEC FORM 4

Evidence

9
SF
Stokes FrankChief Financial Officer
CSTLCASTLE BIOSCIENCES INC
Grant or award
A—
8,124 sh
Jan 12, 2026Jan 14, 2026
traded Jan 12, 2026
+2dSEC FORM 4

Evidence

21
OM
Oelschlager Kristen MChief Operating Officer
CSTLCASTLE BIOSCIENCES INC
Grant or award
A—
9,207 sh
Jan 12, 2026Jan 14, 2026
traded Jan 12, 2026
+2dSEC FORM 4

Evidence

9
OM
Oelschlager Kristen MChief Operating Officer
CSTLCASTLE BIOSCIENCES INC
Grant or award
A—
9,207 sh
Jan 12, 2026Jan 14, 2026
traded Jan 12, 2026
+2dSEC FORM 4

Evidence

13
JW
Juvenal Tobin WChief Commercial Officer
CSTLCASTLE BIOSCIENCES INC
Grant or award
A—
9,207 sh
Jan 12, 2026Jan 14, 2026
traded Jan 12, 2026
+2dSEC FORM 4

Evidence

13
SF
Stokes FrankChief Financial Officer
CSTLCASTLE BIOSCIENCES INC
Grant or award
A—
8,124 sh
Jan 12, 2026Jan 14, 2026
traded Jan 12, 2026
+2dSEC FORM 4

Evidence

5
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$7,375
237 sh
Nov 4, 2025Nov 6, 2025
traded Nov 4, 2025
+2dSEC FORM 4

Evidence

4
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$85K
2,678 sh
Nov 5, 2025Nov 6, 2025
traded Nov 5, 2025
+1dSEC FORM 4

Evidence

12
MJ
Maetzold Derek JDirector, Pres. & Chief Exec. Officer
CSTLCASTLE BIOSCIENCES INC
Open-market sale · 10b5-1 plan
SELL$196K
6,458 sh
Nov 4, 2025Nov 6, 2025
traded Nov 4, 2025
+2dSEC FORM 4

Evidence

  • ← Insider ofevidence
    Juvenal Tobin WChief Commercial Officer · Jan 14, 2026
  • ← Insider ofevidence
    Maetzold Derek JDirector, Pres. & Chief Exec. Officer · Nov 6, 2025

    • Lobbying

    $80K reported · de-duplicated
    2026 Q2 $40K via firms2026 Q1 $40K via firms
    • MCDERMOTT+ LLC$40K2026 Q1 · posted Aug 26, 2026 · Medicare/Medicaid
    • MCDERMOTT+ LLC$40K2026 Q2 · posted Aug 26, 2026 · Medicare/Medicaid

    Connected PAC contributions

    FEC · direct to members

    No contributions from a PAC connected to this company.