Derek J. Maetzold - Pres. & Chief Exec. Officer, Director at CASTLE BIOSCIENCES INC

Issuer-level insider activity

Role: Pres. & Chief Exec. Officer, Director
Issuer ticker: CSTL on Nasdaq
Entity type: Individual
Source filing history: Open source filing history

Past-year transaction volume for Derek J. Maetzold in CASTLE BIOSCIENCES INC

Buys

Open market

Shares
Avg price
Total value

Sells

Open market

Shares: -332,892
Avg price: $29.28
Total value: -$9,745,835

Net

Past year

Shares: -332,892
Share %: -100%
Total value: -$9,745,835

Reported holdings for Derek J. Maetzold in CASTLE BIOSCIENCES INC

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Common Stock
Shares / value: 85,959
Estimated value: $2,110,293
Report date: 01 Jun 2026
Price: $24.55
Ownership: By DJM Grantor Retained Annuity Trust No. 5

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Restricted Stock Units
Shares / value: 83,961
Estimated value: $1,946,635
Report date: 04 Mar 2026
Price: $20.86
Ownership: Direct
Underlying class: Common Stock
Underlying amount

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Performance-Based Stock Unit
Shares / value: 62,219
Estimated value: $1,797,369
Report date: 12 Jan 2026
Price: $26.83
Ownership: Direct
Underlying class: Common Stock
Underlying amount

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Common Stock
Shares / value: 40,935
Estimated value: $976,299
Report date: 28 Aug 2026
Price: $23.85
Ownership: By DJM Grantor Retained Annuity Trust No. 8

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Common Stock
Shares / value: 21,479
Estimated value: $727,708
Report date: 28 Aug 2026
Price: $33.88
Ownership: Direct

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Common Stock
Shares / value: 27,862
Estimated value: $664,508
Report date: 28 Aug 2026
Price: $23.85
Ownership: By DJM Grantor Retained Annuity Trust No. 7

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Common Stock
Shares / value: 17,641
Estimated value: $597,677
Report date: 28 Aug 2026
Price: $33.88
Ownership: By The Maetzold Descendants 2020 Trust

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Common Stock
Shares / value: 23,216
Estimated value: $553,701
Report date: 28 Aug 2026
Price: $23.85
Ownership: DJM Grantor Retained Annuity Trust No. 9

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Common Stock
Shares / value: 14,995
Estimated value: $508,030
Report date: 28 Aug 2026
Price: $33.88
Ownership: By Derek Maetzold 2020 Irrevocable Trust

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Common Stock
Shares / value: 11,256
Estimated value: $381,353
Report date: 28 Aug 2026
Price: $33.88
Ownership: By The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Common Stock
Shares / value: 11,256
Estimated value: $381,353
Report date: 28 Aug 2026
Price: $33.88
Ownership: By The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Common Stock
Shares / value: 11,256
Estimated value: $381,353
Report date: 28 Aug 2026
Price: $33.88
Ownership: By The Maetzold 2018 Remainder Trust FBO John Derek Maetzold

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Common Stock
Shares / value: 11,256
Estimated value: $381,353
Report date: 28 Aug 2026
Price: $33.88
Ownership: By The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Common Stock
Shares / value: 11,963
Estimated value: $285,317
Report date: 28 Aug 2026
Price: $23.85
Ownership: By DJM Grantor Retained Annuity Trust No. 6

Form 4 holding Pres. & Chief Exec. Officer, Director

CASTLE BIOSCIENCES INC

Security class: Stock option (right to buy)
Shares / value: 25,329
Estimated value
Report date: 28 Aug 2026
Price
Ownership: Direct
Underlying class: Common Stock
Underlying amount

Transaction history for Derek J. Maetzold in CASTLE BIOSCIENCES INC

Sym	Class	Transaction	%	SEC-reported value	SEC-reported price	Shares	Shares after	Date	Ownership

^* marks a reported price that did not pass the local price check.

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