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person · Reporting owner

MAETZOLD DEREK J

Disclosed activity across 1 company

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17918
SEC CIK
0001239501

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
CASTLE BIOSCIENCES INCCSTL · Entity 359Director · Pres. & Chief Exec. OfficerOctober 05, 2026October 07, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

CASTLE BIOSCIENCES INC

Report date October 05, 2026 · Filed October 07, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect21,064 Ending reported balance After 2026-10-05 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-10-05 · Exercise / conversion · Acquired 8,165 · Balance 29,644

F1: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2026.

Row 2 · 2026-10-05 · Sale · Disposed 8,580 · Balance 21,064

F1: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2026.

F2: This transaction was executed in multiple trades at prices ranging from $35.310 to $35.965, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Common StockSEC Table I · non-derivativeIndirectBy The Maetzold Descendants 2020 Trust8,038 Reported balance After 2026-10-05 transaction · row 3 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 3 · 2026-10-05 · Sale · Disposed 3,198 · Balance 8,038

F1: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2026.

F2: This transaction was executed in multiple trades at prices ranging from $35.310 to $35.965, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F3: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

Common StockSEC Table I · non-derivativeIndirectBy Derek Maetzold 2020 Irrevocable Trust6,832 Reported balance After 2026-10-05 transaction · row 4 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 4 · 2026-10-05 · Sale · Disposed 2,718 · Balance 6,832

F1: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2026.

F2: This transaction was executed in multiple trades at prices ranging from $35.310 to $35.965, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F4: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

Stock option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $2.39 · Expires 2028-05-09Direct0 Reported balance After 2026-10-05 transaction · row 13 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 13 · 2026-10-05 · Exercise / conversion · Disposed 8,165 · Balance 0

F1: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2026.

F13: The shares subject to the option are fully vested.

Common StockSEC Table I · non-derivativeIndirectBy The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk11,256 Reported balance Holding disclosure · report date 2026-10-05 · row 5 Holding and transaction disclosures are not merged.
1 source row

Row 5 · Balance 11,256

F5: Held by The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk of which the Reporting Person is the trustee and his child is the beneficiary.

Common StockSEC Table I · non-derivativeIndirectBy The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold11,256 Reported balance Holding disclosure · report date 2026-10-05 · row 6 Holding and transaction disclosures are not merged.
1 source row

Row 6 · Balance 11,256

F6: Held by The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold of which the Reporting Person is the trustee and his child is the beneficiary.

Common StockSEC Table I · non-derivativeIndirectBy The Maetzold 2018 Remainder Trust FBO John Derek Maetzold11,256 Reported balance Holding disclosure · report date 2026-10-05 · row 7 Holding and transaction disclosures are not merged.
1 source row

Row 7 · Balance 11,256

F7: Held by The Maetzold 2018 Remainder Trust FBO John Derek Maetzold of which the Reporting Person is the trustee and his child is the beneficiary.

Common StockSEC Table I · non-derivativeIndirectBy The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold11,256 Reported balance Holding disclosure · report date 2026-10-05 · row 8 Holding and transaction disclosures are not merged.
1 source row

Row 8 · Balance 11,256

F8: Held by The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold of which the Reporting Person is the trustee and his child is the beneficiary.

Common StockSEC Table I · non-derivativeIndirectBy DJM Grantor Retained Annuity Trust No. 611,963 Reported balance Holding disclosure · report date 2026-10-05 · row 9 Holding and transaction disclosures are not merged.
1 source row

Row 9 · Balance 11,963

F9: Held by DJM Grantor Retained Annuity Trust No. 6 of which the Reporting Person is the trustee and the beneficiaries are The Maetzold 2018 Remainder Trust FBO John Derek Maetzold, The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk, The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold and The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold.

Common StockSEC Table I · non-derivativeIndirectBy DJM Grantor Retained Annuity Trust No. 727,862 Reported balance Holding disclosure · report date 2026-10-05 · row 10 Holding and transaction disclosures are not merged.
1 source row

Row 10 · Balance 27,862

F10: Held by DJM Grantor Retained Annuity Trust No. 7 of which the Reporting Person is the trustee and beneficiary.

Common StockSEC Table I · non-derivativeIndirectBy DJM Grantor Retained Annuity Trust No. 840,935 Reported balance Holding disclosure · report date 2026-10-05 · row 11 Holding and transaction disclosures are not merged.
1 source row

Row 11 · Balance 40,935

F11: Held by DJM Grantor Retained Annuity Trust No. 8 of which the Reporting Person is the trustee and beneficiary.

Common StockSEC Table I · non-derivativeIndirectDJM Grantor Retained Annuity Trust No. 923,216 Reported balance Holding disclosure · report date 2026-10-05 · row 12 Holding and transaction disclosures are not merged.
1 source row

Row 12 · Balance 23,216

F12: Held by DJM Grantor Retained Annuity Trust No. 9 of which the Reporting Person is the trustee and beneficiary.

Filing footnotes · ownership attribution and instrument terms

F1: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2026.

F2: This transaction was executed in multiple trades at prices ranging from $35.310 to $35.965, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F3: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

F4: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

F5: Held by The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk of which the Reporting Person is the trustee and his child is the beneficiary.

F6: Held by The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold of which the Reporting Person is the trustee and his child is the beneficiary.

F7: Held by The Maetzold 2018 Remainder Trust FBO John Derek Maetzold of which the Reporting Person is the trustee and his child is the beneficiary.

F8: Held by The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold of which the Reporting Person is the trustee and his child is the beneficiary.

F9: Held by DJM Grantor Retained Annuity Trust No. 6 of which the Reporting Person is the trustee and the beneficiaries are The Maetzold 2018 Remainder Trust FBO John Derek Maetzold, The Maetzold 2018 Remainder Trust FBO Emily Carol Kirk, The Maetzold 2018 Remainder Trust FBO Peter Douglas Maetzold and The Maetzold 2018 Remainder Trust FBO Hannah Elizabeth Maetzold.

F10: Held by DJM Grantor Retained Annuity Trust No. 7 of which the Reporting Person is the trustee and beneficiary.

F11: Held by DJM Grantor Retained Annuity Trust No. 8 of which the Reporting Person is the trustee and beneficiary.

F12: Held by DJM Grantor Retained Annuity Trust No. 9 of which the Reporting Person is the trustee and beneficiary.

F13: The shares subject to the option are fully vested.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
August 31, 2021 Filed Sep 2, 2021 21:27 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 200 $76.82 $15,363.80
Disclosure

SEC source: 0001447362-21-000211 · wf-form4_163061803252124.xml · nonDerivative · entry 8

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By DJM Grantor Retained Annuity Trust No. 1

Disclosed balance after: 141,461

F6 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F11 · price: This transaction was executed in multiple trades at prices ranging from $76.720 to $76.910, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F8 · ownership.nature: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

Read SEC document
August 31, 2021 Filed Sep 2, 2021 21:27 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 833 $76.20 $63,473.77
Disclosure

SEC source: 0001447362-21-000211 · wf-form4_163061803252124.xml · nonDerivative · entry 7

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By DJM Grantor Retained Annuity Trust No. 1

Disclosed balance after: 141,661

F6 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F10 · price: This transaction was executed in multiple trades at prices ranging from $75.690 to $76.650, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F8 · ownership.nature: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

Read SEC document
August 31, 2021 Filed Sep 2, 2021 21:27 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 500 $74.98 $37,491.00
Disclosure

SEC source: 0001447362-21-000211 · wf-form4_163061803252124.xml · nonDerivative · entry 6

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By DJM Grantor Retained Annuity Trust No. 1

Disclosed balance after: 142,494

F6 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F9 · price: This transaction was executed in multiple trades at prices ranging from $74.650 to $75.640, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F8 · ownership.nature: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

Read SEC document
August 31, 2021 Filed Sep 2, 2021 21:27 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 134 $74.05 $9,923.24
Disclosure

SEC source: 0001447362-21-000211 · wf-form4_163061803252124.xml · nonDerivative · entry 5

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By DJM Grantor Retained Annuity Trust No. 1

Disclosed balance after: 142,994

F6 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F7 · price: This transaction was executed in multiple trades at prices ranging from $73.540 to $74.475, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F8 · ownership.nature: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

Read SEC document
August 31, 2021 Filed Sep 2, 2021 21:27 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 900 $76.86 $69,174.00
Disclosure

SEC source: 0001447362-21-000211 · wf-form4_163061803252124.xml · nonDerivative · entry 4

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 346,018

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 11, 2020.

F5 · price: This transaction was executed in multiple trades at prices ranging from $76.720 to $76.960, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
August 31, 2021 Filed Sep 2, 2021 21:27 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 5,067 $76.20 $386,085.13
Disclosure

SEC source: 0001447362-21-000211 · wf-form4_163061803252124.xml · nonDerivative · entry 3

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 346,918

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 11, 2020.

F4 · price: This transaction was executed in multiple trades at prices ranging from $75.690 to $76.660, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
August 31, 2021 Filed Sep 2, 2021 21:27 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 3,139 $75.07 $235,651.01
Disclosure

SEC source: 0001447362-21-000211 · wf-form4_163061803252124.xml · nonDerivative · entry 2

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 351,985

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 11, 2020.

F3 · price: This transaction was executed in multiple trades at prices ranging from $74.680 to $75.510, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
August 31, 2021 Filed Sep 2, 2021 21:27 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 894 $73.98 $66,135.44
Disclosure

SEC source: 0001447362-21-000211 · wf-form4_163061803252124.xml · nonDerivative · entry 1

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 355,124

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 11, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $73.490 to $74.475, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
August 30, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 134 $76.10 $10,197.53
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 21

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Derek Maetzold 2020 Irrevocable Trust

Disclosed balance after: 153,365

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F14 · price: This transaction was executed in multiple trades at prices ranging from $76.040 to $76.155, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F10 · ownership.nature: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

Read SEC document
August 30, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 290 $75.24 $21,818.73
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 20

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Derek Maetzold 2020 Irrevocable Trust

Disclosed balance after: 153,499

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F12 · price: This transaction was executed in multiple trades at prices ranging from $74.840 to $75.810, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F10 · ownership.nature: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

Read SEC document
August 30, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 1,243 $74.27 $92,321.34
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 19

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Derek Maetzold 2020 Irrevocable Trust

Disclosed balance after: 153,789

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F11 · price: This transaction was executed in multiple trades at prices ranging from $73.580 to $74.560, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F10 · ownership.nature: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

Read SEC document
August 30, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 133 $76.10 $10,121.43
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 18

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By The Maetzold Descendants 2020 Trust

Disclosed balance after: 165,967

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F14 · price: This transaction was executed in multiple trades at prices ranging from $76.040 to $76.155, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F9 · ownership.nature: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

Read SEC document
August 30, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 290 $75.24 $21,818.73
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 17

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By The Maetzold Descendants 2020 Trust

Disclosed balance after: 166,100

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F12 · price: This transaction was executed in multiple trades at prices ranging from $74.840 to $75.810, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F9 · ownership.nature: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

Read SEC document
August 30, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 1,243 $74.27 $92,321.34
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 16

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By The Maetzold Descendants 2020 Trust

Disclosed balance after: 166,390

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F11 · price: This transaction was executed in multiple trades at prices ranging from $73.580 to $74.560, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F9 · ownership.nature: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

Read SEC document
August 30, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 133 $76.10 $10,121.43
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 15

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By DJM Grantor Retained Annuity Trust No. 1

Disclosed balance after: 143,128

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F14 · price: This transaction was executed in multiple trades at prices ranging from $76.040 to $76.155, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F7 · ownership.nature: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

Read SEC document
August 30, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 291 $75.24 $21,893.97
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 14

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By DJM Grantor Retained Annuity Trust No. 1

Disclosed balance after: 143,261

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F12 · price: This transaction was executed in multiple trades at prices ranging from $74.840 to $75.810, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F7 · ownership.nature: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

Read SEC document
August 30, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 1,243 $74.27 $92,321.34
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 13

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By DJM Grantor Retained Annuity Trust No. 1

Disclosed balance after: 143,552

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F11 · price: This transaction was executed in multiple trades at prices ranging from $73.580 to $74.560, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F7 · ownership.nature: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

Read SEC document
August 30, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 1,000 $76.03 $76,027.00
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 12

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 356,018

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 11, 2020.

F13 · price: This transaction was executed in multiple trades at prices ranging from $75.870 to $76.270, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
August 30, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 2,000 $75.19 $150,380.00
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 11

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 357,018

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 11, 2020.

F12 · price: This transaction was executed in multiple trades at prices ranging from $74.840 to $75.810, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
August 30, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 7,000 $74.31 $520,142.00
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 10

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 359,018

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 11, 2020.

F11 · price: This transaction was executed in multiple trades at prices ranging from $73.580 to $74.560, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
August 27, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 67 $74.65 $5,001.62
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 9

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Derek Maetzold 2020 Irrevocable Trust

Disclosed balance after: 155,032

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F8 · price: This transaction was executed in multiple trades at prices ranging from $74.650 to $74.660, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F10 · ownership.nature: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

Read SEC document
August 27, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 1,600 $74.00 $118,392.00
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 8

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Derek Maetzold 2020 Irrevocable Trust

Disclosed balance after: 155,099

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F6 · price: This transaction was executed in multiple trades at prices ranging from $73.620 to $74.460, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F10 · ownership.nature: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

Read SEC document
August 27, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 67 $74.65 $5,001.62
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 7

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By The Maetzold Descendants 2020 Trust

Disclosed balance after: 167,633

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F8 · price: This transaction was executed in multiple trades at prices ranging from $74.650 to $74.660, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F9 · ownership.nature: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

Read SEC document
August 27, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 1,600 $74.00 $118,392.00
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 6

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By The Maetzold Descendants 2020 Trust

Disclosed balance after: 167,700

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F6 · price: This transaction was executed in multiple trades at prices ranging from $73.620 to $74.460, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F9 · ownership.nature: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

Read SEC document
August 27, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 66 $74.65 $4,926.97
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 5

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By DJM Grantor Retained Annuity Trust No. 1

Disclosed balance after: 144,795

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F8 · price: This transaction was executed in multiple trades at prices ranging from $74.650 to $74.660, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F7 · ownership.nature: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

Read SEC document
August 27, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 1,600 $74.00 $118,392.00
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 4

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By DJM Grantor Retained Annuity Trust No. 1

Disclosed balance after: 144,861

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F6 · price: This transaction was executed in multiple trades at prices ranging from $73.620 to $74.460, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F7 · ownership.nature: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

Read SEC document
August 27, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 400 $74.87 $29,948.80
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 3

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 366,018

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 11, 2020.

F4 · price: This transaction was executed in multiple trades at prices ranging from $74.830 to $75.000, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
August 27, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 8,100 $74.11 $600,250.50
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 2

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 366,418

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 11, 2020.

F3 · price: This transaction was executed in multiple trades at prices ranging from $73.830 to $74.790, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
August 27, 2021 Filed Aug 31, 2021 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 1,500 $73.62 $110,431.50
Disclosure

SEC source: 0001447362-21-000209 · wf-form4_163044050123690.xml · nonDerivative · entry 1

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 374,518

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 11, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $72.830 to $73.820, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
August 23, 2021 Filed Aug 25, 2021 20:13 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 2,500 $70.57 $176,432.50
Disclosure

SEC source: 0001447362-21-000207 · wf-form4_162992241679092.xml · nonDerivative · entry 3

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Derek Maetzold 2020 Irrevocable Trust

Disclosed balance after: 156,699

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $70.125 to $70.930, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F5 · ownership.nature: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

Read SEC document
August 23, 2021 Filed Aug 25, 2021 20:13 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 2,500 $70.57 $176,432.50
Disclosure

SEC source: 0001447362-21-000207 · wf-form4_162992241679092.xml · nonDerivative · entry 2

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By The Maetzold Descendants 2020 Trust

Disclosed balance after: 169,300

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $70.125 to $70.930, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F4 · ownership.nature: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

Read SEC document
August 23, 2021 Filed Aug 25, 2021 20:13 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 2,500 $70.57 $176,432.50
Disclosure

SEC source: 0001447362-21-000207 · wf-form4_162992241679092.xml · nonDerivative · entry 1

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By DJM Grantor Retained Annuity Trust No. 1

Disclosed balance after: 146,461

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F2 · price: This transaction was executed in multiple trades at prices ranging from $70.125 to $70.930, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F3 · ownership.nature: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

Read SEC document
August 18, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 2,878 $61.47 $176,910.66
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 14

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 376,018

F1 · kind: These transactions were made pursuant to Rule 10b5-1 plans adopted by the Reporting Person on December 11, 2020.

F13 · price: This transaction was executed in multiple trades at prices ranging from $61.16 to $61.68, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
August 18, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 1,612 $60.79 $97,993.48
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 13

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 378,896

F1 · kind: These transactions were made pursuant to Rule 10b5-1 plans adopted by the Reporting Person on December 11, 2020.

F12 · price: This transaction was executed in multiple trades at prices ranging from $60.14 to $61.11, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Read SEC document
August 17, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 33 $60.02 $1,980.66
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 12

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Derek Maetzold 2020 Irrevocable Trust

Disclosed balance after: 159,199

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F9 · price: This transaction was executed in multiple trades at prices ranging from $60.00 to $60.07, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F11 · ownership.nature: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

Read SEC document
August 17, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 333 $59.70 $19,880.10
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 11

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Derek Maetzold 2020 Irrevocable Trust

Disclosed balance after: 159,232

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F8 · price: This transaction was executed in multiple trades at prices ranging from $59.00 to $59.99, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F11 · ownership.nature: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

Read SEC document
August 17, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 467 $58.26 $27,207.42
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 10

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Derek Maetzold 2020 Irrevocable Trust

Disclosed balance after: 159,565

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F6 · price: This transaction was executed in multiple trades at prices ranging from $57.88 to $58.56, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F11 · ownership.nature: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

Read SEC document
August 17, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 34 $60.02 $2,040.68
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 9

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By The Maetzold Descendants 2020 Trust

Disclosed balance after: 171,800

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F9 · price: This transaction was executed in multiple trades at prices ranging from $60.00 to $60.07, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F10 · ownership.nature: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

Read SEC document
August 17, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 334 $59.70 $19,939.80
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 8

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By The Maetzold Descendants 2020 Trust

Disclosed balance after: 171,834

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F8 · price: This transaction was executed in multiple trades at prices ranging from $59.00 to $59.99, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F10 · ownership.nature: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

Read SEC document
August 17, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 466 $58.26 $27,149.16
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 7

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By The Maetzold Descendants 2020 Trust

Disclosed balance after: 172,168

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F6 · price: This transaction was executed in multiple trades at prices ranging from $57.88 to $58.56, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F10 · ownership.nature: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

Read SEC document
August 17, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 33 $60.02 $1,980.66
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 6

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By DJM Grantor Retained Annuity Trust No. 1

Disclosed balance after: 148,961

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F9 · price: This transaction was executed in multiple trades at prices ranging from $60.00 to $60.07, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F7 · ownership.nature: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

Read SEC document
August 17, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 333 $59.70 $19,880.10
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 5

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By DJM Grantor Retained Annuity Trust No. 1

Disclosed balance after: 148,994

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F8 · price: This transaction was executed in multiple trades at prices ranging from $59.00 to $59.99, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F7 · ownership.nature: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

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August 17, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 467 $58.26 $27,207.42
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 4

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By DJM Grantor Retained Annuity Trust No. 1

Disclosed balance after: 149,327

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F6 · price: This transaction was executed in multiple trades at prices ranging from $57.88 to $58.56, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F7 · ownership.nature: Held by DJM Grantor Retained Annuity Trust No. 1 of which the Reporting Person is the trustee and beneficiary.

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August 17, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 1,410 $60.01 $84,614.10
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 3

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 380,508

F1 · kind: These transactions were made pursuant to Rule 10b5-1 plans adopted by the Reporting Person on December 11, 2020.

F4 · price: This transaction was executed in multiple trades at prices ranging from $59.93 to $60.20, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

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August 17, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 1,401 $59.47 $83,317.47
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 2

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 381,918

F1 · kind: These transactions were made pursuant to Rule 10b5-1 plans adopted by the Reporting Person on December 11, 2020.

F3 · price: This transaction was executed in multiple trades at prices ranging from $58.92 to $59.85, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

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August 17, 2021 Filed Aug 19, 2021 21:28 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 2,699 $58.24 $157,189.76
Disclosure

SEC source: 0001447362-21-000205 · wf-form4_162940848523431.xml · nonDerivative · entry 1

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 383,319

F1 · kind: These transactions were made pursuant to Rule 10b5-1 plans adopted by the Reporting Person on December 11, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $57.81 to $58.71, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

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August 16, 2021 Filed Aug 17, 2021 20:39 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 266 $62.01 $16,494.66
Disclosure

SEC source: 0001447362-21-000201 · wf-form4_162923274149851.xml · nonDerivative · entry 17

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Derek Maetzold 2020 Irrevocable Trust

Disclosed balance after: 160,032

F4 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F14 · price: This transaction was executed in multiple trades at prices ranging from $61.75 to $62.52, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F9 · ownership.nature: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

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August 16, 2021 Filed Aug 17, 2021 20:39 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 567 $61.21 $34,706.07
Disclosure

SEC source: 0001447362-21-000201 · wf-form4_162923274149851.xml · nonDerivative · entry 16

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Derek Maetzold 2020 Irrevocable Trust

Disclosed balance after: 160,298

F4 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F13 · price: This transaction was executed in multiple trades at prices ranging from $60.72 to $61.66, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F9 · ownership.nature: Held by Derek Maetzold 2020 Irrevocable Trust of which the Reporting Person is the trustee and his children are beneficiaries.

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August 16, 2021 Filed Aug 17, 2021 20:39 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 267 $62.01 $16,556.67
Disclosure

SEC source: 0001447362-21-000201 · wf-form4_162923274149851.xml · nonDerivative · entry 15

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By The Maetzold Descendants 2020 Trust

Disclosed balance after: 172,634

F4 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F14 · price: This transaction was executed in multiple trades at prices ranging from $61.75 to $62.52, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F8 · ownership.nature: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

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August 16, 2021 Filed Aug 17, 2021 20:39 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 566 $61.21 $34,644.86
Disclosure

SEC source: 0001447362-21-000201 · wf-form4_162923274149851.xml · nonDerivative · entry 14

MAETZOLD DEREK J · CIK 0001239501 · Director · Pres. & Chief Exec. Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By The Maetzold Descendants 2020 Trust

Disclosed balance after: 172,901

F4 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by DJM Grantor Retained Annuity Trust No. 1, The Maetzold Descendants 2020 Trust, and the Derek Maetzold 2020 Irrevocable Trust on June 15, 2021.

F13 · price: This transaction was executed in multiple trades at prices ranging from $60.72 to $61.66, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F8 · ownership.nature: Held by The Maetzold Descendants 2020 Trust of which the Reporting Person's spouse is the trustee and the Reporting Person's spouse and their children are beneficiaries.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.