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person · Reporting owner

Cook Joseph C. III

Disclosed activity across 1 company

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141017
SEC CIK
0001783205

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
CASTLE BIOSCIENCES INCCSTL · Entity 359DirectorMarch 18, 2021March 22, 2021

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 March 18, 2021 · Filed March 22, 2021

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect124,407 Reported balance After 2021-03-18 transaction · row 1
1 source row

Row 1 · 2021-03-18 · Exercise / conversion · Acquired 12,229 · Balance 124,407

Stock option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $16.00 · Expires 2029-07-23Direct18,666 Reported balance After 2021-03-18 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2021-03-18 · Exercise / conversion · Disposed 12,229 · Balance 18,666

F4: 25% of the 30,895 shares originally subject to the option vested on August 1, 2020, and the remaining shares vest in 36 equal monthly installments thereafter.

Common StockSEC Table I · non-derivativeIndirectSee footnotes628,410 Reported balance Holding disclosure · report date 2021-03-18 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · Balance 628,410

F1: Held by MGC Venture Partners 2013, L.P. ("MGC 2013 LP"), MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F2: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Common StockSEC Table I · non-derivativeIndirectSee footnotes717 Reported balance Holding disclosure · report date 2021-03-18 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 717

F3: Held by MOD Partners, LLC ("MOD LLC"). The Reporting Person is the President and a member of MOD LLC and has voting and investment power over the shares held by MOD LLC. The Reporting Person disclaims beneficial ownership of the shares held by MOD LLC as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Filing footnotes · ownership attribution and instrument terms

F1: Held by MGC Venture Partners 2013, L.P. ("MGC 2013 LP"), MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F2: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

F3: Held by MOD Partners, LLC ("MOD LLC"). The Reporting Person is the President and a member of MOD LLC and has voting and investment power over the shares held by MOD LLC. The Reporting Person disclaims beneficial ownership of the shares held by MOD LLC as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

F4: 25% of the 30,895 shares originally subject to the option vested on August 1, 2020, and the remaining shares vest in 36 equal monthly installments thereafter.

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
September 08, 2020 Filed Sep 9, 2020 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 25,967 $48.37 $1,255,971.86
Disclosure

SEC source: 0001447362-20-000211 · wf-form4_159968211664689.xml · nonDerivative · entry 11

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 938,088

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F15 · price: This transaction was executed in multiple trades at prices ranging from $47.800 to $48.790, 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.

F3 · ownership.nature: Held by MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 08, 2020 Filed Sep 9, 2020 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 5,624 $47.13 $265,047.87
Disclosure

SEC source: 0001447362-20-000211 · wf-form4_159968211664689.xml · nonDerivative · entry 10

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 964,055

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F14 · price: This transaction was executed in multiple trades at prices ranging from $46.800 to $47.770, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 08, 2020 Filed Sep 9, 2020 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 3,990 $46.32 $184,804.83
Disclosure

SEC source: 0001447362-20-000211 · wf-form4_159968211664689.xml · nonDerivative · entry 9

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 969,679

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F2 · price: These transactions were executed in multiple trades at prices ranging from $45.800 to $46.790, inclusive. The prices reported above reflect the weighted-average sale prices. 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 transactions were effected.

F3 · ownership.nature: Held by MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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September 04, 2020 Filed Sep 9, 2020 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 3,500 $48.24 $168,829.50
Disclosure

SEC source: 0001447362-20-000211 · wf-form4_159968211664689.xml · nonDerivative · entry 8

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 973,669

F10 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F13 · price: This transaction was executed in multiple trades at prices ranging from $48.000 to $48.830, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 04, 2020 Filed Sep 9, 2020 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 3,475 $47.36 $164,562.10
Disclosure

SEC source: 0001447362-20-000211 · wf-form4_159968211664689.xml · nonDerivative · entry 7

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 977,169

F10 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F12 · price: This transaction was executed in multiple trades at prices ranging from $47.000 to $47.980, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 04, 2020 Filed Sep 9, 2020 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 4,260 $46.59 $198,460.62
Disclosure

SEC source: 0001447362-20-000211 · wf-form4_159968211664689.xml · nonDerivative · entry 6

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 980,644

F10 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F11 · price: This transaction was executed in multiple trades at prices ranging from $46.000 to $46.990, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 04, 2020 Filed Sep 9, 2020 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 3,295 $48.26 $159,003.52
Disclosure

SEC source: 0001447362-20-000211 · wf-form4_159968211664689.xml · nonDerivative · entry 5

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 984,904

F6 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F9 · price: This transaction was executed in multiple trades at prices ranging from $48.000 to $48.820, 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.

F3 · ownership.nature: Held by MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 04, 2020 Filed Sep 9, 2020 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 3,894 $47.39 $184,524.98
Disclosure

SEC source: 0001447362-20-000211 · wf-form4_159968211664689.xml · nonDerivative · entry 4

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 988,199

F6 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F8 · price: This transaction was executed in multiple trades at prices ranging from $47.000 to $47.990, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 04, 2020 Filed Sep 9, 2020 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 4,080 $46.58 $190,042.32
Disclosure

SEC source: 0001447362-20-000211 · wf-form4_159968211664689.xml · nonDerivative · entry 3

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 992,093

F6 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F7 · price: This transaction was executed in multiple trades at prices ranging from $46.000 to $46.995, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 04, 2020 Filed Sep 9, 2020 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 19,576 $47.07 $921,383.59
Disclosure

SEC source: 0001447362-20-000211 · wf-form4_159968211664689.xml · nonDerivative · entry 2

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 996,173

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F5 · price: This transaction was executed in multiple trades at prices ranging from $46.800 to $47.510, 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.

F3 · ownership.nature: Held by MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 04, 2020 Filed Sep 9, 2020 20:08 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 19,758 $46.33 $915,309.11
Disclosure

SEC source: 0001447362-20-000211 · wf-form4_159968211664689.xml · nonDerivative · entry 1

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,015,749

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F2 · price: These transactions were executed in multiple trades at prices ranging from $45.800 to $46.790, inclusive. The prices reported above reflect the weighted-average sale prices. 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 transactions were effected.

F3 · ownership.nature: Held by MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 03, 2020 Filed Sep 4, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 2,602 $46.09 $119,926.18
Disclosure

SEC source: 0001447362-20-000203 · wf-form4_159924991963365.xml · nonDerivative · entry 6

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,035,507

F7 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F11 · price: This transaction was executed in multiple trades at prices ranging from $46.00 to $46.32, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 03, 2020 Filed Sep 4, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 2,600 $46.10 $119,860.00
Disclosure

SEC source: 0001447362-20-000203 · wf-form4_159924991963365.xml · nonDerivative · entry 5

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,038,109

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F10 · price: This transaction was executed in multiple trades at prices ranging from $46.00 to $46.29, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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September 03, 2020 Filed Sep 4, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 24,998 $46.00 $1,149,908.00
Disclosure

SEC source: 0001447362-20-000203 · wf-form4_159924991963365.xml · nonDerivative · entry 4

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,040,709

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F9 · price: This transaction was executed in multiple trades at prices ranging from $45.80 to $46.34, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 02, 2020 Filed Sep 4, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 300 $46.02 $13,806.00
Disclosure

SEC source: 0001447362-20-000203 · wf-form4_159924991963365.xml · nonDerivative · entry 3

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,065,707

F7 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F8 · price: This transaction was executed in multiple trades at prices ranging from $46.01 to $46.04, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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September 02, 2020 Filed Sep 4, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 400 $46.02 $18,408.00
Disclosure

SEC source: 0001447362-20-000203 · wf-form4_159924991963365.xml · nonDerivative · entry 2

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,066,007

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F6 · price: This transaction was executed in multiple trades at prices ranging from $46.00 to $46.04, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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September 02, 2020 Filed Sep 4, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 6,665 $45.99 $306,523.35
Disclosure

SEC source: 0001447362-20-000203 · wf-form4_159924991963365.xml · nonDerivative · entry 1

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,066,407

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $45.80 to $46.16, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 01, 2020 Filed Sep 2, 2020 21:45 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 2,147 $46.03 $98,826.41
Disclosure

SEC source: 0001447362-20-000199 · wf-form4_159908308910869.xml · nonDerivative · entry 4

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,073,072

F8 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F9 · price: This transaction was executed in multiple trades at prices ranging from $46.00 to $46.14, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 01, 2020 Filed Sep 2, 2020 21:45 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 2,200 $46.02 $101,244.00
Disclosure

SEC source: 0001447362-20-000199 · wf-form4_159908308910869.xml · nonDerivative · entry 3

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,075,219

F6 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F7 · price: This transaction was executed in multiple trades at prices ranging from $46.00 to $46.13, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
September 01, 2020 Filed Sep 2, 2020 21:45 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 35,963 $45.95 $1,652,499.85
Disclosure

SEC source: 0001447362-20-000199 · wf-form4_159908308910869.xml · nonDerivative · entry 2

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,077,419

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F5 · price: This transaction was executed in multiple trades at prices ranging from $45.80 to $46.29, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 31, 2020 Filed Sep 2, 2020 21:45 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 8,228 $45.84 $377,171.52
Disclosure

SEC source: 0001447362-20-000199 · wf-form4_159908308910869.xml · nonDerivative · entry 1

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,113,382

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $45.80 to $45.96, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 28, 2020 Filed Aug 31, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 3,609 $46.15 $166,555.35
Disclosure

SEC source: 0001447362-20-000195 · wf-form4_159890429738649.xml · nonDerivative · entry 4

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,121,610

F8 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F9 · price: This transaction was executed in multiple trades at prices ranging from $46.00 to $46.46, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 28, 2020 Filed Aug 31, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 3,605 $46.16 $166,406.80
Disclosure

SEC source: 0001447362-20-000195 · wf-form4_159890429738649.xml · nonDerivative · entry 3

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,125,219

F6 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F7 · price: This transaction was executed in multiple trades at prices ranging from $46.00 to $46.47, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 28, 2020 Filed Aug 31, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 48,487 $46.06 $2,233,311.22
Disclosure

SEC source: 0001447362-20-000195 · wf-form4_159890429738649.xml · nonDerivative · entry 2

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,128,824

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F5 · price: This transaction was executed in multiple trades at prices ranging from $45.80 to $46.47, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 27, 2020 Filed Aug 31, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 16,239 $45.89 $745,207.71
Disclosure

SEC source: 0001447362-20-000195 · wf-form4_159890429738649.xml · nonDerivative · entry 1

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,177,311

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $45.80 to $46.01, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 26, 2020 Filed Aug 27, 2020 20:04 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 100 $46.00 $4,600.00
Disclosure

SEC source: 0001447362-20-000193 · wf-form4_159855867654281.xml · nonDerivative · entry 6

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,193,550

F7 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F3 · ownership.nature: Held by MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 26, 2020 Filed Aug 27, 2020 20:04 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 70 $46.00 $3,220.00
Disclosure

SEC source: 0001447362-20-000193 · wf-form4_159855867654281.xml · nonDerivative · entry 5

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,193,650

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F3 · ownership.nature: Held by MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 26, 2020 Filed Aug 27, 2020 20:04 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 4,879 $45.85 $223,692.39
Disclosure

SEC source: 0001447362-20-000193 · wf-form4_159855867654281.xml · nonDerivative · entry 4

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,193,720

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F8 · price: This transaction was executed in multiple trades at prices ranging from $45.800 to $46.100, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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August 25, 2020 Filed Aug 27, 2020 20:04 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 200 $46.05 $9,209.00
Disclosure

SEC source: 0001447362-20-000193 · wf-form4_159855867654281.xml · nonDerivative · entry 3

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,198,599

F7 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F6 · price: This transaction was executed in multiple trades at prices ranging from $46.000 to $46.090, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 25, 2020 Filed Aug 27, 2020 20:04 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 200 $46.05 $9,209.00
Disclosure

SEC source: 0001447362-20-000193 · wf-form4_159855867654281.xml · nonDerivative · entry 2

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,198,799

F5 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F6 · price: This transaction was executed in multiple trades at prices ranging from $46.000 to $46.090, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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August 25, 2020 Filed Aug 27, 2020 20:04 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 17,148 $45.90 $787,007.46
Disclosure

SEC source: 0001447362-20-000193 · wf-form4_159855867654281.xml · nonDerivative · entry 1

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,198,999

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $45.800 to $46.125, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 24, 2020 Filed Aug 25, 2020 20:11 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 8,877 $45.90 $407,454.30
Disclosure

SEC source: 0001447362-20-000191 · wf-form4_159838628445835.xml · nonDerivative · entry 2

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,216,147

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F5 · price: This transaction was executed in multiple trades at prices ranging from $45.80 to $46.01, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 21, 2020 Filed Aug 25, 2020 20:11 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 6,017 $45.85 $275,879.45
Disclosure

SEC source: 0001447362-20-000191 · wf-form4_159838628445835.xml · nonDerivative · entry 1

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,225,024

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $45.80 to $45.95, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 20, 2020 Filed Aug 21, 2020 20:06 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 300 $46.06 $13,818.00
Disclosure

SEC source: 0001447362-20-000188 · wf-form4_159804038445523.xml · nonDerivative · entry 4

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,231,041

F7 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F8 · price: This transaction was executed in multiple trades at prices ranging from $46.03 to $46.08, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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August 20, 2020 Filed Aug 21, 2020 20:06 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 100 $46.03 $4,603.00
Disclosure

SEC source: 0001447362-20-000188 · wf-form4_159804038445523.xml · nonDerivative · entry 3

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,231,341

F6 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F3 · ownership.nature: Held by MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 20, 2020 Filed Aug 21, 2020 20:06 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 8,395 $45.84 $384,826.80
Disclosure

SEC source: 0001447362-20-000188 · wf-form4_159804038445523.xml · nonDerivative · entry 2

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,231,441

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F5 · price: This transaction was executed in multiple trades at prices ranging from $45.80 to $46.03, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
August 19, 2020 Filed Aug 21, 2020 20:06 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 8,574 $45.83 $392,946.42
Disclosure

SEC source: 0001447362-20-000188 · wf-form4_159804038445523.xml · nonDerivative · entry 1

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,239,836

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $45.80 to $45.90, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
July 09, 2020 Filed Jul 13, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 3,107 $43.08 $133,849.56
Disclosure

SEC source: 0001447362-20-000146 · wf-form4_159467072068838.xml · nonDerivative · entry 4

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,248,410

F8 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F7 · price: This transaction was executed in multiple trades at prices ranging from $43.00 to $43.47, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
July 09, 2020 Filed Jul 13, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 5,256 $43.07 $226,375.92
Disclosure

SEC source: 0001447362-20-000146 · wf-form4_159467072068838.xml · nonDerivative · entry 3

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,251,517

F6 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F7 · price: This transaction was executed in multiple trades at prices ranging from $43.00 to $43.47, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
July 09, 2020 Filed Jul 13, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 23,902 $44.00 $1,051,688.00
Disclosure

SEC source: 0001447362-20-000146 · wf-form4_159467072068838.xml · nonDerivative · entry 2

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,256,773

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F5 · price: This transaction was executed in multiple trades at prices ranging from $43.80 to $44.34, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
July 09, 2020 Filed Jul 13, 2020 20:05 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 30,725 $43.30 $1,330,392.50
Disclosure

SEC source: 0001447362-20-000146 · wf-form4_159467072068838.xml · nonDerivative · entry 1

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,280,675

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020, as amended on June 1, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $42.80 to $43.79, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
June 24, 2020 Filed Jun 26, 2020 20:13 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 100 $43.11 $4,311.00
Disclosure

SEC source: 0001447362-20-000139 · wf-form4_159320236453271.xml · nonDerivative · entry 1

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,311,400

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020.

F2 · ownership.nature: Held by MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F3 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

Read SEC document
June 23, 2020 Filed Jun 24, 2020 00:18 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 4,048 $43.07 $174,347.36
Disclosure

SEC source: 0001447362-20-000136 · wf-form4_159295791963527.xml · nonDerivative · entry 10

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,311,500

F10 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F14 · price: This transaction was executed in multiple trades at prices ranging from $43.00 to $43.62, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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June 23, 2020 Filed Jun 24, 2020 00:18 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 3,959 $43.07 $170,514.13
Disclosure

SEC source: 0001447362-20-000136 · wf-form4_159295791963527.xml · nonDerivative · entry 9

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,315,548

F7 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F13 · price: This transaction was executed in multiple trades at prices ranging from $43.00 to $43.33, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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June 23, 2020 Filed Jun 24, 2020 00:18 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 17,329 $43.08 $746,533.32
Disclosure

SEC source: 0001447362-20-000136 · wf-form4_159295791963527.xml · nonDerivative · entry 8

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,319,507

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020.

F12 · price: This transaction was executed in multiple trades at prices ranging from $43.00 to $43.38, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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June 19, 2020 Filed Jun 24, 2020 00:18 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 300 $44.05 $13,215.00
Disclosure

SEC source: 0001447362-20-000136 · wf-form4_159295791963527.xml · nonDerivative · entry 7

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,336,836

F10 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F3 · ownership.nature: Held by MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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June 19, 2020 Filed Jun 24, 2020 00:18 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 2,766 $43.53 $120,403.98
Disclosure

SEC source: 0001447362-20-000136 · wf-form4_159295791963527.xml · nonDerivative · entry 6

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,337,136

F10 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on March 13, 2020.

F11 · price: This transaction was executed in multiple trades at prices ranging from $43.00 to $43.98, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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June 19, 2020 Filed Jun 24, 2020 00:18 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 300 $44.15 $13,245.00
Disclosure

SEC source: 0001447362-20-000136 · wf-form4_159295791963527.xml · nonDerivative · entry 5

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,339,902

F7 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F9 · price: This transaction was executed in multiple trades at prices ranging from $44.05 to $44.34, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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June 19, 2020 Filed Jun 24, 2020 00:18 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 2,700 $43.52 $117,504.00
Disclosure

SEC source: 0001447362-20-000136 · wf-form4_159295791963527.xml · nonDerivative · entry 4

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,340,202

F7 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on March 13, 2020.

F8 · price: This transaction was executed in multiple trades at prices ranging from $43.00 to $43.93, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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June 19, 2020 Filed Jun 24, 2020 00:18 UTC CASTLE BIOSCIENCES INC CSTL · Entity 359 SaleCommon Stock 8,016 $43.91 $351,982.56
Disclosure

SEC source: 0001447362-20-000136 · wf-form4_159295791963527.xml · nonDerivative · entry 3

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 1,342,902

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on March 13, 2020.

F6 · price: This transaction was executed in multiple trades at prices ranging from $43.75 to $44.41, 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 MGC 2013 LP, MGC Venture Partners 2018, L.P. ("MGC 2018 LP"), MGC Venture Partners QP 2018, L.P. ("MGC 2018 QP LP") and MGC Venture Partners 2013 GP, LLC ("MGC 2013 GP"). MGC 2013 GP is the general partner of MGC 2013 LP. MGC Venture Partners 2018 GP, LLC ("MGC 2018 GP") is the general partner of MGC 2018 LP and MGC 2018 QP LP.

F4 · ownership.nature: The Reporting Person is a managing director of MGC 2013 GP and a managing partner of MGC 2018 GP, and shares voting and investment power over the shares held by MGC 2013 LP, MGC 2018 LP, MGC 2018 QP LP and MGC 2013 GP. The Reporting Person disclaims beneficial ownership of the shares held by MGC 2013 GP, MGC 2018 GP, MGC 2013 LP, MGC 2018 LP and MGC 2018 QP LP as reported herein, except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.

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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.