CSTL

SEC source: 0001447362-20-000287 · wf-form4_160797268160615.xml · nonDerivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,306,204

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2020.

F6 · price: This transaction was executed in multiple trades at prices ranging from $60.320 to $61.300, 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.

SEC source: 0001447362-20-000287 · wf-form4_160797268160615.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,308,324

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2020.

F5 · price: This transaction was executed in multiple trades at prices ranging from $59.190 to $60.120, 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.

SEC source: 0001447362-20-000287 · wf-form4_160797268160615.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,317,579

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2020.

F4 · price: This transaction was executed in multiple trades at prices ranging from $58.120 to $59.100, 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.

SEC source: 0001447362-20-000285 · wf-form4_160797227377113.xml · nonDerivative · entry 5

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 778,310

F9 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on August 13, 2020, as amended on September 10, 2020.

F10 · price: This transaction was executed in multiple trades at prices ranging from $62.300 to $62.320, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F5 · ownership.nature: Held by 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.

F6 · 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.

SEC source: 0001447362-20-000285 · wf-form4_160797227377113.xml · nonDerivative · entry 4

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 778,410

F3 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on August 13, 2020, as amended on September 10, 2020.

F8 · price: This transaction was executed in multiple trades at prices ranging from $62.000 to $62.080, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F5 · ownership.nature: Held by 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.

F6 · 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.

SEC source: 0001447362-20-000285 · wf-form4_160797227377113.xml · nonDerivative · entry 3

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 778,903

F3 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on August 13, 2020, as amended on September 10, 2020.

F7 · price: This transaction was executed in multiple trades at prices ranging from $60.170 to $60.590, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F5 · ownership.nature: Held by 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.

F6 · 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.

SEC source: 0001447362-20-000285 · wf-form4_160797227377113.xml · nonDerivative · entry 2

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 779,403

F3 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on August 13, 2020, as amended on September 10, 2020.

F4 · price: This transaction was executed in multiple trades at prices ranging from $59.150 to $60.100, 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.

F5 · 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.

F6 · 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.

SEC source: 0001447362-20-000285 · wf-form4_160797227377113.xml · nonDerivative · entry 1

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 132,178

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on September 10, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $59.750 to $60.295, 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.

SEC source: 0001447362-20-000282 · wf-form4_160797194759818.xml · nonDerivative · entry 7

BRADBURY DANIEL · CIK 0001236397 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By LLC

Disclosed balance after: 761,191

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by BioBrit, LLC (the "LLC") on September 5, 2020.

F7 · price: This transaction was executed in multiple trades at prices ranging from $61.600 to $61.900, 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.

F2 · ownership.nature: Held by BioBrit, LLC (the "LLC"), of which the Reporting Person is the managing member and has voting and investment power over the shares.

SEC source: 0001447362-20-000282 · wf-form4_160797194759818.xml · nonDerivative · entry 6

BRADBURY DANIEL · CIK 0001236397 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By LLC

Disclosed balance after: 761,391

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by BioBrit, LLC (the "LLC") on September 5, 2020.

F6 · price: This transaction was executed in multiple trades at prices ranging from $60.435 to $61.325, 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.

F2 · ownership.nature: Held by BioBrit, LLC (the "LLC"), of which the Reporting Person is the managing member and has voting and investment power over the shares.

SEC source: 0001447362-20-000282 · wf-form4_160797194759818.xml · nonDerivative · entry 5

BRADBURY DANIEL · CIK 0001236397 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By LLC

Disclosed balance after: 763,548

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by BioBrit, LLC (the "LLC") on September 5, 2020.

F5 · price: This transaction was executed in multiple trades at prices ranging from $59.435 to $60.410, 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.

F2 · ownership.nature: Held by BioBrit, LLC (the "LLC"), of which the Reporting Person is the managing member and has voting and investment power over the shares.

SEC source: 0001447362-20-000282 · wf-form4_160797194759818.xml · nonDerivative · entry 4

BRADBURY DANIEL · CIK 0001236397 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By LLC

Disclosed balance after: 766,828

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by BioBrit, LLC (the "LLC") on September 5, 2020.

F4 · price: This transaction was executed in multiple trades at prices ranging from $58.370 to $59.345, 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.

F2 · ownership.nature: Held by BioBrit, LLC (the "LLC"), of which the Reporting Person is the managing member and has voting and investment power over the shares.

SEC source: 0001447362-20-000278 · wf-form4_160772756746405.xml · nonDerivative · entry 6

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 792,969

F10 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on August 13, 2020, as amended on September 10, 2020.

F8 · price: These transactions were executed in multiple trades at prices ranging from $59.15 to $59.39, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F5 · ownership.nature: Held by 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.

F6 · 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.

SEC source: 0001447362-20-000278 · wf-form4_160772756746405.xml · nonDerivative · entry 5

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 797,581

F9 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 QP LP on August 13, 2020, as amended on September 10, 2020.

F8 · price: These transactions were executed in multiple trades at prices ranging from $59.15 to $59.39, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F5 · ownership.nature: Held by 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.

F6 · 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.

SEC source: 0001447362-20-000278 · wf-form4_160772756746405.xml · nonDerivative · entry 4

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 802,969

F3 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on August 13, 2020, as amended on September 10, 2020.

F8 · price: These transactions were executed in multiple trades at prices ranging from $59.15 to $59.39, inclusive. The price reported above reflects the weighted-average sale price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F5 · ownership.nature: Held by 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.

F6 · 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.

SEC source: 0001447362-20-000291 · wf-form4_160797306720087.xml · derivative · entry 2

Stokes Frank · CIK 0001782815 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,000

Underlying: Common Stock · 8,000 shares

Expires not disclosed

F2 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents the right to receive one share of the Issuer's Common Stock.

F3 · derivative.exercise_date: The RSUs vest in four equal annual installments beginning on December 10, 2021.

F3 · derivative.expiration_date: The RSUs vest in four equal annual installments beginning on December 10, 2021.

SEC source: 0001447362-20-000291 · wf-form4_160797306720087.xml · derivative · entry 1

Stokes Frank · CIK 0001782815 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,000

Underlying: Common Stock · 31,000 shares

Expires 2030-12-09

F1 · derivative.exercise_date: 25% of shares shall vest on December 10, 2021, and the remaining shares shall vest in 36 equal monthly installments thereafter.

SEC source: 0001447362-20-000289 · wf-form4_160797283348524.xml · derivative · entry 2

Spiess Bernhard E. · CIK 0001782994 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,000

Underlying: Common Stock · 6,000 shares

Expires not disclosed

F2 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents the right to receive one share of the Issuer's Common Stock.

F3 · derivative.exercise_date: The RSUs vest in four equal annual installments beginning on December 10, 2021.

F3 · derivative.expiration_date: The RSUs vest in four equal annual installments beginning on December 10, 2021.

SEC source: 0001447362-20-000289 · wf-form4_160797283348524.xml · derivative · entry 1

Spiess Bernhard E. · CIK 0001782994 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,000

Underlying: Common Stock · 23,000 shares

Expires 2030-12-09

F1 · derivative.exercise_date: 25% of shares shall vest on December 10, 2021, and the remaining shares shall vest in 36 equal monthly installments thereafter.

SEC source: 0001447362-20-000287 · wf-form4_160797268160615.xml · derivative · entry 9

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,450

Underlying: Common Stock · 21,450 shares

Expires not disclosed

F10 · derivative.exercise_price: Each Restricted Stock Unit ("RSU") represents the right to receive one share of the Issuer's Common Stock.

F11 · derivative.exercise_date: The RSUs vest in four equal annual installments beginning on December 10, 2021.

F11 · derivative.expiration_date: The RSUs vest in four equal annual installments beginning on December 10, 2021.

SEC source: 0001447362-20-000287 · wf-form4_160797268160615.xml · derivative · entry 8

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,100

Underlying: Common Stock · 87,100 shares

Expires 2030-12-09

F9 · derivative.exercise_date: 25% of shares shall vest on December 10, 2021, and the remaining shares shall vest in 36 equal monthly installments thereafter.

SEC source: 0001447362-20-000287 · wf-form4_160797268160615.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,321,002

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2020.

F3 · price: This transaction was executed in multiple trades at prices ranging from $58.230 to $59.225, 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.

SEC source: 0001447362-20-000287 · wf-form4_160797268160615.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,335,302

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $56.800 to $57.610, 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.

SEC source: 0001447362-20-000282 · wf-form4_160797194759818.xml · nonDerivative · entry 3

BRADBURY DANIEL · CIK 0001236397 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By LLC

Disclosed balance after: 767,828

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by BioBrit, LLC (the "LLC") on September 5, 2020.

F2 · ownership.nature: Held by BioBrit, LLC (the "LLC"), of which the Reporting Person is the managing member and has voting and investment power over the shares.

SEC source: 0001447362-20-000282 · wf-form4_160797194759818.xml · nonDerivative · entry 2

BRADBURY DANIEL · CIK 0001236397 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By LLC

Disclosed balance after: 767,928

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by BioBrit, LLC (the "LLC") on September 5, 2020.

F3 · price: This transaction was executed in multiple trades at prices ranging from $58.210 to $59.185, 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.

F2 · ownership.nature: Held by BioBrit, LLC (the "LLC"), of which the Reporting Person is the managing member and has voting and investment power over the shares.

SEC source: 0001447362-20-000282 · wf-form4_160797194759818.xml · nonDerivative · entry 1

BRADBURY DANIEL · CIK 0001236397 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By LLC

Disclosed balance after: 771,478

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by BioBrit, LLC (the "LLC") on September 5, 2020.

F2 · ownership.nature: Held by BioBrit, LLC (the "LLC"), of which the Reporting Person is the managing member and has voting and investment power over the shares.

SEC source: 0001447362-20-000278 · wf-form4_160772756746405.xml · nonDerivative · entry 3

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 838,410

F3 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on August 13, 2020, as amended on September 10, 2020.

F7 · price: This transaction was executed in multiple trades at prices ranging from $57.15 to $57.98, 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.

F5 · 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.

F6 · 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.

SEC source: 0001447362-20-000278 · wf-form4_160772756746405.xml · nonDerivative · entry 2

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 843,093

F3 · kind: These transactions were made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on August 13, 2020, as amended on September 10, 2020.

F4 · price: This transaction was executed in multiple trades at prices ranging from $56.15 to $57.13, 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.

F5 · 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.

F6 · 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.

SEC source: 0001447362-20-000278 · wf-form4_160772756746405.xml · nonDerivative · entry 1

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 142,178

F1 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on September 10, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $57.75 to $58.32, 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.

SEC source: 0001447362-20-000276 · wf-form4_160755268101477.xml · nonDerivative · entry 5

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 861,234

F10 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC 2018 LP on August 13, 2020, as amended on September 10, 2020.

F11 · price: This transaction was executed in multiple trades at prices ranging from $56.150 to $56.590, 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.

F6 · 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.

F7 · 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.

SEC source: 0001447362-20-000276 · wf-form4_160755268101477.xml · nonDerivative · entry 4

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 865,846

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

F9 · price: This transaction was executed in multiple trades at prices ranging from $56.150 to $56.455, 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.

F6 · 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.

F7 · 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.

SEC source: 0001447362-20-000276 · wf-form4_160755268101477.xml · nonDerivative · entry 3

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 871,234

F4 · kind: This transaction was made pursuant to a Rule 10b5-1 plan adopted by MGC Venture Partners 2013, L.P. ("MGC 2013 LP") on August 13, 2020, as amended on September 10, 2020.

F5 · price: This transaction was executed in multiple trades at prices ranging from $56.150 to $56.900, 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.

F6 · 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.

F7 · 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.

SEC source: 0001447362-20-000276 · wf-form4_160755268101477.xml · nonDerivative · entry 2

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 152,178

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

F3 · price: This transaction was executed in multiple trades at prices ranging from $55.750 to $56.330, 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.

SEC source: 0001447362-21-000004 · wf-form5_161040221239297.xml · nonDerivative · entry 2

BRADBURY DANIEL · CIK 0001236397 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By LLC

Disclosed balance after: 415,606

F3 · shares: On December 8, 2020, the reporting person transferred 157,781 shares of Castle Biosciences, Inc. common stock to the Daniel Bradbury Irrecovable Descendant's Trust of which the reporting person and his spouse are trustees and their children are beneficiaries.

F2 · ownership.nature: Held by BioBrit, LLC (the "LLC"), of which the Reporting Person is the managing member and has voting and investment power over the shares.

SEC source: 0001447362-21-000004 · wf-form5_161040221239297.xml · nonDerivative · entry 1

BRADBURY DANIEL · CIK 0001236397 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By LLC

Disclosed balance after: 573,387

F1 · shares: On December 8, 2020, the reporting person transferred 157,804 shares of Castle Biosciences, Inc. common stock to the Annette Bradbury Irrecovable Descendant's Trust of which the reporting person and his spouse are trustees and their children are beneficiaries.

F2 · ownership.nature: Held by BioBrit, LLC (the "LLC"), of which the Reporting Person is the managing member and has voting and investment power over the shares.

SEC source: 0001447362-20-000276 · wf-form4_160755268101477.xml · nonDerivative · entry 1

Cook Joseph C. III · CIK 0001783205 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 159,578

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

F2 · price: This transaction was executed in multiple trades at prices ranging from $55.750 to $56.040, 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.

SEC source: 0001447362-20-000274 · wf-form4_160712103652308.xml · nonDerivative · entry 6

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,336,002

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on September 10, 2020.

F6 · price: This transaction was executed in multiple trades at prices ranging from $51.260 to $51.985, 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.

SEC source: 0001447362-20-000274 · wf-form4_160712103652308.xml · nonDerivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,342,252

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on September 10, 2020.

F5 · price: This transaction was executed in multiple trades at prices ranging from $51.170 to $51.955, 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.

SEC source: 0001447362-20-000274 · wf-form4_160712103652308.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,346,378

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on September 10, 2020.

F4 · price: This transaction was executed in multiple trades at prices ranging from $50.170 to $51.165, 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.

SEC source: 0001447362-20-000272 · wf-form4_160711641161876.xml · derivative · entry 2

Stokes Frank · CIK 0001782815 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,712

Underlying: Common Stock · 2,000 shares

Expires 2029-03-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 25% of the 28,712 shares originally subject to the option vested on March 13, 2020, and the remaining shares shall vest in 36 equal monthly installments thereafter.

SEC source: 0001447362-20-000272 · wf-form4_160711641161876.xml · nonDerivative · entry 1

Stokes Frank · CIK 0001782815 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,886

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001447362-20-000274 · wf-form4_160712103652308.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,348,502

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on September 10, 2020.

SEC source: 0001447362-20-000274 · wf-form4_160712103652308.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,348,602

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on September 10, 2020.

F3 · price: This transaction was executed in multiple trades at prices ranging from $49.870 to $50.715, 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.

SEC source: 0001447362-20-000274 · wf-form4_160712103652308.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,353,452

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on September 10, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $48.860 to $49.825, 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.

SEC source: 0001447362-20-000270 · wf-form4_160702964050490.xml · nonDerivative · entry 1

Spiess Bernhard E. · CIK 0001782994 · Chief Business Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,747

F1 · price: This transaction was executed in multiple trades at prices ranging from $49.68 to $50.08, 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.

SEC source: 0001447362-20-000268 · wf-form4_160625265862994.xml · nonDerivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,354,752

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2020.

F6 · price: This transaction was executed in multiple trades at prices ranging from $47.59 to $48.41, 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.

SEC source: 0001447362-20-000268 · wf-form4_160625265862994.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,355,258

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2020.

F5 · price: This transaction was executed in multiple trades at prices ranging from $46.56 to $47.53, 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.

SEC source: 0001447362-20-000268 · wf-form4_160625265862994.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,358,002

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2020.

F4 · price: This transaction was executed in multiple trades at prices ranging from $48.50 to $48.94, 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.

SEC source: 0001447362-20-000268 · wf-form4_160625265862994.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,358,502

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2020.

F3 · price: This transaction was executed in multiple trades at prices ranging from $47.42 to $48.41, 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.

SEC source: 0001447362-20-000268 · wf-form4_160625265862994.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,361,646

F1 · kind: The transactions on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 2, 2020.

F2 · price: This transaction was executed in multiple trades at prices ranging from $46.37 to $47.28, 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.