CDLX

SEC source: 0001666071-20-000002 · wf-form4_157808530520015.xml · nonDerivative · entry 4

Evans David Thomas · CIK 0001730451 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,236

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 23, 2019.

F5 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $63.01 to $63.52, inclusive.

SEC source: 0001666071-20-000002 · wf-form4_157808530520015.xml · nonDerivative · entry 3

Evans David Thomas · CIK 0001730451 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,836

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 23, 2019.

F4 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $62.00 to $62.94, inclusive.

SEC source: 0001666071-20-000002 · wf-form4_157808530520015.xml · nonDerivative · entry 2

Evans David Thomas · CIK 0001730451 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,501

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 23, 2019.

F3 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $61.00 to $61.99, inclusive.

SEC source: 0001666071-20-000002 · wf-form4_157808530520015.xml · nonDerivative · entry 1

Evans David Thomas · CIK 0001730451 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,616

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 23, 2019.

F2 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $60.00 to $60.96, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2), (3), (4) and (5) to this Form 4.

SEC source: 0001666071-19-000191 · wf-form4_157748508533071.xml · nonDerivative · entry 3

Grimes Scott D. · CIK 0001617486 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 396,750

F1 · kind: These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 5, 2018, as amended May 14, 2019.

F4 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $64.78 to $65.25, inclusive.

SEC source: 0001666071-19-000191 · wf-form4_157748508533071.xml · nonDerivative · entry 2

Grimes Scott D. · CIK 0001617486 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 397,510

F1 · kind: These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 5, 2018, as amended May 14, 2019.

F3 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $63.77 to $64.76, inclusive.

SEC source: 0001666071-19-000191 · wf-form4_157748508533071.xml · nonDerivative · entry 1

Grimes Scott D. · CIK 0001617486 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 403,248

F1 · kind: These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 5, 2018, as amended May 14, 2019.

F2 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $62.63 to $63.61, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2), (3) and (4) to this Form 4.

SEC source: 0001666071-19-000189 · wf-form4_157714066272824.xml · nonDerivative · entry 7

Laube Lynne Marie · CIK 0001730687 · Director · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 18,565

F9 · kind: These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the trustees of the 2013 Lynne Marie Laube GRAT fbo Hayley Marie Allbright (the "HMA GRAT") on May 14, 2019.

F8 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $61.47 to $61.48, inclusive.

F10 · ownership.nature: The reportable securities are held by the HMA GRAT.

SEC source: 0001666071-19-000189 · wf-form4_157714066272824.xml · nonDerivative · entry 6

Laube Lynne Marie · CIK 0001730687 · Director · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 18,617

F9 · kind: These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the trustees of the 2013 Lynne Marie Laube GRAT fbo Hayley Marie Allbright (the "HMA GRAT") on May 14, 2019.

F6 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $60.41 to $61.33, inclusive.

F10 · ownership.nature: The reportable securities are held by the HMA GRAT.

SEC source: 0001666071-19-000189 · wf-form4_157714066272824.xml · nonDerivative · entry 5

Laube Lynne Marie · CIK 0001730687 · Director · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 18,565

F5 · kind: These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the trustees of the 2013 Lynne Marie Laube GRAT fbo Keegan George Allbright (the "KGA GRAT") on May 14, 2019.

F8 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $61.47 to $61.48, inclusive.

F7 · ownership.nature: The reportable securities are held by the KGA GRAT.

SEC source: 0001666071-19-000189 · wf-form4_157714066272824.xml · nonDerivative · entry 4

Laube Lynne Marie · CIK 0001730687 · Director · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 18,617

F5 · kind: These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the trustees of the 2013 Lynne Marie Laube GRAT fbo Keegan George Allbright (the "KGA GRAT") on May 14, 2019.

F6 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $60.41 to $61.33, inclusive.

F7 · ownership.nature: The reportable securities are held by the KGA GRAT.

SEC source: 0001666071-19-000188 · wf-form4_157714064174256.xml · nonDerivative · entry 1

Grimes Scott D. · CIK 0001617486 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 143,112

F1 · kind: These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the trustees of the 2013 Scott Grimes GRAT UAD (the "GRAT") on November 15, 2019.

F2 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $60.66 to $61.47, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4.

F3 · ownership.nature: The reportable securities are held by the GRAT.

SEC source: 0001666071-19-000189 · wf-form4_157714066272824.xml · nonDerivative · entry 3

Laube Lynne Marie · CIK 0001730687 · Director · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 341,267

F1 · kind: These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 5, 2018, as amended May 14, 2019.

F4 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $61.18 to $61.42, inclusive.

SEC source: 0001666071-19-000189 · wf-form4_157714066272824.xml · nonDerivative · entry 2

Laube Lynne Marie · CIK 0001730687 · Director · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 342,257

F1 · kind: These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 5, 2018, as amended May 14, 2019.

F3 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $60.12 to $61.10, inclusive.

SEC source: 0001666071-19-000189 · wf-form4_157714066272824.xml · nonDerivative · entry 1

Laube Lynne Marie · CIK 0001730687 · Director · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 346,107

F1 · kind: These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 5, 2018, as amended May 14, 2019.

F2 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $58.975 to $59.80, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2), (3), (4), (6) and (8) to this Form 4.

SEC source: 0001666071-19-000183 · wf-form4_157670410064066.xml · nonDerivative · entry 6

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 82,893

F1 · price: Shares transferred by the Reporting Person as a bona fide gift without consideration.

SEC source: 0001666071-19-000183 · wf-form4_157670410064066.xml · nonDerivative · entry 5

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 83,093

F1 · price: Shares transferred by the Reporting Person as a bona fide gift without consideration.

SEC source: 0000899243-19-029658 · doc4.xml · nonDerivative · entry 6

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,010

F6 · kind: Represents a gift to a charitable organization.

SEC source: 0000899243-19-029658 · doc4.xml · nonDerivative · entry 5

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,110

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $58.05 to $59.16, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (5) to this Form 4.

SEC source: 0001666071-19-000181 · wf-form4_157653156760441.xml · nonDerivative · entry 1

Evans David Thomas · CIK 0001730451 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,236

F1 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 23, 2019.

SEC source: 0000899243-19-029317 · doc4.xml · nonDerivative · entry 8

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,610

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $58.48 to $59.03, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (9) to this Form 4.

SEC source: 0000899243-19-029317 · doc4.xml · nonDerivative · entry 7

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,806

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.38 to $58.21, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (8) to this Form 4.

SEC source: 0001666071-19-000183 · wf-form4_157670410064066.xml · derivative · entry 9

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,500

Underlying: Common Stock · 10,000 shares

Expires 2027-07-07

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.

F4 · derivative.exercise_date: This option became exercisable with respect to one quarter (1/4) of the shares of stock subject to this option on April 1, 2018 (the "Initial Vesting Date"). The option becomes exercisable in respect of the remaining shares in thirty-six (36) equal monthly installments commencing one (1) month after the Initial Vesting Date, provided the Reporting Person continuously provides service to the Issuer through each vesting period.

SEC source: 0001666071-19-000183 · wf-form4_157670410064066.xml · derivative · entry 8

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,125

Underlying: Common Stock · 261 shares

Expires 2026-12-06

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.

F3 · derivative.exercise_date: This option became exercisable with respect to one quarter (1/4) of the shares of stock subject to this option on December 6, 2017 (the "Initial Vesting Date"). The option becomes exercisable in respect of the remaining shares in thirty-six (36) equal monthly installments commencing one (1) month after the Initial Vesting Date, provided the Reporting Person continuously provides service to the Issuer through each vesting period.

SEC source: 0001666071-19-000183 · wf-form4_157670410064066.xml · derivative · entry 7

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 777 shares

Expires 2024-08-01

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.

F2 · derivative.exercise_date: Fully vested.

SEC source: 0001666071-19-000183 · wf-form4_157670410064066.xml · nonDerivative · entry 4

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 83,293

SEC source: 0001666071-19-000183 · wf-form4_157670410064066.xml · nonDerivative · entry 3

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 94,331

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: 0001666071-19-000183 · wf-form4_157670410064066.xml · nonDerivative · entry 2

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,331

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: 0001666071-19-000183 · wf-form4_157670410064066.xml · nonDerivative · entry 1

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,070

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: 0000899243-19-029317 · doc4.xml · nonDerivative · entry 6

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,110

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.00 to $57.54, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (7) to this Form 4.

SEC source: 0000899243-19-029317 · doc4.xml · nonDerivative · entry 5

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,811

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.29 to $57.39, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (6) to this Form 4.

SEC source: 0000899243-19-028834 · doc4.xml · nonDerivative · entry 10

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,311

F10 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by PVM to its members.

SEC source: 0000899243-19-028834 · doc4.xml · nonDerivative · entry 9

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F10 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by PVM to its members.

F3 · ownership.nature: The reportable securities are owned directly by PVM V. The Reporting Person, a member of the Issuer's Board of Directors, is a member of PVM V. Each of Flint and McGuire are the managing members of PVM V. Each of Flint, McGuire and the Reporting Person, in their respective capacities with respect to PVM V, may be deemed to have shared voting and dispositive power over the shares held by PVP V. Each of PVM V, Flint, McGuire and the Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

SEC source: 0000899243-19-028834 · doc4.xml · nonDerivative · entry 8

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 258,889

F8 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Special Founders' Fund V, L.P. ("PVPSFF V"), to its general and limited partners.

F3 · ownership.nature: The reportable securities are owned directly by PVM V. The Reporting Person, a member of the Issuer's Board of Directors, is a member of PVM V. Each of Flint and McGuire are the managing members of PVM V. Each of Flint, McGuire and the Reporting Person, in their respective capacities with respect to PVM V, may be deemed to have shared voting and dispositive power over the shares held by PVP V. Each of PVM V, Flint, McGuire and the Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

SEC source: 0000899243-19-028834 · doc4.xml · nonDerivative · entry 7

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,955

F8 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Special Founders' Fund V, L.P. ("PVPSFF V"), to its general and limited partners.

F9 · ownership.nature: The reportable securities are owned directly by PVPSFF V. PVM V is the general partner of PVPSFF V. The Reporting Person, a member of the Issuer's Board of Directors, is a member of PVM V. Each of Flint and McGuire are the managing members of PVM V. Each of Flint, McGuire and the Reporting Person, in their respective capacities with respect to PVM V, may be deemed to have shared voting and dispositive power over the shares held by PVPSFF V. Each of PVM V, Flint, McGuire and the Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

SEC source: 0000899243-19-028834 · doc4.xml · nonDerivative · entry 6

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 258,791

F6 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Founders' Fund V, L.P. ("PVPFF V"), to its general and limited partners.

F3 · ownership.nature: The reportable securities are owned directly by PVM V. The Reporting Person, a member of the Issuer's Board of Directors, is a member of PVM V. Each of Flint and McGuire are the managing members of PVM V. Each of Flint, McGuire and the Reporting Person, in their respective capacities with respect to PVM V, may be deemed to have shared voting and dispositive power over the shares held by PVP V. Each of PVM V, Flint, McGuire and the Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

SEC source: 0000899243-19-028834 · doc4.xml · nonDerivative · entry 5

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,318

F6 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Founders' Fund V, L.P. ("PVPFF V"), to its general and limited partners.

F7 · ownership.nature: The reportable securities are owned directly by PVPFF V. PVM V is the general partner of PVPFF V. The Reporting Person, a member of the Issuer's Board of Directors, is a member of PVM V. Each of Flint and McGuire are the managing members of PVM V. Each of Flint, McGuire and the Reporting Person, in their respective capacities with respect to PVM V, may be deemed to have shared voting and dispositive power over the shares held by PVPFF V. Each of PVM V, Flint, McGuire and the Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

SEC source: 0000899243-19-028834 · doc4.xml · nonDerivative · entry 4

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 258,723

F4 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Entrepreneurs' Fund V, L.P. ("PVPE V"), to its general and limited partners.

F3 · ownership.nature: The reportable securities are owned directly by PVM V. The Reporting Person, a member of the Issuer's Board of Directors, is a member of PVM V. Each of Flint and McGuire are the managing members of PVM V. Each of Flint, McGuire and the Reporting Person, in their respective capacities with respect to PVM V, may be deemed to have shared voting and dispositive power over the shares held by PVP V. Each of PVM V, Flint, McGuire and the Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

SEC source: 0000899243-19-028834 · doc4.xml · nonDerivative · entry 3

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,766

F4 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Entrepreneurs' Fund V, L.P. ("PVPE V"), to its general and limited partners.

F5 · ownership.nature: The reportable securities are owned directly by PVPE V. PVM V is the general partner of PVPE V. The Reporting Person, a member of the Issuer's Board of Directors, is a member of PVM V. Each of Flint and McGuire are the managing members of PVM V. Each of Flint, McGuire and the Reporting Person, in their respective capacities with respect to PVM V, may be deemed to have shared voting and dispositive power over the shares held by PVPE V. Each of PVM V, Flint, McGuire and the Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

SEC source: 0000899243-19-028834 · doc4.xml · nonDerivative · entry 2

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 253,780

F1 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners V, L.P. ("PVP V"), to its general and limited partners.

F3 · ownership.nature: The reportable securities are owned directly by PVM V. The Reporting Person, a member of the Issuer's Board of Directors, is a member of PVM V. Each of Flint and McGuire are the managing members of PVM V. Each of Flint, McGuire and the Reporting Person, in their respective capacities with respect to PVM V, may be deemed to have shared voting and dispositive power over the shares held by PVP V. Each of PVM V, Flint, McGuire and the Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

SEC source: 0000899243-19-028834 · doc4.xml · nonDerivative · entry 1

Youngren Bryce · CIK 0001489625 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 192,982

F1 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners V, L.P. ("PVP V"), to its general and limited partners.

F2 · ownership.nature: The reportable securities are owned directly by PVP V. Polaris Venture Management Co. V, L.L.C. ("PVM V") is the general partner of PVP V. The Reporting Person, a member of the Issuer's Board of Directors, is a member of PVM V. Each of Jonathan A. Flint ("Flint") and Terrance G. McGuire ("McGuire") are the managing members of PVM V. Each of Flint, McGuire and the Reporting Person, in their respective capacities with respect to PVM V, may be deemed to have shared voting and dispositive power over the shares held by PVP V. Each of PVM V, Flint, McGuire and the Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

SEC source: 0001666071-19-000178 · wf-form4_157555395506220.xml · nonDerivative · entry 4

Evans David Thomas · CIK 0001730451 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,236

F2 · kind: These transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 23, 2019.

SEC source: 0001666071-19-000179 · wf-form4_157555405763818.xml · derivative · entry 5

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,500

Underlying: Common Stock · 15,000 shares

Expires 2027-07-07

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.

F2 · derivative.exercise_date: This option became exercisable with respect to one quarter (1/4) of the shares of stock subject to this option on April 1, 2018 (the "Initial Vesting Date"). The option becomes exercisable in respect of the remaining shares in thirty-six (36) equal monthly installments commencing one (1) month after the Initial Vesting Date, provided the Reporting Person continuously provides service to the Issuer through each vesting period.

SEC source: 0001666071-19-000179 · wf-form4_157555405763818.xml · derivative · entry 4

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 777

Underlying: Common Stock · 25,231 shares

Expires 2024-08-01

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: Fully vested.

SEC source: 0001666071-19-000179 · wf-form4_157555405763818.xml · nonDerivative · entry 3

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 83,293

SEC source: 0001666071-19-000179 · wf-form4_157555405763818.xml · nonDerivative · entry 2

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 98,293

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: 0001666071-19-000179 · wf-form4_157555405763818.xml · nonDerivative · entry 1

SOMERS KIRK · CIK 0001204015 · Chief Legal & Privacy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 83,293

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: 0001666071-19-000174 · wf-form4_157541518565090.xml · derivative · entry 5

Adams David Leslie · CIK 0001730500 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 23,750 shares

Expires 2026-06-15

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.

F4 · derivative.exercise_date: Fully vested.

SEC source: 0001666071-19-000174 · wf-form4_157541518565090.xml · nonDerivative · entry 4

Adams David Leslie · CIK 0001730500 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,020

F3 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $59.23 to $60, inclusive.

SEC source: 0001666071-19-000174 · wf-form4_157541518565090.xml · nonDerivative · entry 3

Adams David Leslie · CIK 0001730500 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,970

F2 · price: The price reported is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $58.22 to $59.20, inclusive.