Stout Jay S

SEC source: 0001702969-26-000012 · wk-form4_1791579957.xml · nonDerivative · entry 2

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 201,532

F3 · shares: On April 2, 2024, the holder was granted 54,978 RSUs, as previously reported on a Form 4 filed on April 4, 2024, of which 3,437 of these RSUs vested on October 2, 2026. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.58 - $32.30 per share, 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 this footnote to this Form 4.

SEC source: 0001702969-26-000012 · wk-form4_1791579957.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 203,128

F1 · shares: On April 1, 2025, the holder was granted 76,181 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 3, 2025, of which 4,761 of these RSUs vested on October 1, 2026. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.58 - $32.30 per share, 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 this footnote to this Form 4.

SEC source: 0001702969-26-000010 · wk-form4_1784930232.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 205,341

F1 · shares: On April 17, 2023, the holder was granted 100,000 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 19, 2023, of which 6,250 of these RSUs vested on July 17, 2026. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.18 - $39.05 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-26-000081 · wk-form4_1783714376.xml · nonDerivative · entry 4

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 208,198

F4 · shares: On April 2, 2024, the holder was granted 54,978 RSUs, as previously reported on a Form 4 filed on April 4, 2024, of which 3,436 of these RSUs vested on July 2, 2026. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $39.92 - $40.03 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-26-000081 · wk-form4_1783714376.xml · nonDerivative · entry 3

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 208,275

F4 · shares: On April 2, 2024, the holder was granted 54,978 RSUs, as previously reported on a Form 4 filed on April 4, 2024, of which 3,436 of these RSUs vested on July 2, 2026. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.91 - $39.89 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-26-000081 · wk-form4_1783714376.xml · nonDerivative · entry 2

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 209,674

F1 · shares: On April 1, 2025, the holder was granted 76,181 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 3, 2025, of which 4,761 of these RSUs vested on July 1, 2026. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $39.92 - $40.03 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-26-000081 · wk-form4_1783714376.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 209,779

F1 · shares: On April 1, 2025, the holder was granted 76,181 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 3, 2025, of which 4,761 of these RSUs vested on July 1, 2026. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.91 - $39.89 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-26-000074 · wk-form4_1782517552.xml · nonDerivative · entry 2

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211,685

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.76 - $39.13 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-26-000074 · wk-form4_1782517552.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 218,408

F1 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.74 - $38.56 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-26-000055 · wk-form4_1777061153.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 251,685

F1 · shares: On April 17, 2023, the holder was granted 100,000 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 19, 2023, of which 6,250 of these RSUs vested on April 17, 2026. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $29.23 - $30.00 per share, 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 this footnote to this Form 4.

SEC source: 0001702969-26-000006 · wk-form4_1775851354.xml · nonDerivative · entry 2

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 254,439

F3 · shares: On April 2, 2024, the holder was granted 54,978 RSUs, as previously reported on a Form 4 filed on April 4, 2024, of which 3,436 of these RSUs vested on April 2, 2026. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.54 - $25.39 per share, 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 this footnote to this Form 4.

SEC source: 0001702969-26-000006 · wk-form4_1775851354.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 255,957

F1 · shares: On April 1, 2025, the holder was granted 76,181 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 3, 2025, of which 19,045 of these RSUs vested on April 1, 2026. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.54 - $25.39 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-26-000038 · wk-form4_1775765943.xml · derivative · entry 2

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,851

Underlying: Common Stock · 96,851 shares

Expires 2036-04-07

F2 · derivative.exercise_date: These options were granted pursuant to the Plan. The shares underlying the options will vest as to 25% of the total shares on April 1, 2027 and the balance will vest in thirty-six (36) successive substantially equal monthly installments thereafter, subject to the Reporting Person's continuous service to the Issuer as of such date.

SEC source: 0001764013-26-000038 · wk-form4_1775765943.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 264,571

F1 · shares: These restricted stock units ("RSUs") were granted pursuant to the Issuer's 2019 Equity Incentive Plan (the "Plan"). Each RSU represents a contingent right to receive one share of common stock upon the vesting of the unit. The RSUs will vest as to 25% of the total shares on April 1, 2027 and the balance will vest in twelve (12) successive substantially equal quarterly installments thereafter, subject to the Reporting Person's continuous service to the Issuer as of such date.

SEC source: 0001702969-26-000002 · wk-form4_1769203286.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 197,634

F1 · shares: On April 17, 2023, the holder was granted 100,000 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 19, 2023, of which 6,250 of these RSUs vested on January 17, 2026. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

SEC source: 0001764013-26-000002 · wk-form4_1767992586.xml · nonDerivative · entry 2

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 199,611

F1 · shares: On April 2, 2024, the holder was granted 54,978 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 4, 2024, of which 3,436 of these RSUs vested on January 2, 2026. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.91 - $26.94 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-26-000002 · wk-form4_1767992586.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 199,666

F1 · shares: On April 2, 2024, the holder was granted 54,978 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 4, 2024, of which 3,436 of these RSUs vested on January 2, 2026. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.90 - $26.89 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-25-000143 · wk-form4_1761338213.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,814

F1 · shares: On April 17, 2023, the holder was granted 100,000 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 19, 2023, of which 6,250 of these RSUs vested on October 17, 2025. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.03 - $19.23 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-25-000138 · wk-form4_1760126514.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 203,334

F1 · shares: On April 2, 2024, the holder was granted 54,978 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 4, 2024, of which 3,436 of these RSUs vested on October 2, 2025. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.06 - $16.48 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-25-000115 · wk-form4_1753477896.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 204,919

F1 · shares: On April 17, 2023, the holder was granted 100,000 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 19, 2023, of which 6,250 of these RSUs vested on July 17, 2025. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

SEC source: 0001764013-25-000108 · wk-form4_1752264819.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 207,724

F1 · shares: On April 2, 2024, the holder was granted 54,978 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 4, 2024, of which 3,436 of these RSUs vested on July 2, 2025. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.00 - $17.50 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-25-000083 · wk-form4_1745612230.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 209,243

F1 · shares: On April 17, 2023, the holder was granted 100,000 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 19, 2023, of which 6,250 of these RSUs vested on April 17, 2025. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

SEC source: 0001764013-25-000069 · wk-form4_1744402102.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211,168

F1 · shares: On April 2, 2024, the holder was granted 54,978 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 4, 2024, of which 13,744 of these RSUs vested on April 2, 2025. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.75 - $13.26 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-25-000055 · wk-form4_1743713507.xml · derivative · entry 2

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 107,297

Underlying: Common Stock · 107,297 shares

Expires 2035-04-01

F2 · derivative.exercise_date: The shares underlying the options will vest as to 25% of the shares on April 1, 2026 and the remainder will vest in 36 substantially equal monthly installments over three years thereafter, subject to the Reporting Person's continuous service to the Issuer as of such date.

SEC source: 0001764013-25-000055 · wk-form4_1743713507.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 216,172

F1 · shares: These restricted stock units ("RSUs") were granted pursuant to the Issuer's 2019 Equity Incentive Plan. Each RSU represents a contingent right to receive one share of common stock upon the vesting of the unit. The RSUs will vest as to 25% of the units on April 1, 2026, and the remainder will vest in substantially equal installments on a quarterly basis over three years thereafter, subject to the Reporting Person's continuous service to the Issuer as of such date.

SEC source: 0001764013-25-000019 · wk-form4_1737753791.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 139,991

F1 · shares: On April 17, 2023, the holder was granted 100,000 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 19, 2023, of which 6,250 of these RSUs vested on January 17, 2025. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

SEC source: 0001764013-24-000178 · wk-form4_1729887693.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 142,186

F1 · shares: On April 17, 2023, the holder was granted 100,000 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 19, 2023, of which 6,250 of these RSUs vested on October 17, 2024. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $29.38 - $29.68 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-24-000143 · wk-form4_1722025247.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 144,926

F1 · shares: On April 17, 2023, the holder was granted 100,000 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 19, 2023, of which 6,250 of these RSUs vested on July 17, 2024. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.37 - $28.06 per share, 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 this footnote to this Form 4.

SEC source: 0001764013-24-000087 · wk-form4_1714166431.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 147,739

F1 · shares: On April 17, 2023, the holder was granted 100,000 restricted stock units ("RSUs"), as previously reported on a Form 4 filed on April 19, 2023, of which 25,000 of these RSUs vested on April 17, 2024. The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of these RSUs. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person.

SEC source: 0001764013-24-000057 · wk-form4_1712263135.xml · derivative · entry 2

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,723

Underlying: Common Stock · 68,723 shares

Expires 2034-04-02

F2 · derivative.exercise_date: The shares underlying the options will vest as to 25% of the shares on April 2, 2025 and the remainder will vest in 36 substantially equal monthly installments over three years thereafter, subject to the Reporting Person's continuous service to the Issuer as of such date.

SEC source: 0001764013-24-000057 · wk-form4_1712263135.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 154,978

F1 · shares: These restricted stock units ("RSUs") were granted pursuant to the Issuer's 2019 Equity Incentive Plan. Each RSU represents a contingent right to receive one share of common stock upon the vesting of the unit. The RSUs will vest as to 25% of the units on April 2, 2025, and the remainder will vest in substantially equal installments on a quarterly basis over three years thereafter, subject to the Reporting Person's continuous service to the Issuer as of such date.

SEC source: 0001764013-23-000057 · wf-form4_168193578398335.xml · derivative · entry 2

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,000

Underlying: Common Stock · 150,000 shares

Expires 2033-04-17

F3 · derivative.exercise_date: Shares underlying the options vest over four years, with 25% of the shares underlying the options vesting on April 17, 2024 and the remainder of the shares underlying the options vesting in 12 equal quarterly installments thereafter, subject to the Reporting Person providing continuous service to the Issuer as of each such date.

SEC source: 0001764013-23-000057 · wf-form4_168193578398335.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,000

F1 · security: Represents the number of shares underlying restricted stock units awards ("RSUs").

F2 · shares: The RSUs vest over four years, with 25% of the RSUs vesting on April 17, 2024 and the remainder of the RSUs vesting in 12 equal quarterly installments thereafter, subject to the Reporting Person providing continuous service to the Issuer as of each such date.

SEC source: 0001209191-18-026137 · doc4.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · SVP, Technical Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 185,646

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of certain RSUs, previously reported in Table I following the date of grant.

SEC source: 0001209191-17-067107 · doc4.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · SVP, Technical Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 190,500

F1 · shares: Represents the grant of Restricted Stock Units that vest as follows: 25% of the shares vest on each of December 20, 2018, December 20, 2019, December 20, 2020 and December 20,2021.

SEC source: 0001209191-17-056567 · doc4.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · SVP, Technical Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 116,000

F1 · shares: Represents the grant of Restricted Stock Units that vest as follows: 50% of the shares vest on each of October 6, 2018 and October 6, 2019.

SEC source: 0001209191-17-025827 · doc4.xml · derivative · entry 2

Stout Jay S · CIK 0001702969 · SVP, Technical Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,000

Underlying: Common Stock · 75,000 shares

Expires 2027-04-02

F2 · derivative.exercise_date: 25% of the shares subject to the option become exercisable on April 3, 2018 and 1/48 of the shares subject to the option become exercisable monthly thereafter

SEC source: 0001209191-17-025827 · doc4.xml · nonDerivative · entry 1

Stout Jay S · CIK 0001702969 · SVP, Technical Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,000

F1 · shares: Represents the grant of Restricted Stock Units that vest as follows: 25% of the shares subject to the Restricted Stock Units vest on each of April 3, 2018, April 3, 2019, April 3, 2020 and April 3, 2021.