P

SEC source: 0000899243-18-008247 · doc4.xml · nonDerivative · entry 2

Greylock XIII GP LLC · CIK 0001541539 · Former 10% Owner

Greylock XIII Limited Partnership · CIK 0001474746 · Former 10% Owner

Greylock XIII-A Limited Partnership · CIK 0001474747 · Former 10% Owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Greylock XIII-A Limited Partnership

Disclosed balance after: 667,597

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 · balance_after: Represents 667,597 shares converted from Class B Common Stock to Class A Common Stock by Greylock XIII-A Limited Partnership ("Greylock XIII-A LP").

F4 · ownership.nature: The shares are held directly by Greylock XIII-A LP. Greylock XIII GP is the sole General Partner of Greylock XIII-A LP and may be deemed to share voting and dispositive power with respect to the shares held by Greylock XIII-A LP. Greylock XIII GP disclaims beneficial ownership of the securities held by Greylock XIII LP except to the extent of any pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission by Greylock XIII GP of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-18-008247 · doc4.xml · nonDerivative · entry 1

Greylock XIII GP LLC · CIK 0001541539 · Former 10% Owner

Greylock XIII Limited Partnership · CIK 0001474746 · Former 10% Owner

Greylock XIII-A Limited Partnership · CIK 0001474747 · Former 10% Owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Greylock XIII Limited Partnership

Disclosed balance after: 7,415,283

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 · shares: Represents 7,415,283 shares converted from Class B Common Stock to Class A Common Stock by Greylock XIII Limited Partnership ("Greylock XIII LP").

F1 · balance_after: Represents 7,415,283 shares converted from Class B Common Stock to Class A Common Stock by Greylock XIII Limited Partnership ("Greylock XIII LP").

F2 · ownership.nature: The shares are held directly by Greylock XIII LP. Greylock XIII GP Limited Liability Company ("Greylock XIII GP") is the sole General Partner of Greylock XIII LP and may be deemed to share voting and dispositive power with respect to the shares held by Greylock XIII LP. Greylock XIII GP disclaims beneficial ownership of the securities held by Greylock XIII LP except to the extent of any pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission by Greylock XIII GP of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0001209191-18-020338 · doc4.xml · derivative · entry 6

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 7,500 shares

Expires not disclosed

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_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F3 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F4 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F4 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

SEC source: 0001209191-18-020338 · doc4.xml · derivative · entry 5

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,500

Underlying: Class A Common Stock · 7,500 shares

Expires not disclosed

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_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F3 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F4 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F4 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

SEC source: 0001209191-18-020338 · doc4.xml · derivative · entry 4

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 947,500

Underlying: Class B Common Stock · 7,500 shares

Expires 2024-10-07

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.

F3 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F6 · derivative.exercise_date: 1/4 of the Option vests one year from 8/26/2014, 1/48 of the Option vests monthly thereafter over the following three years. The option shall be subject to accelerated vesting as set forth in optionee's employment agreement with the Issuer.

SEC source: 0001209191-18-020338 · doc4.xml · nonDerivative · entry 3

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 513,540

F3 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F5 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.89 to $21.30 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.

SEC source: 0001209191-18-020338 · doc4.xml · nonDerivative · entry 2

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 524,040

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 · kind: Each share of Class A Common Stock was issued upon conversion of one share of Class B Common Stock at the election of the Reporting Person.

F3 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F4 · price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

SEC source: 0001209191-18-020338 · doc4.xml · nonDerivative · entry 1

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 516,540

F1 · shares: The shares of Class A Common Stock are subject to a Performance-Based Restricted Stock Award granted to the Reporting Person and are reported at the target award amount. The Reporting Person may potentially earn from 0% to 180% of the target amount based on the achievement, if any, of the performance criteria through the end of the performance period. The actual shares earned will be determined upon certification by the Issuer's Compensation Committee. If earned, 1/3rd of the total earned shares would vest on March 20, 2019, and 1/12th of the total earned shares would vest on each of June 20, September 20, December 20 and March 20, over the following two years, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.

SEC source: 0001209191-18-020337 · doc4.xml · nonDerivative · entry 1

Hatfield David · CIK 0001395529 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 381,490

F1 · shares: The shares of Class A Common Stock are subject to a Performance-Based Restricted Stock Award granted to the Reporting Person and are reported at the target award amount. The Reporting Person may potentially earn from 0% to 180% of the target amount based on the achievement, if any, of the performance criteria through the end of the performance period. The actual shares earned will be determined upon certification by the Issuer's Compensation Committee. If earned, 1/3rd of the total earned shares would vest on March 20, 2019, and 1/12th of the total earned shares would vest on each of June 20, September 20, December 20 and March 20, over the following two years, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.

SEC source: 0001209191-18-020332 · doc4.xml · nonDerivative · entry 1

Colgrove John · CIK 0001651902 · Director · Chief Technology Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 252,171

F1 · shares: The shares of Class A Common Stock are subject to a Performance-Based Restricted Stock Award granted to the Reporting Person and are reported at the target award amount. The Reporting Person may potentially earn from 0% to 180% of the target amount based on the achievement, if any, of the performance criteria through the end of the performance period. The actual shares earned will be determined upon certification by the Issuer's Compensation Committee. If earned, 1/3rd of the total earned shares would vest on March 20, 2019, and 1/12th of the total earned shares would vest on each of June 20, September 20, December 20 and March 20, over the following two years, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.

SEC source: 0001209191-18-020336 · doc4.xml · nonDerivative · entry 2

Giancarlo Charles H · CIK 0001299634 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,276,542

F2 · shares: The shares of Class A Common Stock are subject to a PRSA granted to the Reporting Person and are reported at the target award amount. The Reporting Person may potentially earn from 0% to 180% of the target amount based on the achievement, if any, of the performance criteria through the end of the performance period. The actual shares earned will be determined upon certification by the Issuer's Compensation Committee. If earned, 1/3rd of the total earned shares would vest on March 20, 2019, and 1/12th of the total earned shares would vest on each of June 20, September 20, December 20 and March 20, over the following two years, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.

SEC source: 0001209191-18-020336 · doc4.xml · nonDerivative · entry 1

Giancarlo Charles H · CIK 0001299634 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 929,489

F1 · shares: The shares of Class A Common Stock are subject to a Performance-Based Restricted Stock Award ("PRSA") granted to the Reporting Person and are reported at the target award amount. The Reporting Person may potentially earn from 0% to 150% of the target amount based on the achievement, if any, of the performance criteria through the end of the performance period. The actual shares earned will be determined upon certification by the Issuer's Compensation Committee. If earned, 1/3rd of the total earned shares would vest on December 20, 2018 (and be released on March 20, 2019), and 1/12th of the total earned shares would vest on each of March 20, June 20, September 20 and December 20, over the following two years, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.

SEC source: 0001209191-19-014787 · doc4a.xml · derivative · entry 6

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 7,500 shares

Expires not disclosed

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.

F5 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F4 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F5 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F5 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

SEC source: 0001209191-19-014787 · doc4a.xml · derivative · entry 5

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,500

Underlying: Class A Common Stock · 7,500 shares

Expires not disclosed

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.

F5 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F4 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F5 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F5 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

SEC source: 0001209191-19-014787 · doc4a.xml · derivative · entry 4

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 947,500

Underlying: Class B Common Stock · 7,500 shares

Expires 2024-10-07

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 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F7 · derivative.exercise_date: 1/4 of the Option vests one year from 8/26/2014, 1/48 of the Option vests monthly thereafter over the following three years. The option shall be subject to accelerated vesting as set forth in optionee's employment agreement with the Issuer.

SEC source: 0001209191-19-014787 · doc4a.xml · nonDerivative · entry 3

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 525,701

F6 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.89 to $21.30 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.

SEC source: 0001209191-19-014787 · doc4a.xml · nonDerivative · entry 2

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 536,201

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 · kind: Each share of Class A Common Stock was issued upon conversion of one share of Class B Common Stock at the election of the Reporting Person.

F4 · kind: This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F5 · price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

SEC source: 0001209191-19-014787 · doc4a.xml · nonDerivative · entry 1

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 528,701

F1 · shares: See remarks below.

F2 · shares: Represents shares of Class A Common Stock earned pursuant to a Performance-Based Restricted Stock Award ("PRSA"). The Issuer's Compensation Committee determined achievement of the performance criteria and certified the total number of shares earned under the PRSA on February 26, 2019 (the "Earned Shares"). 1/3rd of the Earned Shares subject to this PRSA will vest on March 20, 2019, and 1/12th of the Earned Shares will vest on each of June 20, September 20, December 20 and March 20, over the following two years, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.

SEC source: 0001209191-19-014786 · doc4a.xml · nonDerivative · entry 1

Hatfield David · CIK 0001395529 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 368,340

F1 · shares: See remarks below.

F2 · shares: Represents shares of Class A Common Stock earned pursuant to a Performance-Based Restricted Stock Award ("PRSA"). The Issuer's Compensation Committee determined achievement of the performance criteria and certified the total number of shares earned under the PRSA on February 26, 2019 (the "Earned Shares"). 1/3rd of the Earned Shares subject to this PRSA will vest on March 20, 2019, and 1/12th of the Earned Shares will vest on each of June 20, September 20, December 20 and March 20, over the following two years, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.

F3 · balance_after: This amount reflects the correction with respect to the Amount of Securities Beneficially Owned (Directly and Indirectly) Following the Reported Transaction(s) described in the Form 4/A filed by the Reporting Person on January 11, 2019.

SEC source: 0001209191-19-014785 · doc4a.xml · nonDerivative · entry 2

Giancarlo Charles H · CIK 0001299634 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,325,917

F1 · shares: See remarks below.

F3 · shares: Represents shares of Class A Common Stock earned pursuant to a PRSA. The Issuer's Compensation Committee determined achievement of the performance criteria and certified the number of Earned Shares on February 26, 2019. 1/3rd of the Earned Shares subject to this PRSA will vest on March 20, 2019, and 1/12th of the Earned Shares will vest on each of June 20, September 20, December 20 and March 20, over the following two years, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.

SEC source: 0001209191-19-014785 · doc4a.xml · nonDerivative · entry 1

Giancarlo Charles H · CIK 0001299634 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 951,100

F1 · shares: See remarks below.

F2 · shares: Represents shares of Class A Common Stock earned pursuant to a Performance-Based Restricted Stock Award ("PRSA"). The Issuer's Compensation Committee determined achievement of the performance criteria and certified the total number of shares earned under the PRSA on February 26, 2019 (the "Earned Shares"). 5/12th of the Earned Shares subject to this PRSA will be released on March 20, 2019, and 1/12th of the Earned Shares will vest on each of June 20, September 20, December 20, and March 20, over the following one and 3/4 years, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.

SEC source: 0001209191-19-014784 · doc4a.xml · nonDerivative · entry 1

Colgrove John · CIK 0001651902 · Director · Chief Technology Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 263,396

F1 · shares: See remarks below.

F2 · shares: Represents shares of Class A Common Stock earned pursuant to a Performance-Based Restricted Stock Award ("PRSA"). The Issuer's Compensation Committee determined achievement of the performance criteria and certified the total number of shares earned under the PRSA on February 26, 2019 (the "Earned Shares"). 1/3rd of the Earned Shares subject to this PRSA will vest on March 20, 2019, and 1/12th of the Earned Shares will vest on each of June 20, September 20, December 20 and March 20, over the following two years, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.

SEC source: 0001209191-18-018563 · doc4.xml · derivative · entry 5

Dietzen Scott · CIK 0001651908 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 900,000

Underlying: Class A Common Stock · 500,000 shares

Expires not disclosed

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_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F2 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F2 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F3 · ownership.nature: Shares are held by JP Morgan Trust Company of Delaware, as Trustee of the Dietzen Family Irrevocable Trust GST Exempt Trust under agreement dated March 25, 2014.

SEC source: 0001209191-18-018563 · doc4.xml · nonDerivative · entry 4

Dietzen Scott · CIK 0001651908 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F4 · kind: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F4 · shares: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F4 · price: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F3 · ownership.nature: Shares are held by JP Morgan Trust Company of Delaware, as Trustee of the Dietzen Family Irrevocable Trust GST Exempt Trust under agreement dated March 25, 2014.

SEC source: 0001209191-18-018563 · doc4.xml · nonDerivative · entry 3

Dietzen Scott · CIK 0001651908 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 200,000

F4 · kind: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F4 · shares: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F4 · price: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F3 · ownership.nature: Shares are held by JP Morgan Trust Company of Delaware, as Trustee of the Dietzen Family Irrevocable Trust GST Exempt Trust under agreement dated March 25, 2014.

SEC source: 0001209191-18-018563 · doc4.xml · nonDerivative · entry 2

Dietzen Scott · CIK 0001651908 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 500,000

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 · kind: Each share of Class A Common Stock was issued upon conversion of one share of Class B Common Stock at the election of the Reporting Person.

F2 · price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F3 · ownership.nature: Shares are held by JP Morgan Trust Company of Delaware, as Trustee of the Dietzen Family Irrevocable Trust GST Exempt Trust under agreement dated March 25, 2014.

SEC source: 0001209191-18-021421 · doc4a.xml · derivative · entry 5

Dietzen Scott · CIK 0001651908 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 900,000

Underlying: Class A Common Stock · 500,000 shares

Expires not disclosed

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_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F2 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F2 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F3 · ownership.nature: Shares are held by JP Morgan Trust Company of Delaware, as Trustee of the Dietzen Family Irrevocable Trust GST Exempt Trust under agreement dated March 25, 2014.

SEC source: 0001209191-18-021421 · doc4a.xml · nonDerivative · entry 4

Dietzen Scott · CIK 0001651908 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F4 · kind: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F4 · shares: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F4 · price: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F3 · ownership.nature: Shares are held by JP Morgan Trust Company of Delaware, as Trustee of the Dietzen Family Irrevocable Trust GST Exempt Trust under agreement dated March 25, 2014.

SEC source: 0001209191-18-021421 · doc4a.xml · nonDerivative · entry 3

Dietzen Scott · CIK 0001651908 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 200,000

F4 · kind: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F4 · shares: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F5 · shares: Represents final number of shares accepted by this exchange fund on March 22, 2018.

F4 · price: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F6 · price: Represents value per share of shares accepted by this exchange fund on March 22, 2018.

F3 · ownership.nature: Shares are held by JP Morgan Trust Company of Delaware, as Trustee of the Dietzen Family Irrevocable Trust GST Exempt Trust under agreement dated March 25, 2014.

SEC source: 0001209191-18-021421 · doc4a.xml · nonDerivative · entry 2

Dietzen Scott · CIK 0001651908 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 500,000

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 · kind: Each share of Class A Common Stock was issued upon conversion of one share of Class B Common Stock at the election of the Reporting Person.

F2 · price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F3 · ownership.nature: Shares are held by JP Morgan Trust Company of Delaware, as Trustee of the Dietzen Family Irrevocable Trust GST Exempt Trust under agreement dated March 25, 2014.

SEC source: 0001209191-18-031518 · doc4a.xml · derivative · entry 5

Dietzen Scott · CIK 0001651908 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 900,000

Underlying: Class A Common Stock · 500,000 shares

Expires not disclosed

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_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F2 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F2 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F3 · ownership.nature: Shares are held by JP Morgan Trust Company of Delaware, as Trustee of the Dietzen Family Irrevocable Trust GST Exempt Trust under agreement dated March 25, 2014.

SEC source: 0001209191-18-031518 · doc4a.xml · nonDerivative · entry 4

Dietzen Scott · CIK 0001651908 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 0

F4 · kind: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F4 · shares: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F7 · shares: Represents final number of shares accepted by this exchange fund on May 17, 2018.

F4 · price: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F8 · price: Represents value per share of shares accepted by this exchange fund on May 17, 2018.

F3 · ownership.nature: Shares are held by JP Morgan Trust Company of Delaware, as Trustee of the Dietzen Family Irrevocable Trust GST Exempt Trust under agreement dated March 25, 2014.

SEC source: 0001209191-18-031518 · doc4a.xml · nonDerivative · entry 3

Dietzen Scott · CIK 0001651908 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 200,000

F4 · kind: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F4 · shares: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F5 · shares: Represents final number of shares accepted by this exchange fund on March 22, 2018.

F4 · price: The Reporting Person made an irrevocable contribution of Class A Common Stock to two exchange funds in exchange for shares of each exchange fund. Upon the closing of an exchange fund, some or all of the shares of Class A Common Stock will be accepted by that exchange fund, with any remaining shares of Class A Common Stock being returned to the Reporting Person. The Class A Common Stock will be valued at the closing price of Class A Common Stock at such time as the shares are accepted by an exchange fund. Upon closing of an exchange fund, the Reporting Person will amend this Form 4 to reflect the final number of shares accepted by that exchange fund and the value of such shares.

F6 · price: Represents value per share of shares accepted by this exchange fund on March 22, 2018.

F3 · ownership.nature: Shares are held by JP Morgan Trust Company of Delaware, as Trustee of the Dietzen Family Irrevocable Trust GST Exempt Trust under agreement dated March 25, 2014.

SEC source: 0001209191-18-031518 · doc4a.xml · nonDerivative · entry 2

Dietzen Scott · CIK 0001651908 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 500,000

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 · kind: Each share of Class A Common Stock was issued upon conversion of one share of Class B Common Stock at the election of the Reporting Person.

F2 · price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F3 · ownership.nature: Shares are held by JP Morgan Trust Company of Delaware, as Trustee of the Dietzen Family Irrevocable Trust GST Exempt Trust under agreement dated March 25, 2014.

SEC source: 0000899243-18-006466 · doc4.xml · derivative · entry 6

Greylock XIII GP LLC · CIK 0001541539 · 10% owner

Greylock XIII Limited Partnership · CIK 0001474746 · 10% owner

Greylock XIII-A Limited Partnership · CIK 0001474747 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Greylock XIII-A Limited Partnership

Disclosed balance after: 1,221,730

Underlying: Class A Common Stock · 553,656 shares

Expires not disclosed

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.

F7 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F4 · shares: The shares are held directly by Greylock XIII-A LP. Greylock XIII GP is the sole General Partner of Greylock XIII-A LP and may be deemed to share voting and dispositive power with respect to the shares held by Greylock XIII-A LP. Greylock XIII GP disclaims beneficial ownership of the securities held by Greylock XIII LP except to the extent of any pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission by Greylock XIII GP of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

F7 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F7 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F1 · derivative.underlying_shares: Represents 6,149,694 shares converted from Class B Common Stock to Class A Common Stock by Greylock XIII Limited Partnership ("Greylock XIII LP").

F4 · ownership.nature: The shares are held directly by Greylock XIII-A LP. Greylock XIII GP is the sole General Partner of Greylock XIII-A LP and may be deemed to share voting and dispositive power with respect to the shares held by Greylock XIII-A LP. Greylock XIII GP disclaims beneficial ownership of the securities held by Greylock XIII LP except to the extent of any pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission by Greylock XIII GP of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-18-006466 · doc4.xml · derivative · entry 5

Greylock XIII GP LLC · CIK 0001541539 · 10% owner

Greylock XIII Limited Partnership · CIK 0001474746 · 10% owner

Greylock XIII-A Limited Partnership · CIK 0001474747 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Greylock XIII Limited Partnership

Disclosed balance after: 13,570,305

Underlying: Class A Common Stock · 6,149,694 shares

Expires not disclosed

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.

F7 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F1 · shares: Represents 6,149,694 shares converted from Class B Common Stock to Class A Common Stock by Greylock XIII Limited Partnership ("Greylock XIII LP").

F7 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F7 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F1 · derivative.underlying_shares: Represents 6,149,694 shares converted from Class B Common Stock to Class A Common Stock by Greylock XIII Limited Partnership ("Greylock XIII LP").

F2 · ownership.nature: The shares are held directly by Greylock XIII LP. Greylock XIII GP Limited Liability Company ("Greylock XIII GP") is the sole General Partner of Greylock XIII LP and may be deemed to share voting and dispositive power with respect to the shares held by Greylock XIII LP. Greylock XIII GP disclaims beneficial ownership of the securities held by Greylock XIII LP except to the extent of any pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission by Greylock XIII GP of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-18-006466 · doc4.xml · nonDerivative · entry 4

Greylock XIII GP LLC · CIK 0001541539 · 10% owner

Greylock XIII Limited Partnership · CIK 0001474746 · 10% owner

Greylock XIII-A Limited Partnership · CIK 0001474747 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

F6 · kind: Represents a pro-rata, in-kind distribution by Greylock XIII-A LP and its affiliated funds and associated persons, without additional consideration, to their respective partners, members and assigns. Such distribution was made in accordance with the exemption afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F6 · ownership.nature: Represents a pro-rata, in-kind distribution by Greylock XIII-A LP and its affiliated funds and associated persons, without additional consideration, to their respective partners, members and assigns. Such distribution was made in accordance with the exemption afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

SEC source: 0000899243-18-006466 · doc4.xml · nonDerivative · entry 3

Greylock XIII GP LLC · CIK 0001541539 · 10% owner

Greylock XIII Limited Partnership · CIK 0001474746 · 10% owner

Greylock XIII-A Limited Partnership · CIK 0001474747 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

F5 · kind: Represents a pro-rata, in-kind distribution by Greylock XIII LP and its affiliated funds and associated persons, without additional consideration, to their respective partners, members and assigns. Such distribution was made in accordance with the exemption afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

F5 · ownership.nature: Represents a pro-rata, in-kind distribution by Greylock XIII LP and its affiliated funds and associated persons, without additional consideration, to their respective partners, members and assigns. Such distribution was made in accordance with the exemption afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

SEC source: 0000899243-18-006466 · doc4.xml · nonDerivative · entry 2

Greylock XIII GP LLC · CIK 0001541539 · 10% owner

Greylock XIII Limited Partnership · CIK 0001474746 · 10% owner

Greylock XIII-A Limited Partnership · CIK 0001474747 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Greylock XIII-A Limited Partnership

Disclosed balance after: 553,656

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 · balance_after: Represents 553,656 shares converted from Class B Common Stock to Class A Common Stock by Greylock XIII-A Limited Partnership ("Greylock XIII-A LP").

F4 · ownership.nature: The shares are held directly by Greylock XIII-A LP. Greylock XIII GP is the sole General Partner of Greylock XIII-A LP and may be deemed to share voting and dispositive power with respect to the shares held by Greylock XIII-A LP. Greylock XIII GP disclaims beneficial ownership of the securities held by Greylock XIII LP except to the extent of any pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission by Greylock XIII GP of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0000899243-18-006466 · doc4.xml · nonDerivative · entry 1

Greylock XIII GP LLC · CIK 0001541539 · 10% owner

Greylock XIII Limited Partnership · CIK 0001474746 · 10% owner

Greylock XIII-A Limited Partnership · CIK 0001474747 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By Greylock XIII Limited Partnership

Disclosed balance after: 6,149,694

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 · shares: Represents 6,149,694 shares converted from Class B Common Stock to Class A Common Stock by Greylock XIII Limited Partnership ("Greylock XIII LP").

F1 · balance_after: Represents 6,149,694 shares converted from Class B Common Stock to Class A Common Stock by Greylock XIII Limited Partnership ("Greylock XIII LP").

F2 · ownership.nature: The shares are held directly by Greylock XIII LP. Greylock XIII GP Limited Liability Company ("Greylock XIII GP") is the sole General Partner of Greylock XIII LP and may be deemed to share voting and dispositive power with respect to the shares held by Greylock XIII LP. Greylock XIII GP disclaims beneficial ownership of the securities held by Greylock XIII LP except to the extent of any pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission by Greylock XIII GP of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

SEC source: 0001209191-18-017850 · doc4.xml · nonDerivative · entry 1

BHUSRI ANEEL · CIK 0001196579 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 593,630

F1 · ownership.direct: Represents an aggregate pro-rata, in-kind distribution to Mr. Bhusri from Greylock XIII LP, Greylock XIII Principals LLC and Greylock XIII-A Limited Partnership, without additional consideration. Such distribution was made in accordance with the exemption afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.

SEC source: 0001225208-18-005426 · doc4.xml · derivative · entry 1

SUTTER HILL VENTURES · CIK 0000879051 · Former 10% Holder

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 17,102,128 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the reporting person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F2 · kind: Effective March 2, 2018, Sutter Hill Ventures, a California Limited Partnership ("SHV") effected a pro rata distribution of 17,102,128 shares of Class B Common Stock to its limited partners and its general partner for no additional consideration, of which 12,826,596 shares were distributed to the limited partners and 4,275,532 shares, representing the general partner's interest in the distribution, were retained by SHV and are now being held by SHV as a nominee on behalf of, and for the exclusive benefit of, the members of the general partner. SHV has no pecuniary interest in such retained shares.

F2 · shares: Effective March 2, 2018, Sutter Hill Ventures, a California Limited Partnership ("SHV") effected a pro rata distribution of 17,102,128 shares of Class B Common Stock to its limited partners and its general partner for no additional consideration, of which 12,826,596 shares were distributed to the limited partners and 4,275,532 shares, representing the general partner's interest in the distribution, were retained by SHV and are now being held by SHV as a nominee on behalf of, and for the exclusive benefit of, the members of the general partner. SHV has no pecuniary interest in such retained shares.

F2 · price: Effective March 2, 2018, Sutter Hill Ventures, a California Limited Partnership ("SHV") effected a pro rata distribution of 17,102,128 shares of Class B Common Stock to its limited partners and its general partner for no additional consideration, of which 12,826,596 shares were distributed to the limited partners and 4,275,532 shares, representing the general partner's interest in the distribution, were retained by SHV and are now being held by SHV as a nominee on behalf of, and for the exclusive benefit of, the members of the general partner. SHV has no pecuniary interest in such retained shares.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the reporting person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the reporting person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F2 · derivative.underlying_shares: Effective March 2, 2018, Sutter Hill Ventures, a California Limited Partnership ("SHV") effected a pro rata distribution of 17,102,128 shares of Class B Common Stock to its limited partners and its general partner for no additional consideration, of which 12,826,596 shares were distributed to the limited partners and 4,275,532 shares, representing the general partner's interest in the distribution, were retained by SHV and are now being held by SHV as a nominee on behalf of, and for the exclusive benefit of, the members of the general partner. SHV has no pecuniary interest in such retained shares.

F3 · balance_after: Excludes shares of Class B Common Stock held by SHV as a nominee on behalf of, and of the exclusive benefit of, the members of the general partner of SHV.

SEC source: 0001225208-18-005427 · doc4.xml · derivative · entry 3

Speiser Michael L · CIK 0001433644 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Ltd Partnership (SHV)

Disclosed balance after: 0

Underlying: Class A Common Stock · 17,102,128 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the reporting person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F6 · kind: Effective March 2, 2018, SHV effected a pro rata distribution of 17,102,128 shares of Class B Common Stock to its limited partners and its general partner for no additional consideration, of which 12,826,596 shares were distributed to the limited partners and 4,275,532 shares, representing the general partner's interest in the distribution, were retained by SHV and are now being held by SHV as a nominee on behalf of, and for the exclusive benefit of, the members of the general partner. SHV has no pecuniary interest in such retained shares.

F6 · shares: Effective March 2, 2018, SHV effected a pro rata distribution of 17,102,128 shares of Class B Common Stock to its limited partners and its general partner for no additional consideration, of which 12,826,596 shares were distributed to the limited partners and 4,275,532 shares, representing the general partner's interest in the distribution, were retained by SHV and are now being held by SHV as a nominee on behalf of, and for the exclusive benefit of, the members of the general partner. SHV has no pecuniary interest in such retained shares.

F6 · price: Effective March 2, 2018, SHV effected a pro rata distribution of 17,102,128 shares of Class B Common Stock to its limited partners and its general partner for no additional consideration, of which 12,826,596 shares were distributed to the limited partners and 4,275,532 shares, representing the general partner's interest in the distribution, were retained by SHV and are now being held by SHV as a nominee on behalf of, and for the exclusive benefit of, the members of the general partner. SHV has no pecuniary interest in such retained shares.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the reporting person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the reporting person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F6 · derivative.underlying_shares: Effective March 2, 2018, SHV effected a pro rata distribution of 17,102,128 shares of Class B Common Stock to its limited partners and its general partner for no additional consideration, of which 12,826,596 shares were distributed to the limited partners and 4,275,532 shares, representing the general partner's interest in the distribution, were retained by SHV and are now being held by SHV as a nominee on behalf of, and for the exclusive benefit of, the members of the general partner. SHV has no pecuniary interest in such retained shares.

F7 · balance_after: Excludes shares of Class B Common Shares held by SHV as a nominee on behalf of, and for the exclusive benefit of, the members of the general partner of SHV.

F8 · ownership.nature: Shares held by SHV. The reporting person is a managing director and member of the management committee of the general partner of SHV. The reporting person disclaims beneficial ownership in these shares except as to the reporting person's pecuniary interest therein.

SEC source: 0001225208-18-005427 · doc4.xml · derivative · entry 2

Speiser Michael L · CIK 0001433644 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Ltd Partnership (SHV As Nominee)

Disclosed balance after: 3,072,254

Underlying: Class A Common Stock · 2,052,254 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the reporting person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F4 · kind: Represents the retention of shares by SHV, in connection with the distribution described below, for the benefit of a trust (of which the reporting person is a trustee), which is a member of the general partner of SHV.

F4 · shares: Represents the retention of shares by SHV, in connection with the distribution described below, for the benefit of a trust (of which the reporting person is a trustee), which is a member of the general partner of SHV.

F4 · price: Represents the retention of shares by SHV, in connection with the distribution described below, for the benefit of a trust (of which the reporting person is a trustee), which is a member of the general partner of SHV.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the reporting person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the reporting person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F4 · derivative.underlying_shares: Represents the retention of shares by SHV, in connection with the distribution described below, for the benefit of a trust (of which the reporting person is a trustee), which is a member of the general partner of SHV.

F4 · balance_after: Represents the retention of shares by SHV, in connection with the distribution described below, for the benefit of a trust (of which the reporting person is a trustee), which is a member of the general partner of SHV.

F5 · ownership.nature: Shares held by SHV as a nominee on behalf of, and for the exclusive benefit of a trust (of which the reporting person is a trustee), which is a member of the general partner of SHV. The reporting person disclaims beneficial ownership in these shares except as to the reporting person's pecuniary interest therein.

SEC source: 0001225208-18-005427 · doc4.xml · derivative · entry 1

Speiser Michael L · CIK 0001433644 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Ltd Liability Company (SHM)

Disclosed balance after: 232,226

Underlying: Class A Common Stock · 155,126 shares

Expires not disclosed

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible at any time at the option of the reporting person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F2 · kind: Represents the receipt of shares in the pro rata distribution described below, for no additional consideration, by Sutter Hill Management Company, L.L.C. ("SHM"), a limited partner of Sutter Hill Ventures, a California Limited Partnership ("SHV").

F2 · shares: Represents the receipt of shares in the pro rata distribution described below, for no additional consideration, by Sutter Hill Management Company, L.L.C. ("SHM"), a limited partner of Sutter Hill Ventures, a California Limited Partnership ("SHV").

F2 · price: Represents the receipt of shares in the pro rata distribution described below, for no additional consideration, by Sutter Hill Management Company, L.L.C. ("SHM"), a limited partner of Sutter Hill Ventures, a California Limited Partnership ("SHV").

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible at any time at the option of the reporting person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible at any time at the option of the reporting person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) October 6, 2025.

F2 · derivative.underlying: Represents the receipt of shares in the pro rata distribution described below, for no additional consideration, by Sutter Hill Management Company, L.L.C. ("SHM"), a limited partner of Sutter Hill Ventures, a California Limited Partnership ("SHV").

F2 · balance_after: Represents the receipt of shares in the pro rata distribution described below, for no additional consideration, by Sutter Hill Management Company, L.L.C. ("SHM"), a limited partner of Sutter Hill Ventures, a California Limited Partnership ("SHV").

F3 · ownership.nature: Shares held by SHM. SHV has voting and dispositive power over the shares held by SHM, and the reporting person is a trustee of a trust which is a member of SHM. The reporting person disclaims beneficial ownership in these shares except as to the reporting person's pecuniary interest therein.

SEC source: 0001209191-18-015184 · doc4.xml · nonDerivative · entry 3

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 364,529

F3 · shares: The shares of Class A Common Stock are to be acquired upon the vesting of a PRSU award granted to the Reporting Person. The Committee authorized the issuance of the underlying Class A Common Stock based upon the Company's achievement level against a financial target set by the Committee on March 30, 2017. The performance period for the award was February 1, 2017 to January 31, 2018, with vesting subject to a determination of performance achievement by the Committee, which was approved on February 27, 2018. As a result, 1/4th of this PRSU award shall vest on each of July 5, 2019, October 5, 2019, January 5, 2020 and April 5, 2020, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.

SEC source: 0001209191-18-015184 · doc4.xml · nonDerivative · entry 2

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 324,529

F2 · shares: The shares of Class A Common Stock are to be acquired upon the vesting of a PRSU award granted to the Reporting Person. The Committee authorized the issuance of the underlying Class A Common Stock based upon the Company's achievement level against a financial target set by the Committee on March 30, 2017. The performance period for the award was February 1, 2017 to January 31, 2018, with vesting subject to a determination of performance achievement by the Committee, which was approved on February 27, 2018. As a result, 1/4th of this PRSU award shall vest on each of July 5, 2018, October 5, 2018, January 5, 2019 and April 5, 2019, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.

SEC source: 0001209191-18-015184 · doc4.xml · nonDerivative · entry 1

Riitters Timothy · CIK 0001651904 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 284,529

F1 · shares: The shares of Class A Common Stock are to be acquired upon the vesting of a Performance-Based Restricted Stock Unit ("PRSU") award granted to the Reporting Person. The Issuer's Compensation Committee (the "Committee") authorized the issuance of the underlying Class A Common Stock based upon the Company's achievement against a financial target set by the Committee on March 30, 2017. The performance period for the award was February 1, 2017 to January 31, 2018, with vesting subject to a determination of performance achievement by the Committee, which was approved on February 27, 2018. As a result, this PRSU award shall vest in full on April 5, 2018, subject to Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such date.

SEC source: 0001209191-18-015179 · doc4.xml · nonDerivative · entry 3

Hatfield David · CIK 0001395529 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 241,172

F3 · shares: The shares of Class A Common Stock are to be acquired upon the vesting of a PRSU award granted to the Reporting Person. The Committee authorized the issuance of the underlying Class A Common Stock based upon the Company's achievement level against a financial target set by the Committee on March 30, 2017. The performance period for the award was February 1, 2017 to January 31, 2018, with vesting subject to a determination of performance achievement by the Committee, which was approved on February 27, 2018. As a result, 1/4th of this PRSU award shall vest on each of July 5, 2019, October 5, 2019, January 5, 2020 and April 5, 2020, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.

SEC source: 0001209191-18-015179 · doc4.xml · nonDerivative · entry 2

Hatfield David · CIK 0001395529 · President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 221,171

F2 · shares: The shares of Class A Common Stock are to be acquired upon the vesting of a PRSU award granted to the Reporting Person. The Committee authorized the issuance of the underlying Class A Common Stock based upon the Company's achievement level against a financial target set by the Committee on March 30, 2017. The performance period for the award was February 1, 2017 to January 31, 2018, with vesting subject to a determination of performance achievement by the Committee, which was approved on February 27, 2018. As a result, 1/4th of this PRSU award shall vest on each of July 5, 2018, October 5, 2018, January 5, 2019 and April 5, 2019, subject to the Reporting Person's Continuous Service (as defined in the Issuer's 2015 Equity Incentive Plan) through such dates.