MGNI

SEC source: 0001595974-20-000062 · wf-form4_159001728373414.xml · nonDerivative · entry 1

Filip Eve · CIK 0001745181 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 152,054

F1 · kind: Represents the non-discretionary sale of shares on behalf of the reporting person pursuant to an arrangement mandated by the Issuer to cover the tax withholding obligations associated with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.31 to $5.63, inclusive. The reporting person undertakes to provide The Rubicon Project, Inc., any security holder of The Rubicon Project, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F3 · balance_after: Adjusted to reflect the acquisition of 1204 shares under The Rubicon Project, Inc. 2014 Employee Stock Purchase Plan on November 15, 2019.

SEC source: 0001595974-20-000080 · wf-form4a_159139027395107.xml · nonDerivative · entry 1

BARRETT MICHAEL G. · CIK 0001100612 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,747,858

F1 · kind: Represents the non-discretionary sale of shares on behalf of the reporting person pursuant to an arrangement mandated by the Issuer to cover the tax withholding obligations associated with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.31 to $5.63, inclusive. The reporting person undertakes to provide The Rubicon Project, Inc., any security holder of The Rubicon Project, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F3 · balance_after: Adjusted to reflect the acquisition of 3090 shares under The Rubicon Project, Inc. 2014 Employee Stock Purchase Plan on May 15, 2020

SEC source: 0001595974-20-000084 · wf-form4a_159139036003402.xml · nonDerivative · entry 1

Prusz Joseph R · CIK 0001721039 · Global Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 431,649

F1 · kind: Represents the non-discretionary sale of shares on behalf of the reporting person pursuant to an arrangement mandated by the Issuer to cover the tax withholding obligations associated with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.31 to 5.63, inclusive. The reporting person undertakes to provide The Rubicon Project, Inc., any security holder of The Rubicon Project, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001595974-20-000083 · wf-form4a_159139033844899.xml · nonDerivative · entry 1

Kershaw Thomas · CIK 0001686179 · Chief Technology Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 649,772

F1 · kind: Represents the non-discretionary sale of shares on behalf of the reporting person pursuant to an arrangement mandated by the Issuer to cover the tax withholding obligations associated with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.31 to $5.63, inclusive. The reporting person undertakes to provide The Rubicon Project, Inc., any security holder of The Rubicon Project, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001595974-20-000085 · wf-form4a_159139038096742.xml · nonDerivative · entry 1

Tuller Blima · CIK 0001412316 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 164,602

F1 · kind: Represents the non-discretionary sale of shares on behalf of the reporting person pursuant to an arrangement mandated by the Issuer to cover the tax withholding obligations associated with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.31 to $5.63, inclusive. The reporting person undertakes to provide The Rubicon Project, Inc., any security holder of The Rubicon Project, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001595974-20-000082 · wf-form4a_159139031687957.xml · nonDerivative · entry 1

Filip Eve · CIK 0001745181 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 152,054

F1 · kind: Represents the non-discretionary sale of shares on behalf of the reporting person pursuant to an arrangement mandated by the Issuer to cover the tax withholding obligations associated with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.31 to $5.63, inclusive. The reporting person undertakes to provide The Rubicon Project, Inc., any security holder of The Rubicon Project, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F3 · balance_after: Adjusted to reflect the acquisition of 1204 shares under The Rubicon Project, Inc. 2014 Employee Stock Purchase Plan on November 15, 2019.

SEC source: 0001595974-20-000081 · wf-form4a_159139029507069.xml · nonDerivative · entry 1

Day David · CIK 0001523288 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 378,720

F1 · kind: Represents the non-discretionary sale of shares on behalf of the reporting person pursuant to an arrangement mandated by the Issuer to cover the tax withholding obligations associated with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.31 to $5.63, inclusive. The reporting person undertakes to provide The Rubicon Project, Inc., any security holder of The Rubicon Project, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein.

SEC source: 0001595974-20-000079 · wf-form4a_159138980160064.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · Head of Global Buyer Team

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 435,983

F1 · kind: Represents the non-discretionary sale of shares on behalf of the reporting person pursuant to an arrangement mandated by the Issuer to cover the tax withholding obligations associated with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.31 to $5.63, inclusive. The reporting person undertakes to provide The Rubicon Project, Inc., any security holder of The Rubicon Project, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-20-023281 · doc4.xml · derivative · entry 8

Saltz Aaron · CIK 0001807986 · General Counsel & Secy

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,876

Underlying: Common Stock · 30,876 shares

Expires 2030-04-01

F8 · derivative.exercise_date: 25% of the total number of shares underlying this option will vest on April 1, 2021 and the remaining shares vest 1/36 per month over the next 36 months thereafter, subject to continued service to the Issuer through each vesting date.

SEC source: 0001209191-20-023281 · doc4.xml · derivative · entry 7

Saltz Aaron · CIK 0001807986 · General Counsel & Secy

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,447

Underlying: Common Stock · 27,447 shares

Expires 2029-02-28

F7 · derivative.exercise_date: 25% of the total number of shares underlying this option vested on February 14, 2020 and the remaining shares vest 1/36 per month over the next 36 months thereafter, subject to continued service to the Issuer through each vesting date.

SEC source: 0001209191-20-023281 · doc4.xml · derivative · entry 6

Saltz Aaron · CIK 0001807986 · General Counsel & Secy

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,137

Underlying: Common Stock · 56,137 shares

Expires 2028-02-27

F6 · derivative.exercise_date: 25% of the total number of shares underlying this option vested on February 14, 2019 and the remaining shares vest 1/36 per month over the next 36 months thereafter, subject to continued service to the Issuer through each vesting date.

SEC source: 0001209191-20-023281 · doc4.xml · derivative · entry 5

Saltz Aaron · CIK 0001807986 · General Counsel & Secy

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,410

Underlying: Common Stock · 5,410 shares

Expires 2023-07-31

F5 · derivative.exercise_date: Immediately exercisable.

SEC source: 0001209191-20-023281 · doc4.xml · derivative · entry 4

Saltz Aaron · CIK 0001807986 · General Counsel & Secy

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,852

Underlying: Common Stock · 28,852 shares

Expires 2023-03-05

F5 · derivative.exercise_date: Immediately exercisable.

SEC source: 0001209191-20-023281 · doc4.xml · nonDerivative · entry 3

Saltz Aaron · CIK 0001807986 · General Counsel & Secy

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 355,927

F4 · shares: Grant to the Reporting Person of an RSU. Each RSU represents a contingent right to receive one share of common stock of the Issuer. The shares underlying the RSU will vest as to 50% on April 1, 2021 and 50% on April 1, 2022, provided the Reporting Person continues to provide services to the Issuer on each such vesting date.

F4 · price: Grant to the Reporting Person of an RSU. Each RSU represents a contingent right to receive one share of common stock of the Issuer. The shares underlying the RSU will vest as to 50% on April 1, 2021 and 50% on April 1, 2022, provided the Reporting Person continues to provide services to the Issuer on each such vesting date.

SEC source: 0001209191-20-023281 · doc4.xml · nonDerivative · entry 2

Saltz Aaron · CIK 0001807986 · General Counsel & Secy

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 282,597

F3 · shares: Grant to the Reporting Person of an RSU. Each RSU represents a contingent right to receive one share of common stock of the Issuer. The shares underlying the RSU will vest as to (i) 11,122 shares on May 15, 2021, (ii) 2,566 shares on each February 15, May 15, August 15 and November 15 thereafter until February 15, 2024 and (iii) 1,717 shares on May 15, 2024, provided the Reporting Person continues to provide services to the Issuer on each such vesting date.

F3 · price: Grant to the Reporting Person of an RSU. Each RSU represents a contingent right to receive one share of common stock of the Issuer. The shares underlying the RSU will vest as to (i) 11,122 shares on May 15, 2021, (ii) 2,566 shares on each February 15, May 15, August 15 and November 15 thereafter until February 15, 2024 and (iii) 1,717 shares on May 15, 2024, provided the Reporting Person continues to provide services to the Issuer on each such vesting date.

SEC source: 0001209191-20-023281 · doc4.xml · nonDerivative · entry 1

Saltz Aaron · CIK 0001807986 · General Counsel & Secy

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 241,532

F1 · kind: Received on April 1, 2020, the effective date (the "Effective Date") of the merger between the Issuer and Telaria, Inc. ("Telaria"), pursuant to that certain Agreement and Plan of Merger, dated as of December 19, 2019. At the closing of the merger, Telaria common stock and restricted stock units were converted to Issuer common stock and Issuer restricted stock units at an exchange ratio of 1.082.

F1 · shares: Received on April 1, 2020, the effective date (the "Effective Date") of the merger between the Issuer and Telaria, Inc. ("Telaria"), pursuant to that certain Agreement and Plan of Merger, dated as of December 19, 2019. At the closing of the merger, Telaria common stock and restricted stock units were converted to Issuer common stock and Issuer restricted stock units at an exchange ratio of 1.082.

F1 · price: Received on April 1, 2020, the effective date (the "Effective Date") of the merger between the Issuer and Telaria, Inc. ("Telaria"), pursuant to that certain Agreement and Plan of Merger, dated as of December 19, 2019. At the closing of the merger, Telaria common stock and restricted stock units were converted to Issuer common stock and Issuer restricted stock units at an exchange ratio of 1.082.

F2 · balance_after: Includes (i) 27,050 shares underlying restricted stock units (the "RSUs"), which will vest on February 14, 2021; (ii) 13,871 shares underlying RSUs, which will vest 50% on February 14, 2021 and 50% on February 14, 2022; and (iii) 31,266 shares underlying RSUs, which will vest in three equal installments on each of February 14, 2021, February 14, 2022 and February 14, 2023, in each case, subject to continued service as of such vesting date.

SEC source: 0001595974-20-000041 · wf-form4_158594761206259.xml · derivative · entry 3

BARRETT MICHAEL G. · CIK 0001100612 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 146,341

Underlying: Common Stock · 146,341 shares

Expires not disclosed

F4 · derivative.exercise_price: Each performance stock unit ("PSU") represents a contingent right to receive on vesting one share of the issuer's common stock.

F2 · price: Granted as compensation for services.

F5 · derivative.exercise_date: Vesting of the PSU will be determined based on the issuer's total stockholder return ("TSR") for the three-year period beginning on the grant date of the award relative to the TSRs of the companies in the Russell 2000 index over that period. The number of PSUs reported in column 5 reflects the target number of PSUs subject to the award. The award is eligible to vest as to 0% to 150% of the target number of PSUs.

F5 · derivative.expiration_date: Vesting of the PSU will be determined based on the issuer's total stockholder return ("TSR") for the three-year period beginning on the grant date of the award relative to the TSRs of the companies in the Russell 2000 index over that period. The number of PSUs reported in column 5 reflects the target number of PSUs subject to the award. The award is eligible to vest as to 0% to 150% of the target number of PSUs.

SEC source: 0001595974-20-000041 · wf-form4_158594761206259.xml · derivative · entry 2

BARRETT MICHAEL G. · CIK 0001100612 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 231,568

Underlying: Common Stock · 231,568 shares

Expires 2030-04-01

F2 · price: Granted as compensation for services.

F3 · derivative.exercise_date: 25% of the stock options will vest on April 1, 2021 and the remaining option shares will become exercisable in 36 equal installments each calendar month thereafter.

SEC source: 0001595974-20-000041 · wf-form4_158594761206259.xml · nonDerivative · entry 1

BARRETT MICHAEL G. · CIK 0001100612 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,786,177

F1 · shares: Represents restricted stock units that vest as follows: 47,664 on May 15, 2021, 11,000 on each August 15, November 15, February 15, and May 15 thereafter until February 15, 2024 and 7,328 on May 15, 2024.

F2 · price: Granted as compensation for services.

SEC source: 0001595974-20-000045 · wf-form4_158594770798153.xml · derivative · entry 2

Prusz Joseph R · CIK 0001721039 · Global Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,908

Underlying: Common Stock · 84,908 shares

Expires 2030-04-01

F2 · price: Granted as compensation for services.

F3 · derivative.exercise_date: 25% of the stock options will vest on April 1, 2021 and the remaining option shares will become exercisable in 36 equal installments each calendar month thereafter.

SEC source: 0001595974-20-000045 · wf-form4_158594770798153.xml · nonDerivative · entry 1

Prusz Joseph R · CIK 0001721039 · Global Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 440,235

F1 · shares: Represents restricted stock units that vest as follows: 30,585 on May 15, 2021, 7,058 on each August 15, November 15, February 15, and May 15 thereafter until February 15, 2024 and 4,705 on May 15, 2024.

F2 · price: Granted as compensation for services.

SEC source: 0001595974-20-000044 · wf-form4_158594768586266.xml · derivative · entry 2

Kershaw Thomas · CIK 0001686179 · Chief Technology Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 115,784

Underlying: Common Stock · 115,784 shares

Expires 2030-04-01

F2 · price: Granted as compensation for services.

F3 · derivative.exercise_date: 25% of the stock options will vest on April 1, 2021 and the remaining option shares will become exercisable in 36 equal installments each calendar month thereafter.

SEC source: 0001595974-20-000044 · wf-form4_158594768586266.xml · nonDerivative · entry 1

Kershaw Thomas · CIK 0001686179 · Chief Technology Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 665,894

F1 · shares: Represents restricted stock units that vest as follows: 41,706 on May 15, 2021, 9,625 on each August 15, November 15, February 15, and May 15 thereafter until February 15, 2024 and 6,412 on May 15, 2024.

F2 · price: Granted as compensation for services.

SEC source: 0001209191-20-023272 · doc4.xml · nonDerivative · entry 1

Caine Paul · CIK 0001411765 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 186,172

F1 · price: Received on April 1, 2020, the effective date (the "Effective Date") of the merger between the Issuer and Telaria, Inc. ("Telaria") pursuant to that certain Agreement and Plan of Merger, dated as of December 19, 2019 (the "Merger Agreement") at a rate of 1.082 shares of the Issuer's common stock for (i) each share of previously held Telaria common stock, and (ii) each share underlying previously held Telaria restricted stock units that vested on the Effective Date.

SEC source: 0001209191-20-023279 · doc4.xml · derivative · entry 3

Rossman James · CIK 0001296625 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,066

Underlying: Common Stock · 36,066 shares

Expires 2022-08-06

F2 · derivative.exercise_date: Immediately exercisable.

SEC source: 0001209191-20-023279 · doc4.xml · derivative · entry 2

Rossman James · CIK 0001296625 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 112,087

Underlying: Common Stock · 112,087 shares

Expires 2021-01-19

F2 · derivative.exercise_date: Immediately exercisable.

SEC source: 0001209191-20-023279 · doc4.xml · nonDerivative · entry 1

Rossman James · CIK 0001296625 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 180,038

F1 · price: Received on April 1, 2020, the effective date (the "Effective Date") of the merger between the Issuer and Telaria, Inc. ("Telaria") pursuant to that certain Agreement and Plan of Merger, dated as of December 19, 2019 (the "Merger Agreement") at a rate of 1.082 shares of the Issuer's common stock for (i) each share of previously held Telaria common stock, and (ii) each share underlying previously held Telaria restricted stock units that vested on the Effective Date.

SEC source: 0001209191-20-023274 · doc4.xml · nonDerivative · entry 1

Knopper Douglas S · CIK 0001350876 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,884

F1 · price: Received on April 1, 2020, the effective date (the "Effective Date") of the merger between the Issuer and Telaria, Inc. ("Telaria") pursuant to that certain Agreement and Plan of Merger, dated as of December 19, 2019 (the "Merger Agreement") at a rate of 1.082 shares of the Issuer's common stock for (i) each share of previously held Telaria common stock, and (ii) each share underlying previously held Telaria restricted stock units that vested on the Effective Date.

SEC source: 0001595974-20-000042 · wf-form4_158594763586041.xml · derivative · entry 2

Day David · CIK 0001523288 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 115,784

Underlying: Common Stock · 115,784 shares

Expires 2030-04-01

F2 · price: Granted as compensation for services.

F3 · derivative.exercise_date: 25% of the stock options will vest on April 1, 2021 and the remaining option shares will become exercisable in 36 equal installments each calendar month thereafter.

SEC source: 0001595974-20-000042 · wf-form4_158594763586041.xml · nonDerivative · entry 1

Day David · CIK 0001523288 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 389,866

F1 · shares: Represents restricted stock units that vest as follows: 41,706 on May 15, 2021, 9,625 on each August 15, November 15, February 15, and May 15 thereafter until February 15, 2024 and 6,412 on May 15, 2024.

F2 · price: Granted as compensation for services.

SEC source: 0001209191-20-023275 · doc4.xml · nonDerivative · entry 1

Lam Rachel · CIK 0001579232 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 167,891

F1 · price: Received on April 1, 2020, the effective date (the "Effective Date") of the merger between the Issuer and Telaria, Inc. ("Telaria") pursuant to that certain Agreement and Plan of Merger, dated as of December 19, 2019 (the "Merger Agreement") at a rate of 1.082 shares of the Issuer's common stock for (i) each share of previously held Telaria common stock, and (ii) each share underlying previously held Telaria restricted stock units that vested on the Effective Date.

SEC source: 0001209191-20-023285 · doc4.xml · derivative · entry 6

Zagorski Mark · CIK 0001709574 · President & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 486,900

Underlying: Common Stock · 486,900 shares

Expires 2027-07-10

F7 · derivative.exercise_date: The shares underlying this option are fully vested. 50% of the shares underlying the option are currently exercisable and 50% of the shares underlying the option will be exercisable in September 2020, subject to continued service to the Issuer

SEC source: 0001209191-20-023285 · doc4.xml · derivative · entry 5

Zagorski Mark · CIK 0001709574 · President & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 486,900

Underlying: Common Stock · 486,900 shares

Expires 2027-07-10

F6 · derivative.exercise_date: 25% of the total number of shares underlying this option vested on July 10, 2018 and the remaining shares were scheduled to vest 1/48 per month over the next 36 months thereafter, subject to continued service to the Issuer through each vesting date. In connection with the merger, vesting was partially accelerated so that on the Effective Date, the Reporting Person immediately vested in that number of shares underlying the option as if he had provided an additional 12 months of continuous service as of the Effective Date. Commencing on April 10, 2021, subject to continuous service, the shares underlying the options will continue to vest 1/48 per month until fully vested.

SEC source: 0001209191-20-023285 · doc4.xml · derivative · entry 4

Zagorski Mark · CIK 0001709574 · President & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 73,192

Underlying: Common Stock · 73,192 shares

Expires 2029-02-28

F5 · derivative.exercise_date: 25% of the total number of shares underlying this option vested on February 14, 2020 and the remaining shares were scheduled to vest 1/48 per month over the next 36 months thereafter, subject to continued service to the Issuer through each vesting date. In connection with the merger, vesting was partially accelerated so that on the Effective Date, the Reporting Person immediately vested in that number of shares underlying the option as if he had provided an additional 12 months of continuous service on the Effective Date. Commencing on April 14, 2021, subject to continuous service, the shares underlying the options will continue to vest 1/48 per month until fully vested.

SEC source: 0001209191-20-023285 · doc4.xml · derivative · entry 3

Zagorski Mark · CIK 0001709574 · President & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 168,412

Underlying: Common Stock · 168,412 shares

Expires 2028-02-27

F4 · derivative.exercise_date: 25% of the total number of shares underlying this option vested on February 14, 2019 and the remaining shares were scheduled to vest 1/48 per month over the next 36 months thereafter, subject to continued service to the Issuer through each vesting date. In connection with the merger, vesting was partially accelerated so that on the Effective Date, the Reporting Person immediately vested in that number of shares underlying the option as if he had provided an additional 12 months of continuous service as of the Effective Date. Commencing on April 14, 2021, subject to continuous service, the shares underlying the options will continue to vest 1/48 per month until full vested.

SEC source: 0001209191-20-023285 · doc4.xml · nonDerivative · entry 2

Zagorski Mark · CIK 0001709574 · President & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 436,917

F3 · shares: Grant to the Reporting Person of an RSU. Each RSU represents a contingent right to receive one share of common stock of the Issuer. The shares underlying the RSU will vest in full on October 1, 2020, provided the Reporting Person continues to provide services to the Issuer on such vesting date.

F3 · price: Grant to the Reporting Person of an RSU. Each RSU represents a contingent right to receive one share of common stock of the Issuer. The shares underlying the RSU will vest in full on October 1, 2020, provided the Reporting Person continues to provide services to the Issuer on such vesting date.

SEC source: 0001209191-20-023285 · doc4.xml · nonDerivative · entry 1

Zagorski Mark · CIK 0001709574 · President & COO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 348,921

F1 · price: Received on April 1, 2020, the effective date (the "Effective Date") of the merger between the Issuer and Telaria, Inc. ("Telaria"), pursuant to that certain Agreement and Plan of Merger, dated as of December 19, 2019. At the closing of the merger, Telaria common stock and restricted stock units were converted to Issuer common stock and Issuer restricted stock units (the "RSUs") at an exchange ratio of 1.082.

F2 · balance_after: Includes (i) 90,629 shares underlying RSUs that vested on the Effective Date in connection with the merger, (ii) 50,432 RSUs that will vest on July 10, 2021; (iii) 20,806 RSUs that will vest on February 14, 2022, (iv) 19,390 RSUs that will vest on February 14, 2022, and (v) 19,391 RSUs that will vest on February 14, 2023, in each case subject to the Reporting Person providing Continuous Service to the Issuer on each such date.

SEC source: 0001595974-20-000046 · wf-form4_158594772974306.xml · derivative · entry 2

Soroca Adam Lee · CIK 0001725125 · Head of Global Buyer Team

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,908

Underlying: Common Stock · 84,908 shares

Expires 2030-04-01

F2 · price: Granted as compensation for services.

F3 · derivative.exercise_date: 25% of the stock options will vest on April 1, 2021 and the remaining option shares will become exercisable in 36 equal installments each calendar month thereafter.

SEC source: 0001595974-20-000046 · wf-form4_158594772974306.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · Head of Global Buyer Team

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 444,300

F1 · shares: Represents restricted stock units that vest as follows: 30,585 on May 15, 2021, 7,058 on each August 15, November 15, February 15, and May 15 thereafter until February 15, 2024 and 4,705 on May 15, 2024.

F2 · price: Granted as compensation for services.

SEC source: 0001595974-20-000043 · wf-form4_158594766127791.xml · derivative · entry 2

Filip Eve · CIK 0001745181 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,665

Underlying: Common Stock · 36,665 shares

Expires 2030-04-01

F2 · price: Granted as compensation for services.

F3 · derivative.exercise_date: 25% of the stock options will vest on April 1, 2021 and the remaining option shares will become exercisable in 36 equal installments each calendar month thereafter.

SEC source: 0001595974-20-000043 · wf-form4_158594766127791.xml · nonDerivative · entry 1

Filip Eve · CIK 0001745181 · See remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,401

F1 · shares: Represents restricted stock units that vest as follows: 13,207 on May 15, 2021, 3,048 on each August 15, November 15, February 15, and May 15 thereafter until February 15, 2024 and 2,029 on May 15, 2024.

F2 · price: Granted as compensation for services.

SEC source: 0001595974-20-000048 · wf-form4_158741877416528.xml · nonDerivative · entry 1

Tuller Blima · CIK 0001412316 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 168,701

F1 · shares: Represents restricted stock units that vest as follows: 11,916 on May 15, 2021, 2,750 on each August 15, November 15, February 15, and May 15 thereafter until February 15, 2024 and 1,832 on May 15, 2024.

F2 · price: Granted as compensation for services.

SEC source: 0001595974-20-000028 · wf-form4_158448746010404.xml · nonDerivative · entry 1

ADDANTE FRANK · CIK 0001603807 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,134,819

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.79 to $5.32, inclusive. The reporting person undertakes to provide The Rubicon Project, Inc., any security holder of The Rubicon Project, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001595974-20-000020 · wf-form4_158223959038367.xml · nonDerivative · entry 1

ADDANTE FRANK · CIK 0001603807 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,159,819

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.00 to $11.92, inclusive. The reporting person undertakes to provide The Rubicon Project, Inc., any security holder of The Rubicon Project, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001595974-20-000011 · wf-form4_157965193235135.xml · nonDerivative · entry 1

BARRETT MICHAEL G. · CIK 0001100612 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,610,185

F1 · kind: Shares withheld by the issuer to cover the reporting person's tax liability incurred upon the vesting of the reporting person's restricted stock units.

SEC source: 0001595974-20-000016 · wf-form4_157965204239433.xml · nonDerivative · entry 1

Prusz Joseph R · CIK 0001721039 · Global Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 327,307

F1 · kind: Shares withheld by the issuer to cover the reporting person's tax liability incurred upon the vesting of the reporting person's restricted stock units.

SEC source: 0001595974-20-000015 · wf-form4_157965201938085.xml · nonDerivative · entry 1

Kershaw Thomas · CIK 0001686179 · Chief Technology Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 511,901

F1 · kind: Shares withheld by the issuer to cover the reporting person's tax liability incurred upon the vesting of the reporting person's restricted stock units.

SEC source: 0001595974-20-000018 · wf-form4_157965208567645.xml · nonDerivative · entry 1

Tuller Blima · CIK 0001412316 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 124,703

F1 · kind: Shares withheld by the issuer to cover the reporting person's tax liability incurred upon the vesting of the reporting person's restricted stock units.

SEC source: 0001595974-20-000012 · wf-form4_157965195536695.xml · nonDerivative · entry 2

Day David · CIK 0001523288 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 235,873

F2 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.25 to $10.51, inclusive. The reporting person undertakes to provide The Rubicon Project, Inc., any security holder of The Rubicon Project, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001595974-20-000012 · wf-form4_157965195536695.xml · nonDerivative · entry 1

Day David · CIK 0001523288 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 260,420

F1 · kind: Shares withheld by the issuer to cover the reporting person's tax liability incurred upon the vesting of the reporting person's restricted stock units.