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Soroca Adam Lee

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65853
SEC CIK
0001725125

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
MAGNITE, INC.MGNI · Entity 2049CHIEF PRODUCT OFFICERFebruary 15, 2026February 18, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

MAGNITE, INC.

Report date February 15, 2026 · Filed February 18, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect388,425 Ending reported balance After 2026-02-18 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-02-15 · Tax withholding · Disposed 18,933 · Balance 409,954

F1: Represents the non-discretionary forfeiture 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.

Row 2 · 2026-02-18 · Sale · Disposed 21,529 · Balance 388,425

F2: These sales were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

Filing footnotes · ownership attribution and instrument terms

F1: Represents the non-discretionary forfeiture 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: These sales were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
February 18, 2026 Filed Feb 18, 2026 21:55 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 21,529 $12.00 $258,348.00
Disclosure

SEC source: 0001725125-26-000003 · form4-02182026_090258.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 388,425

F2 · kind: These sales were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

Read SEC document
February 15, 2026 Filed Feb 18, 2026 21:55 UTC MAGNITE, INC. MGNI · Entity 2049 Tax withholdingCommon Stock 18,933 $11.70 $221,516.10
Disclosure

SEC source: 0001725125-26-000003 · form4-02182026_090258.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 409,954

F1 · kind: Represents the non-discretionary forfeiture 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.

Read SEC document
January 09, 2026 Filed Jan 12, 2026 21:30 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionPerformance Stock Units · Derivative 51,300 $0.00 $0.00
Disclosure

SEC source: 0001725125-26-000002 · form4-01122026_040113.xml · derivative · entry 3

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 51,300 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.

F3 · derivative.exercise_price: Each PSU represents a contingent right to receive, on vesting, one share of the Issuer's common stock, subject to Issuer performance as more specifically described in Footnote 4 herein.

F1 · price: Equity grant under the Company's Amended and Restated 2014 Equity Incentive Plan.

F4 · derivative.exercise_date: Vesting of the PSU was determined based on the Issuer's total stockholder return ("TSR") for the three-year period beginning on January 1, 2023 relative to the TSRs of the companies in the Russell 2000 index over that period. The number of PSUs reported in column 5 on the Form 4 filed with the Securities and Exchange Commission on January 4, 2023 reflected the target number of PSUs initially subject to the award. The award was eligible to vest as to 0% to 150% of the target number of PSUs. On January 9, 2026, the Compensation Committee of the Issuer's Board of Directors determined that, based on 126.35% achievement, the Reporting Person actually vested 51,300 shares.

F4 · derivative.expiration_date: Vesting of the PSU was determined based on the Issuer's total stockholder return ("TSR") for the three-year period beginning on January 1, 2023 relative to the TSRs of the companies in the Russell 2000 index over that period. The number of PSUs reported in column 5 on the Form 4 filed with the Securities and Exchange Commission on January 4, 2023 reflected the target number of PSUs initially subject to the award. The award was eligible to vest as to 0% to 150% of the target number of PSUs. On January 9, 2026, the Compensation Committee of the Issuer's Board of Directors determined that, based on 126.35% achievement, the Reporting Person actually vested 51,300 shares.

Read SEC document
January 09, 2026 Filed Jan 12, 2026 21:30 UTC MAGNITE, INC. MGNI · Entity 2049 Tax withholdingCommon Stock 25,330 $16.17 $409,586.10
Disclosure

SEC source: 0001725125-26-000002 · form4-01122026_040113.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 428,887

F2 · kind: Represents the non-discretionary forfeiture 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 the performance stock units ("PSUs") being reported herein.

Read SEC document
January 09, 2026 Filed Jan 12, 2026 21:30 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionCommon Stock 51,300 $0.00 $0.00
Disclosure

SEC source: 0001725125-26-000002 · form4-01122026_040113.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 454,217

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 · price: Equity grant under the Company's Amended and Restated 2014 Equity Incentive Plan.

Read SEC document
January 01, 2026 Filed Jan 6, 2026 00:16 UTC MAGNITE, INC. MGNI · Entity 2049 GrantPerformance Stock Units · Derivative 25,801 $0.00 $0.00
Disclosure

SEC source: 0001725125-26-000001 · form4-01062026_120124.xml · derivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,801

Underlying: Common Stock · 25,801 shares

Expires not disclosed

F3 · 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: Equity grant under the Company's Amended and Restated 2014 Equity Incentive Plan.

F4 · derivative.exercise_date: The PSUs will generally vest on the three-year anniversary of the grant date of the award subject to the Reporting Person's continued service through such date. The number of shares vested will be determined based on the Issuer's total stockholder return ("TSR") relative to the TSRs of the companies in the Russell 2000 index for the three year-period beginning January 1, 2026, as well as certain interim measurements based on relative TSR for the one-year and two-year periods beginning on January 1, 2026. 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.

F4 · derivative.expiration_date: The PSUs will generally vest on the three-year anniversary of the grant date of the award subject to the Reporting Person's continued service through such date. The number of shares vested will be determined based on the Issuer's total stockholder return ("TSR") relative to the TSRs of the companies in the Russell 2000 index for the three year-period beginning January 1, 2026, as well as certain interim measurements based on relative TSR for the one-year and two-year periods beginning on January 1, 2026. 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.

Read SEC document
January 01, 2026 Filed Jan 6, 2026 00:16 UTC MAGNITE, INC. MGNI · Entity 2049 GrantCommon Stock 76,803 $0.00 $0.00
Disclosure

SEC source: 0001725125-26-000001 · form4-01062026_120124.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 402,917

F1 · shares: Represents restricted stock units that vest as follows: 20,801 on February 15, 2027, 4,800 on each May 15, August 15, November 15, and February 15 thereafter until November 15, 2029 and 3,202 on February 15, 2030, subject to continued service to the Issuer through each vesting date. This equity grant may be subject to accelerated vesting in the event the Reporting Person's employment is terminated under certain circumstances.

F2 · price: Equity grant under the Company's Amended and Restated 2014 Equity Incentive Plan.

Read SEC document
December 17, 2025 Filed Dec 19, 2025 21:15 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 16,656 $0.00 Strike: $4.92 $0.00
Disclosure

SEC source: 0001725125-25-000006 · form4-12192025_041203.xml · derivative · entry 3

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 80,001

Underlying: Common Stock · 16,656 shares

Expires 2029-02-20

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: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

F3 · price: Granted as compensation for services.

F2 · derivative.exercise_date: The stock options have fully vested and are immediately exercisable.

Read SEC document
December 17, 2025 Filed Dec 19, 2025 21:15 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 16,656 $17.00 $283,152.00
Disclosure

SEC source: 0001725125-25-000006 · form4-12192025_041203.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 326,114

F1 · kind: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

Read SEC document
December 17, 2025 Filed Dec 19, 2025 21:15 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionCommon Stock 16,656 $4.92 $81,947.52
Disclosure

SEC source: 0001725125-25-000006 · form4-12192025_041203.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 342,770

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: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

Read SEC document
November 18, 2025 Filed Nov 19, 2025 00:39 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 10,857 $13.23 $143,638.11
Disclosure

SEC source: 0001725125-25-000004 · form4-11192025_121145.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 326,114

F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 28, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.13 to $13.30, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4.

Read SEC document
November 15, 2025 Filed Nov 19, 2025 00:39 UTC MAGNITE, INC. MGNI · Entity 2049 Tax withholdingCommon Stock 9,422 $14.15 $133,321.30
Disclosure

SEC source: 0001725125-25-000004 · form4-11192025_121145.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 336,971

F1 · kind: Represents the non-discretionary forfeiture 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.

Read SEC document
September 02, 2025 Filed Sep 4, 2025 21:00 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 24,986 $0.00 Strike: $4.92 $0.00
Disclosure

SEC source: 0001415889-25-023709 · form4-09042025_050920.xml · derivative · entry 4

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 96,657

Underlying: Common Stock · 24,986 shares

Expires 2029-02-20

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: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 28, 2025.

F5 · price: Granted as compensation for services.

F4 · derivative.exercise_date: The stock options have fully vested and are immediately exercisable.

Read SEC document
September 02, 2025 Filed Sep 4, 2025 21:00 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 15,717 $24.97 $392,453.49
Disclosure

SEC source: 0001415889-25-023709 · form4-09042025_050920.xml · nonDerivative · entry 3

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 346,393

F1 · kind: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 28, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.78 to $25.05, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4.

Read SEC document
September 02, 2025 Filed Sep 4, 2025 21:00 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 9,269 $24.22 $224,495.18
Disclosure

SEC source: 0001415889-25-023709 · form4-09042025_050920.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 362,110

F1 · kind: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 28, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.74 to $24.66, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4.

Read SEC document
September 02, 2025 Filed Sep 4, 2025 21:00 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionCommon Stock 24,986 $4.92 $122,931.12
Disclosure

SEC source: 0001415889-25-023709 · form4-09042025_050920.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 371,379

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: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 28, 2025.

Read SEC document
August 19, 2025 Filed Aug 20, 2025 20:30 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 10,579 $23.47 $248,289.13
Disclosure

SEC source: 0001415889-25-022450 · form4-08202025_040810.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 346,393

F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.18 to $24.10, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4.

Read SEC document
August 18, 2025 Filed Aug 20, 2025 20:30 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 9,700 $23.85 $231,345.00
Disclosure

SEC source: 0001415889-25-022450 · form4-08202025_040810.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 356,972

F1 · kind: These shares were sold to cover the Reporting Person's tax obligation resulting from the settlement of vested Restricted Stock Units. The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by sell to cover transactions and does not represent a discretionary transaction by the Reporting Person.

Read SEC document
July 03, 2025 Filed Jul 8, 2025 21:20 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 8,327 $0.00 Strike: $4.92 $0.00
Disclosure

SEC source: 0001415889-25-019534 · form4-07082025_090715.xml · derivative · entry 5

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 121,643

Underlying: Common Stock · 8,327 shares

Expires 2029-02-20

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: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.

F3 · price: Granted as compensation for services.

F2 · derivative.exercise_date: The stock options have fully vested and are immediately exercisable.

Read SEC document
July 03, 2025 Filed Jul 8, 2025 21:20 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 2 $0.00 Strike: $1.97 $0.00
Disclosure

SEC source: 0001415889-25-019534 · form4-07082025_090715.xml · derivative · entry 4

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2 shares

Expires 2028-03-15

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

F1 · kind: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.

F3 · price: Granted as compensation for services.

F2 · derivative.exercise_date: The stock options have fully vested and are immediately exercisable.

Read SEC document
July 03, 2025 Filed Jul 8, 2025 21:20 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 42,584 $25.00 $1,064,600.00
Disclosure

SEC source: 0001415889-25-019534 · form4-07082025_090715.xml · nonDerivative · entry 3

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 366,672

F1 · kind: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.

Read SEC document
July 03, 2025 Filed Jul 8, 2025 21:20 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionCommon Stock 8,327 $4.92 $40,968.84
Disclosure

SEC source: 0001415889-25-019534 · form4-07082025_090715.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 409,256

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: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.

Read SEC document
July 03, 2025 Filed Jul 8, 2025 21:20 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionCommon Stock 2 $1.97 $3.94
Disclosure

SEC source: 0001415889-25-019534 · form4-07082025_090715.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 400,929

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: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.

Read SEC document
June 24, 2025 Filed Jun 26, 2025 21:24 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 8,329 $0.00 Strike: $1.97 $0.00
Disclosure

SEC source: 0001415889-25-018291 · form4-06262025_090648.xml · derivative · entry 3

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2

Underlying: Common Stock · 8,329 shares

Expires 2028-03-15

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

F1 · kind: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.

F3 · price: Granted as compensation for services.

F2 · derivative.exercise_date: The stock options have fully vested and are immediately exercisable.

Read SEC document
June 24, 2025 Filed Jun 26, 2025 21:24 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 44,519 $20.00 $890,380.00
Disclosure

SEC source: 0001415889-25-018291 · form4-06262025_090648.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 400,927

F1 · kind: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.

Read SEC document
June 24, 2025 Filed Jun 26, 2025 21:24 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionCommon Stock 8,329 $1.97 $16,408.13
Disclosure

SEC source: 0001415889-25-018291 · form4-06262025_090648.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 445,446

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: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.

Read SEC document
June 06, 2025 Filed Jun 6, 2025 21:57 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 8,328 $0.00 Strike: $1.97 $0.00
Disclosure

SEC source: 0001415889-25-016035 · form4-06062025_090623.xml · derivative · entry 3

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,331

Underlying: Common Stock · 8,328 shares

Expires 2028-03-15

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

F1 · kind: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.

F3 · price: Granted as compensation for services.

F2 · derivative.exercise_date: The stock options have fully vested and are immediately exercisable.

Read SEC document
June 06, 2025 Filed Jun 6, 2025 21:57 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 8,328 $17.70 $147,405.60
Disclosure

SEC source: 0001415889-25-016035 · form4-06062025_090623.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 437,117

F1 · kind: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.

Read SEC document
June 06, 2025 Filed Jun 6, 2025 21:57 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionCommon Stock 8,328 $1.97 $16,406.16
Disclosure

SEC source: 0001415889-25-016035 · form4-06062025_090623.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 445,445

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: This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.

Read SEC document
May 20, 2025 Filed May 22, 2025 20:59 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 8,328 $0.00 Strike: $1.97 $0.00
Disclosure

SEC source: 0001415889-25-014183 · form4-05222025_080538.xml · derivative · entry 3

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,659

Underlying: Common Stock · 8,328 shares

Expires 2028-03-15

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

F1 · kind: The reported transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 26, 2024.

F3 · price: Granted as compensation for services.

F2 · derivative.exercise_date: The stock options have fully vested and are immediately exercisable.

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May 20, 2025 Filed May 22, 2025 20:59 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 8,328 $17.00 $141,576.00
Disclosure

SEC source: 0001415889-25-014183 · form4-05222025_080538.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 437,117

F1 · kind: The reported transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 26, 2024.

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May 20, 2025 Filed May 22, 2025 20:59 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionCommon Stock 8,328 $1.97 $16,406.16
Disclosure

SEC source: 0001415889-25-014183 · form4-05222025_080538.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 445,445

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: The reported transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 26, 2024.

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May 16, 2025 Filed May 16, 2025 21:40 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 11,366 $15.73 $178,787.18
Disclosure

SEC source: 0001415889-25-013474 · form4-05162025_050513.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 437,117

F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 26, 2024.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.61 to $15.86, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4.

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May 15, 2025 Filed May 16, 2025 21:40 UTC MAGNITE, INC. MGNI · Entity 2049 Tax withholdingCommon Stock 9,903 $15.88 $157,259.64
Disclosure

SEC source: 0001415889-25-013474 · form4-05162025_050513.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 448,483

F1 · kind: Represents the non-discretionary forfeiture 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.

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March 03, 2025 Filed Mar 5, 2025 22:24 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 15,499 $15.75 $244,109.25
Disclosure

SEC source: 0001415889-25-007008 · form4-03052025_100313.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 458,386

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 26, 2024.

F2 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $15.50 to $16.09 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.

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February 15, 2025 Filed Feb 19, 2025 21:22 UTC MAGNITE, INC. MGNI · Entity 2049 Tax withholdingCommon Stock 21,975 $20.00 $439,500.00
Disclosure

SEC source: 0001415889-25-004611 · form4-02192025_090250.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 473,885

F1 · kind: Represents the non-discretionary forfeiture 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.

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January 09, 2025 Filed Jan 13, 2025 22:36 UTC MAGNITE, INC. MGNI · Entity 2049 GrantPerformance Stock Units · Derivative 25,083 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-001393 · form4-01132025_100125.xml · derivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,083

Underlying: Common Stock · 25,083 shares

Expires not disclosed

F3 · 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: Equity grant under the Company's Amended and Restated 2014 Equity Incentive Plan.

F4 · derivative.exercise_date: The PSUs will generally vest on the three-year anniversary of the grant date of the award subject to the Reporting Person's continued service through such date. The number of shares vested will be determined based on the Issuer's total stockholder return ("TSR") relative to the TSRs of the companies in the Russell 2000 index for the three year-period beginning January 1, 2025, as well as certain interim measurements based on relative TSR for the one-year and two-year periods beginning on January 1, 2025. 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.

F4 · derivative.expiration_date: The PSUs will generally vest on the three-year anniversary of the grant date of the award subject to the Reporting Person's continued service through such date. The number of shares vested will be determined based on the Issuer's total stockholder return ("TSR") relative to the TSRs of the companies in the Russell 2000 index for the three year-period beginning January 1, 2025, as well as certain interim measurements based on relative TSR for the one-year and two-year periods beginning on January 1, 2025. 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.

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January 09, 2025 Filed Jan 13, 2025 22:36 UTC MAGNITE, INC. MGNI · Entity 2049 GrantCommon Stock 74,513 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-001393 · form4-01132025_100125.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 495,860

F1 · shares: Represents restricted stock units that vest as follows: 20,181 on February 15, 2026, 4,657 on each May 15, August 15, November 15, and February 15 thereafter until November 15, 2028 and 3,105 on February 15, 2029, subject to continued service to the Issuer through each vesting date. This equity grant may be subject to accelerated vesting in the event the Reporting Person's employment is terminated under certain circumstances.

F2 · price: Equity grant under the Company's Amended and Restated 2014 Equity Incentive Plan.

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November 22, 2024 Filed Nov 26, 2024 21:07 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 8,328 $0.00 Strike: $1.97 $0.00
Disclosure

SEC source: 0001415889-24-027701 · form4-11262024_091159.xml · derivative · entry 3

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 24,987

Underlying: Common Stock · 8,328 shares

Expires 2028-03-15

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

F1 · kind: The reported transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 14, 2024.

F3 · price: Granted as compensation for services.

F2 · derivative.exercise_date: The stock options have fully vested and are immediately exercisable.

Read SEC document
November 22, 2024 Filed Nov 26, 2024 21:07 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 8,328 $17.00 $141,576.00
Disclosure

SEC source: 0001415889-24-027701 · form4-11262024_091159.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 421,347

F1 · kind: The reported transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 14, 2024.

Read SEC document
November 22, 2024 Filed Nov 26, 2024 21:07 UTC MAGNITE, INC. MGNI · Entity 2049 Exercise / conversionCommon Stock 8,328 $1.97 $16,406.16
Disclosure

SEC source: 0001415889-24-027701 · form4-11262024_091159.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 429,675

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: The reported transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 14, 2024.

Read SEC document
November 18, 2024 Filed Nov 20, 2024 01:04 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 7,849 $15.60 $122,444.40
Disclosure

SEC source: 0001415889-24-027283 · form4-11202024_011140.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 421,347

F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 14, 2024.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.44 to $15.77 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.

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November 15, 2024 Filed Nov 20, 2024 01:04 UTC MAGNITE, INC. MGNI · Entity 2049 Tax withholdingCommon Stock 6,805 $15.85 $107,859.25
Disclosure

SEC source: 0001415889-24-027283 · form4-11202024_011140.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 429,196

F1 · kind: Represents the non-discretionary forfeiture 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.

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August 19, 2024 Filed Aug 21, 2024 21:19 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 7,910 $12.59 $99,586.90
Disclosure

SEC source: 0001415889-24-021835 · form4-08212024_090855.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 436,001

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 14, 2023.

F2 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $12.47 to $12.675 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.

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August 15, 2024 Filed Aug 16, 2024 21:13 UTC MAGNITE, INC. MGNI · Entity 2049 Tax withholdingCommon Stock 6,744 $12.51 $84,367.44
Disclosure

SEC source: 0001415889-24-021485 · form4-08162024_090824.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 443,911

F1 · kind: Represents the non-discretionary forfeiture 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.

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May 17, 2024 Filed May 21, 2024 20:56 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 10,597 $12.30 $130,343.10
Disclosure

SEC source: 0001415889-24-013975 · form4-05212024_080557.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 450,655

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 14, 2023.

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May 16, 2024 Filed May 17, 2024 21:00 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 23,453 $12.00 $281,436.00
Disclosure

SEC source: 0001415889-24-013561 · form4-05172024_050513.xml · nonDerivative · entry 2

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 461,252

F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 14, 2023.

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May 15, 2024 Filed May 17, 2024 21:00 UTC MAGNITE, INC. MGNI · Entity 2049 Tax withholdingCommon Stock 8,762 $9.80 $85,867.60
Disclosure

SEC source: 0001415889-24-013561 · form4-05172024_050513.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 484,705

F1 · kind: Represents the non-discretionary forfeiture 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.

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March 14, 2024 Filed Mar 15, 2024 20:52 UTC MAGNITE, INC. MGNI · Entity 2049 SaleCommon Stock 17,245 $11.32 $195,213.40
Disclosure

SEC source: 0001415889-24-008127 · form4-03152024_080343.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 493,467

F1 · kind: These sales were made pursuant to a Rule 10b5-1 Trading Plan adopted by the Reporting Person on December 14, 2023.

F2 · price: The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $11.10 to $11.60 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.

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February 15, 2024 Filed Feb 16, 2024 21:21 UTC MAGNITE, INC. MGNI · Entity 2049 Tax withholdingCommon Stock 21,971 $9.74 $213,997.54
Disclosure

SEC source: 0001415889-24-004125 · form4-02162024_090209.xml · nonDerivative · entry 1

Soroca Adam Lee · CIK 0001725125 · CHIEF PRODUCT OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 510,712

F1 · kind: Represents the non-discretionary forfeiture 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.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.