Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| MAGNITE, INC.MGNI · Entity 2049 | See Remarks | August 15, 2026 | August 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 August 15, 2026 · Filed August 18, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 293,060 |
Ending reported balance
After 2026-08-18 transaction · row 3
3 source rows · reconciled sequenceRow 1 · 2026-08-15 · Tax withholding · Disposed 11,715 · Balance 304,090 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 · 2026-08-17 · Sale · Disposed 8,271 · Balance 295,819 F2: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 10, 2025. F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.05 to $24.55, 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. Row 3 · 2026-08-18 · Sale · Disposed 2,759 · Balance 293,060 F2: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 10, 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: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 10, 2025.
F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.05 to $24.55, 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.
Transaction history
JSON APIPurchases/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 date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| August 18, 2026 Filed Aug 18, 2026 20:14 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 2,759 | $25.00 | $68,975.00 |
DisclosureSEC source: 0001865116-26-000009 · wk-form4_1787084076.xml · nonDerivative · entry 3 Buckley Sean Patrick · CIK 0001865116 · See Remarks 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 293,060 F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 10, 2025. Read SEC document |
| August 17, 2026 Filed Aug 18, 2026 20:14 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 8,271 | $24.31 | $201,068.01 |
DisclosureSEC source: 0001865116-26-000009 · wk-form4_1787084076.xml · nonDerivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · See Remarks 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 295,819 F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 10, 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 $24.05 to $24.55, 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 15, 2026 Filed Aug 18, 2026 20:14 UTC | MAGNITE, INC. MGNI · Entity 2049 | Tax withholdingCommon Stock | 11,715 | $24.73 | $289,711.95 |
DisclosureSEC source: 0001865116-26-000009 · wk-form4_1787084076.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · See Remarks 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 304,090 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 |
| August 06, 2026 Filed Aug 7, 2026 21:14 UTC | MAGNITE, INC. MGNI · Entity 2049 | Exercise / conversionStock Option (right to buy) · Derivative | 28,703 | $0.00 Strike: $13.90 | $0.00 |
DisclosureSEC source: 0001865116-26-000007 · wk-form4_1786137246.xml · derivative · entry 4 Buckley Sean Patrick · CIK 0001865116 · See Remarks 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 57,405 Underlying: Common Stock · 28,703 shares Expires 2032-02-01 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 10, 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 |
| August 06, 2026 Filed Aug 7, 2026 21:14 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 19,237 | $23.00 | $442,451.00 |
DisclosureSEC source: 0001865116-26-000007 · wk-form4_1786137246.xml · nonDerivative · entry 3 Buckley Sean Patrick · CIK 0001865116 · See Remarks 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 315,805 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 10, 2025. Read SEC document |
| August 06, 2026 Filed Aug 7, 2026 21:14 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 47,942 | $25.09 | $1,202,864.78 |
DisclosureSEC source: 0001865116-26-000007 · wk-form4_1786137246.xml · nonDerivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · See Remarks 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 335,042 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 10, 2025. Read SEC document |
| August 06, 2026 Filed Aug 7, 2026 21:14 UTC | MAGNITE, INC. MGNI · Entity 2049 | Exercise / conversionCommon Stock | 28,703 | $13.90 | $398,971.70 |
DisclosureSEC source: 0001865116-26-000007 · wk-form4_1786137246.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · See Remarks 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 382,984 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 transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 10, 2025. Read SEC document |
| July 07, 2026 Filed Jul 9, 2026 20:27 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 19,233 | $21.03 | $404,469.99 |
DisclosureSEC source: 0001193125-26-299731 · ownership.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · See Remarks 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 354,281 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 10, 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 $21.00 to $21.16, 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 |
| June 17, 2026 Filed Jun 18, 2026 23:51 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 19,233 | $19.00 | $365,427.00 |
DisclosureSEC source: 0001193125-26-276264 · ownership.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · See Remarks 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 373,514 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 10, 2025. Read SEC document |
| May 15, 2026 Filed May 19, 2026 21:00 UTC | MAGNITE, INC. MGNI · Entity 2049 | Tax withholdingCommon Stock | 12,019 | $12.82 | $154,083.58 |
DisclosureSEC source: 0001865116-26-000004 · form4-05192026_050507.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 392,747 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. F2 · balance_after: Includes 1,767 shares acquired by the Reporting Person on May 15, 2026 under the Issuer's Employee Stock Purchase Plan. Read SEC document |
| February 15, 2026 Filed Feb 18, 2026 21:30 UTC | MAGNITE, INC. MGNI · Entity 2049 | Tax withholdingCommon Stock | 26,942 | $11.70 | $315,221.40 |
DisclosureSEC source: 0001865116-26-000003 · form4-02182026_040210.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 402,999 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 | 64,125 | $0.00 | $0.00 |
DisclosureSEC source: 0001865116-26-000002 · form4-01122026_040104.xml · derivative · entry 3 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 64,125 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 64,125 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 64,125 shares. Read SEC document |
| January 09, 2026 Filed Jan 12, 2026 21:30 UTC | MAGNITE, INC. MGNI · Entity 2049 | Tax withholdingCommon Stock | 30,369 | $16.17 | $491,066.73 |
DisclosureSEC source: 0001865116-26-000002 · form4-01122026_040104.xml · nonDerivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 429,941 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 | 64,125 | $0.00 | $0.00 |
DisclosureSEC source: 0001865116-26-000002 · form4-01122026_040104.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 460,310 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 00:13 UTC | MAGNITE, INC. MGNI · Entity 2049 | GrantPerformance Stock Units · Derivative | 42,757 | $0.00 | $0.00 |
DisclosureSEC source: 0001865116-26-000001 · form4-01062026_120125.xml · derivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 42,757 Underlying: Common Stock · 42,757 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 00:13 UTC | MAGNITE, INC. MGNI · Entity 2049 | GrantCommon Stock | 127,273 | $0.00 | $0.00 |
DisclosureSEC source: 0001865116-26-000001 · form4-01062026_120125.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 396,185 F1 · shares: Represents restricted stock units that vest as follows: 34,470 on February 15, 2027, 7,955 on each May 15, August 15, November 15, and February 15 thereafter until November 15, 2029 and 5,298 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 |
| November 24, 2025 Filed Nov 26, 2025 21:10 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 2,213 | $14.50 | $32,088.50 |
DisclosureSEC source: 0001865116-25-000004 · form4-11262025_041110.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 268,912 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. Read SEC document |
| November 18, 2025 Filed Nov 19, 2025 00:41 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 4,426 | $13.36 | $59,131.36 |
DisclosureSEC source: 0001865116-25-000003 · form4-11192025_121103.xml · nonDerivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 271,125 F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.14 to $13.50, 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 00:41 UTC | MAGNITE, INC. MGNI · Entity 2049 | Tax withholdingCommon Stock | 11,642 | $14.15 | $164,734.30 |
DisclosureSEC source: 0001865116-25-000003 · form4-11192025_121103.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 275,551 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 09, 2025 Filed Sep 10, 2025 21:00 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 20,000 | $24.61 | $492,200.00 |
DisclosureSEC source: 0001415889-25-024106 · form4-09102025_050904.xml · nonDerivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 287,193 F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.51 to $25.07, 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 08, 2025 Filed Sep 10, 2025 21:00 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 20,000 | $25.56 | $511,200.00 |
DisclosureSEC source: 0001415889-25-024106 · form4-09102025_050904.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 307,193 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $25.50 to $25.69, 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 19, 2025 Filed Aug 20, 2025 20:30 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 9,315 | $23.42 | $218,157.30 |
DisclosureSEC source: 0001415889-25-022453 · form4-08202025_040816.xml · nonDerivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 327,193 F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. 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 | 10,886 | $23.85 | $259,631.10 |
DisclosureSEC source: 0001415889-25-022453 · form4-08202025_040816.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 336,508 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 |
| May 16, 2025 Filed May 16, 2025 21:40 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 9,692 | $15.73 | $152,455.16 |
DisclosureSEC source: 0001415889-25-013470 · form4-05162025_050505.xml · nonDerivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 347,394 F3 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. F4 · 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. Read SEC document |
| May 15, 2025 Filed May 16, 2025 21:40 UTC | MAGNITE, INC. MGNI · Entity 2049 | Tax withholdingCommon Stock | 15,049 | $15.88 | $238,978.12 |
DisclosureSEC source: 0001415889-25-013470 · form4-05162025_050505.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 357,086 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. F2 · balance_after: Includes 1,577 shares acquired by the Reporting Person on May 15, 2025 under the Issuer's Employee Stock Purchase Plan. Read SEC document |
| February 19, 2025 Filed Feb 21, 2025 21:57 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 10,527 | $19.13 | $201,381.51 |
DisclosureSEC source: 0001415889-25-005099 · form4-02212025_090252.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 370,558 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.02 to $19.31, 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 |
| February 15, 2025 Filed Feb 19, 2025 21:29 UTC | MAGNITE, INC. MGNI · Entity 2049 | Tax withholdingCommon Stock | 27,444 | $20.00 | $548,880.00 |
DisclosureSEC source: 0001415889-25-004629 · form4-02192025_090240.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 381,085 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 |
| February 07, 2025 Filed Feb 7, 2025 23:46 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 18,693 | $20.00 | $373,860.00 |
DisclosureSEC source: 0001415889-25-003399 · form4-02072025_110251.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 408,529 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. Read SEC document |
| January 09, 2025 Filed Jan 13, 2025 22:35 UTC | MAGNITE, INC. MGNI · Entity 2049 | GrantPerformance Stock Units · Derivative | 41,566 | $0.00 | $0.00 |
DisclosureSEC source: 0001415889-25-001392 · form4-01132025_100132.xml · derivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 41,566 Underlying: Common Stock · 41,566 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. Read SEC document |
| January 09, 2025 Filed Jan 13, 2025 22:35 UTC | MAGNITE, INC. MGNI · Entity 2049 | GrantCommon Stock | 123,479 | $0.00 | $0.00 |
DisclosureSEC source: 0001415889-25-001392 · form4-01132025_100132.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · President, Revenue 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 427,222 F1 · shares: Represents restricted stock units that vest as follows: 33,442 on February 15, 2026, 7,717 on each May 15, August 15, November 15, and February 15 thereafter until November 15, 2028 and 5,150 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. Read SEC document |
| November 18, 2024 Filed Nov 20, 2024 01:04 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 10,001 | $15.60 | $156,015.60 |
DisclosureSEC source: 0001415889-24-027282 · form4-11202024_011158.xml · nonDerivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 303,743 F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. 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. Read SEC document |
| November 15, 2024 Filed Nov 20, 2024 01:04 UTC | MAGNITE, INC. MGNI · Entity 2049 | Tax withholdingCommon Stock | 10,133 | $15.85 | $160,608.05 |
DisclosureSEC source: 0001415889-24-027282 · form4-11202024_011158.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 313,744 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 |
| November 11, 2024 Filed Nov 13, 2024 21:15 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 2,619 | $15.50 | $40,594.50 |
DisclosureSEC source: 0001415889-24-026693 · form4-11132024_041110.xml · nonDerivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 323,877 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. Read SEC document |
| November 11, 2024 Filed Nov 13, 2024 21:15 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 2,623 | $14.50 | $38,033.50 |
DisclosureSEC source: 0001415889-24-026693 · form4-11132024_041110.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 326,496 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. Read SEC document |
| August 20, 2024 Filed Aug 21, 2024 21:30 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 2,623 | $13.50 | $35,410.50 |
DisclosureSEC source: 0001415889-24-021836 · form4-08212024_090809.xml · nonDerivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 329,119 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. Read SEC document |
| August 19, 2024 Filed Aug 21, 2024 21:30 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 2,623 | $12.53 | $32,866.19 |
DisclosureSEC source: 0001415889-24-021836 · form4-08212024_090809.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 331,742 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. Read SEC document |
| August 15, 2024 Filed Aug 16, 2024 21:15 UTC | MAGNITE, INC. MGNI · Entity 2049 | Tax withholdingCommon Stock | 9,646 | $12.51 | $120,671.46 |
DisclosureSEC source: 0001415889-24-021488 · form4-08162024_090859.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 334,365 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 |
| July 16, 2024 Filed Jul 17, 2024 20:23 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 19,604 | $15.50 | $303,862.00 |
DisclosureSEC source: 0001415889-24-019671 · form4-07172024_080729.xml · nonDerivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 344,011 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. Read SEC document |
| July 15, 2024 Filed Jul 17, 2024 20:23 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 19,607 | $14.50 | $284,301.50 |
DisclosureSEC source: 0001415889-24-019671 · form4-07172024_080729.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 363,615 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. Read SEC document |
| June 05, 2024 Filed Jun 7, 2024 20:17 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 21,653 | $13.50 | $292,315.50 |
DisclosureSEC source: 0001415889-24-015963 · form4-06072024_080611.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 383,222 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. Read SEC document |
| May 24, 2024 Filed May 29, 2024 20:33 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 2,682 | $12.50 | $33,525.00 |
DisclosureSEC source: 0001415889-24-014763 · form4-05292024_080538.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 404,875 F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. Read SEC document |
| May 16, 2024 Filed May 17, 2024 21:00 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 16,925 | $12.50 | $211,562.50 |
DisclosureSEC source: 0001415889-24-013566 · form4-05172024_050540.xml · nonDerivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 407,557 F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023. F3 · balance_after: Includes 3,272 shares acquired by the Reporting Person on May 15, 2024 under the Issuer's Employee Stock Purchase Plan. Read SEC document |
| May 15, 2024 Filed May 17, 2024 21:00 UTC | MAGNITE, INC. MGNI · Entity 2049 | Tax withholdingCommon Stock | 9,407 | $9.80 | $92,188.60 |
DisclosureSEC source: 0001415889-24-013566 · form4-05172024_050540.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 421,210 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 |
| February 15, 2024 Filed Feb 16, 2024 21:28 UTC | MAGNITE, INC. MGNI · Entity 2049 | Tax withholdingCommon Stock | 24,110 | $9.74 | $234,831.40 |
DisclosureSEC source: 0001415889-24-004138 · form4-02162024_090231.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · CHIEF REVENUE OFFICER 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 430,617 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 02, 2024 Filed Jan 4, 2024 22:04 UTC | MAGNITE, INC. MGNI · Entity 2049 | GrantPerformance Stock Units · Derivative | 50,752 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-24-000843 · doc4.xml · derivative · entry 2 Buckley Sean Patrick · CIK 0001865116 · Chief Revenue Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 50,752 Underlying: Common Stock · 50,752 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, 2024, as well as certain interim measurements based on relative TSR for the one-year and two-year periods beginning on January 1, 2024. 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, 2024, as well as certain interim measurements based on relative TSR for the one-year and two-year periods beginning on January 1, 2024. 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 02, 2024 Filed Jan 4, 2024 22:04 UTC | MAGNITE, INC. MGNI · Entity 2049 | GrantCommon Stock | 142,276 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-24-000843 · doc4.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · Chief Revenue Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 454,727 F1 · shares: Represents restricted stock units that vest as follows: 38,533 on February 15, 2025, 8,892 on each May 15, August 15, November 15, and February 15 thereafter until November 15, 2027 and 5,931 on February 15, 2028, 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 |
| November 15, 2023 Filed Nov 17, 2023 21:18 UTC | MAGNITE, INC. MGNI · Entity 2049 | Tax withholdingCommon Stock | 5,078 | $7.89 | $40,065.42 |
DisclosureSEC source: 0001209191-23-055747 · doc4.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · Chief Revenue Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 312,451 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 |
| August 16, 2023 Filed Aug 18, 2023 20:34 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 5,273 | $8.31 | $43,818.63 |
DisclosureSEC source: 0001209191-23-046561 · doc4.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · Chief Revenue Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 317,529 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. Read SEC document |
| June 02, 2023 Filed Jun 6, 2023 21:34 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 12,219 | $12.99 | $158,724.81 |
DisclosureSEC source: 0001209191-23-034826 · doc4.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · Chief Revenue Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 322,802 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. Read SEC document |
| May 16, 2023 Filed May 18, 2023 23:57 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 5,640 | $10.88 | $61,363.20 |
DisclosureSEC source: 0001209191-23-030822 · doc4.xml · nonDerivative · entry 1 Buckley Sean Patrick · CIK 0001865116 · Chief Revenue Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 335,021 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 · balance_after: Includes 4,456 shares acquired by the Reporting Person on May 15, 2023 under the Issuer's employee stock purchase plan. 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.