Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| MAGNITE, INC.MGNI · Entity 2049 | Director | September 14, 2026 | September 16, 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 September 14, 2026 · Filed September 16, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 57,715 |
Ending reported balance
After 2026-09-14 transaction · row 2
2 source rows · reconciled sequenceRow 1 · 2026-09-14 · Exercise / conversion · Acquired 10,363 · Balance 68,078 Row 2 · 2026-09-14 · Sale · Disposed 10,363 · Balance 57,715 F1: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.75 to $23.7901, 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. |
| Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $5.17 · Expires 2027-05-23 | Direct | 0 |
Reported balance
After 2026-09-14 transaction · row 3
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 3 · 2026-09-14 · Exercise / conversion · Disposed 10,363 · Balance 0 F3: Granted as compensation for services. F2: The stock options have fully vested and are immediately exercisable. |
Filing footnotes · ownership attribution and instrument terms
F1: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.75 to $23.7901, 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.
F2: The stock options have fully vested and are immediately exercisable.
F3: Granted as compensation for services.
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 |
|---|---|---|---|---|---|---|
| September 14, 2026 Filed Sep 16, 2026 20:20 UTC | MAGNITE, INC. MGNI · Entity 2049 | Exercise / conversionStock Option (right to buy) · Derivative | 10,363 | $0.00 Strike: $5.17 | $0.00 |
DisclosureSEC source: 0001603808-26-000005 · wk-form4_1789590036.xml · derivative · entry 3 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 10,363 shares Expires 2027-05-23 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 · price: Granted as compensation for services. F2 · derivative.exercise_date: The stock options have fully vested and are immediately exercisable. Read SEC document |
| September 14, 2026 Filed Sep 16, 2026 20:20 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 10,363 | $23.76 | $246,224.88 |
DisclosureSEC source: 0001603808-26-000005 · wk-form4_1789590036.xml · nonDerivative · entry 2 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 57,715 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.75 to $23.7901, 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 14, 2026 Filed Sep 16, 2026 20:20 UTC | MAGNITE, INC. MGNI · Entity 2049 | Exercise / conversionCommon Stock | 10,363 | $5.17 | $53,576.71 |
DisclosureSEC source: 0001603808-26-000005 · wk-form4_1789590036.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 68,078 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. Read SEC document |
| June 08, 2026 Filed Jun 11, 2026 00:54 UTC | MAGNITE, INC. MGNI · Entity 2049 | GrantCommon Stock | 13,798 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-266375 · ownership.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 57,715 F1 · shares: Represents restricted stock units that vest in full on the earliest of (i) June 8, 2027, (ii) the date of the 2027 annual meeting of the Issuer's stockholders, or (iii) a change of control of the Issuer. F2 · price: Granted as compensation for services. Read SEC document |
| May 19, 2026 Filed May 21, 2026 21:00 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 10,000 | $13.33 | $133,300.00 |
DisclosureSEC source: 0001603808-26-000002 · form4-05212026_050519.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 43,917 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.32 to $13.355, 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 21, 2025 Filed Nov 21, 2025 21:59 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 12,500 | $14.22 | $177,750.00 |
DisclosureSEC source: 0001603808-25-000005 · form4-11212025_091155.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 53,917 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.22 to $14.23, 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 |
| June 10, 2025 Filed Jun 12, 2025 21:56 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 15,000 | $17.57 | $263,550.00 |
DisclosureSEC source: 0001415889-25-017035 · form4-06122025_090605.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 66,417 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.57 to $17.585, 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 |
| June 05, 2025 Filed Jun 6, 2025 21:47 UTC | MAGNITE, INC. MGNI · Entity 2049 | GrantCommon Stock | 10,766 | $0.00 | $0.00 |
DisclosureSEC source: 0001415889-25-016022 · form4-06062025_090625.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 81,417 F1 · shares: Represents restricted stock units that vest in full on the earliest of (i) June 5, 2026, (ii) the date of the 2026 annual meeting of the Issuer's stockholders, or (iii) a change of control of the Issuer. F2 · price: Granted as compensation for services. Read SEC document |
| November 20, 2024 Filed Nov 22, 2024 21:21 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 12,500 | $16.12 | $201,500.00 |
DisclosureSEC source: 0001415889-24-027515 · form4-11222024_091121.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 70,651 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.11 to $16.14, 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 |
| June 12, 2024 Filed Jun 13, 2024 20:15 UTC | MAGNITE, INC. MGNI · Entity 2049 | GrantCommon Stock | 14,061 | $0.00 | $0.00 |
DisclosureSEC source: 0001415889-24-016664 · form4-06132024_040604.xml · nonDerivative · entry 2 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 83,151 F2 · shares: Represents restricted stock units that vest in full on the earliest of (i) June 12, 2025, (ii) the date of the 2025 annual meeting of the Issuer's stockholders, or (iii) a change of control of the Issuer. F3 · price: Granted as compensation for services. Read SEC document |
| June 11, 2024 Filed Jun 13, 2024 20:15 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 25,000 | $13.04 | $326,000.00 |
DisclosureSEC source: 0001415889-24-016664 · form4-06132024_040604.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 69,090 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.01 to $13.10, 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. Read SEC document |
| August 22, 2023 Filed Aug 23, 2023 20:24 UTC | MAGNITE, INC. MGNI · Entity 2049 | SaleCommon Stock | 25,000 | $8.05 | $201,250.00 |
DisclosureSEC source: 0001209191-23-047058 · doc4.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 94,090 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.05 to $8.075, 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 ranges set forth in this footnote. Read SEC document |
| June 14, 2023 Filed Jun 16, 2023 20:28 UTC | MAGNITE, INC. MGNI · Entity 2049 | GrantCommon Stock | 13,743 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-23-037894 · doc4.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 119,090 F1 · shares: Represents restricted stock units that vest in full on the earliest of (i) June 14, 2024, (ii) the date of the 2024 annual meeting of the Issuer's stockholders, or (iii) a change of control of the Issuer. F2 · price: Granted as compensation for services. Read SEC document |
| June 07, 2022 Filed Jun 9, 2022 21:46 UTC | MAGNITE, INC. MGNI · Entity 2049 | GrantCommon Stock | 16,489 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-22-035520 · doc4.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 105,347 F1 · shares: Represents restricted stock units that vest in full on the earliest of (i) June 7, 2023, (ii) the date of the 2023 annual meeting of the Issuer's stockholders, or (iii) a change of control of the Issuer. F2 · price: Granted as compensation for services. Read SEC document |
| June 28, 2021 Filed Jun 30, 2021 21:38 UTC | MAGNITE, INC. MGNI · Entity 2049 | GrantCommon Stock | 3,936 | $0.00 | $0.00 |
DisclosureSEC source: 0001209191-21-044016 · doc4.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 88,858 F1 · shares: Represents restricted stock units that vest in full on the earliest of (i) June 28, 2022, (ii) the date of the 2022 annual meeting of the Issuer's stockholders, or (iii) a change of control of the Issuer. F2 · price: Granted as compensation for services. Read SEC document |
| July 08, 2020 Filed Jul 16, 2020 22:58 UTC | MAGNITE, INC. RUBI · Entity 2049 | GrantCommon Stock | 18,436 | $0.00 | $0.00 |
DisclosureSEC source: 0001595974-20-000112 · wf-form4_159494029258961.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 84,922 F1 · shares: Represents restricted stock units that vest in full on the earliest of (i) July 8, 2021, (ii) the date of the 2021 annual meeting of the Issuer's stockholders, or (iii) a change of control of the Issuer. F2 · price: Granted as compensation for services. Read SEC document |
| May 15, 2019 Filed May 17, 2019 22:00 UTC | MAGNITE, INC. RUBI · Entity 2049 | GrantCommon Stock | 19,562 | $0.00 | $0.00 |
DisclosureSEC source: 0001595974-19-000080 · wf-form4_155813038706055.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 66,486 F1 · shares: Represents restricted stock units that vest in full on the earliest of (i) May 15, 2020, (ii) the date of the 2020 annual meeting of the Issuer's stockholders, or (iii) a change of control of the Issuer. F2 · price: Granted as compensation for services. Read SEC document |
| August 15, 2018 Filed Aug 17, 2018 23:43 UTC | MAGNITE, INC. RUBI · Entity 2049 | GrantStock Option (right to buy) · Derivative | 9,429 | $0.00 Strike: $3.81 | $0.00 |
DisclosureSEC source: 0001595974-18-000090 · wf-form4_153454939882764.xml · derivative · entry 2 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 9,429 Underlying: Common Stock · 9,429 shares Expires 2028-08-15 F2 · price: Granted as compensation for services. F3 · derivative.exercise_date: The stock options vest in full on the earliest of (i) May 23, 2019, (ii) the date of the 2019 annual meeting of the Issuer's stockholders, or (iii) a change of control of the Issuer. Read SEC document |
| August 15, 2018 Filed Aug 17, 2018 23:43 UTC | MAGNITE, INC. RUBI · Entity 2049 | GrantCommon Stock | 7,292 | $0.00 | $0.00 |
DisclosureSEC source: 0001595974-18-000090 · wf-form4_153454939882764.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 46,924 F1 · shares: Represents restricted stock units that vest in full on the earliest of (i) May 23, 2019, (ii) the date of the 2019 annual meeting of the Issuer's stockholders, or (iii) a change of control of the Issuer. F2 · price: Granted as compensation for services. Read SEC document |
| May 23, 2017 Filed May 26, 2017 00:30 UTC | MAGNITE, INC. RUBI · Entity 2049 | GrantStock Option (right to buy) · Derivative | 10,363 | $0.00 Strike: $5.17 | $0.00 |
DisclosureSEC source: 0001595974-17-000037 · wf-form4_149575861312047.xml · derivative · entry 2 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 10,363 Underlying: Common Stock · 10,363 shares Expires 2027-05-23 F2 · price: Granted as compensation for services. F3 · derivative.exercise_date: The stock options vest in full on the earliest of (i) May 23, 2018, (ii) the date of the next Annual Meeting of the Issuer's stockholders, or (iii) a change of control of the Issuer. Read SEC document |
| May 23, 2017 Filed May 26, 2017 00:30 UTC | MAGNITE, INC. RUBI · Entity 2049 | GrantCommon Stock | 7,292 | $0.00 | $0.00 |
DisclosureSEC source: 0001595974-17-000037 · wf-form4_149575861312047.xml · nonDerivative · entry 1 Spillane Robert F · CIK 0001603808 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 39,632 F1 · shares: Represents restricted stock units that vest in full on the earliest of (i) May 23, 2018, (ii) the date of the next Annual Meeting of the Issuer's stockholders, or (iii) a change of control of the Issuer. F2 · price: Granted as compensation for services. 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.