Every Form 4 that Magnite, Inc. (MGNI) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow MGNI and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full MGNI filings page.
MAGNITE, INC. CEO Michael G. Barrett reported a routine tax-related share forfeiture. On May 15, 2026, 10,404 shares of common stock were disposed of at an indicated value of $12.82 per share to satisfy tax withholding obligations tied to vesting restricted stock units.
The filing notes this was a non-discretionary forfeiture mandated by the company’s arrangement, not an open-market sale. After this transaction, Barrett directly holds 403,074 shares of Magnite common stock, which includes 1,316 shares acquired the same day under the company’s Employee Stock Purchase Plan.
MAGNITE, INC. President, Revenue Sean Patrick Buckley reported a routine share disposition related to tax withholding. On the vesting of restricted stock units, 12,019 shares of common stock were forfeited at a value of $12.82 per share to satisfy tax obligations under a mandatory arrangement. After this non-discretionary forfeiture, Buckley directly holds 392,747 shares, which include 1,767 shares acquired on May 15, 2026 under the company’s Employee Stock Purchase Plan.
Magnite, Inc. President of Operations Katie Seitz Evans reported a routine tax-related share disposition. On May 15, 2026, 11,204 shares of common stock were forfeited at $12.82 per share to cover tax withholding obligations tied to vesting restricted stock units. After this non-discretionary forfeiture, she directly holds 496,840 shares of Magnite common stock.
Magnite, Inc.’s chief financial officer David Day reported a routine share disposition tied to taxes, not an open-market trade. On the vesting of restricted stock units, 14,170 shares of common stock were automatically forfeited at a value of $12.82 per share to cover tax withholding obligations mandated by the company. After this non-discretionary tax-withholding event, Day directly holds 493,289 shares of Magnite common stock.
MAGNITE, INC. chief accounting officer Brian Gephart reported a routine share disposition tied to taxes. On the vesting of restricted stock units, 3,789 shares of common stock were forfeited at an indicated value of $12.82 per share to cover mandated tax withholding obligations. This non-discretionary forfeiture was executed under an arrangement required by the company, rather than as an open-market sale. Following the transaction, Gephart directly holds 118,596 shares of Magnite common stock.
Magnite, Inc.’s chief legal officer, Aaron Saltz, reported a non-discretionary forfeiture of 5,627 shares of common stock on May 15, 2026. These shares were withheld at $12.82 per share to cover tax obligations tied to vesting restricted stock units. After this tax-withholding disposition, he directly holds 270,016 shares of Magnite common stock.
Magnite, Inc. chief technology officer David Buonasera had 8,335 common shares withheld at $12.82 per share to cover tax obligations from vesting restricted stock units. After this non-discretionary forfeiture, he directly holds 294,193 shares, which include 433 shares acquired under the company’s Employee Stock Purchase Plan.
Magnite chief product officer Adam Lee Soroca reported selling 21,529 shares of common stock at $12.00 per share in an open‑market transaction. An additional 18,933 shares at $11.70 per share were disposed of to satisfy tax withholding tied to restricted stock unit vesting. After these transactions, he directly held 388,425 shares of Magnite common stock. The open‑market sale was executed under a Rule 10b5‑1 trading plan adopted by Soroca on August 18, 2025.
Magnite, Inc.’s Chief Technology Officer David Buonasera reported a non-discretionary share forfeiture related to equity compensation. On February 15, 2026, 17,137 shares of common stock were surrendered at $11.70 per share to cover tax withholding obligations from vesting restricted stock units. This was a mandated arrangement by the company, not an open-market sale. After this tax-withholding disposition, Buonasera beneficially owned 302,095 shares of Magnite common stock.
Magnite, Inc. CEO Michael G. Barrett reported a tax-related share disposition. On the vesting of restricted stock units, 23,549 shares of common stock were non-discretionarily forfeited at $11.70 per share to cover withholding taxes. After this tax-withholding transaction, he directly holds 412,162 common shares.
Magnite, Inc. Chief Accounting Officer Brian Gephart reported a tax-related share transaction involving company common stock. On the reported date, 6,149 shares were forfeited at $11.70 per share to satisfy withholding taxes tied to the vesting of restricted stock units, under a non-discretionary arrangement mandated by Magnite. Following this tax-withholding disposition, Gephart’s directly held stake stands at 122,385 common shares.
MAGNITE, INC. Chief Financial Officer David Day reported a tax-related share disposition. On February 15, 2026, 30,617 shares of common stock were forfeited at $11.70 per share to cover withholding taxes on vesting restricted stock units, a non-discretionary transaction, leaving him with 507,459 shares directly owned.
MAGNITE, INC. President, Operations Katie Seitz Evans reported a non-discretionary forfeiture of 27,428 shares of common stock at $11.70 per share. The shares were withheld by the company to cover tax obligations arising from the vesting of restricted stock units. After this tax-withholding disposition, she holds 508,044 shares directly.
MAGNITE, INC. chief legal officer Aaron Salt reported a tax-withholding disposition of 12,761 shares of common stock. These shares were non-discretionarily forfeited to the company at $11.70 per share to cover tax obligations arising from the vesting of restricted stock units, rather than being sold on the open market. After this withholding event, Salt directly holds 275,643 shares of Magnite common stock.
MAGNITE, INC. President, Revenue Sean Patrick Buckley reported a disposition of 26,942 shares of common stock at $11.70 per share. The shares were non-discretionarily forfeited to cover tax withholding obligations tied to vested restricted stock units. After this tax-withholding disposition, Buckley directly held 402,999 common shares.
Magnite, Inc.'s chief financial officer David Day reported the vesting of performance-based stock units and related tax withholding. On January 9, 2026, he acquired 72,675 shares of common stock at $0 per share upon the vesting of performance stock units granted under Magnite's Amended and Restated 2014 Equity Incentive Plan. The number of units that vested was based on the company achieving 126.35% of its performance goal over a three-year total stockholder return period relative to the Russell 2000 index.
To cover tax withholding obligations from this vesting, 35,169 shares of common stock were automatically forfeited at a price of $16.17 per share pursuant to an arrangement mandated by the company, rather than an open-market sale decision by the executive. After these transactions, Day directly beneficially owned 538,076 shares of Magnite common stock.
Magnite, Inc. chief product officer Adam Lee Soroca reported the vesting and settlement of performance stock units into common shares. On January 9, 2026, 51,300 performance stock units converted into an equal number of common shares at $0 exercise price under the company’s Amended and Restated 2014 Equity Incentive Plan, following achievement of 126.35% of the target based on a three-year total stockholder return test versus Russell 2000 companies. To cover tax withholding on this vesting, 25,330 common shares were automatically forfeited at a price of $16.17 per share. After these transactions, Soroca directly owned 428,887 shares of Magnite common stock.
Magnite, Inc. reported an equity vesting event for its Chief Technology Officer, David Buonasera. On January 9, 2026, 22,935 performance stock units (PSUs) granted under the company’s Amended and Restated 2014 Equity Incentive Plan converted into the same number of common shares at an exercise price of $0.
The PSUs vested based on Magnite’s total stockholder return over a three-year period starting January 1, 2023, compared with companies in the Russell 2000 index. The award could vest from 0% to 150% of the target amount, and the compensation committee determined achievement of 126.35%, resulting in 22,935 shares vesting.
To cover tax withholding obligations tied to this vesting, 12,330 shares of common stock were automatically forfeited at a price of $16.17 per share. After these transactions, Buonasera directly held 319,232 shares of Magnite common stock.
Magnite, Inc. chief legal officer Aaron Saltz reported the vesting of performance stock units and related share withholding for taxes. On January 9, 2026, 28,215 performance stock units converted into 28,215 shares of Magnite common stock at an exercise price of $0 under the company’s Amended and Restated 2014 Equity Incentive Plan. The award’s vesting was based on Magnite’s total stockholder return over a three-year period relative to companies in the Russell 2000 index, with performance certified at 126.35% of target. To satisfy tax withholding obligations tied to this vesting, 15,026 shares of common stock were forfeited at a price of $16.17 per share under an issuer‑mandated arrangement. Following these transactions, Saltz directly held 288,404 shares of Magnite common stock.
Magnite, Inc. executive Sean Patrick Buckley, President, Revenue, reported the vesting of performance-based equity and related tax share withholding. On January 9, 2026, 64,125 performance stock units were converted into an equal number of shares of Magnite common stock at an exercise price of $0 under the company’s Amended and Restated 2014 Equity Incentive Plan. The award’s vesting was based on Magnite’s total stockholder return over a three-year period starting January 1, 2023, relative to Russell 2000 companies, with achievement determined at 126.35%, resulting in the 64,125 vested shares. To cover tax withholding tied to this vesting, 30,369 shares of common stock were forfeited at a price of $16.17 per share. Following these transactions, Buckley directly holds 429,941 shares of Magnite common stock.
Magnite, Inc. President, Operations Katie Seitz Evans reported performance-based stock vesting and related tax share withholding. On January 9, 2026, 51,300 performance stock units converted into 51,300 shares of common stock at $0 under the company’s Amended and Restated 2014 Equity Incentive Plan, based on 126.35% total shareholder return achievement over a three-year period versus the Russell 2000 index. To cover tax withholding on this vesting, 26,836 shares of common stock were automatically forfeited at $16.17 per share under an issuer-mandated arrangement. After these transactions, Evans directly held 535,472 shares of Magnite common stock.
Magnite, Inc. reported insider equity activity by CEO and director Michael G. Barrett. On January 9, 2026, 213,750 performance stock units vested and were converted into an equal number of shares of Magnite common stock at an exercise price of $0 under the company’s Amended and Restated 2014 Equity Incentive Plan. On the same date, 109,742 shares of common stock were automatically forfeited at $16.17 per share to satisfy tax withholding obligations tied to this vesting. After these transactions, Barrett directly held 435,711 shares of Magnite common stock.
Magnite, Inc. (MGNI) reported an insider stock sale by a senior executive. The company’s President, Revenue filed a Form 4 disclosing that on 11/24/2025, they sold 2,213 shares of Magnite common stock at a price of $14.50 per share in an open-market transaction.
After this sale, the executive beneficially owns 268,912 shares of Magnite common stock in direct ownership. The filing notes that the transaction was executed under a pre-arranged Rule 10b5-1 trading plan adopted on 11/24/2023, which is designed to allow insiders to trade shares according to a preset schedule.
Magnite, Inc. director reports stock sale
A director of Magnite, Inc. (MGNI) reported selling 12,500 shares of common stock on 11/21/2025. The sale is coded as an open-market or private sale, with a weighted average price of $14.22 per share, based on multiple trades executed between $14.22 and $14.23. After this transaction, the director beneficially owns 53,917 shares of Magnite common stock in direct ownership form.
The filing notes that detailed trade-by-trade pricing information within the reported range is available upon request from the company, any security holder, or the SEC staff.
Magnite, Inc. insider transaction: A company officer, identified as President, Revenue, reported two transactions in Magnite, Inc. common stock. On 11/15/2025, 11,642 shares were forfeited at $14.15 per share to cover tax withholding obligations tied to the vesting of restricted stock units, as required by the company. On 11/18/2025, 4,426 shares were sold at a weighted average price of $13.36 per share under a pre‑arranged Rule 10b5‑1 trading plan adopted on November 24, 2023. After these transactions, the officer beneficially owned 271,125 shares of Magnite common stock directly.
Magnite, Inc. reported insider transactions by its Chief Product Officer. On 11/15/2025, 9,422 shares of common stock were forfeited at $14.15 per share to cover tax withholding tied to the vesting of restricted stock units, under an arrangement mandated by the company. After this, the officer held 336,971 shares.
On 11/18/2025, the officer sold 10,857 shares of Magnite common stock at a weighted average price of $13.23 per share, with individual sale prices ranging from $13.13 to $13.30. This sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on May 28, 2025. Following the reported sale, the officer directly owned 326,114 shares of Magnite common stock.
Magnite, Inc. (MGNI) reported a routine insider share transaction by its President, Operations. On 11/15/2025, the executive had 10,354 shares of common stock forfeited at a reported price of $14.15 per share. This was a non-discretionary forfeiture required by the company to cover tax withholding obligations tied to the vesting of restricted stock units, meaning the shares were withheld rather than sold on the open market. Following this tax-related forfeiture, the officer beneficially owned 383,735 shares of Magnite common stock in direct form.
Magnite, Inc. (MGNI) reported an insider equity transaction involving its chief technology officer. On 11/15/2025, 7,129 shares of common stock were forfeited in a non-discretionary transaction to cover tax withholding obligations tied to the vesting of restricted stock units. After this tax-related forfeiture, the reporting person beneficially owned 231,824 shares of Magnite common stock. This total includes 324 shares acquired on November 15, 2025 under the company’s Employee Stock Purchase Plan.
Magnite, Inc. (MGNI) reported an insider equity transaction by its Chief Accounting Officer on 11/15/2025. The filing shows a disposition of 3,549 shares of common stock at $14.15 per share, coded as transaction type "F," which indicates shares were withheld by the company to cover tax obligations. These shares were forfeited in connection with the vesting of restricted stock units under a non-discretionary, issuer-mandated arrangement. Following this tax withholding transaction, the reporting officer beneficially owns 89,349 shares of Magnite common stock directly.
Magnite, Inc. insider Aaron Saltz, Chief Legal Officer, reported an administrative share transaction related to equity compensation. On 11/15/2025, 5,695 shares of Magnite common stock were forfeited at a price of $14.15 per share to cover tax withholding obligations arising from the vesting of restricted stock units. After this tax-related forfeiture, Saltz beneficially owned 209,384 shares of Magnite common stock directly. The transaction was characterized as a non-discretionary forfeiture mandated by the company’s arrangement for handling tax obligations on vesting awards.
Magnite, Inc. reported an insider equity transaction by its CEO and director. On 11/15/2025, the reporting person disposed of 12,198 shares of Magnite common stock at a price of $14.15 per share. This disposition is identified with transaction code "F," which indicates that the shares were withheld by the company to satisfy tax withholding obligations.
After this tax-related forfeiture tied to the vesting of restricted stock units, the reporting person beneficially owns 237,659 shares of Magnite common stock in direct ownership. The filing notes that the forfeiture was non-discretionary and mandated by Magnite under an arrangement designed to cover the reporting person’s tax liabilities arising from equity compensation.
Magnite, Inc. reported an insider share transaction by its Chief Financial Officer. On 11/15/2025, the CFO disposed of 13,197 shares of common stock at a price of $14.15 per share. The company states this was a non-discretionary forfeiture of shares mandated by Magnite to cover tax withholding obligations related to the vesting of restricted stock units, rather than an open-market sale initiated by the executive. After this tax-related transaction, the reporting person beneficially owns 368,909 shares of Magnite common stock directly.