Magnite, Inc. filings document the regulatory record of an operating ad technology company focused on sell-side programmatic advertising. Form 8-K reports furnish quarterly and annual results, including revenue, contribution ex-TAC, CTV and DV+ metrics, adjusted EBITDA, cash flow measures, outlook commentary and stock buyback disclosures.
The company’s proxy materials cover annual meeting matters, director elections, executive compensation and stockholder voting procedures. Other filings document executive transitions, material agreements, Regulation FD disclosures and risk-factor updates, including litigation and competitive risks tied to the digital advertising ecosystem.
Magnite, Inc. (MGNI) director Paul Caine sold 12,500 shares of common stock on October 12, 2026, at a weighted average price of $25.29 per share. The shares were sold in multiple transactions at prices ranging from $24.92 to $25.50. Caine directly held 124,901 shares after the sale, which was made under a Rule 10b5-1 trading plan adopted on August 20, 2025.
Magnite, Inc. (MGNI) completed its third repricing of the $358 million senior secured term loan and repriced its $175 million senior secured revolving credit facility on October 7, 2026. The term-loan margin decreased 50 basis points, to Term SOFR + 2.50% from Term SOFR + 3.00%. The revolving-facility margin decreased 100 basis points, to Term SOFR plus 2.50%–3.00% from Term SOFR plus 3.50%–4.00%.
Magnite said the term-loan repricing will yield approximately $1.8 million in annualized cash interest savings. The company described the new term-loan rate as a cumulative reduction of 250 basis points from the rate before the February 2024 refinancing. The term loan remains due in February 2031, and the revolving credit facility matures in February 2029; the company said the term-loan maturity did not change and other material terms remain substantially unchanged.
Magnite, Inc. (MGNI) Chief Accounting Officer Sullivan Haas received an award of 24,641 restricted stock units on October 1, 2026, under the Amended and Restated 2014 Equity Incentive Plan. His reported direct common-stock holdings following the transaction were 97,554 shares.
The award vests in installments: 6,674 shares on November 15, 2027; 1,540 shares on each February 15, May 15, August 15, and November 15 thereafter until August 15, 2030; and 1,027 shares on November 15, 2030. Vesting is subject to continued service through each vesting date. The grant may be subject to accelerated vesting if employment ends under certain circumstances.
Magnite, Inc. (MGNI) Chief Financial Officer Brian Gephart acquired 64,682 restricted stock units on October 1, 2026. His reported direct position following the transaction was 167,010 shares. The grant is under the Amended and Restated 2014 Equity Incentive Plan. Vesting is scheduled in installments from November 15, 2027, through November 15, 2030, subject to continued service through each vesting date.
Magnite, Inc. (MGNI) reports Chief Accounting Officer Haas Sullivan’s direct holding of 72,913 shares of common stock as of October 1, 2026. The reported amount includes 46,584 restricted stock units, which vest on scheduled dates through February 15, 2030, subject to continued employment.
Magnite, Inc. (MGNI) announced leadership changes in its finance organization. Effective October 1, 2026, the company is promoting Brian Gephart, its Chief Accounting Officer since June 2021, to Chief Financial Officer and principal financial officer, succeeding retiring CFO David Day. Gephart will oversee global finance, including corporate finance, accounting, reporting, investor relations, treasury, and tax. He will receive an equity award valued at $2.25 million, split between restricted stock units and performance stock units, plus enhanced severance protections. On the same date, Magnite is promoting Haas Sullivan, currently Vice President of Accounting, to Chief Accounting Officer and principal accounting officer, with a new RSU grant and his own severance and vesting acceleration agreement.
MAGNITE, INC. (MGNI) director Paul Caine reported selling 7,500 shares of common stock on September 17, 2026 at $26.50 per share in an open-market or private transaction. Following this sale, he directly holds 137,401 shares of MAGNITE common stock. The trade was effected pursuant to a Rule 10b5-1 trading plan adopted on August 20, 2025.
MAGNITE, INC. (MGNI) director Douglas S. Knopper sold Common Stock in an open-market transaction on September 17, 2026. He sold 37,337 shares at a weighted average price of $26.28 per share, with actual trade prices ranging from $26.00 to $26.50. Following this sale, he directly holds 51,136 shares of MAGNITE, INC. common stock. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted on December 12, 2025.
MAGNITE, INC. (MGNI) director Paul Caine filed a notice of proposed sale under Rule 144 for up to 20,000 shares of common stock through Morgan Stanley Smith Barney LLC. The shares were acquired upon vesting of restricted stock units between June 1, 2016 and June 1, 2018, and prior 10b5-1 plan sales over the past three months are also listed.
MAGNITE, INC. (MGNI) is the issuer for a planned resale of common stock disclosed by Douglas S. Knopper and Abigail L. Knopper, as trustees of the Knopper Joint Management Trust dated November 15, 2013, under Rule 144. The notice covers 37,337 shares of common stock, originally acquired as Restricted Stock Units granted on November 6, 2019 by the issuer. The proposed sale is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services, with an aggregate market value stated as $887,873.86 and trading on NASDAQ referenced as of September 17, 2026. The filing also lists Rule 10b5-1 sales of Magnite common stock during the prior three months for related accounts.