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. 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.
Morgan Stanley Smith Barney LLC Executive Financial Services submitted a Form 144 notice to sell 10,000 shares of Common Stock of the company (symbol MGNI). The filing lists restricted stock lots dated 06/12/2024 (7,166 shares) and 06/05/2025 (2,834 shares). The entry shows a filing-related date of 05/19/2026 and identifies NASDAQ as the trading market.
MGNI (Morgan Innovations) reported proposed insider sales via a Form 144 notice. The filing lists proposed sales of 21,529 shares with reported values of $257,486.84 (dated 02/19/2026) and $258,348.00 (dated 02/18/2026). The record also shows multiple restricted stock vesting entries under a registered plan (examples: 10,445 shares vesting 02/15/2023; 2,986 shares vesting 01/30/2025), described as "Services Rendered."
The filing is a notice of proposed resale activity by an affiliate/insider; it does not itself report completed open-market trades or indicate proceeds treatment beyond the reported per-line values.
Magnite, Inc. ownership update: Capital Research Global Investors reports beneficial ownership of 5,020,289 shares, representing 3.5% of Magnite's common stock as of 03/31/2026. The filer states sole voting and dispositive power over the same 5,020,289 shares. The amendment is signed by a Capital Research officer on 05/11/2026.
Magnite reported solid first-quarter 2026 growth led by connected TV (CTV). Revenue reached $164.4 million, up 6% year-over-year. Contribution ex-TAC was $160.9 million, up 10%, with CTV contribution ex-TAC of $82.3 million, up 30% and now just over half of the total. DV+ contribution ex-TAC was $78.6 million, down 5% year-over-year.
The company posted net income of $4.4 million, or $0.03 per diluted share, versus a $9.6 million loss a year ago. Adjusted EBITDA was $42.9 million, up 16%, with a 26.6% Adjusted EBITDA margin, and non-GAAP earnings per share were $0.13. Net cash used in operating activities was $120.8 million, and cash and equivalents declined to $184.6 million.
For Q2 2026, Magnite expects total contribution ex-TAC between $177 million and $181 million, including $90 million to $92 million from CTV. For full-year 2026, it reaffirms contribution ex-TAC growth of at least 11%, mid-teens Adjusted EBITDA growth, and raises its margin target to at least 35.5%, with free cash flow growth targeted in the mid-30% range.