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. reported strong results for the quarter ended June 30, 2026, with revenue of $192.8 million, up 11% year-over-year. Contribution ex-TAC rose to $189.6 million, up 17%, including CTV contribution ex-TAC of $97.1 million, up 36%, and DV+ of $92.5 million, up 2%.
Net income was $19.4 million, or $0.13 per diluted share, compared with $11.1 million, or $0.08, a year earlier. Adjusted EBITDA increased to $70.6 million, up 30%, for a 37% Adjusted EBITDA margin. Non-GAAP earnings per share were $0.26, and operating cash flow was $57.4 million.
For Q3 2026, the company expects total Contribution ex-TAC between $188 million and $192 million. For full-year 2026, it raised guidance, targeting Contribution ex-TAC growth of 13%–14%, Adjusted EBITDA growth above 20%, an Adjusted EBITDA margin of at least 37%, and free cash flow growth in the high 40% range.
Magnite CEO Michael G. Barrett exercised employee stock options for 38,596 shares at $5.80 per share and sold 38,596 common shares at a weighted average price of $20.35 on July 15, 2026 under a Rule 10b5-1 plan adopted March 13, 2026. After these trades, he holds 403,074 common shares and 293,968 remaining stock options expiring March 17, 2027.
MGNI shareholder Michael G Barrett filed a notice to sell 38,596 shares of common stock, with an indicated value of $785,509.65, through Morgan Stanley Smith Barney LLC Executive Financial Services on or after July 15, 2026 on NASDAQ.
The shares are to be acquired from the issuer via a stock option exercise paid in cash on July 15, 2026. The filing also lists sales during the past three months, including 75,000, 100,000 and 178,596 shares of common stock on June 29, June 16 and June 15, 2026, respectively, for consideration of $1,462,500.00, $1,750,000.00 and $2,962,061.65.
Magnite, Inc. director Paul Caine reported an open-market sale of 5,000 shares of common stock on July 10, 2026 at a weighted average price of $20.64 per share, with individual trades between $20.31 and $21.25. The sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on August 20, 2025, and Caine now directly owns 162,401 shares of Magnite common stock.
Magnite, Inc. Chief Technology Officer David Buonasera reported an open-market sale of 1,224 shares of Common Stock at $21.00 per share. After this transaction, he directly holds 268,485 shares.
The sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on September 11, 2025, indicating it was scheduled in advance rather than timed opportunistically.
MAGNITE, INC. officer Sean Patrick Buckley reported an open-market sale of 19,233 shares of common stock on July 7, 2026. The shares were sold at a weighted average price of $21.03 per share, in multiple trades between $21.00 and $21.16.
After this transaction, Buckley directly holds 354,281 shares of Magnite common stock. The sale was carried out under a pre-arranged Rule 10b5-1 trading plan that Buckley adopted on September 10, 2025, indicating the trades were scheduled in advance.
MGNI insider sale reported: Sean Buckley reported the sale of 19,233 shares of common stock under a 10b5-1 plan on 06/17/2026, generating $365,427 in proceeds. The filing also lists 12,482 Restricted Stock Units (08/15/2023) and 6,751 Performance Stock Awards (01/01/2026).
MGNI submitted a Form 144 notice reporting proposed and recent sales of Common Stock by Adam L. Soroca through Morgan Stanley Smith Barney LLC. The filing lists securities vested under a Restricted Stock Vesting Under a Registered Plan dated 05/15/2022.
The excerpt includes a proposed sale on 07/01/2026 of 8,000 shares for $160,000.00 and multiple transactions in May–June 2026 (examples: 05/27/2026 18,225 shares for $250,477.11; 05/28/2026 42,756 shares for $603,084.95). The filing identifies the broker-dealer as Morgan Stanley Smith Barney LLC Executive Financial Services.
MGNI Form 144: This filing lists proposed and recent sales of Common Stock by David Buonasera. The excerpt shows multiple transactions dated 06/01/2026, 06/15/2026, 06/16/2026, 06/17/2026, and 07/01/2026, with reported share amounts and dollar values for each sale.
The filing also notes a block of Restricted Stock dated 11/15/2024 attributed to the issuer and identifies the broker-dealer as Morgan Stanley Smith Barney LLC. The excerpt is a notice of proposed sales under applicable resale rules.