Welcome to our dedicated page for MAGNITE SEC filings (Ticker: MGNI), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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 (NASDAQ: MGNI) filed a Form 4 detailing transactions by Chief Product Officer Adam Soroca on 24 Jun 2025.
Soroca exercised 8,329 options at $1.97 and sold 44,519 common shares at $20.00, generating roughly $0.89 million and reducing his direct stake by about 10% to 400,927 shares.
The trades were executed under a Rule 10b5-1 plan adopted 7 Mar 2025. The options were fully vested and remain exercisable until 15 Mar 2028.
Magnite (NASDAQ:MGNI) filed a Form 4 reporting that director Paul Caine sold 5,000 common shares on 06/24/2025 at $20.00 per share, generating proceeds of roughly $100,000. The transaction was executed under a previously adopted Rule 10b5-1 trading plan dated 08/15/2024. After the sale, Caine’s direct beneficial ownership stands at 188,603 shares. No other securities or derivative positions were disclosed.
Magnite (NASDAQ: MGNI) filed a Form 4 showing CEO Michael G. Barrett sold 300,000 shares of common stock on 06/24/2025 at a weighted-average price of $20.01, realizing roughly $6.0 million.
The sale was executed under a Rule 10b5-1 plan adopted 03/12/2025. Barrett’s direct holdings fell from 656,708 to 356,708 shares, a reduction of about 46%.
No derivative trades were reported. While pre-scheduled, the magnitude of the disposition is material and could affect perceptions of insider confidence.
Magnite (NASDAQ:MGNI) filed a Form 4 disclosing that CFO David Day exercised 71,000 stock options at $5.28 and immediately sold the same number of common shares.
The trades, executed on 24 & 26 June 2025 under a pre-arranged Rule 10b5-1 plan, generated gross proceeds of roughly $1.45 million (35k @ $19.95, 36k @ $20.95). Following these transactions, Day’s direct ownership fell to 443,528 shares, a reduction of about 14% of his prior holdings.
The options stem from an April 2021 grant that vests monthly through April 2030. No additional derivatives were sold, and Day retains 44,784 unexercised options from the award. The sizeable sale may influence investor sentiment given the executive’s senior role.
Magnite, Inc. (MGNI) — Form 144 filing dated 06/26/2025
Officer David Day has filed a Form 144 indicating his intention to sell up to 36,000 common shares through Morgan Stanley Smith Barney on or about 06/26/2025. At the recent market price used in the filing, the shares are valued at $754,200. The company has 141,110,559 shares outstanding, so the proposed sale represents roughly 0.026 % of shares outstanding and poses no dilution risk to current shareholders.
Day adopted a Rule 10b5-1 trading plan on 03/13/2025, which pre-authorises trades and reduces the likelihood of trades being based on undisclosed information.
Form 144 also discloses that during the past three months Day sold:
- 38,146 shares on 06/18/2025 for $722,866.70
- 35,000 shares on 06/24/2025 for $698,250.00
Together with the new notice, the officer has sold or plans to sell 109,146 shares worth approximately $2.18 million, equal to about 0.077 % of shares outstanding.
Key Take-aways for investors
- The filing signals continued insider selling but under a 10b5-1 plan, indicating procedural compliance.
- The size of the sale is immaterial to the company’s capital structure but may be monitored as a sentiment indicator.