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Magnite Inc SEC Filings

MGNI NASDAQ

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.

Programmatic advertising can feel like alphabet soup, and Magnite’s filings are no exception. Revenue splits across CTV, online video, display, and audio, while acquisitions and traffic-acquisition costs add layers of jargon that stretch a single 10-K past 300 pages. If you have ever asked, “How do I find Magnite insider trading Form 4 transactions?� or “Where is the Magnite quarterly earnings report 10-Q filing?�, you already know the challenge.

Stock Titan solves it. Our AI-powered summaries turn dense disclosures into clear takeaways�understanding Magnite SEC documents with AI instead of wrestling with footnotes. Get real-time alerts the moment a Magnite Form 4 insider transactions real-time notice hits EDGAR, see trend charts inside every Magnite earnings report filing analysis, and access side-by-side comparisons of segment margins pulled directly from the latest Magnite annual report 10-K simplified.

All SEC materials are covered: 10-Q quarterly updates, 8-K event notices, definitive proxy statements on executive compensation, and even niche exhibits. Need the story behind a sudden CTV partnership? Click the Magnite 8-K material events explained tile. Curious about option grants? The Magnite executive stock transactions Form 4 table is already filtered. From “Magnite proxy statement executive compensation� to “Magnite SEC filings explained simply,� every document is searchable, summarized, and linked—so analysts can monitor competitive positioning, track insider sentiment, and act on data without sifting through PDFs.

Filing
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Form 144 Notice Filing for Magnite indicates a proposed sale of 5,000 shares of common stock through Morgan Stanley Smith Barney LLC, with an aggregate market value of $94,450. The securities were originally acquired as Restricted Stock Units from the issuer on June 20, 2015, with an initial acquisition of 13,261 units.

Key details of the proposed transaction:

  • Trading Venue: NASDAQ
  • Planned Sale Date: June 24, 2025
  • Current Shares Outstanding: 141,110,559
  • Sale Price: Approximately $18.89 per share

The filing indicates no other sales by the same person in the past 3 months. The seller has certified no knowledge of undisclosed material adverse information regarding Magnite's operations. This Form 144 represents a standard notice of proposed sale by an insider under SEC Rule 144.

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Filing
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Magnite, Inc. (MGNI) â€� Form 144 filing overview

The notice discloses a proposed insider sale of 35,000 common shares through Morgan Stanley Smith Barney LLC, valued at $698,250. The approximate sale date is 24 June 2025, and the shares will be sold on the NASDAQ. The filing also indicates that 38,146 shares were already sold on 18 June 2025 for gross proceeds of $722,866.70, bringing the total disposition within three months to 73,146 shares.

Key contextual data supplied in the form:

  • Issuer float: 141,110,559 shares outstanding, so the new proposed sale represents roughly 0.025% of shares outstanding.
  • Seller: David Day (relationship to issuer not specified).
  • Acquisition method: All 35,000 shares stem from a stock-option exercise completed on the same day as the planned sale; consideration was paid in cash.
  • Regulatory attestation: The seller certifies no undisclosed material adverse information and acknowledges potential criminal liability for misstatements.

While insider sales can signal personal liquidity needs or portfolio diversification, the magnitude here is small relative to the total float and no other material corporate developments are disclosed.

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Filing
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Magnite, Inc. (MGNI) has filed a Form 144 indicating that Chief Product Officer Adam Soroca plans to sell up to 44,519 shares of the company’s common stock. The proposed sale, to be executed through Morgan Stanley Smith Barney LLC on or about 06/24/2025, carries an aggregate market value of approximately $890,380 based on the filing’s reference price and represents roughly 0.03% of the 141,110,559 shares outstanding.

The filing discloses the provenance of the shares: 14,261 restricted shares granted on 05/15/2021, 3,662 restricted shares granted on 08/15/2021, 18,267 restricted shares granted on 11/15/2021, and 8,329 shares to be issued from a same-day option exercise on 06/24/2025. No shares were received as gifts, and all purchases were made for cash or as equity compensation.

Form 144 also lists Soroca’s recent activity: in the prior three months he sold an additional 28,022 shares for gross proceeds of about $467,805. Combined with the proposed sale, Soroca could dispose of 72,541 shares within a short window, though the total still equates to a small fraction of the company’s float. The signer affirms that he possesses no undisclosed material adverse information and, if relying on Rule 10b5-1, has an approved trading plan in place.

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Filing
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Bank of Montreal (BMO) is offering Senior Medium-Term Notes, Series K â€� Callable Barrier Notes with Contingent Coupons due July 7, 2028. The notes are unsecured, not principal-protected and are linked to the worst performer of three U.S. equity benchmarks: the S&P 500 Index (SPX), the NASDAQ-100 Index (NDX) and the Russell 2000 Index (RTY).

Income profile. Investors are eligible to receive a monthly Contingent Coupon of 0.7917 % (� 9.50 % p.a.) provided the closing level of each index on an Observation Date is at least 70 % of its Initial Level (the “Coupon Barrier�). If any index is below its barrier, the coupon for that month is forfeited.

Issuer call feature. Beginning July 1, 2026 (one year post-settlement) BMO may redeem the notes in whole on any Observation Date. If called, holders receive par plus the contingent coupon due on the related payment date; no further payments are made.

Maturity payoff. If the notes are not called, principal repayment depends on index performance as of the July 3, 2028 Valuation Date:

  • If the Final Level of every index is â‰� its 70 % Trigger Level, investors receive par plus the final coupon (if payable).
  • If any index closes < 70 % of its Initial Level (a “Trigger Eventâ€�), repayment is par â€� (percentage decline of the Worst-Performing Index). Losses are one-for-one with the decline and can reach 100 % of principal.

Issue economics. � Expected pricing date: July 1, 2025 � Settlement: July 7, 2025 � Denomination: $1,000 � Price to public: 100 % � Agent’s commission: up to 0.95 % � Estimated initial value: $980.90 (not less than $930) � CUSIP: 06376EME9. The notes will not be listed on any exchange, and secondary liquidity will rely solely on BMO Capital Markets (BMOCM), which may act as market-maker but is under no obligation to do so.

Key risks highlighted. Investors face (1) credit risk of Bank of Montreal, (2) market risk from three equity indexes, (3) contingent income risk (coupons can be zero), (4) call/reinvestment risk once coupons become attractive to BMO, (5) downside participation to zero if the worst index falls �30 %, and (6) estimated value discount versus issue price due to hedging and distribution costs. The product is not FDIC or CDIC insured and is intended for sophisticated investors comfortable with equity-linked structured products.

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Magnite, Inc. (MGNI) â€� Form 4 insider transaction

On 18 June 2025, company director James Rossman executed an open-market sale of 137,007 common shares under a Rule 10b5-1 trading plan adopted on 10 March 2025. The weighted-average sale price reported was $18.78 per share, with individual trades ranging from $18.78 to $18.82. Gross proceeds are therefore approximately $2.6 million (calculated from the weighted price disclosed).

After the transaction Rossman retains 93,679 shares held directly. Based on the reported numbers, the sale reduced his direct ownership by roughly 59 percent. No derivative securities were exercised or reported, and no additional purchases or sales were disclosed.

The filing is routine in that it documents a pre-planned disposition, yet the size of the sale may draw investor attention because it involves a majority of the insider’s previously held shares. Because the transaction was executed pursuant to a 10b5-1 plan, signaling risk is mitigated but not eliminated.

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Magnite, Inc. (MGNI) � Form 4 insider activity

Chief Financial Officer David Day reported a same-day option exercise and share sale executed on 18 June 2025 under a pre-arranged Rule 10b5-1 trading plan adopted 13 March 2025.

  • Option exercise: 38,146 employee stock options exercised at an exercise price of $4.92 (grant dated 20 Feb 2019, fully vested).
  • Share sale: The exact 38,146 shares were disposed of on the open market at an average price of $18.95.
  • Gross transaction value: Approximately $723k in proceeds (38,146 × $18.95) versus a cash outlay of roughly $188k for the exercise, implying a pre-tax gain of about $535k.
  • Post-transaction ownership: Day retains 443,528 Magnite common shares held directly, indicating continued exposure to the company’s equity despite the sale.

There were no derivative holdings remaining from the exercised option grant, and no new option awards were reported. Because the activity was executed under an established 10b5-1 plan and represents less than 8% of Day’s reported ownership, the filing appears routine. Investors should nonetheless note the CFO’s decision to monetize a portion of his stake at a price materially above the option strike, potentially signalling confidence in capturing value or addressing personal liquidity needs rather than a fundamental view of Magnite’s prospects.

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Magnite, Inc. (MGNI) filed a Form 4 disclosing transactions by President of Operations Katie Seitz Evans. On 06/16/2025 she exercised 20,000 stock options at an exercise price of $3.61 per share, immediately followed by a sale of the same 20,000 common shares at $18.50 per share. The exercise originated from an option grant dated 02/26/2018 that fully vested by February 2022.

Following the transactions, Evans� direct common-stock holdings decreased by 20,000 shares to 442,788. She continues to hold 16,137 vested options with a $3.61 strike price expiring 02/26/2028.

The filing notes that both the exercise and sale were conducted under a Rule 10b5-1 trading plan adopted on 03/06/2025, providing advance notice and reducing interpretative risk around timing. No other derivatives or indirect holdings were reported.

Financial magnitude: gross sale proceeds approximate $370,000 versus an exercise cost of about $72,200, implying a before-tax gain of roughly $298,000. Despite the sale, Evans maintains a sizeable equity stake, representing continued alignment with shareholder interests.

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Magnite, Inc. (MGNI) â€� Form 4 insider transaction

Chief Legal Officer Aaron Saltz reported the sale of 16,788 shares of common stock on 16-Jun-2025 at $17.50 per share. The transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on 14-Mar-2025, indicating it was pre-scheduled. Following the sale, Saltz continues to hold 279,388 shares directly.

No derivative securities were transacted, and the filing does not disclose additional purchases, options exercises, or dispositions. The filing was signed on 18-Jun-2025 and reflects a single-person submission.

Key take-aways for investors

  • Insider is reducing—not increasing—equity exposure, though holdings remain sizable.
  • The Rule 10b5-1 plan mitigates concerns of opportunistic selling but does not eliminate potential negative market signaling.
  • The transaction size represents ~6.0% of Saltz’s post-sale ownership (16,788 ÷ (279,388 + 16,788)).
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Filing
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Magnite, Inc. (MGNI) � Form 144 filing overview: The notice discloses a proposed sale of 137,007 common shares through Morgan Stanley Smith Barney LLC, valued at $2.57 million based on prevailing market prices. The filing targets an approximate sale date of 18 June 2025 on the NASDAQ exchange. With 141,110,559 shares outstanding, the transaction represents roughly 0.10 % of total shares, indicating a modest disposition relative to the company’s float.

The seller acquired the stock via (1) option exercise on 28 July 2020 (112,087 shares, cash payment) and (2) restricted-stock grants on 1 April 2020 (11,177 shares) and 12 June 2024 (13,743 shares). No sales have occurred in the past three months, and the preparer affirms the absence of undisclosed material adverse information. The filing does not identify the seller by name but confirms the relationship is that of an insider covered by Rule 144 and potentially a Rule 10b5-1 trading plan.

Key takeaways for investors:

  • The proposed sale is relatively small in percentage terms and unlikely to create significant market overhang.
  • Use of Form 144 indicates the seller is observing SEC resale restrictions, which generally mitigates regulatory risk.
  • Lack of past-quarter sales suggests the move may be routine portfolio diversification or liquidity, rather than a large liquidation.

No financial performance metrics, earnings data, or operational updates are included; the filing solely concerns share resale.

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Magnite, Inc. (MGNI) Form 4 filing: CEO & Director Michael G. Barrett disclosed two open-market sales executed under a Rule 10b5-1 trading plan adopted on 03/12/2025.

  • 06/16/2025: 45,000 shares of common stock sold at a $17.76 weighted-average price (range $17.30-$18.00).
  • 06/18/2025: 30,000 shares sold at $19.00.

Total shares sold: 75,000. Following the transactions, Barrett owns 656,708 shares directly.

The Form notes that detailed price breakdowns are available upon SEC request. No derivative security activity was reported.

The sales reduce Barrett’s direct holdings by roughly 10% (derived from reported numbers) yet maintain a sizable remaining stake, suggesting continued alignment. Because sales were pre-planned, they may be viewed as routine rather than signaling strategic shifts. No other material events or company operational data were included in this filing.

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FAQ

What is the current stock price of Magnite (MGNI)?

The current stock price of Magnite (MGNI) is $23.52 as of July 25, 2025.

What is the market cap of Magnite (MGNI)?

The market cap of Magnite (MGNI) is approximately 3.2B.

What is Magnite Inc's core business model?

Magnite Inc operates as an independent sell-side advertising platform that empowers publishers to monetize their content through advanced programmatic transactions across various formats.

How does Magnite generate revenue?

The company generates revenue by facilitating the programmatic sale of advertising inventory, executing billions of transactions monthly across CTV, video, display, and audio channels.

What industries does Magnite serve?

Magnite serves a broad spectrum of industries by offering ad monetization solutions for publishers in digital video, connected TV, digital display, and audio advertising markets.

What distinguishes Magnite's technology platform?

Magnite’s platform is distinguished by its advanced real-time bidding capabilities, comprehensive analytics, and integration with multiple demand-side platforms, ensuring brand safety and high-quality inventory.

How extensive is Magnite's global presence?

Magnite maintains a robust global presence with offices across key regions including North America, EMEA, LATAM, and APAC, providing localized support and market expertise.

Who are the primary clients of Magnite?

The platform is trusted by a diverse range of clients including major publishers, leading agencies, and globally recognized brands that seek to optimize their digital advertising campaigns.

What operational benefits does Magnite offer to publishers?

Publishers benefit from Magnite's ability to streamline inventory management, optimize ad placements, and provide data-driven insights that enhance overall monetization efficiency.

How does Magnite adapt to evolving digital advertising trends?

Magnite continuously refines its technology and expands its inventory capabilities to accommodate emerging trends such as live streaming and expanding CTV opportunities, ensuring sustained relevance in the market.
Magnite Inc

NASDAQ:MGNI

MGNI Rankings

MGNI Stock Data

3.18B
138.82M
1.9%
89.25%
7.71%
Advertising Agencies
Services-computer Programming, Data Processing, Etc.
United States
NEW YORK