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SEC EDGAR$MGNI

BARRETT MICHAEL G. sold $785K of MGNI

BARRETT MICHAEL G. (CEO) sold 38,596 shares of MAGNITE, INC. (MGNI) at $20.35 ($0.79M total) on 2026-07-15 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · BARRETT MICHAEL G.
Published Jul 17, 2026, 9:00 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Jul 17, 2026, 9:03 PM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
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Primary signal
$MGNI
Neutral
high confidence
Mentioned
$MGNI
Relevance
4/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$MGNINeutralLow
01

Why it matters

The newest fact is the CEO’s planned open-market sale size, price, and post-transaction holdings; it does not include any new company fundamentals.

02

Market read

Primarily a sentiment/positioning datapoint for MGNI, with limited expected impact absent other catalysts.

03

What to watch

Traders may over-weight insider sales; without additional context (e.g., concurrent buys, changes in guidance, or unusual volume), the signal is usually weak.

Relevance 4/10Novelty 3/10Timing: after-hours SEC Form 4 filed 2026-07-17

Background

The article is an SEC Form 4 insider transaction disclosure for Magnite, Inc. (MGNI).

Company-level read

Ticker impact

$MGNINeutralHigh confidence
Context

Magnite CEO Barrett Michael G. sold 38,596 shares at $20.35 on 2026-07-15 under a pre-arranged 10b5-1 plan.

Expected impact

Likely limited near-term impact; any effect would be sentiment-only and typically fades unless paired with other negative news.

Evidence & confidence

Form 4 shows a planned open-market sale by the CEO, with no accompanying guidance, earnings, or company-specific adverse event in the filing text.

Market effects

Sector

No direct sector read-across; this is company-specific insider transaction data.

Regional

None indicated.

Global

None indicated.

Counterpoint

What could challenge this read

Because the sale is explicitly under a pre-arranged 10b5-1 plan, it may reflect liquidity planning rather than bearish expectations.

Key entities

  • issuer
    MAGNITE, INC.

    Public company whose CEO filed the Form 4 insider sale disclosure.

  • insider
    BARRETT MICHAEL G.

    CEO and officer/director who sold 38,596 shares under a 10b5-1 plan.

Read at source← All news

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

MGNI insider trading history →

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