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SEC EDGAR$MGNI

BARRETT MICHAEL G. sold $1.5M of MGNI

BARRETT MICHAEL G. (CEO) sold 75,000 shares of MAGNITE, INC. (MGNI) at $19.50 ($1.46M total) on 2026-06-29 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · BARRETT MICHAEL G.
Published Jul 1, 2026, 8:49 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Jul 1, 2026, 9:04 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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AlphAI market briefInsider activity
Primary signal
$MGNI
Neutral
medium confidence
Mentioned
$MGNI
Relevance
5/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$MGNINeutralLow
01

Why it matters

This provides a fresh, primary-source datapoint on CEO Michael G. Barrett’s planned share sales, but it does not include new operating, financial, or regulatory information.

02

Market read

Traders may treat it as a minor sentiment datapoint rather than a catalyst.

03

What to watch

Insider sales can be routine, but traders may still monitor whether multiple insiders sell around the same time or whether subsequent filings show a change in pattern.

Relevance 5/10Novelty 3/10Timing: SEC Form 4 filed 2026-07-01 (sale dated 2026-06-29).

Background

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

Company-level read

Ticker impact

$MGNINeutralMedium confidence
Context

Magnite CEO Michael G. Barrett filed an SEC Form 4 selling 75,000 shares at $19.50 on 2026-06-29 under a 10b5-1 plan.

Expected impact

Low likelihood of a sustained price move solely from this filing.

Evidence & confidence

The transaction is an open-market sale by the CEO, but it is explicitly under a pre-arranged Rule 10b5-1 plan, which typically reduces interpretive weight versus discretionary selling.

Market effects

Sector

No sector read-across; this is a single-company insider transaction.

Regional

None indicated.

Global

None indicated.

Counterpoint

What could challenge this read

Because the sale is under a 10b5-1 plan, the market may overreact; the filing may be more about planned liquidity than negative fundamentals.

Key entities

  • issuer
    MAGNITE, INC.

    Company whose CEO insider sale is disclosed on Form 4.

  • insider
    BARRETT MICHAEL G.

    CEO, officer/director; sold 75,000 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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