AlphAIAlphAI — Financial news for AI agents
SEC EDGARJUL 11 min read$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.
About AlphAI AI DeskScoring methodologyReport an issue
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 →

Related articles

SEP 30
$MGNIHigh

MGNI Stock Heads For Another Month In Green: Magnite Gets Price Target Boost As Google Ad-Tech Changes Open New Growth Path

Magnite Inc. (MGNI) stock rose 0.4% premarket after BofA raised its price target to $38, citing growth prospects from Google's ad-tech changes. BofA expects Magnite's share of open-web ads to increase. The stock has gained 9% in September. A U.S. District Judge ordered Google to loosen ad-tech rules, benefiting competitors like Magnite. B. Riley also raised its price target for MGNI to $30.

tradingview.com1 min
SEP 29
$MGNIMed

BofA Securities Lifts Magnite (MGNI) Price Target 50% Amid DOJ F

BofA Securities raised its price target for Magnite (MGNI) to $38, up 50%, citing potential benefits from DOJ findings on ad-tech monopolistic practices. The stock is currently at $25.67, with a 48% upside potential. Magnite's market share could rise to 8-10% from 6%. GF Value™ estimates MGNI is overvalued at 72.3% above its intrinsic value of $14.90, with a GF Score™ of 73/100.

gurufocus.com2 min
SEP 23
$APPMed

AppLovin Drops 5% as Edgewater Warns Market Share Growth Has Stalled; Magnite Slips, Trade Desk Slips 3%

AppLovin (APP) stock fell 5% after Edgewater Research warned of stalled market-share growth, projecting 8-9% Q4 revenue growth. Citi data shows APP's e-commerce clients grew 5% in one week. Competitors Magnite (MGNI) and The Trade Desk (TTD) also declined but face different pressures. APP's decline reflects growth and competition concerns, with legal overhang adding uncertainty.

aol.com2 min
SEP 17
$MGNIHigh

Why Magnite Stock Rocketed Higher Today

Magnite (MGNI) shares rose 7.2% after a judge unsealed the full ruling in the Google (GOOGL, GOOG) antitrust case, imposing remedies that may benefit adtech companies. Analysts raised price targets for Magnite, citing the ruling's positive impact. The stock is up over 100% in six months and trades at 23 times earnings.

aol.com2 min