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

AUG 19
$MGNIMed

Magnite Sees CTV Surge and Google Antitrust Remedies as Growth Catalysts

Magnite reported a 36% year-over-year increase in CTV contribution ex-TAC, now representing 51% of its mix. The company benefits from partnerships with Netflix, Warner, Roku, and Disney, and sees growth in programmatic CTV buying. Magnite also highlighted its integrated ad-serving technology and share repurchase program. According to the company, its operating model generated 80% flow-through from incremental revenue to EBITDA in Q2, with a $10M top-line beat and $8M EBITDA beat.

yahoo.com2 min
AUG 11
$MGNIMedAI 8/10

Magnite Sees CTV Growth Hit 36% as Sports and SMB Ad Demand Expands

Magnite (NASDAQ:MGNI) said CTV growth reached 36% as live sports and small-to-midsize business ad demand expands, with further opportunities in NFL, NCAA football and March Madness. The company raised its growth outlook to 13% to 14%, implying about 20% EBITDA growth and over 40% free-cash-flow growth, and lifted its adjusted EBITDA margin target to above 37%.

finance.yahoo.com6 min
AUG 6
$MGNIHighAI 9/10

Why is Magnite stock surging today?

Magnite shares rose about 9.8% in pre-open after the company reported Q2 2026 results. Revenue was $192.8M vs $179.2M consensus, non-GAAP EPS $0.26 vs $0.25, and contribution ex-TAC up 17% to $189.6M. Adjusted EBITDA rose 30% to $71M. Magnite raised full-year 2026 guidance and analysts lifted price targets.

investing.com6 min
AUG 6
$MGNIHighAI 9/10

Magnite Q2 Earnings Call Highlights

Magnite (NASDAQ:MGNI) reported Q2 cash of $333 million, operating cash flow of $57 million and net leverage of 0.1x. The company repurchased or withheld 2.1 million shares for about $28 million in the quarter and raised Q3 guidance for total Contribution ex-TAC to $188 million to $192 million. Full-year Adjusted EBITDA margin is now at least 37%.

finance.yahoo.com6 min