$MGNI

Caine Paul sold $118K of MGNI

Caine Paul sold 5,000 shares of MAGNITE, INC. (MGNI) at $23.53 ($0.12M total) on 2026-09-10 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Caine Paul
Published Sep 11, 2026, 8:11 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 11, 2026, 9:25 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.
AlphAI market briefInsider activity
Primary signal
$MGNI
Bearish
medium confidence
Mentioned
$MGNI
Relevance
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$MGNIBearishLow
01

Why it matters

The transaction represents a modest reduction in insider ownership, unlikely to shift long‑term outlook.

02

Market read

Small insider sell with limited price impact; primarily of interest to short‑term traders monitoring insider activity.

03

What to watch

Potential upcoming corporate actions or earnings that prompted the pre‑arranged sale.

Relevance 3/10Novelty 4/10Timing: same‑day filing

Background

Form 4 filings disclose insider trades; a director's sale under a 10b5‑1 plan is a routine disclosure.

Company-level read

Ticker impact

$MGNIBearishMedium confidence
Context

Director Caine Paul sold 5,000 shares for $117,650 via a 10b5‑1 plan on 2026‑09‑10.

Expected impact

Potential short‑term dip of 0.5‑1% as market digests insider sell.

Evidence & confidence

Sale size is modest relative to holdings and market cap; typical for pre‑arranged plans.

Market effects

No broader sector impact; isolated insider transaction.

None

None

Counterpoint

Insider sell may be routine; could be ignored if fundamentals remain strong.

Key entities

  • Caine Paul

    Director of Magnite, Inc. who sold shares.

  • Magnite, Inc.

    US‑listed digital advertising platform (ticker MGNI).

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.

Related articles

$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.

$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.

$TTDMed

Trade Desk Rises 5% on Kokai Zuma Agentic AI Launch, AppLovin and Magnite Barely Budge

The Trade Desk (TTD) rose 5% to $14.25 after launching Kokai Zuma, an AI-driven advertising platform. Despite a 64% YTD decline, the stock gained on product news, while QQQ fell 0.2%. TTD trades at 11x forward earnings, below the industry average. AppLovin (APP) and Magnite (MGNI) showed minimal movement despite growth. TTD's Q2 revenue grew 3% YoY to $715M, with Q3 guidance at $650M+.

$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.