Buonasera David sold $155K of MGNI

Buonasera David (CHIEF TECHNOLOGY OFFICER) sold 5,706 shares of MAGNITE, INC. (MGNI) at an average of $27.25 ($27.00–$28.00, $0.16M total) across 2 trades on 2026-11-05 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Buonasera David
Published Nov 6, 2026, 9:21 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Nov 6, 2026, 9:28 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 disclosed sale is modest and unlikely to move the stock materially, but may be noted by short‑term traders.

02

Market read

Small insider sale with limited price impact; primarily of interest to insiders‑tracking strategies.

03

What to watch

Potential upcoming corporate actions or compensation events not disclosed in the filing.

Relevance 3/10Novelty 3/10Timing: after‑hours filing

Background

Magnite is a US‑listed ad‑tech company; insider transactions are regularly monitored by traders.

Company-level read

Ticker impact

$MGNIBearishMedium confidence
Context

Form 4 shows CTO Buonasera David sold 5,706 shares for $155K via a 10b5‑1 plan.

Expected impact

likely slight downward pressure as market prices in the sale

Evidence & confidence

Sale represents ~0.2% of insider's post‑transaction holdings and is under $200K, so impact is limited.

Market effects

Minimal; no broader sector impact from a small insider sale.

None; confined to US equity market.

None

Counterpoint

The sale could be routine execution of a pre‑arranged plan, not a negative signal.

Key entities

  • Buonasera David

    Chief Technology Officer of Magnite, Inc.

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.

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