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SEC EDGAROCT 141 min read$AI

SIEBEL THOMAS M sold $5.1M of AI

SIEBEL THOMAS M (CEO and Chairman of the Board) sold 435,363 shares of C3.ai, Inc. (AI) at $11.82 ($5.15M total) on 2026-10-13 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · SIEBEL THOMAS M
Published Oct 14, 2026, 9:44 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Oct 14, 2026, 9:46 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
$AI
Bearish
high confidence
Mentioned
$AI
Relevance
5/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$AIBearishMed
01

Why it matters

The CEO's sale reduces his ownership to ~0.7 M shares, a noticeable decline that may trigger algorithmic sell pressure.

02

Market read

Fresh insider sell disclosure; traders may consider short positions or monitor price reaction.

03

What to watch

The 10b5‑1 plan execution may have been scheduled long before any material news, reducing informational content.

Relevance 5/10Novelty 8/10Timing: after-hours

Background

Form 4 filings provide transparent disclosure of insider transactions, often prompting short‑term price moves.

Company-level read

Ticker impact

$AIBearishHigh confidence
Context

C3.ai CEO Thomas Siebel sold 435,363 shares for $5.1M via a 10b5‑1 plan, reducing his stake to 722,362 shares.

Expected impact

likely downward pressure as investors price in the insider sell

Evidence & confidence

The sale is sizable for a mid‑cap and disclosed via a Form 4, providing fresh, material information that markets typically react to.

Market effects

Sector

May raise concerns for AI software sector if other insiders follow suit.

Regional

Limited to U.S. equity markets where AI trades.

Global

Low; impact confined to C3.ai shareholders and related AI stocks.

Counterpoint

What could challenge this read

The sale could be purely portfolio rebalancing under a pre‑arranged plan, not a negative signal.

Key entities

  • company
    C3.ai, Inc.

    AI software provider listed on NYSE under ticker AI.

  • person
    Thomas Siebel

    CEO and Chairman of C3.ai, reporting a $5.1M share sale.

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.

AI insider trading history →

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