$AI

SIEBEL THOMAS M sold $4.8M of AI

SIEBEL THOMAS M (CEO and Chairman of the Board) sold 453,314 shares of C3.ai, Inc. (AI) at $10.51 ($4.76M total) on 2026-08-11 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · SIEBEL THOMAS M
Published Aug 13, 2026, 9:27 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 13, 2026, 9:45 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
$AI
Neutral
medium confidence
Mentioned
$AI
Relevance
5/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$AINeutralLow
01

Why it matters

Traders may use the sale as a sentiment input, but the 10b5-1 pre-arranged plan reduces the likelihood of a strong directional fundamental signal.

02

Market read

Fresh insider-sale disclosure for AI, but with 10b5-1 framing, so expected impact is modest.

03

What to watch

The article provides no context on total insider holdings beyond post-transaction shares, no sale schedule details, and no concurrent company news, limiting inference.

Relevance 5/10Novelty 5/10Timing: today’s SEC Form 4 filing (filed 2026-08-13)

Background

The article is an SEC Form 4 insider transaction disclosure for C3.ai, Inc. (AI) by its CEO and Chairman, filed on 2026-08-13.

Company-level read

Ticker impact

$AINeutralMedium confidence
Context

C3.ai CEO and Chairman sold 453,314 shares in an open-market transaction totaling about $4.76M, per a new SEC Form 4 filed today.

Expected impact

Likely limited, short-lived sentiment impact; watch for follow-through only if additional filings or company-specific news accompany it.

Evidence & confidence

This is a Form 4 insider sale with a stated 10b5-1 pre-arranged plan, which typically reduces the signal strength versus discretionary selling.

Market effects

Minimal sector read-through; insider-sale filings rarely reset sector expectations without accompanying operational or guidance changes.

None indicated.

None indicated.

Counterpoint

A 10b5-1 plan can reflect routine liquidity needs rather than bearish expectations, so the market may overreact if it treats it as a discretionary sell.

Key entities

  • C3.ai, Inc.

    Subject of the Form 4 insider transaction disclosure.

  • SIEBEL THOMAS M

    CEO and Chairman of the Board, reported an open-market sale under a 10b5-1 plan.

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

$AIHigh

Why is C3.ai stock surging today?

C3.ai stock rose 8.9% after Northland Securities upgraded it to Outperform and raised its price target to $16, citing the C3 Code platform as a growth driver. UBS noted improving fundamentals, including a doubling of federal bookings to $39 million. The move was driven by company-specific news, not broader market trends.

$AIMed

Why C3.ai (AI) Stock Is Up Today

C3.ai (AI) shares rose 4.4% premarket after Northland upgraded it to Outperform with a $16 price target, citing growth potential from its C3 Code platform. The company reported a 25% revenue decline in Q1. Analyst Mike Latimore highlighted customer engagement and operational stabilization under CEO Thomas Siebel. The stock is down 10.7% YTD and 36.6% below its 52-week high.