Skip to content
sellWeak cluster of 210b5-1 plan

Thomas M Siebel sold $10M of AI

Executive Chairman at C3.ai, Inc.. 554,802 shares at an average of $18.82, traded Oct 14, 2025, filed Oct 16, 2025.

Warning score
38
Value
$10M
554,802 shares
Holdings after
1,955,300
-22% from before
From 52-week low
+23%
low $15.46, close $18.99
From 52-week high
-56%
high $42.94, as of Oct 14, 2025

Score components

  • Role
    Chair
    +20
  • Trade size
    $10.4M at market
    +25
  • Share of holdings sold
    Sold 22% of holdings
    +5
  • Cluster
    2 insiders selling within 14 days
    +8
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m -22.1%, 3m -25.1%, 6m -48.4%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

AIOct 13, 2026 · close 12.01
Since filing Oct 16, 2025: -33.5%SPY +19.0% · excess -52.5%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001031530-25-000008, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Oct 14, 2025SOpen-market sale
Class A Common Stockindirect: See Footnote10b5-1
-554,802$18.82$10M1,955,300Oct 16, 2025

Related signals

Other insiders at C3.ai, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
33Weak
AIsell 210b5-1
C3.ai, Inc.
Thomas M Siebel
CEO and Chairman of the Board
$4.8M
444,248 shares
-44%
27Weak
AIsell 2
C3.ai, Inc.
Hitesh Lath
CHIEF FINANCIAL OFFICER
$221k
21,077 shares
-5%
31Weak
AIsell 2
C3.ai, Inc.
Thomas M Siebel
CEO and Chairman of the Board
$241k
22,780 shares
-3%
29Weak
AIsell 2
C3.ai, Inc.
Thomas M Siebel
CEO and Chairman of the Board
$174k
16,890 shares
-2%
33Weak
AIsell 210b5-1
C3.ai, Inc.
Thomas M Siebel
CEO and Chairman of the Board
$4.8M
453,314 shares
-39%
22Weak
AIsell 210b5-1
C3.ai, Inc.
Hitesh Lath
CHIEF FINANCIAL OFFICER
$200k
20,000 shares
-5%
48Moderate
AIsell 2
C3.ai, Inc.
Thomas M Siebel
CEO and Chairman of the Board
$1.3M
139,500 shares
-14%
40Moderate
AIsell 310b5-1
C3.ai, Inc.
Thomas M Siebel
CEO and Chairman of the Board
$4.2M
462,565 shares
-47%
58Moderate
AIsell 3
C3.ai, Inc.
Stephen Bradley Ehikian
Chief Executive Officer
$478k
50,542 shares
-7%
39Weak
AIsell 310b5-1
C3.ai, Inc.
Hitesh Lath
CHIEF FINANCIAL OFFICER
$426k
48,619 shares
-11%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Thomas M Siebel sold $10M of AI | InsiderTell