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sellWeak cluster of 210b5-1 plan

Thomas M Siebel sold $9.8M of AI

Executive Chairman at C3.ai, Inc.. 566,125 shares at an average of $17.23, traded Sep 16, 2025, filed Sep 17, 2025.

Warning score
38
Value
$9.8M
566,125 shares
Holdings after
2,510,102
-18% from before
From 52-week low
+13%
low $15.46, close $17.50
From 52-week high
-59%
high $42.94, as of Sep 16, 2025

Score components

  • Role
    Chair
    +20
  • Trade size
    $9.8M at market
    +25
  • Share of holdings sold
    Sold 18% 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.

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 9, 2026 · close 11.53
Since filing Sep 17, 2025: -33.1%SPY +19.7% · excess -52.8%

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 0001031530-25-000006, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 16, 2025SOpen-market sale
Class A Common Stockindirect: See Footnote10b5-1
-566,125$17.23$9.8M2,510,102Sep 17, 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%
42Moderate
AIsell 2
C3.ai, Inc.
Hitesh Lath
CHIEF FINANCIAL OFFICER
$797k
46,881 shares
-18%
58Moderate
AIsell 2
C3.ai, Inc.
Thomas M Siebel
Executive Chairman
$1.5M
92,000 shares
-51%
47Moderate
AIsell 2
C3.ai, Inc.
Thomas M Siebel
Executive Chairman
$284k
17,200 shares
-53%
35Weak
AIsell10b5-1
C3.ai, Inc.
Thomas M Siebel
CHIEF EXECUTIVE OFFICER
$9.7M
577,678 shares
-16%
55Moderate
AIsell
C3.ai, Inc.
Thomas M Siebel
CHIEF EXECUTIVE OFFICER
$7.7M
336,000 shares
-51%
35Weak
AIsell10b5-1
C3.ai, Inc.
Thomas M Siebel
CHIEF EXECUTIVE OFFICER
$17M
589,468 shares
-15%

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 $9.8M of AI | InsiderTell