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sellWeak10b5-1 plan

Thomas M Siebel sold $6.0M of AI

Executive Chairman at C3.ai, Inc.. 511,732 shares at an average of $11.66, traded Feb 10, 2026, filed Feb 12, 2026.

Warning score
20
Value
$6.0M
511,732 shares
Holdings after
722,362
-41% from before
From 52-week low
+13%
low $10.15, close $11.48
From 52-week high
-67%
high $35.09, as of Feb 10, 2026

Score components

  • Role
    Chair
    +20
  • Trade size
    $6.0M at market
    +25
  • Share of holdings sold
    Sold 41% of holdings
    +10
  • Cluster
    No other insider selling within 14 days
    0
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 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 -14.2%, 3m -13.0%, 6m -1.9%.

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 Feb 12, 2026: +11.1%SPY +15.2% · excess -4.1%

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 0001577526-26-000005, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Feb 10, 2026MOption exercise
Class A Common Stock10b5-1
+511,732$2.04$1.0M1,234,094Feb 12, 2026
Feb 10, 2026SOpen-market sale
Class A Common Stock10b5-1
-511,732$11.66$6.0M722,362Feb 12, 2026
Feb 10, 2026MOption exercise
Stock Option (Right to Buy)derivative10b5-1
-511,732$0.00$02,275,682Feb 12, 2026

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.