C3.ai CEO Thomas M. Siebel sells 435,363 shares
The reported sale prices ranged from $11.565 to $12.0123 per share, inclusive.
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Form Type
4
Rhea-AI Filing Summary
C3.ai, Inc. CEO and Chairman Thomas M. Siebel exercised 435,363 fully vested options for Class A shares on October 13, 2026, at a $3.90 exercise price, then sold 435,363 shares at a weighted-average $11.8179 per share under a Rule 10b5-1 trading plan dated September 20, 2024. His reported option position following the exercise was 1,533,585 options, expiring November 27, 2028.
Insider Trade Summary 10b5-1
Exercise and Sale: 435,363 shares ($3.45M approx. pre-tax spread)
Exercise and Sale
8 txns
Insider
SIEBEL THOMAS M
Role
CEO and Chairman of the Board
Sold
435,363 shs ($5.15M)
Approx. gross sale proceeds
$5.15M
Approx. exercise cost
$1.70M
Approx. pre-tax spread
$3.45M
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option (Right to Buy) F1, F8 | 435,363 | $0.00 | $0.00 |
| Exercise | Class A Common Stock F1 | 435,363 | $3.90 | $1.70M |
| Sale | Class A Common Stock F1, F2 | 435,363 | $11.8179 | $5.15M |
| holding | Class A Common Stock F3 | -- | -- | -- |
| holding | Class A Common Stock F4 | -- | -- | -- |
| holding | Class A Common Stock F5 | -- | -- | -- |
| holding | Class A Common Stock F6 | -- | -- | -- |
| holding | Class A Common Stock F7 | -- | -- | -- |
Holdings After Transaction:
Stock Option (Right to Buy) — 1,533,585 contracts (Direct);
Class A Common Stock — 722,362 shares (Direct);
Class A Common Stock — 8,447,956 shares (Indirect, See Footnote)
Footnotes (8)
- F1. The transaction being reported was effected pursuant to a previously established Rule 10b5-1 trading plan dated September 20, 2024.
- F2. The price reported is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $11.565 to $12.0123, inclusive. The Reporting Person will provide upon request to the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer, full information regarding the number of shares sold at each separate price.
- F3. The shares are held by The Siebel Living Trust u/a/d 7/27/93, as amended, of which the Reporting Person is trustee.
- F4. The shares are held by First Virtual Holdings, LLC, of which the Reporting Person is trustee.
- F5. The shares are held by HS ET DE Investments LLC, of which the Reporting Person is the manager.
- F6. The shares are held by Siebel Legacy Investments I LLC, of which the Reporting Person is the manager.
- F7. The shares are held by Siebel Legacy Investments II LLC, of which the Reporting Person is the manager.
- F8. Fully vested.
Key Figures
Options exercised: 435,363 options
Exercise price: $3.90 per share
Shares sold: 435,363 shares
+3 more
6 metrics
Options exercised
435,363 options
October 13, 2026
Exercise price
$3.90 per share
Options exercised October 13, 2026
Shares sold
435,363 shares
October 13, 2026
Weighted-average sale price
$11.8179 per share
October 13, 2026
Sale price range
$11.565 to $12.0123 per share
Inclusive range for the reported sale
Option position after transaction
1,533,585 options
Expiration date November 27, 2028
Key Terms
Rule 10b5-1 trading plan, weighted-average price, Fully vested
3 terms
Rule 10b5-1 trading plan regulatory
"previously established Rule 10b5-1 trading plan"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted-average price financial
"The price reported is a weighted-average price."
Weighted-average price is the average of multiple prices where each price is counted according to its size or importance—larger trades carry more weight than smaller ones, like averaging course grades by credit hours. It matters to investors because it gives a more realistic picture of the true price paid or received, helping assess trade execution, compare performance, calculate cost basis, and value positions more accurately than a simple average.
Fully vested financial
"Fully vested."
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
How many options did Thomas M. Siebel exercise, and what was the exercise price?
Siebel exercised 435,363 fully vested options to acquire 435,363 Class A shares at a $3.90 exercise price on October 13, 2026.
How many options did Thomas M. Siebel hold after the exercise, and when do they expire?
His reported option position following the exercise was 1,533,585 options, with an expiration date of November 27, 2028.
AI-generated analysis. How Rhea-AI works. Not financial advice.
