C3.ai CEO Thomas M. Siebel exercises options, sells shares

Available on EDGAR 11/12/2026 - 05:53 PM EST Accepted by SEC EDGAR 11/12/2026 - 05:52 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

C3.ai, Inc. CEO and Chairman of the Board Thomas M. Siebel exercised options for 328,742 shares of Class A Common Stock at $3.90 per share on November 10, 2026, and sold the same number at a weighted-average $11.76 per share. On November 11, he exercised options for 97,913 shares at $3.90 and sold the same number at a weighted-average $12.14. The transactions on both dates were effected pursuant to a previously established Rule 10b5-1 trading plan dated September 20, 2024.

Insider Trade Summary 10b5-1

Exercise and Sale: 426,655 shares ($3.39M approx. pre-tax spread)

Exercise and Sale 6 txns

Insider SIEBEL THOMAS M

Role CEO and Chairman of the Board

Sold 426,655 shs ($5.05M)

Approx. gross sale proceeds $5.05M

Approx. exercise cost $1.66M

Approx. pre-tax spread $3.39M

Share of Position Sold 37.1%

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy) F1, F9	97,913	$0.00	$0.00
Exercise	Class A Common Stock F1	97,913	$3.90	$382K
Sale	Class A Common Stock F1, F3	97,913	$12.14	$1.19M
Exercise	Stock Option (Right to Buy) F1, F9	328,742	$0.00	$0.00
Exercise	Class A Common Stock F1	328,742	$3.90	$1.28M
Sale	Class A Common Stock F1, F2	328,742	$11.76	$3.87M
Holding	Class A Common Stock F4	--	--	--
Holding	Class A Common Stock F5	--	--	--
Holding	Class A Common Stock F6	--	--	--
Holding	Class A Common Stock F7	--	--	--
Holding	Class A Common Stock F8	--	--	--

Holdings After Transaction: Stock Option (Right to Buy) — 1,106,930 options (Direct); Class A Common Stock — 722,362 shares (Direct); Class A Common Stock — 8,447,956 shares (Indirect, See Footnote)

Holdings Before and After: Stock Option (Right to Buy), 1,533,585 to 1,106,930 options (Direct); Class A Common Stock, 722,362 to 722,362 shares (Direct)

Other Insiders: 1 other insider reported open-market sales of this stock in the 30 days up to this filing.

Footnotes (9)

1. F1. The transaction being reported was effected pursuant to a previously established Rule 10b5-1 trading plan dated September 20, 2024.
2. F2. The price reported is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $11.5 to $11.91, 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.
3. F3. The price reported is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $11.93 to $12.285, 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.
4. F4. The shares are held by The Siebel Living Trust u/a/d 7/27/93, as amended, of which the Reporting Person is trustee.
5. F5. The shares are held by First Virtual Holdings, LLC, of which the Reporting Person is trustee.
6. F6. The shares are held by HS ET DE Investments LLC, of which the Reporting Person is the manager.
7. F7. The shares are held by Siebel Legacy Investments I LLC, of which the Reporting Person is the manager.
8. F8. The shares are held by Siebel Legacy Investments II LLC, of which the Reporting Person is the manager.
9. F9. Fully vested.

Key Figures

Options exercised: 328,742 shares Option exercise price: $3.90 per share Weighted-average sale price: $11.76 per share +2 more

5 metrics

Options exercised 328,742 shares November 10, 2026

Option exercise price $3.90 per share Options exercised November 10 and November 11, 2026

Weighted-average sale price $11.76 per share Sale on November 10, 2026

Options exercised 97,913 shares November 11, 2026

Weighted-average sale price $12.14 per share Sale on November 11, 2026

Key Terms

Rule 10b5-1 trading plan, weighted-average price

2 terms

Rule 10b5-1 trading plan regulatory

"pursuant to a previously established Rule 10b5-1 trading plan dated September 20, 2024"

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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What were the price ranges for Thomas M. Siebel's C3.ai (AI) sales?

On November 10, 2026, the sale prices ranged from $11.50 to $11.91 per share; on November 11, 2026, they ranged from $11.93 to $12.285 per share. Both ranges are inclusive.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

SIEBEL THOMAS M

(Last) (First) (Middle)

C/O C3.AI, INC.

1400 SEAPORT BLVD, SUITE 500

(Street)

REDWOOD CITY CALIFORNIA 94603

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
C3.ai, Inc. [ AI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	CEO and Chairman of the Board

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/10/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	11/10/2026		M(1)		328,742	A	$3.9	1,051,104	D
Class A Common Stock	11/10/2026		S(1)		328,742	D	$11.76(2)	722,362	D
Class A Common Stock	11/11/2026		M(1)		97,913	A	$3.9	820,275	D
Class A Common Stock	11/11/2026		S(1)		97,913	D	$12.14(3)	722,362	D
Class A Common Stock								7,105,832	I	See Footnote(4)
Class A Common Stock								13,066	I	See Footnote(5)
Class A Common Stock								37,327	I	See Footnote(6)
Class A Common Stock								54,616	I	See Footnote(7)
Class A Common Stock								1,237,115	I	See Footnote(8)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$3.9	11/10/2026		M(1)			328,742	(9)	11/27/2028	Class A Common Stock	328,742	$0	1,204,843	D
Stock Option (Right to Buy)	$3.9	11/11/2026		M(1)			97,913	(9)	11/27/2028	Class A Common Stock	97,913	$0	1,106,930	D

Explanation of Responses:

1. The transaction being reported was effected pursuant to a previously established Rule 10b5-1 trading plan dated September 20, 2024.

2. The price reported is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $11.5 to $11.91, 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.

3. The price reported is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $11.93 to $12.285, 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.

4. The shares are held by The Siebel Living Trust u/a/d 7/27/93, as amended, of which the Reporting Person is trustee.

5. The shares are held by First Virtual Holdings, LLC, of which the Reporting Person is trustee.

6. The shares are held by HS ET DE Investments LLC, of which the Reporting Person is the manager.

7. The shares are held by Siebel Legacy Investments I LLC, of which the Reporting Person is the manager.

8. The shares are held by Siebel Legacy Investments II LLC, of which the Reporting Person is the manager.

9. Fully vested.

Remarks:

	/s/ Tom MacMitchell, Attorney-in-Fact	11/12/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)