C3.ai's Thomas Siebel plans $10.1M share sale

Available on EDGAR 11/10/2026 - 04:19 PM EST Accepted by SEC EDGAR 11/10/2026 - 04:18 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

C3.ai, Inc. officer and director Thomas M. Siebel reported a planned sale of 844,777 shares of Class A common stock, with an aggregate market value of $10,137,324. The notice says the sales are from cashless option exercises that will occur within three months from November 10, 2026, and lists November 10, 2026, as the approximate sale date.

Key Figures

Shares to be sold: 844,777 shares Aggregate market value: $10,137,324 Shares outstanding: 157,279,864 shares

3 metrics

Shares to be sold 844,777 shares Planned sale of Class A common stock

Aggregate market value $10,137,324 Shares listed for the planned sale

Shares outstanding 157,279,864 shares Number listed in the securities information

Key Terms

Cashless Option Exercises, Rule 10b5-1, Aggregate Market Value

3 terms

Cashless Option Exercises financial

"sales under this filing are from Cashless Option Exercises"

Rule 10b5-1 regulatory

"If Relying on Rule 10b5-1"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

Aggregate Market Value financial

"Number of Shares or Other Units To Be Sold | Aggregate Market Value"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

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

How many C3.ai (AI) shares does Thomas Siebel plan to sell?

Thomas M. Siebel, a C3.ai officer and director, reported a planned sale of 844,777 shares of Class A common stock, with an aggregate market value of $10,137,324.

When are the planned C3.ai (AI) sales expected?

The notice lists November 10, 2026, as the approximate sale date. It says the sales are from cashless option exercises that will occur within three months from November 10, 2026.

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

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001031530
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	C3.ai, Inc.
SEC File Number	001-39744
Address of Issuer	1400 SEAPORT BLVD REDWOOD CITY CALIFORNIA 94063
Phone	650-503-2200
Name of Person for Whose Account the Securities are To Be Sold	Thomas M. Siebel
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer and Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A Common	J.P. Morgan Securities LLC 270 Park Avenue 10th Floor New York NY 10017	844777	10137324	157279864	11/10/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A Common Stock	11/10/2026	Stock Options	Issuer			844777	11/10/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	08/11/2026	453314	4764238
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	09/02/2026	16890	3221938
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	09/14/2026	22780	240609
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	09/15/2026	282001	3072970
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	09/16/2026	162247	1709957
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	10/13/2026	435363	5145076

144: Remarks and Signature

Remarks	The sales under this filing are from Cashless Option Exercises that will occur within 3 months from the date of this filing.
Date of Notice	11/10/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/20/2024
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Thomas M. Siebel.
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)