Thomas Siebel files notice to sell 1,795,490 AI shares

Thomas M. Siebel submitted a Form 144 notice to potentially sell up to 1,795,490 shares of Class A Common Stock of issuer AI through J.P.

Rhea-AI Filing Summary

Thomas M. Siebel submitted a Form 144 notice to potentially sell up to 1,795,490 shares of Class A Common Stock of issuer AI through J.P. Morgan Securities LLC, with an estimated aggregate market value of $16,087,590. The class had 151,949,285 shares outstanding at the time of the notice. The disclosure also lists several sales of Class A Common Stock in the prior three months, including 472,005 shares sold on June 15, 2026 for $5,241,899 and 369,624 shares sold on May 15, 2026 for $3,221,938.

Key Figures

Shares to be sold: 1,795,490 shares Aggregate market value of planned sale: $16,087,590 Class A shares outstanding: 151,949,285 shares +2 more

5 metrics

Shares to be sold 1,795,490 shares Proposed sale of Class A Common Stock through J.P. Morgan Securities LLC

Aggregate market value of planned sale $16,087,590 Estimated value of 1,795,490 shares of Class A Common Stock

Class A shares outstanding 151,949,285 shares Shares of Class A Common Stock outstanding at time of notice

Sale on June 15, 2026 472,005 shares for $5,241,899 Past three-month sale of Class A Common Stock by Thomas M. Siebel

Sale on May 15, 2026 369,624 shares for $3,221,938 Past three-month sale of Class A Common Stock by Thomas M. Siebel

Key Terms

Form 144, Class A Common Stock, Stock Option Exercise, Aggregate market value

4 terms

Form 144 regulatory

"144: Filer Information | | | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Class A Common Stock financial

"Class A Common Stock | 07/14/2026 | Stock Option Exercise"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

Stock Option Exercise financial

"Class A Common Stock | 07/14/2026 | Stock Option Exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Aggregate market value financial

"Class A Common | J.P. Morgan Securities LLC ... | 1795490 | 16087590"

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.

What stock sale does Thomas M. Siebel plan for issuer AI under the Form 144?

Thomas M. Siebel plans a potential sale of up to 1,795,490 shares of AI Class A Common Stock. The shares are to be sold through J.P. Morgan Securities LLC, with an estimated aggregate market value of about $16,087,590 based on the notice.

How many AI Class A shares are outstanding in the Form 144 disclosure?

The notice states that 151,949,285 shares of AI Class A Common Stock are outstanding. This figure provides context for the planned sale of 1,795,490 shares and helps investors gauge the relative size of the proposed disposition.

What recent AI stock sales by Thomas M. Siebel are listed in the Form 144?

Several past three‑month sales are listed, including 472,005 shares sold on June 15, 2026 for $5,241,899. Another large transaction was 369,624 shares sold on May 15, 2026 for $3,221,938, along with several smaller sales of Class A shares.

How were the AI shares to be sold by Thomas M. Siebel acquired?

The shares to be sold were acquired through a Stock Option Exercise from the issuer for cash on July 14, 2026. This indicates the planned sale relates to shares obtained by exercising stock options rather than open‑market purchases.

Which broker is handling the planned AI share sale in the Form 144?

The planned sale of up to 1,795,490 AI Class A shares is to be handled by J.P. Morgan Securities LLC. The broker’s address is listed as 270 Park Avenue, 10th Floor, New York, NY 10017, and the shares are listed on the NYSE.

On what date is the proposed AI share sale by Thomas M. Siebel expected to begin?

The notice lists an approximate sale date of July 14, 2026 for the proposed disposition of 1,795,490 AI Class A Common shares. This date marks when sales under the Form 144 notice may commence on the NYSE.

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

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Accepted by SEC EDGAR 07/14/2026 - 04:11 PM EDT Learn about SEC filing dates

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	1795490	16087590	151949285	07/14/2026	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	07/14/2026	Stock Option Exercise	Issuer			1795490	07/14/2026	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	05/04/2026	27210	252205
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	05/15/2026	369624	3221938
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	05/18/2026	112014	968641
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	06/01/2026	17350	196322
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	06/12/2026	23570	257368
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	06/15/2026	472005	5241899

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	07/14/2026
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)