[144] C3.ai, Inc. SEC Filing

Rhea-AI Filing Summary

Thomas M. Siebel reported proposed and recent sales of Class A Common Stock under a Form 144. The notice lists 74,000 shares to be sold on 05/04/2026 (RSU vest) through J.P. Morgan Securities LLC. The filing also lists multiple past dispositions: 17,655 on 03/02/2026, 23,435 on 03/12/2026, 282,203 on 03/17/2026, 219,294 on 03/18/2026, 326,189 on 04/13/2026, and 165,278 on 04/14/2026. The rows include remaining share figures after each sale (e.g., 137,607, 213,455, 2,500,996, 1,900,204, 2,711,055, 1,403,706 respectively).

Insights

Corporate Governance Specialist

Form 144 reports planned sale plus recent insider dispositions by Thomas M. Siebel.

The filing lists a proposed sale of 74,000 shares tied to an RSU vest and multiple recent sales with per‑trade quantities and resulting post‑trade share figures. These are routine affiliate disclosures required before resale.

Cash‑flow treatment and timing beyond the listed trade date are not provided in the excerpt; subsequent transaction notices will show execution details.

Key Figures

Proposed resale: 74,000 shares Prior sale 03/17/2026: 282,203 shares Prior sale 04/13/2026: 326,189 shares +1 more

4 metrics

Proposed resale 74,000 shares to be sold on 05/04/2026 (RSU Vest)

Prior sale 03/17/2026 282,203 shares disposition on 03/17/2026

Prior sale 04/13/2026 326,189 shares disposition on 04/13/2026

Post‑sale holding example 2,711,055 shares reported after the 04/13/2026 sale

Key Terms

Form 144, RSU Vest, Class A Common Stock

3 terms

Form 144 regulatory

"reported proposed and recent sales of Class A Common Stock"

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.

RSU Vest financial

"05/04/2026 | RSU Vest | Issuer"

Class A Common Stock market

"Class A Common Stock | 05/04/2026"

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.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	74000	677840	141791230	05/04/2026	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	05/04/2026	RSU Vest	Issuer			74000	05/04/2026	NA

* 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	03/02/2026	17655	137607
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	03/12/2026	23435	213455
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	03/17/2026	282203	2500996
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	03/18/2026	219294	1900204
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	04/13/2026	326189	2711055
Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063	Class A Common Stock	04/14/2026	165278	1403706

144: Remarks and Signature

Remarks

Date of Notice

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)