C3.ai, Inc. — Director's Dealing 2025

Dec 16, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: C3.ai, Inc. (AI)
CIK: 0001577526
Period of Report: 2025-12-11

Reporting Person: SIEBEL THOMAS M (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-11	Class A Common Stock	M	44767	—	Acquired	44767	Direct
2025-12-11	Class A Common Stock	A	722362	—	Acquired	767129	Direct
2025-12-12	Class A Common Stock	S	23000	$15.94	Disposed	744129	Direct
2025-12-15	Class A Common Stock	G	21767	—	Disposed	722362	Direct
2025-12-15	Class A Common Stock	G	21767	—	Acquired	1474677	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-12-11	Restricted Stock Units	$	M	44767	Disposed		Class A Common Stock (44767)	Direct
2025-12-11	Stock Option (Right to Buy)	$17.512	A	1133474	Acquired	2035-12-10	Class A Common Stock (1133474)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	9216	Indirect
Class A Common Stock	170294	Indirect
Class A Common Stock	72695	Indirect
Class A Common Stock	1237115	Indirect

Footnotes

F1: Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of the Issuer's Class A Common Stock upon settlement.

F2: Represents the grant of RSUs. 33% of the RSUs vest on December 11, 2026 and 1/12th of the RSUs vest on each quarterly anniversary thereafter, so long as the Reporting Person continues to provide services through such vesting date.

F3: Pursuant to the Issuer's policies and practice, these shares of Class A Common Stock were automatically withheld and sold by the Issuer to satisfy the Reporting Person's tax withholding obligations related to the vesting of RSUs reported herein.

F4: The price reported is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $15.78 to $16.00, 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.

F5: The shares are held by The Siebel Living Trust u/a/d 7/27/93, as amended, of which the Reporting Person is trustee.

F6: The shares are held by First Virtual Holdings, LLC, of which the Reporting Person is Chairman.

F7: The shares are held by Siebel Asset Management, L.P., of which the Reporting Person is the general partner.

F8: The shares are held by Siebel Asset Management III, L.P., of which the Reporting Person is the general partner.

F9: The shares are held by The Siebel 2011 Irrevocable Children's Trust, of which the Reporting Person is co-trustee.

F10: 1/3rd of the RSUs vested on September 11, 2025 and 1/12th of the RSUs shall vest quarterly thereafter, so long as the Reporting Person continues to provide services through such vesting dates.

F11: 1/3rd of the option shall vest on each of December 11, 2026, December 11, 2027 and December 11, 2028, so long as the Reporting Person continues to provide services as the Executive Chairman, or a similar role through such vesting dates.