FilingsForm 4

C3.ai · Form 4 · Chief executive officer · Sale

From the public record

Filed Aug 4, 2026

Value$1.34 million

Shares139,500

Average price$9.61

FiledAug 4

The record

Issuer: C3.ai (CIK 1577526, filed as C3.ai, Inc.)
Form: 4
Accession: 0001577526-26-000094
Filed: Aug 4, 2026
Period of report: Aug 2, 2026
Reporting owner: Thomas Siebel (CIK 1031530, filed as SIEBEL THOMAS M)
Relationship: director, officer (CEO and Chairman of the Board) and owner of more than 10% of the shares
Rule 10b5-1 checkbox: Not ticked
Line 1: M (exercise of a derivative security) · 283,334 Class A Common Stock · Aug 2, 2026 · acquired, directly · 1,005,696 held after · footnote F1
Line 2: S (sale) · 139,500 Class A Common Stock at $9.61 · Aug 3, 2026 · disposed, directly · 866,196 held after · footnotes F2 and F3
Line 3: G (gift) · 143,834 Class A Common Stock at $0.00 · Aug 4, 2026 · disposed, directly · 722,362 held after
Line 4: G (gift) · 143,834 Class A Common Stock at $0.00 · Aug 4, 2026 · acquired, indirectly, See Footnote · 7,067,187 held after · footnote F4
Derivative line 1: M (exercise of a derivative security) · 283,334 Performance Restricted Stock Units at $0.00 · Aug 2, 2026 · disposed, directly · 0 held after · footnote F1
Footnote F1: Each Performance Restricted Stock Unit (PRSU) represents a contingent right to receive one share of the Issuer's Class A Common Stock. The PRSUs vest upon the Issuer's Class A Common Stock achieving a specified price per share.
Footnote F2: 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 PRSUs reported herein.
Footnote F3: The price reported is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $9.5 to $9.685, 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.
Footnote 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.
Footnote F5: The shares are held by First Virtual Holdings, LLC, of which the Reporting Person is Chairman.
Footnote F6: The shares are held by Siebel Asset Management, L.P., of which the Reporting Person is the general partner.
Footnote F7: The shares are held by Siebel Asset Management III, L.P., of which the Reporting Person is the general partner.
Footnote F8: The shares are held by The Siebel 2011 Irrevocable Children's Trust, of which the Reporting Person is co-trustee.