FilingsForm 4

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

From the public record

Filed Jun 15, 2026

Value$5.5 million

Shares495,575

Average price$11.10

FiledJun 15

The record

Issuer: C3.ai (CIK 1577526, filed as C3.ai, Inc.)
Form: 4
Accession: 0001577526-26-000060
Filed: Jun 15, 2026
Period of report: Jun 11, 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: Ticked
Line 1: M (exercise of a derivative security) · 44,767 Class A Common Stock · Jun 11, 2026 · acquired, directly · 767,129 held after · footnote F1
Line 2: S (sale) · 23,570 Class A Common Stock at $10.92 · Jun 12, 2026 · disposed, directly · 743,559 held after · footnotes F2 and F3
Line 3: G (gift) · 21,197 Class A Common Stock at $0.00 · Jun 15, 2026 · disposed, directly · 722,362 held after
Line 4: G (gift) · 21,197 Class A Common Stock at $0.00 · Jun 15, 2026 · acquired, indirectly, See Footnote · 6,923,353 held after · footnote F4
Line 5: M (exercise of a derivative security) · 472,005 Class A Common Stock at $2.04 · Jun 15, 2026 · acquired, directly · 1,194,367 held after · footnote F5
Line 6: S (sale) · 472,005 Class A Common Stock at $11.11 · Jun 15, 2026 · disposed, directly · 722,362 held after · footnotes F5 and F6
Derivative line 1: M (exercise of a derivative security) · 44,767 Restricted Stock Units at $0.00 · Jun 11, 2026 · disposed, directly · 223,994 held after · footnotes F1 and F11
Derivative line 2: M (exercise of a derivative security) · 472,005 Stock Option (Right to Buy) at $0.00 · Jun 15, 2026 · disposed, directly · 329,075 held after · footnotes F5 and F12
Footnote F1: Each Restricted Stock Unit (RSU) represents a contingent right to receive one share of the Issuer's Class A Common Stock upon settlement.
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 RSUs reported herein.
Footnote F3: The price reported is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $10.75 to $11.06, 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 transaction being reported was effected pursuant to a previously established Rule 10b5-1 trading plan dated September 20, 2024.
Footnote F6: The price reported is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $10.845 to $11.34, 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 F7: The shares are held by First Virtual Holdings, LLC, of which the Reporting Person is Chairman.
Footnote F8: The shares are held by Siebel Asset Management, L.P., of which the Reporting Person is the general partner.
Footnote F9: The shares are held by Siebel Asset Management III, L.P., of which the Reporting Person is the general partner.
Footnote F10: The shares are held by The Siebel 2011 Irrevocable Children's Trust, of which the Reporting Person is co-trustee.
Footnote F11: 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.
Footnote F12: Fully vested.