FilingsForm 4

Thomas Siebel sold 511,732 C3.ai shares for $5.97 million on Feb 10, 2026

From the public record1 min read

Published Oct 28, 2026 · 09:45 UTCFiled Feb 12, 2026

Value$5.97 million

Shares511,732

Average price$11.66

FiledFeb 12

Written by Claude Sonnet 5.5, an AI model, from public records. Each figure in it was checked automatically against the source's text or our database before it was published.

A Form 4, the form an insider files when trading a company's shares, showed Thomas Siebel selling 511,732 Class A shares of C3.ai on Feb 10, 2026, at an average $11.66 a share, or $5.97 million. The form listed an exercise of stock options for 511,732 shares that day and stated 722,362 shares held directly after the last sale line. The form named Siebel as a director, an officer (Executive Chairman) and an owner of more than 10% of the shares, and a footnote said the reported transaction was made under a previously established Rule 10b5-1 trading plan dated Sep 20, 2024. The source is the Form 4 filed with the SEC on Feb 12, 2026.1 2 3 4 5 6 7 8 9 10 11 12

How each figure was checked12 facts

C3.ai Form 4 0001577526-26-000005: ownerThomas Siebel (filed as SIEBEL THOMAS M)Our database
C3.ai Form 4 0001577526-26-000005: sidesaleOur database
C3.ai Form 4 0001577526-26-000005: shares511,732Our database
C3.ai Form 4 0001577526-26-000005: average price$11.66Our database
C3.ai Form 4 0001577526-26-000005: value$5.97 millionOur database
C3.ai Form 4 0001577526-26-000005: first dateFeb 10, 2026Our database
C3.ai Form 4 0001577526-26-000005, line 1exercise of a derivative security (code M): 511,732 shares acquired on Feb 10, 2026 at $2.04 per share; held directly; 1,234,094 owned after the lineOur database
C3.ai Form 4 0001577526-26-000005, derivative line 1derivative line, exercise of a derivative security (code M): 511,732 shares disposed on Feb 10, 2026 at $0 per share; held directly; 2,275,682 owned after the lineOur database
C3.ai Form 4 0001577526-26-000005: shares afterafter the last sale line the form states 722362 shares of Class A Common Stock held directlyOur database
C3.ai Form 4 0001577526-26-000005: relationshipdirector, officer (Executive Chairman) and owner of more than 10% of the sharesOur database
Footnote F1 of the Form 4 filed Feb 12, 2026 (it is attached to that document's line N1, N2, D1)September 20, 2024Footnotes and remarks of the Form 4 filed Feb 12, 2026 ↗
C3.ai Form 4 0001577526-26-000005: filed onFeb 12, 2026Our database

The record

Issuer: C3.ai (CIK 1577526, filed as C3.ai, Inc.)
Form: 4
Accession: 0001577526-26-000005
Filed: Feb 12, 2026
Period of report: Feb 10, 2026
Reporting owner: Thomas Siebel (CIK 1031530, filed as SIEBEL THOMAS M)
Relationship: director, officer (Executive Chairman) and owner of more than 10% of the shares
Rule 10b5-1 checkbox: Ticked
Line 1: M (exercise of a derivative security) · 511,732 Class A Common Stock at $2.04 · Feb 10, 2026 · acquired, directly · 1,234,094 held after · footnote F1
Line 2: S (sale) · 511,732 Class A Common Stock at $11.66 · Feb 10, 2026 · disposed, directly · 722,362 held after · footnotes F1 and F2
Derivative line 1: M (exercise of a derivative security) · 511,732 Stock Option (Right to Buy) at $0.00 · Feb 10, 2026 · disposed, directly · 2,275,682 held after · footnotes F1 and F8
Footnote F1: The transaction being reported was effected pursuant to a previously established Rule 10b5-1 trading plan dated September 20, 2024.
Footnote F2: The price reported is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $11.46 to $12.05, 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 F3: The shares are held by The Siebel Living Trust u/a/d 7/27/93, a amended, of which the Reporting Person is trustee
Footnote F4: The shares are held by First Virtual Holdings, LLC, of which the Reporting Person is Chairman.
Footnote F5: The shares are held by Siebel Asset Management, L.P., of which the Reporting Person is the general partner.
Footnote F6: The shares are held by Siebel Asset Management III, L.P., of which the Reporting Person is the general partner.
Footnote F7: The shares are held by The Siebel 2011 Irrevocable Children's Trust, of which the Reporting Person is co-trustee.
Footnote F8: Fully vested.