Key facts
- This page summarizes Thomas M. Siebel's Form 4 filing for C3.ai, Inc. (AI).
- 5 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 04 Aug 2026, 21:02.
Thomas M. Siebel - 02 Aug 2026 Form 4 Insider Report for C3.ai, Inc. (AI)
- Reporting relationship
- CEO and Chairman of the Board, Director, 10%+ Owner
- Issuer ticker
- AI
- Reported as of
- 02 Aug 2026
- Net transaction value
- -$1,340,595
- SEC form
- 4
- Accepted by SEC
- 04 Aug 2026, 21:02:06 UTC
- Prior SEC filing
- 16 Jul 2026
- Next SEC filing
- 13 Aug 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Tom MacMitchell
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Thomas M. Siebel filed Form 4 for C3.ai, Inc. (AI) on 04 Aug 2026.
Change
- Previous filing in this sequence was filed on 16 Jul 2026.
- Current net transaction value: -$1,340,595.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001031530
Primary reporting owner
SIEBEL THOMAS M
- Relationship
- CEO and Chairman of the Board, Director, 10%+ Owner
- Address
- C/O C3.AI, INC., 1400 SEAPORT BLVD, SUITE 500, REDWOOD CITY
- Signature
- /s/ Tom MacMitchell
- Signature date
- 04 Aug 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
AI
transaction
Class A Common Stock
Options Exercise
- Transaction value
- Shares
- +283,334
- Change %
- +39%
- Price
- Shares after
- 1,005,696
- Date
- 02 Aug 2026
- Ownership
- Direct
- Footnotes
- F1
AI
transaction
Class A Common Stock
Sale
- Transaction value
- $1,340,595
- Shares
- -139,500
- Change %
- -14%
- Price
- $9.61
- Shares after
- 866,196
- Date
- 03 Aug 2026
- Ownership
- Direct
- Footnotes
- F2, F3
AI
transaction
Class A Common Stock
Gift
- Transaction value
- Shares
- -143,834
- Change %
- -17%
- Price
- $0.000000*
- Shares after
- 722,362
- Date
- 04 Aug 2026
- Ownership
- Direct
AI
transaction
Class A Common Stock
Gift
- Transaction value
- Shares
- +143,834
- Change %
- +2.1%
- Price
- $0.000000*
- Shares after
- 7,067,187
- Date
- 04 Aug 2026
- Ownership
- See Footnote
- Footnotes
- F4
AI
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 9,216
- Date
- 02 Aug 2026
- Ownership
- See Footnote
- Footnotes
- F5
AI
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 170,294
- Date
- 02 Aug 2026
- Ownership
- See Footnote
- Footnotes
- F6
AI
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 72,695
- Date
- 02 Aug 2026
- Ownership
- See Footnote
- Footnotes
- F7
AI
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 1,237,115
- Date
- 02 Aug 2026
- Ownership
- See Footnote
- Footnotes
- F8
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
AI
transaction
Derivative
Performance Restricted Stock Units
Options Exercise
- Transaction value
- Shares
- -283,334
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 02 Aug 2026
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 283,334
- Exercise price
- Footnotes
- F1
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 8 footnotes
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.