Siebel Thomas M: insider trades.
Siebel Thomas M reported 24 non-derivative transactions on 6 SEC ownership filings in Q3 2026: 0 open-market purchases and 9 sales ($15.5M), across 1 company.
- Transactions
- 24
- Purchases (P)
- 0
- Sales (S)
- 9
- Companies
- 1
- Name as filed
- SIEBEL THOMAS M
Companies
| Company | Relationship | Transactions |
|---|---|---|
| C3.ai, Inc. (AI) | Director, Officer, TenPercentOwner · CEO and Chairman of the Board | 24 |
Transactions
| Date | Company | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-09-16 | C3.ai, Inc. | S | 162,247 | $10.54 | 722,362 | Form 4 |
| 2026-09-16 | C3.ai, Inc. | M | 162,247 | $3.9 | 884,609 | Form 4 |
| 2026-09-15 | C3.ai, Inc. | M | 282,001 | $3.9 | 1,004,363 | Form 4 |
| 2026-09-15 | C3.ai, Inc. | S | 282,001 | $10.9 | 722,362 | Form 4 |
| 2026-09-14 | C3.ai, Inc. | G | 21,986 | $0 | 722,362 | Form 4 |
| 2026-09-14 | C3.ai, Inc. | S | 22,780 | $10.56 | 744,348 | Form 4 |
| 2026-09-14 | C3.ai, Inc. | G | 21,986 | $0 | 7,105,019 | Form 4 |
| 2026-09-11 | C3.ai, Inc. | M | 44,766 | — | 767,128 | Form 4 |
| 2026-09-03 | C3.ai, Inc. | G | 15,846 | $0 | 7,083,033 | Form 4 |
| 2026-09-03 | C3.ai, Inc. | G | 15,846 | $0 | 722,362 | Form 4 |
| 2026-09-02 | C3.ai, Inc. | S | 16,890 | $10.3 | 738,208 | Form 4 |
| 2026-09-01 | C3.ai, Inc. | M | 32,736 | — | 755,098 | Form 4 |
| 2026-08-11 | C3.ai, Inc. | S | 453,314 | $10.51 | 722,362 | Form 4 |
| 2026-08-11 | C3.ai, Inc. | M | 453,314 | $3.9 | 1,175,676 | Form 4 |
| 2026-08-04 | C3.ai, Inc. | G | 143,834 | $0 | 7,067,187 | Form 4 |
| 2026-08-04 | C3.ai, Inc. | G | 143,834 | $0 | 722,362 | Form 4 |
| 2026-08-03 | C3.ai, Inc. | S | 139,500 | $9.61 | 866,196 | Form 4 |
| 2026-08-02 | C3.ai, Inc. | M | 283,334 | — | 1,005,696 | Form 4 |
| 2026-07-15 | C3.ai, Inc. | S | 64,975 | $9.31 | 722,362 | Form 4 |
| 2026-07-15 | C3.ai, Inc. | S | 133,490 | $9.32 | 722,362 | Form 4 |
| 2026-07-15 | C3.ai, Inc. | M | 133,490 | $3.9 | 855,852 | Form 4 |
| 2026-07-15 | C3.ai, Inc. | M | 64,975 | $2.04 | 787,337 | Form 4 |
| 2026-07-14 | C3.ai, Inc. | M | 264,100 | $2.04 | 986,462 | Form 4 |
| 2026-07-14 | C3.ai, Inc. | S | 264,100 | $9.07 | 722,362 | Form 4 |
Questions
What stock did Siebel Thomas M buy or sell?
Siebel Thomas M reported 24 non-derivative transactions on 6 SEC ownership filings in Q3 2026: 0 open-market purchases and 9 sales ($15.5M), across 1 company.
Is Siebel Thomas M the same person as other filers with this name?
This page covers SEC CIK 1031530 only. The SEC assigns each reporting owner a CIK, and people with the same name have different CIKs.
Source: SEC Insider Transactions Data Sets, Q3 2026. Reported as filed; we do not assess intent, performance or compliance. All filings for this CIK on SEC.gov.
Plain-text version for agents and LLMs: /insiders/siebel-thomas-m-1031530.md
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