Siebel Thomas M insider trades
Siebel Thomas M has filed 67 Form 4s with the SEC that we hold, all for C3.ai, Inc. (AI), as CEO and Chairman of the Board, Director, 10% owner. Across all of them we count 0 purchases worth $0 and 103 sales worth $370.3M reported on Form 4. In the last 12 months: 0 purchases ($0) and 32 sales ($75.3M). The largest single trade was a sale of 575,874 shares of C3.ai, Inc. worth $16.4M, dated 2025-07-18. Of 4 sales filed since we began reading the 10b5-1 checkbox, 2 (50%) were marked as made under a 10b5-1 trading plan. The first filing on our record is dated 2021-07-15 and the latest 2026-10-02.
C3.ai, Inc. (AI)
CEO and Chairman of the Board, Director, 10% owner · 67 filings · 103 purchases and sales
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2021-07-13 | S, sale reported on Form 4 | 132,086 | $7.3M | 2021-07-15 |
| 2021-07-13 | S, sale reported on Form 4 | 3,350 | $190.9K | 2021-07-15 |
| 2021-07-13 | S, sale reported on Form 4 | 104,017 | $5.9M | 2021-07-15 |
| 2021-07-14 | S, sale reported on Form 4 | 101,521 | $5.4M | 2021-07-15 |
| 2021-07-14 | S, sale reported on Form 4 | 243,626 | $12.6M | 2021-07-15 |
| 2021-07-14 | S, sale reported on Form 4 | 62,176 | $3.3M | 2021-07-15 |
| 2021-07-14 | S, sale reported on Form 4 | 16,815 | $918.9K | 2021-07-15 |
| 2021-07-14 | S, sale reported on Form 4 | 3,700 | $205.6K | 2021-07-15 |
| 2021-08-16 | S, sale reported on Form 4 | 7,900 | $382.4K | 2021-08-18 |
| 2021-08-16 | S, sale reported on Form 4 | 129,509 | $6.1M | 2021-08-18 |
| 2021-08-16 | S, sale reported on Form 4 | 160,224 | $7.5M | 2021-08-18 |
| 2021-08-17 | S, sale reported on Form 4 | 229,215 | $10.4M | 2021-08-18 |
| 2021-08-17 | S, sale reported on Form 4 | 100 | $4.6K | 2021-08-18 |
| 2021-08-18 | S, sale reported on Form 4 | 61,323 | $2.8M | 2021-08-18 |
| 2021-08-18 | S, sale reported on Form 4 | 65,674 | $3.0M | 2021-08-18 |
| 2021-09-13 | S, sale reported on Form 4 | 41,415 | $2.1M | 2021-09-15 |
| 2021-09-13 | S, sale reported on Form 4 | 197,253 | $9.8M | 2021-09-15 |
| 2021-09-13 | S, sale reported on Form 4 | 98,698 | $4.8M | 2021-09-15 |
| 2021-09-14 | S, sale reported on Form 4 | 22,450 | $1.1M | 2021-09-15 |
| 2021-09-14 | S, sale reported on Form 4 | 205,650 | $10.0M | 2021-09-15 |
| 2021-09-15 | S, sale reported on Form 4 | 5,300 | $270.0K | 2021-09-15 |
| 2021-09-15 | S, sale reported on Form 4 | 23,334 | $1.1M | 2021-09-15 |
| 2021-09-15 | S, sale reported on Form 4 | 17,300 | $869.7K | 2021-09-15 |
| 2021-09-15 | S, sale reported on Form 4 | 29,466 | $1.4M | 2021-09-15 |
| 2021-10-13 | S, sale reported on Form 4 | 81,376 | $3.7M | 2021-10-15 |
| 2021-10-13 | S, sale reported on Form 4 | 104,424 | $4.9M | 2021-10-15 |
| 2021-10-14 | S, sale reported on Form 4 | 129,623 | $6.1M | 2021-10-15 |
| 2021-10-14 | S, sale reported on Form 4 | 5,126 | $242.4K | 2021-10-15 |
| 2021-10-15 | S, sale reported on Form 4 | 131,018 | $6.0M | 2021-10-15 |
| 2021-10-15 | S, sale reported on Form 4 | 32,582 | $1.5M | 2021-10-15 |
| 2021-11-15 | S, sale reported on Form 4 | 60,779 | $3.0M | 2021-11-17 |
| 2021-11-15 | S, sale reported on Form 4 | 237,179 | $11.5M | 2021-11-17 |
| 2021-11-15 | S, sale reported on Form 4 | 11,600 | $593.9K | 2021-11-17 |
| 2021-11-15 | S, sale reported on Form 4 | 59,967 | $3.0M | 2021-11-17 |
| 2021-11-16 | S, sale reported on Form 4 | 106,635 | $5.0M | 2021-11-17 |
| 2021-11-16 | S, sale reported on Form 4 | 10,816 | $524.0K | 2021-11-17 |
| 2021-11-16 | S, sale reported on Form 4 | 128,512 | $6.2M | 2021-11-17 |
| 2025-01-14 | S, sale reported on Form 4 | 319,629 | $9.9M | 2025-01-16 |
| 2025-01-14 | S, sale reported on Form 4 | 90,202 | $2.8M | 2025-01-16 |
| 2025-01-15 | S, sale reported on Form 4 | 222,212 | $7.1M | 2025-01-16 |
| 2025-01-15 | S, sale reported on Form 4 | 33,389 | $1.1M | 2025-01-16 |
| 2025-02-11 | S, sale reported on Form 4 | 334,227 | $10.8M | 2025-02-13 |
| 2025-02-11 | S, sale reported on Form 4 | 120,748 | $4.2M | 2025-02-13 |
| 2025-02-11 | S, sale reported on Form 4 | 97,447 | $3.3M | 2025-02-13 |
| 2025-02-12 | S, sale reported on Form 4 | 20,828 | $678.6K | 2025-02-13 |
| 2025-02-12 | S, sale reported on Form 4 | 78,873 | $2.5M | 2025-02-13 |
| 2025-03-14 | S, sale reported on Form 4 | 294,116 | $6.3M | 2025-03-18 |
| 2025-03-17 | S, sale reported on Form 4 | 216,974 | $4.7M | 2025-03-18 |
| 2025-03-18 | S, sale reported on Form 4 | 800 | $17.8K | 2025-03-18 |
| 2025-03-18 | S, sale reported on Form 4 | 127,191 | $2.8M | 2025-03-18 |
| 2025-04-14 | S, sale reported on Form 4 | 311,488 | $6.3M | 2025-04-16 |
| 2025-04-14 | S, sale reported on Form 4 | 44,930 | $935.0K | 2025-04-16 |
| 2025-04-14 | S, sale reported on Form 4 | 14,639 | $294.2K | 2025-04-16 |
| 2025-04-14 | S, sale reported on Form 4 | 2,112 | $44.0K | 2025-04-16 |
| 2025-04-15 | S, sale reported on Form 4 | 228,201 | $4.5M | 2025-04-16 |
| 2025-04-15 | S, sale reported on Form 4 | 10,728 | $213.7K | 2025-04-16 |
| 2025-04-16 | S, sale reported on Form 4 | 13,567 | $264.1K | 2025-04-16 |
| 2025-04-16 | S, sale reported on Form 4 | 634 | $12.3K | 2025-04-16 |
| 2025-05-02 | S, sale reported on Form 4 | 27,010 | $601.5K | 2025-05-05 |
| 2025-05-13 | S, sale reported on Form 4 | 341,698 | $8.2M | 2025-05-15 |
| 2025-05-14 | S, sale reported on Form 4 | 272,079 | $6.5M | 2025-05-15 |
| 2025-06-02 | S, sale reported on Form 4 | 17,000 | $447.1K | 2025-06-03 |
| 2025-06-11 | S, sale reported on Form 4 | 590,995 | $14.8M | 2025-06-12 |
| 2025-06-11 | S, sale reported on Form 4 | 10,503 | $270.6K | 2025-06-12 |
| 2025-07-18 | S, sale reported on Form 4 | 575,874 | $16.4M | 2025-07-22 |
| 2025-07-18 | S, sale reported on Form 4 | 13,594 | $397.5K | 2025-07-22 |
| 2025-08-04 | S, sale reported on Form 4 | 336,000 | $7.7M | 2025-08-05 |
| 2025-08-12 | S, sale reported on Form 4 | 577,678 | $9.7M | 2025-08-14 |
| 2025-09-02 | S, sale reported on Form 4 | 17,200 | $283.6K | 2025-09-03 |
| 2025-09-12 | S, sale reported on Form 4 | 92,000 | $1.5M | 2025-09-15 |
| 2025-09-16 | S, sale reported on Form 4 | 566,125 | $9.8M | 2025-09-17 |
| 2025-10-14 | S, sale reported on Form 4 | 554,802 | $10.4M | 2025-10-16 |
| 2025-11-03 | S, sale reported on Form 4 | 27,545 | $476.5K | 2025-11-04 |
| 2025-11-11 | S, sale reported on Form 4 | 543,706 | $8.3M | 2025-11-12 |
| 2025-12-02 | S, sale reported on Form 4 | 17,000 | $241.6K | 2025-12-03 |
| 2025-12-12 | S, sale reported on Form 4 | 23,000 | $366.6K | 2025-12-15 |
| 2025-12-16 | S, sale reported on Form 4 | 392,064 | $5.6M | 2025-12-18 |
| 2025-12-17 | S, sale reported on Form 4 | 140,768 | $2.0M | 2025-12-18 |
| 2026-01-13 | S, sale reported on Form 4 | 212,586 | $2.9M | 2026-01-15 |
| 2026-01-13 | S, sale reported on Form 4 | 309,589 | $4.2M | 2026-01-15 |
| 2026-02-02 | S, sale reported on Form 4 | 27,605 | $298.4K | 2026-02-03 |
| 2026-02-10 | S, sale reported on Form 4 | 511,732 | $6.0M | 2026-02-12 |
| 2026-03-02 | S, sale reported on Form 4 | 17,655 | $137.5K | 2026-03-03 |
| 2026-03-12 | S, sale reported on Form 4 | 23,435 | $213.5K | 2026-03-13 |
| 2026-03-17 | S, sale reported on Form 4 | 282,203 | $2.5M | 2026-03-19 |
| 2026-03-18 | S, sale reported on Form 4 | 219,294 | $1.9M | 2026-03-19 |
| 2026-04-13 | S, sale reported on Form 4 | 326,189 | $2.7M | 2026-04-15 |
| 2026-04-14 | S, sale reported on Form 4 | 165,278 | $1.4M | 2026-04-15 |
| 2026-05-04 | S, sale reported on Form 4 | 27,210 | $252.2K | 2026-05-05 |
| 2026-05-15 | S, sale reported on Form 4 | 369,624 | $3.2M | 2026-05-19 |
| 2026-05-18 | S, sale reported on Form 4 | 112,014 | $968.9K | 2026-05-19 |
| 2026-06-02 | S, sale reported on Form 4 | 17,350 | $196.4K | 2026-06-03 |
| 2026-06-12 | S, sale reported on Form 4 | 23,570 | $257.4K | 2026-06-15 |
| 2026-06-15 | S, sale reported on Form 4 | 472,005 | $5.2M | 2026-06-15 |
| 2026-07-14 | S, sale reported on Form 4 | 264,100 | $2.4M | 2026-07-16 |
| 2026-07-15 | S, sale reported on Form 4 | 64,975 | $604.9K | 2026-07-16 |
| 2026-07-15 | S, sale reported on Form 4 | 133,490 | $1.2M | 2026-07-16 |
| 2026-08-03 | S, sale reported on Form 4 | 139,500 | $1.3M | 2026-08-04 |
| 2026-08-11 | S, sale reported on Form 4 | 453,314 | $4.8M | 2026-08-13 |
| 2026-09-02 | S, sale reported on Form 4 | 16,890 | $174.0K | 2026-09-03 |
Newest 100 of 103
Source
Counted from the Form 4 filings this reporting owner (SEC CIK 1031530) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
Privacy · Terms