SIEBEL THOMAS M
CEO and Chairman of the Board
SIEBEL THOMAS M has filed 28 SEC Form 4 filings (100 transaction rows) across 1 company, with disclosures dating back to 2025. 24 of those filings fall inside the rolling window. Most recent filing: Oct 14, 2026.
On the most recent filing, SIEBEL THOMAS M is listed as CEO and Chairman of the Board at C3.ai, Inc. Inside the rolling window, SIEBEL THOMAS M reported no open-market purchases and 30 open-market sales totaling $70.0M in AI. The largest disclosed transaction in the window is a sale of 543,706 AI shares on Nov 11, 2025, worth $8.3M.
Companies traded
Other insiders at AI
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$70.0M
reported sales (SEC code S)
Companies
1
in the rolling window
| Source | |||||||
|---|---|---|---|---|---|---|---|
| AI | CEO and Chairman of the Board | Sale | 435,363 | $5.1M | Oct 14 | SEC ↗ | |
| AI | CEO and Chairman of the Board | Sale | 282,001 | $3.1M | Sep 17 | SEC ↗ | |
| AI | CEO and Chairman of the Board | Sale | 162,247 | $1.7M | Sep 17 | SEC ↗ | |
| AI | CEO and Chairman of the Board | Sale | 22,780 | $241K | Sep 16 | SEC ↗ | |
| AI | CEO and Chairman of the Board | Sale | 16,890 | $174K | Sep 3 | SEC ↗ | |
| AI | CEO and Chairman of the Board | Sale | 453,314 | $4.8M | Aug 13 | SEC ↗ | |
| AI | CEO and Chairman of the Board | Sale | 139,500 | $1.3M | Aug 5 | SEC ↗ | |
| AI | CEO and Chairman of the Board | Sale | 264,100 | $2.4M | Jul 16 | SEC ↗ | |
| AI | CEO and Chairman of the Board | Sale | 198,465 | $1.8M | Jul 16 | SEC ↗ | |
| AI | CEO and Chairman of the Board | Sale | 23,570 | $257K | Jun 15 | SEC ↗ | |
| AI | CEO and Chairman of the Board | Sale | 472,005 | $5.2M | Jun 15 | SEC ↗ | |
| AI | CEO and Chairman of the Board | Sale | 17,350 | $196K | Jun 3 | SEC ↗ | |
| AI | CEO and Chairman of the Board | Sale | 369,624 | $3.2M | May 19 | SEC ↗ | |
| AI | CEO and Chairman of the Board | Sale | 112,014 | $969K | May 19 | SEC ↗ | |
| AI | Executive Chairman | Sale | 27,210 | $252K | May 5 | SEC ↗ | |
| AI | Executive Chairman | Sale | 326,189 | $2.7M | Apr 15 | SEC ↗ | |
| AI | Executive Chairman | Sale | 165,278 | $1.4M | Apr 15 | SEC ↗ | |
| AI | Executive Chairman | Sale | 282,203 | $2.5M | Mar 19 | SEC ↗ | |
| AI | Executive Chairman | Sale | 219,294 | $1.9M | Mar 19 | SEC ↗ | |
| AI | Executive Chairman | Sale | 23,435 | $213K | Mar 13 | SEC ↗ | |
| AI | Executive Chairman | Sale | 17,655 | $138K | Mar 3 | SEC ↗ | |
| AI | Executive Chairman | Sale | 511,732 | $6.0M | Feb 12 | SEC ↗ | |
| AI | Executive Chairman | Sale | 27,605 | $298K | Feb 3 | SEC ↗ | |
| AI | Executive Chairman | Sale | 522,175 | $7.1M | Jan 15 | SEC ↗ | |
| AI | Executive Chairman | Sale | 392,064 | $5.6M | Dec 18 | SEC ↗ |
Earlier trades
Open-market purchases and sales filed before the rolling 365-day window, kept from the original Form 4 filings.
| Date | Ticker | Type | Value |
|---|---|---|---|
| Oct 14, 2025 | AI | Sale | $10.4M |
| Sep 16, 2025 | AI | Sale | $9.8M |
| Sep 12, 2025 | AI | Sale | $1.5M |
| Sep 2, 2025 | AI | Sale | $284K |
Frequently asked questions
How many SEC Form 4 filings has SIEBEL THOMAS M made?
SIEBEL THOMAS M has filed 28 SEC Form 4 filings (100 transaction rows) across 1 company since 2025.
Which companies does SIEBEL THOMAS M trade?
SIEBEL THOMAS M has filed SEC Form 4 disclosures for 1 company, including AI.
When was SIEBEL THOMAS M's most recent SEC Form 4 filing?
SIEBEL THOMAS M's most recent SEC Form 4 filing on Tracefour is dated Oct 14, 2026.
What is SIEBEL THOMAS M's job title?
On the most recent SEC Form 4 filings tracked by Tracefour, SIEBEL THOMAS M is listed as CEO and Chairman of the Board.
What is SIEBEL THOMAS M's total buy and sell value in the current window?
Inside the rolling retention window, SIEBEL THOMAS M bought $0 and sold $70.0M based on SEC Form 4 filings.
What was SIEBEL THOMAS M's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 543,706 AI shares on 2025-11-11, worth $8.3M, per SEC Form 4 filings.