SIEBEL THOMAS M

Director at SIEBEL SYSTEMS INC · on record since Feb 2, 2006
Director at C3.ai, Inc. · on record since Apr 15, 2026
10% owner at C3.ai, Inc. · on record since Apr 15, 2026
10% owner at SIEBEL SYSTEMS INC · on record since Nov 6, 2003
Chairman of the Board at SIEBEL SYSTEMS INC · on record since Sep 8, 2004
CEO and Chairman of the Board at C3.ai, Inc. · on record since Dec 11, 2020

Insider trading activity of SIEBEL THOMAS M

Transactions on record: 719; since Nov 6, 2003

Open-market buys: 0

Open-market sells: 368; $709.3M

Companies traded: 2; last filing Oct 2, 2026

Figures computed from official regulatory filings — .

Companies where SIEBEL THOMAS M has traded

C3.ai, Inc.409 tx · $735.4M · Oct 2, 2026
SIEBEL SYSTEMS INC310 tx · $69.9M · Feb 2, 2006

Track record of SIEBEL THOMAS M

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of SIEBEL THOMAS M

Co-insiders of SIEBEL THOMAS M

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Src
C3.ai, Inc.Listing on record	Oct 2, 2026	GiftD (derivative)	106,793	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	Gift	239	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	Gift	239	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	Gift	239	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	GiftD (derivative)	106,793	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	Gift	239	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	GiftD (derivative)	106,793	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	GiftD (derivative)	106,793	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 17, 2026	Exercise	162,247	3.90 USD	$632.8K	SEC
C3.ai, Inc.Listing on record	Sep 17, 2026	Sell	-282,001	10.90 USD	$3.1M	SEC
C3.ai, Inc.Listing on record	Sep 17, 2026	ExerciseD (derivative)	-162,247	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 17, 2026	ExerciseD (derivative)	-282,001	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 17, 2026	Exercise	282,001	3.90 USD	$1.1M	SEC
C3.ai, Inc.Listing on record	Sep 17, 2026	Sell	-162,247	10.54 USD	$1.7M	SEC
C3.ai, Inc.Listing on record	Sep 15, 2026	ExerciseD (derivative)	-44,766	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 15, 2026	Sell	-22,780	10.56 USD	$240.6K	SEC
C3.ai, Inc.Listing on record	Sep 15, 2026	Gift	-21,986	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 15, 2026	Exercise	44,766	—	n/a (No price was disclosed in the filing)	SEC
C3.ai, Inc.Listing on record	Sep 15, 2026	Gift	21,986	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 3, 2026	ExerciseD (derivative)	-32,736	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 3, 2026	Gift	-15,846	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 3, 2026	Exercise	32,736	—	n/a (No price was disclosed in the filing)	SEC
C3.ai, Inc.Listing on record	Sep 3, 2026	Sell	-16,890	10.30 USD	$174K	SEC
C3.ai, Inc.Listing on record	Sep 3, 2026	Gift	15,846	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Aug 13, 2026	Exercise	453,314	3.90 USD	$1.8M	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
C3.ai, Inc.Listing on record	Oct 2, 2026	GiftD (derivative)	106,793	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	Gift	239	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	Gift	239	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	Gift	239	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	GiftD (derivative)	106,793	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	Gift	239	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	GiftD (derivative)	106,793	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Oct 2, 2026	GiftD (derivative)	106,793	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 17, 2026	Exercise	162,247	3.90 USD	$632.8K	SEC
C3.ai, Inc.Listing on record	Sep 17, 2026	Sell	-282,001	10.90 USD	$3.1M	SEC
C3.ai, Inc.Listing on record	Sep 17, 2026	ExerciseD (derivative)	-162,247	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 17, 2026	ExerciseD (derivative)	-282,001	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 17, 2026	Exercise	282,001	3.90 USD	$1.1M	SEC
C3.ai, Inc.Listing on record	Sep 17, 2026	Sell	-162,247	10.54 USD	$1.7M	SEC
C3.ai, Inc.Listing on record	Sep 15, 2026	ExerciseD (derivative)	-44,766	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 15, 2026	Sell	-22,780	10.56 USD	$240.6K	SEC
C3.ai, Inc.Listing on record	Sep 15, 2026	Gift	-21,986	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 15, 2026	Exercise	44,766	—	n/a (No price was disclosed in the filing)	SEC
C3.ai, Inc.Listing on record	Sep 15, 2026	Gift	21,986	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 3, 2026	ExerciseD (derivative)	-32,736	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 3, 2026	Gift	-15,846	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Sep 3, 2026	Exercise	32,736	—	n/a (No price was disclosed in the filing)	SEC
C3.ai, Inc.Listing on record	Sep 3, 2026	Sell	-16,890	10.30 USD	$174K	SEC
C3.ai, Inc.Listing on record	Sep 3, 2026	Gift	15,846	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
C3.ai, Inc.Listing on record	Aug 13, 2026	Exercise	453,314	3.90 USD	$1.8M	SEC