SIEBEL THOMAS M (Chief Executive Officer) sold 39.0% of their position (462.56K shares) of C3.AI, INC. on the open market

Open‑market sale worth $4.24M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 3 sales

SIEBEL THOMAS M

Filed: 7/16/2026ACC: 0001577526-26-000085

InsiderSIEBEL THOMAS MCIK 1031530

→

IssuerC3.AI, INC.CIK 1577526

DirectorOfficer10% Owner· Chief Executive Officer

Since Dec 2020

-462.56K

Net shares

Net seller

$4.24M

Total sold

Open market trades

0B · 3S

Total transactions

462.56K acquired · 925.13K disposed

Non-Derivative Transactions6

Class A Common Stock

Direct

M · Option Exercise

+264.10K

Price / share

$2.04

Trade value

$538.76K

% of position

36.6%

7/14/2026

722.36K→986.46K

Class A Common Stock

Direct

S · Sale

−264.10K

Price / share

$9.07

Trade value

$2.40M

% of position

26.8%

7/14/2026

986.46K→722.36K

Class A Common Stock

Direct

M · Option Exercise

+64.97K

Price / share

$2.04

Trade value

$132.55K

% of position

9.0%

7/15/2026

722.36K→787.34K

Class A Common Stock

Direct

S · Sale

−64.97K

Price / share

$9.31

Trade value

$604.92K

% of position

8.3%

7/15/2026

787.34K→722.36K

Class A Common Stock

Direct

M · Option Exercise

+133.49K

Price / share

$3.90

Trade value

$520.61K

% of position

18.5%

7/15/2026

722.36K→855.85K

Class A Common Stock

Direct

S · Sale

−133.49K

Price / share

$9.32

Trade value

$1.24M

% of position

15.6%

7/15/2026

855.85K→722.36K

Total

Net shares

+0.00

Net value

-$3.05M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	7/14/2026	M · Option Exercise	+264.10K	$2.04	$538.76K	36.6%	722.36K	986.46K
Class A Common Stock Direct	7/14/2026	S · Sale	−264.10K	$9.07	$2.40M	26.8%	986.46K	722.36K
Class A Common Stock Direct	7/15/2026	M · Option Exercise	+64.97K	$2.04	$132.55K	9.0%	722.36K	787.34K
Class A Common Stock Direct	7/15/2026	S · Sale	−64.97K	$9.31	$604.92K	8.3%	787.34K	722.36K
Class A Common Stock Direct	7/15/2026	M · Option Exercise	+133.49K	$3.90	$520.61K	18.5%	722.36K	855.85K
Class A Common Stock Direct	7/15/2026	S · Sale	−133.49K	$9.32	$1.24M	15.6%	855.85K	722.36K
Total			+0.00		-$3.05M

Derivative Transactions3

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

264.10K shares

−264.10K

Strike price

2.04

Held after

64.97K

Exercisable

—

7/14/2026

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

64.97K shares

−64.97K

Strike price

2.04

Held after

0.00

Exercisable

—

7/15/2026

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Class A Common Stock

133.49K shares

−133.49K

Strike price

3.90

Held after

2.87M

Exercisable

—

7/15/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Right to Buy) Direct	Class A Common Stock264.10K shares	7/14/2026	M · Option Exercise	−264.10K	2.04	—	64.97K
Stock Option (Right to Buy) Direct	Class A Common Stock64.97K shares	7/15/2026	M · Option Exercise	−64.97K	2.04	—	0.00
Stock Option (Right to Buy) Direct	Class A Common Stock133.49K shares	7/15/2026	M · Option Exercise	−133.49K	3.90	—	2.87M

Non-Derivative Holdings (Post-Transaction)4

Class A Common Stock

Indirect

Shares owned9.22K

Class A Common Stock

Indirect

Shares owned72.69K

Class A Common Stock

Indirect

Shares owned170.29K

Class A Common Stock

Indirect

Shares owned1.24M

Total

1.49M indirect1.49M

Security Title	Shares Owned	Ownership Type
Class A Common Stock	9.22K	Indirect
Class A Common Stock	72.69K	Indirect
Class A Common Stock	170.29K	Indirect
Class A Common Stock	1.24M	Indirect
Total	1.49M	1.49M indirect

Derivative Holdings (Post-Transaction)0

No derivative holdings reported