SIEBEL THOMAS M (Chief Executive Officer) sold 3.6% of their position (27.61K shares) of C3.AI, INC. on the open market

Open‑market sale worth $298.4K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

SIEBEL THOMAS M

Filed: 2/3/2026ACC: 0001031530-26-000003

InsiderSIEBEL THOMAS MCIK 1031530

→

IssuerC3.AI, INC.CIK 1577526

DirectorOfficer10% Owner· Chief Executive Officer

Since Dec 2020

-27.61K

Net shares

Net seller

$298.4K

Total sold

Open market trades

0B · 1S

Total transactions

78.64K acquired · 106.25K disposed

Non-Derivative Transactions4

Class A Common Stock

Direct

M · Option Exercise

+53.13K

Price / share

—

Trade value

—

% of position

7.4%

2/1/2026

722.36K→775.49K

Class A Common Stock

Direct

S · Sale

−27.61K

Price / share

$10.81

Trade value

$298.41K

% of position

3.6%

2/2/2026

775.49K→747.88K

Class A Common Stock

Direct

G · Gift

−25.52K

Price / share

—

Trade value

—

% of position

3.4%

2/3/2026

747.88K→722.36K

Class A Common Stock

Indirect

G · Gift

+25.52K

Price / share

—

Trade value

—

% of position

4.0%

2/3/2026

632.26K→657.78K

Total

Net shares

+25.52K

Net value

-$298.41K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	2/1/2026	M · Option Exercise	+53.13K	—	—	7.4%	722.36K	775.49K
Class A Common Stock Direct	2/2/2026	S · Sale	−27.61K	$10.81	$298.41K	3.6%	775.49K	747.88K
Class A Common Stock Direct	2/3/2026	G · Gift	−25.52K	—	—	3.4%	747.88K	722.36K
Class A Common Stock Indirect	2/3/2026	G · Gift	+25.52K	—	—	4.0%	632.26K	657.78K
Total			+25.52K		-$298.41K

Derivative Transactions1

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

53.13K shares

−53.13K

Strike price

Held after

53.13K

Exercisable

—

2/1/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Restricted Stock Units Direct	Class A Common Stock53.13K shares	2/1/2026	M · Option Exercise	−53.13K		—	53.13K

Non-Derivative Holdings (Post-Transaction)4

Class A Common Stock

Indirect

Shares owned72.69K

Class A Common Stock

Indirect

Shares owned1.24M

Class A Common Stock

Indirect

Shares owned170.29K

Class A Common Stock

Indirect

Shares owned9.22K

Total

1.49M indirect1.49M

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

Derivative Holdings (Post-Transaction)0

No derivative holdings reported