SIEBEL THOMAS M (Chief Executive Officer) sold 2.3% of their position (17.66K shares) of C3.AI, INC. on the open market

Open‑market sale worth $137.5K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

SIEBEL THOMAS M

Filed: 3/3/2026ACC: 0001577526-26-000015

InsiderSIEBEL THOMAS MCIK 1031530

→

IssuerC3.AI, INC.CIK 1577526

DirectorOfficer10% Owner· Chief Executive Officer

Since Dec 2020

-17.66K

Net shares

Net seller

$137.5K

Total sold

Open market trades

0B · 1S

Total transactions

47.82K acquired · 65.47K disposed

Non-Derivative Transactions4

Class A Common Stock

Direct

M · Option Exercise

+32.74K

Price / share

—

Trade value

—

% of position

4.5%

3/1/2026

722.36K→755.10K

Class A Common Stock

Direct

S · Sale

−17.66K

Price / share

$7.79

Trade value

$137.53K

% of position

2.3%

3/2/2026

755.10K→737.44K

Class A Common Stock

Direct

G · Gift

−15.08K

Price / share

—

Trade value

—

% of position

2.0%

3/3/2026

737.44K→722.36K

Class A Common Stock

Indirect

G · Gift

+15.08K

Price / share

—

Trade value

—

% of position

2.3%

3/3/2026

657.78K→672.86K

Total

Net shares

+15.08K

Net value

-$137.53K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	3/1/2026	M · Option Exercise	+32.74K	—	—	4.5%	722.36K	755.10K
Class A Common Stock Direct	3/2/2026	S · Sale	−17.66K	$7.79	$137.53K	2.3%	755.10K	737.44K
Class A Common Stock Direct	3/3/2026	G · Gift	−15.08K	—	—	2.0%	737.44K	722.36K
Class A Common Stock Indirect	3/3/2026	G · Gift	+15.08K	—	—	2.3%	657.78K	672.86K
Total			+15.08K		-$137.53K

Derivative Transactions1

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class A Common Stock

32.74K shares

−32.74K

Strike price

Held after

98.21K

Exercisable

—

3/1/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Restricted Stock Units Direct	Class A Common Stock32.74K shares	3/1/2026	M · Option Exercise	−32.74K		—	98.21K

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 owned1.24M

Class A Common Stock

Indirect

Shares owned170.29K

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	1.24M	Indirect
Class A Common Stock	170.29K	Indirect
Total	1.49M	1.49M indirect

Derivative Holdings (Post-Transaction)0

No derivative holdings reported