SIEBEL THOMAS M (Chief Executive Officer) reported 4 transactions at C3.AI, INC.

Review the transaction codes below to understand the nature of each event.

SIEBEL THOMAS M

Filed: 10/2/2026ACC: 0001031530-26-000011

InsiderSIEBEL THOMAS MCIK 1031530

→

IssuerC3.AI, INC.CIK 1577526

DirectorOfficer10% Owner· Chief Executive Officer

Since Dec 2020

+428.13K

Net shares

Net buyer

$0.00

Total acquired

Open market trades

0B · 0S

Total transactions

428.13K acquired

Non-Derivative Transactions4

Class A Common Stock

Indirect

G · Gift

+239.00

Price / share

—

Trade value

—

% of position

0.5%

9/30/2026

45.58K→45.82K

Class A Common Stock

Indirect

G · Gift

+239.00

Price / share

—

Trade value

—

% of position

0.4%

9/30/2026

59.09K→59.33K

Class A Common Stock

Indirect

G · Gift

+239.00

Price / share

—

Trade value

—

% of position

0.6%

9/30/2026

39.40K→39.64K

Class A Common Stock

Indirect

G · Gift

+239.00

Price / share

—

Trade value

—

% of position

10.3%

9/30/2026

2.31K→2.55K

Total

Net shares

+956.00

Net value

$0.00

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Indirect	9/30/2026	G · Gift	+239.00	—	—	0.5%	45.58K	45.82K
Class A Common Stock Indirect	9/30/2026	G · Gift	+239.00	—	—	0.4%	59.09K	59.33K
Class A Common Stock Indirect	9/30/2026	G · Gift	+239.00	—	—	0.6%	39.40K	39.64K
Class A Common Stock Indirect	9/30/2026	G · Gift	+239.00	—	—	10.3%	2.31K	2.55K
Total			+956.00		$0.00

Derivative Transactions4

Class B Common Stock

Indirect

G · Gift

Converts to

Class A Common Stock

106.79K shares

+106.79K

Strike price

Held after

106.79K

Exercisable

—

9/30/2026

Class B Common Stock

Indirect

G · Gift

Converts to

Class A Common Stock

106.79K shares

+106.79K

Strike price

Held after

106.79K

Exercisable

—

9/30/2026

Class B Common Stock

Indirect

G · Gift

Converts to

Class A Common Stock

106.79K shares

+106.79K

Strike price

Held after

106.79K

Exercisable

—

9/30/2026

Class B Common Stock

Indirect

G · Gift

Converts to

Class A Common Stock

106.79K shares

+106.79K

Strike price

Held after

106.79K

Exercisable

—

9/30/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Class B Common Stock Indirect	Class A Common Stock106.79K shares	9/30/2026	G · Gift	+106.79K	—	106.79K
Class B Common Stock Indirect	Class A Common Stock106.79K shares	9/30/2026	G · Gift	+106.79K	—	106.79K
Class B Common Stock Indirect	Class A Common Stock106.79K shares	9/30/2026	G · Gift	+106.79K	—	106.79K
Class B Common Stock Indirect	Class A Common Stock106.79K shares	9/30/2026	G · Gift	+106.79K	—	106.79K

Non-Derivative Holdings (Post-Transaction)6

Class A Common Stock

Indirect

Shares owned1.24M

Class A Common Stock

Indirect

Shares owned37.33K

Class A Common Stock

Indirect

Shares owned13.07K

Class A Common Stock

Indirect

Shares owned7.11M

Class A Common Stock

Direct

Shares owned722.36K

Class A Common Stock

Indirect

Shares owned54.62K

Total

722.36K direct·8.45M indirect9.17M

Security Title	Shares Owned	Ownership Type
Class A Common Stock	1.24M	Indirect
Class A Common Stock	37.33K	Indirect
Class A Common Stock	13.07K	Indirect
Class A Common Stock	7.11M	Indirect
Class A Common Stock	722.36K	Direct
Class A Common Stock	54.62K	Indirect
Total	9.17M	722.36K direct·8.45M indirect

Derivative Holdings (Post-Transaction)2

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

2.07M

Shares owned

2.07M

Exercise price

Expiration

—

Exercise window

—

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

500K

Shares owned

500K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

2.57M

Owned

2.57M

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
Class B Common Stock Indirect	Class A Common Stock	—	—	2.07M	2.07M
Class B Common Stock Indirect	Class A Common Stock	—	—	500K	500K
Total				2.57M	2.57M