SIEBEL THOMAS M

PrivateCIK: 1031530
Location

REDWOOD CITY, CA

SIEBEL THOMAS M (Chief Executive Officer) sold 38.1% of their position (444.25K shares) of C3.AI, INC. on the open market

Open‑market sale worth $4.78M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales
InsiderSIEBEL THOMAS MCIK 1031530
→
IssuerC3.AI, INC.CIK 1577526
DirectorOfficer10% Owner· Chief Executive Officer
Since Dec 2020
-444.25K
Net shares
Net seller
$4.78M
Total sold
2
Open market trades
0B · 2S
6
Total transactions
444.25K acquired · 888.50K disposed
Non-Derivative Transactions4

Class A Common Stock

Direct
M · Option Exercise

Shares

+282K

Price / share

$3.90

Trade value

$1.10M

% of position

39.0%
9/15/2026
722.36K→1M

Class A Common Stock

Direct
S · Sale

Shares

−282K

Price / share

$10.90

Trade value

$3.07M

% of position

28.1%
9/15/2026
1M→722.36K

Class A Common Stock

Direct
M · Option Exercise

Shares

+162.25K

Price / share

$3.90

Trade value

$632.76K

% of position

22.5%
9/16/2026
722.36K→884.61K

Class A Common Stock

Direct
S · Sale

Shares

−162.25K

Price / share

$10.54

Trade value

$1.71M

% of position

18.3%
9/16/2026
884.61K→722.36K
Total

Net shares

+0.00

Net value

-$3.05M

Derivative Transactions2

Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Class A Common Stock

282K shares

Shares

−282K

Strike price

3.90

Held after

2.13M

Exercisable

—

9/15/2026

Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Class A Common Stock

162.25K shares

Shares

−162.25K

Strike price

3.90

Held after

1.97M

Exercisable

—

9/16/2026
Non-Derivative Holdings (Post-Transaction)5

Class A Common Stock

Indirect
Shares owned1.24M

Class A Common Stock

Indirect
Shares owned9.22K

Class A Common Stock

Indirect
Shares owned7.11M

Class A Common Stock

Indirect
Shares owned170.29K

Class A Common Stock

Indirect
Shares owned72.69K
Total
8.59M indirect8.59M
Derivative Holdings (Post-Transaction)0
No derivative holdings reported
SIEBEL THOMAS M — Insider Transaction (Form 4) Filed Sep 17, 2026 | Finecho