Activity Companies Alerts About

Thomas Siebel owns 7.57% of C3.ai

12,170,310 shares as of the October 13, 2026 filing, worth $138M at the latest close.

AI · $1.8B market cap · Founder-led
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Free.
The stake
7.57%
worth $138M at the latest close
Stake rank
#365
by dollar value of the stake
Last sale
6 days ago
Oct 13, 2026
Last buy
None
no purchases since 2021

Thomas Siebel owns 7.57% of C3.ai, Inc.: 12,170,310 of 160,779,856 shares, worth about $138M at the 2026-10-16 close. The stake has moved from 13.86% in 2020 to 7.57% on 2026-10-13, across 40 sales and 0 purchases that moved it since 2016. The last trade that moved it was a planned sale of $5.1M on 2026-10-13.

How the stake is held

each class as its filings last stated it
SHARES
OF THE STAKE
CLASS A · stated Oct 13, 2026 · Form 4 ↗
9,170,318
75.3%
HELD DIRECTLY
722,362
5.9%
HELD INDIRECTLY · 5 VEHICLES
8,447,956
69.4%
Indirect, per the filing’s footnote
7,105,832
58.4%
Indirect holding
1,237,115
10.2%
Indirect holding
54,616
0.4%
Indirect holding
37,327
0.3%
Indirect holding
13,066
0.1%
CLASS B · stated Sep 30, 2026 · Form 4 ↗
2,999,992
24.7%
HELD INDIRECTLY · 6 VEHICLES
2,999,992
24.7%
Indirect holding
2,072,820
17.0%
Indirect holding
500,000
4.1%
Indirect holding
106,793
0.9%
Indirect holding
106,793
0.9%
Indirect holding
106,793
0.9%
Indirect holding
106,793
0.9%
THE STAKE
12,170,310
7.57%