Transaction · 0001031530-26-000002

SIEBEL THOMAS M

SIEBEL THOMAS M, CHAIR, reported an open-market or private sale at C3.ai, Inc. involving 309589.000000 shares for an estimated $4185643.28. Reported holdings after the transaction were 632256.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SCHAIR
AIC3.ai, Inc.
Filing timeJan 15
Trade dateJan 13, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$13.53
Pre-filing
1mo ago +12.9%1w ago +4.6%1d ago +4.6%
Returns since
7d -4.1%30d -20.3%90d -29.6%180d -32.4%1y -26.1%

AI price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
AI since 2026-01-15Filed 232 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001031530-26-000002
Class A Common Stock
Transaction date
Jan 13, 2026
Filed Jan 15, 2026, 12:00 AM · 2d delay
Shares
309k sh
$1.35k per share
Estimated value
-$418M
Computed from shares × price
Holdings after
632k sh
Indirect · See Footnote

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Cluster Selling Large Holdings Reduction Large Sale Repeat Seller 10b5-1 Detected
-6score
Filing-only score

-6

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Executive Chairman

Officer YesDirector Yes10% YesOther No
Footnotes & amended
  1. F1

    The transaction being reported was effected pursuant to a previously established Rule 10b5-1 trading plan dated September 20, 2024.

  2. F2

    The price reported is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $13.265 to $14.20, inclusive. The Reporting Person will provide upon request to t…

  3. F3

    The shares are held by First Virtual Holdings, LLC, of which the Reporting Person is Chairman.

  4. F4

    The shares are held by Siebel Asset Management, L.P., of which the Reporting Person is the general partner.

  5. F5

    The shares are held by Siebel Asset Management III, L.P., of which the Reporting Person is the general partner.

  6. F6

    The shares are held by The Siebel 2011 Irrevocable Children's Trust, of which the Reporting Person is co-trustee.

  7. F7

    Fully vested.

Original filing · 0001031530-26-000002
Related transactions

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Same reporting owner
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