Transaction · 0001577526-26-000138

Siebel Thomas M

SIEBEL THOMAS M, CHAIR, reported an open-market or private sale at C3.ai, Inc. involving 435363.000000 shares for an estimated $5145076.40. Reported holdings after the transaction were 722362.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SCHAIR
AIC3.ai, Inc.
Trade date
Oct 13, 2026
Filing date
Oct 14, 2026
View on SEC Insider profile
Estimated value-$5.14MShares × reported price
Shares traded435k$11.82 per share
Holdings after722kDirect
% of reported position traded37.61%This security and ownership context
How reported position traded is calculated

Shares sold ÷ (holdings after + shares sold). Estimated position before: 1,157,725 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

AI price since this filing

Daily closing prices, with the filing date and available return windows
AI · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago -9.7%1w ago -3.7%1d ago -0.5%
Returns since7d30d90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001577526-26-000138
Class A Common Stock
Transaction date
Oct 13, 2026
Filed Oct 14, 2026, 09:44 PM · 1d delay
Shares
435,363 sh
$11.82 per share
Estimated value
-$5.14M
Computed from shares × price
Holdings after
722,362 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Cluster Selling Direct Ownership Large Holdings Reduction Large Sale Repeat Seller 10b5-1 Detected
Filing-only score

0 points

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

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • timely_filing+4 points

    reporting_delay_days = 1

    Filing reported within two business days of the transaction.
  • tenb5_1_detected-10 points

    is_10b5_1 = true

    Stored filing content includes detected 10b5-1 language.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

CEO and Chairman of the Board

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 $11.565 to $12.0123, inclusive. The Reporting Person will provide upon request to…

  3. F3

    The shares are held by The Siebel Living Trust u/a/d 7/27/93, as amended, of which the Reporting Person is trustee.

  4. F4

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

  5. F5

    The shares are held by HS ET DE Investments LLC, of which the Reporting Person is the manager.

  6. F6

    The shares are held by Siebel Legacy Investments I LLC, of which the Reporting Person is the manager.

  7. F7

    The shares are held by Siebel Legacy Investments II LLC, of which the Reporting Person is the manager.

  8. F8

    Fully vested.

Original filing · 0001577526-26-000138
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