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FilingsForm 4

C3.ai's Thomas Siebel sold 444,248 shares for $4.78 million on Sep 15 and Sep 16, 2026

From the public record1 min read

Published Updated Filed
Value$4.78 million
Shares444,248
Average price$10.77
FiledSep 17

Written by Claude Sonnet 5.5, an AI model, from public records. Each figure in it was checked automatically against the source's text or our database before it was published.

Thomas Siebel, a director, an officer (CEO and Chairman of the Board) and an owner of more than 10% of the shares of C3.ai, sold 444,248 shares for $4.78 million on Sep 15 and Sep 16, 2026, at an average of $10.77 a share. A Form 4, the form an insider files when trading the company's shares, lists exercises of stock options on the same days for the same numbers of shares and states 722,362 shares held directly after the last sale line. A footnote says the transactions on the form were made under a previously established Rule 10b5-1 trading plan dated September 20, 2024. The Form 4 was filed Sep 17, 2026 and is on the SEC's EDGAR site.1234567891011121314151617

How each figure was checked17 facts
  1. C3.ai Form 4 0001577526-26-000130: ownerSIEBEL THOMAS MOur database
  2. C3.ai Form 4 0001577526-26-000130: relationshipdirector, officer (CEO and Chairman of the Board) and owner of more than 10% of the sharesOur database
  3. C3.ai Form 4 0001577526-26-000130: shares444,248Our database
  4. C3.ai Form 4 0001577526-26-000130: value$4.78 millionOur database
  5. C3.ai Form 4 0001577526-26-000130: first dateSep 15, 2026Our database
  6. C3.ai Form 4 0001577526-26-000130: last dateSep 16, 2026Our database
  7. C3.ai Form 4 0001577526-26-000130: average price$10.77Our database
  8. C3.ai Form 4 0001577526-26-000130: sidesaleOur database
  9. C3.ai Form 4 0001577526-26-000130, line 1exercise of a derivative security (code M): 282,001 shares acquired on Sep 15, 2026 at $3.90 per share; held directly; 1,004,363 owned after the lineOur database
  10. C3.ai Form 4 0001577526-26-000130, line 2sale (code S): 282,001 shares disposed on Sep 15, 2026 at $10.90 per share; held directly; 722,362 owned after the lineOur database
  11. C3.ai Form 4 0001577526-26-000130, line 3exercise of a derivative security (code M): 162,247 shares acquired on Sep 16, 2026 at $3.90 per share; held directly; 884,609 owned after the lineOur database
  12. C3.ai Form 4 0001577526-26-000130, line 4sale (code S): 162,247 shares disposed on Sep 16, 2026 at $10.54 per share; held directly; 722,362 owned after the lineOur database
  13. C3.ai Form 4 0001577526-26-000130: shares afterafter the last sale line the form states 722362 shares of Class A Common Stock held directlyOur database
  14. C3.ai Form 4 0001577526-26-000130, derivative line 1: the shares owned after the line2,131,195 shares of Stock Option (Right to Buy) owned after this line, held directlyOur database
  15. C3.ai Form 4 0001577526-26-000130, derivative line 2: the shares owned after the line1,968,948 shares of Stock Option (Right to Buy) owned after this line, held directlyOur database
  16. Footnote F1 of the Form 4 filed Sep 17, 2026 (it is attached to that document's line N1, N2, N3, N4, D1, D2)September 20, 2024Footnotes of the Form 4 (SEC EDGAR) ↗
  17. C3.ai Form 4 0001577526-26-000130: filed onSep 17, 2026Our database

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The record

Issuer
C3.ai (CIK 1577526, filed as C3.ai, Inc.)
Form
4
Accession
0001577526-26-000130
Filed
Sep 17, 2026
Period of report
Sep 15, 2026
Reporting owner
Thomas Siebel (CIK 1031530, filed as SIEBEL THOMAS M)
Relationship
director, officer (CEO and Chairman of the Board) and owner of more than 10% of the shares
Rule 10b5-1 checkbox
Ticked
Line 1
M (exercise of a derivative security) · 282,001 Class A Common Stock at $3.90 · Sep 15, 2026 · acquired, directly · 1,004,363 held after · footnote F1
Line 2
S (sale) · 282,001 Class A Common Stock at $10.90 · Sep 15, 2026 · disposed, directly · 722,362 held after · footnotes F1 and F2
Line 3
M (exercise of a derivative security) · 162,247 Class A Common Stock at $3.90 · Sep 16, 2026 · acquired, directly · 884,609 held after · footnote F1
Line 4
S (sale) · 162,247 Class A Common Stock at $10.54 · Sep 16, 2026 · disposed, directly · 722,362 held after · footnotes F1 and F3
Derivative line 1
M (exercise of a derivative security) · 282,001 Stock Option (Right to Buy) at $0.00 · Sep 15, 2026 · disposed, directly · 2,131,195 held after · footnotes F1 and F9
Derivative line 2
M (exercise of a derivative security) · 162,247 Stock Option (Right to Buy) at $0.00 · Sep 16, 2026 · disposed, directly · 1,968,948 held after · footnotes F1 and F9
Footnote F1
The transaction being reported was effected pursuant to a previously established Rule 10b5-1 trading plan dated September 20, 2024.
Footnote F2
The price reported is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $10.76 to $11.04, inclusive. The Reporting Person will provide upon request to the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer, full information regarding the number of shares sold at each separate price.
Footnote F3
The price reported is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $10.35 to $10.68, inclusive. The Reporting Person will provide upon request to the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer, full information regarding the number of shares sold at each separate price.
Footnote F4
The shares are held by The Siebel Living Trust u/a/d 7/27/93, as amended, of which the Reporting Person is trustee.
Footnote F5
The shares are held by First Virtual Holdings, LLC, of which the Reporting Person is Chairman.
Footnote F6
The shares are held by Siebel Asset Management, L.P., of which the Reporting Person is the general partner.
Footnote F7
The shares are held by Siebel Asset Management III, L.P., of which the Reporting Person is the general partner.
Footnote F8
The shares are held by The Siebel 2011 Irrevocable Children's Trust, of which the Reporting Person is co-trustee.
Footnote F9
Fully vested.
Open the source ↗

Insider purchases and sales of C3.ai shares, 12 months

Total$89.21 million sold, $302,300 bought
Thomas Siebel · sold$44.78 million
Thomas M. Siebel · sold, held indirectly$30.55 million
Schilling Robert David · sold$8.13 million
Stephen Bradley Ehikian · sold$4.09 million
Hitesh Lath · sold$1.58 million
Jim H. Snabe · bought$302,300
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About C3.ai

C3.ai page →
Revenue$250.27 millionYear to Apr 30, 2026 · −35.67% year over year
Operating income−$498.5 millionYear to Apr 30, 2026 · −53.66% year over year
Net income−$470.37 millionYear to Apr 30, 2026 · −62.93% year over year

Source: SEC EDGAR XBRL financial data · filed Sep 9, 2026

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Layoffs, 12 months
No WARN notices in the US states we read

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Sources

  1. SEC EDGAR, Form 4 filed Sep 17, 2026
  2. How we collect our data
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