Postgame
FilingsForm 4

Cerebras Systems' Sean Lie sold 53,460 shares for $11.24 million on Sep 4, 2026

From the public record1 min read

Published Updated Filed
Value$11.24 million
Shares53,460
Average price$210.16
FiledSep 8

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.

Sean Lie, an officer (Chief Technology Officer) of Cerebras Systems, sold 53,460 shares for $11.24 million on Sep 4, 2026, at an average of $210.16 a share. A Form 4, the form an insider files when trading the company's shares, also lists an exercise of stock options and a conversion of Class B shares into Class A shares on the same day, and states 345,569 Class A shares held directly after the sale line. The form lists a gift of 16,038 shares on Sep 4, which a footnote says went to a donor-advised fund. A footnote on the Form 4, filed Sep 8, 2026 and available on the SEC's EDGAR site, says the sale was made under a Rule 10b5-1 trading plan adopted May 20, 2026.12345678910111213141516171819

How each figure was checked19 facts
  1. Cerebras Systems Form 4 0001628280-26-060988: ownerLie SeanOur database
  2. Cerebras Systems Form 4 0001628280-26-060988: relationshipofficer (Chief Technology Officer)Our database
  3. Cerebras Systems Form 4 0001628280-26-060988: shares53,460Our database
  4. Cerebras Systems Form 4 0001628280-26-060988: value$11.24 millionOur database
  5. Cerebras Systems Form 4 0001628280-26-060988: first dateSep 4, 2026Our database
  6. Cerebras Systems Form 4 0001628280-26-060988: average price$210.16Our database
  7. Cerebras Systems Form 4 0001628280-26-060988: sidesaleOur database
  8. Cerebras Systems Form 4 0001628280-26-060988, derivative line 1derivative line, exercise of a derivative security (code M): 46,141 shares disposed on Sep 4, 2026 at $0 per share; held directly; 289,021 owned after the lineOur database
  9. Cerebras Systems Form 4 0001628280-26-060988, derivative line 2derivative line, exercise of a derivative security (code M): 46,141 shares acquired on Sep 4, 2026 at $0 per share; held directly; 7,629,133 owned after the lineOur database
  10. Cerebras Systems Form 4 0001628280-26-060988, derivative line 3derivative line, conversion of a derivative security (code C): 46,141 shares disposed on Sep 4, 2026 at $0 per share; held directly; 7,582,992 owned after the lineOur database
  11. Cerebras Systems Form 4 0001628280-26-060988, line 1conversion of a derivative security (code C): 46141 shares acquired on 2026-09-04, no price stated; held directly; 415067 owned after the lineOur database
  12. Footnote F1 of the Form 4 filed Sep 8, 2026 (it is attached to that document's line N1, D2, D3)convertible into an equal number of Class A Common StockFootnotes of the Form 4 (SEC EDGAR) ↗
  13. Cerebras Systems Form 4 0001628280-26-060988: shares afterafter the last sale line the form states 345569 shares of Class A Common Stock held directlyOur database
  14. Cerebras Systems Form 4 0001628280-26-060988, derivative line 1: the shares owned after the line289,021 shares of Stock Option owned after this line, held directlyOur database
  15. Cerebras Systems Form 4 0001628280-26-060988, derivative line 3: the shares owned after the line7,582,992 shares of Class B Common Stock owned after this line, held directlyOur database
  16. Cerebras Systems Form 4 0001628280-26-060988, line 2gift (code G): 16,038 shares disposed on Sep 4, 2026 at $0 per share; held directly; 399,029 owned after the lineOur database
  17. Footnote F2 of the Form 4 filed Sep 8, 2026 (it is attached to that document's line N2)16,038; (3)Footnotes of the Form 4 (SEC EDGAR) ↗
  18. Cerebras Systems Form 4 0001628280-26-060988: filed onSep 8, 2026Our database
  19. Footnote F3 of the Form 4 filed Sep 8, 2026 (it is attached to that document's line N3)May 20, 2026Footnotes of the Form 4 (SEC EDGAR) ↗

Sign in to keep your place.

The record

Issuer
Cerebras Systems (CIK 2021728, filed as Cerebras Systems Inc.)
Form
4
Accession
0001628280-26-060988
Filed
Sep 8, 2026
Period of report
Sep 4, 2026
Reporting owner
Sean Lie (CIK 2132472, filed as Lie Sean)
Relationship
officer (Chief Technology Officer)
Rule 10b5-1 checkbox
Not ticked
Line 1
C (conversion of a derivative security) · 46,141 Class A Common Stock · Sep 4, 2026 · acquired, directly · 415,067 held after · footnote F1
Line 2
G (gift) · 16,038 Class A Common Stock at $0.00 · Sep 4, 2026 · disposed, directly · 399,029 held after · footnote F2
Line 3
S (sale) · 53,460 Class A Common Stock at $210.16 · Sep 4, 2026 · disposed, directly · 345,569 held after · footnotes F3 and F4
Derivative line 1
M (exercise of a derivative security) · 46,141 Stock Option at $0.00 · Sep 4, 2026 · disposed, directly · 289,021 held after · footnote F5
Derivative line 2
M (exercise of a derivative security) · 46,141 Class B Common Stock at $0.00 · Sep 4, 2026 · acquired, directly · 7,629,133 held after · footnote F1
Derivative line 3
C (conversion of a derivative security) · 46,141 Class B Common Stock at $0.00 · Sep 4, 2026 · disposed, directly · 7,582,992 held after · footnote F1
Footnote F1
The Class B Common Stock is convertible into an equal number of Class A Common Stock at any time, at the Reporting Person's election, and has no expiration date.
Footnote F2
The reporting person transferred 16,038 shares of the Issuer's common stock to a donor-advised fund sponsored by a charitable organization under Section 501(c)(3) of the Internal Revenue Code.
Footnote F3
The sale reported on this Form 4 represents shares sold by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 20, 2026.
Footnote F4
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $210.00 to $210.45, inclusive. Upon request by the staff of the Securities and Exchange commission, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.
Footnote F5
The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2024.
Open the source ↗

Insider purchases and sales of Cerebras Systems shares, since May 15, 2026

Total$295.59 million sold
Sean Lie · sold$168.72 million
Andrew Feldman · sold$64.25 million
Mallick Dhiraj · sold$22.76 million
Vassallo Steven · sold, held indirectly$21.42 million
Eric Vishria · sold, held indirectly$15.69 million
Patel Yagnesh · sold$2.76 million
New to this? Learn it in 4 minReading a Form 4

About Cerebras Systems

Cerebras Systems page →

Source: SEC EDGAR XBRL financial data · filed Aug 12, 2026

Open roles
116 open roles · 3 posted this week · 1 job board
Layoffs, 12 months
No WARN notices in the US states we read

Sources

  1. SEC EDGAR, Form 4 filed Sep 8, 2026
  2. How we collect our data
Cerebras Systems

Keep reading