Transaction · 0001628280-26-060988

Lie Sean

Lie Sean, CTO, reported a transaction classified as exercise at Cerebras Systems Inc. involving 46141.000000 shares for an estimated $0.00. Reported holdings after the transaction were 289021.000000 shares. The stored filing text includes a detected 10b5-1 reference.

exerciseSEC transaction code MCTO
CBRSCerebras Systems Inc.
Filing timeSep 09
Trade dateSep 04, 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
$199.77
Pre-filing
1mo ago +7.3%1w ago -10.4%1d ago -4.7%
Returns since
7d +0.0%30d +0.0%90d +0.0%180d +0.0%1y +0.0%

CBRS price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
CBRS since 2026-09-09Filed today · 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

Derivative
Type
exercise
Code M
Identifier
0001628280-26-060988
Stock Option
Transaction date
Sep 04, 2026
Filed Sep 09, 2026, 12:19 AM · 5d delay
Shares
46.1k sh
$0 per share
Estimated value
$0
Computed from shares × price
Holdings after
289k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Derivative Transaction Direct Ownership 10b5-1 Detected
-20score
Filing-only score

-20

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

Low filing signal

This filing has a meaningfully negative filing-only score. It is likely less useful as a positive insider-activity signal.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Technology Officer

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. 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.

  2. 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.

  3. 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.

  4. 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…

  5. F5

    The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2024.

Original filing · 0001628280-26-060988
Related transactions

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Same reporting owner
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