Transaction · 0001628280-26-063713

Lie Sean

Lie Sean, CTO, reported an open-market or private sale at Cerebras Systems Inc. involving 13776.000000 shares for an estimated $2846534.88. Reported holdings after the transaction were 317669.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SCTO
CBRSCerebras Systems Inc.
Filing timeSep 28
Trade dateSep 25, 2026
Filing · SECView on SEC
InsiderProfile
% of reported position traded4.16%Shares sold ÷ (holdings after + shares sold). Estimated position before: 331,445 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.

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$196.74
Pre-filing
1mo ago -7.4%1w ago +0.8%1d ago +4.9%
Returns since
7d30d90d180d1y

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 2026-09-28Filed 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

Non-derivative
Type
Sell
Code S
Identifier
0001628280-26-063713
Class A Common Stock
Transaction date
Sep 25, 2026
Filed Sep 28, 2026, 08:05 PM · 3d delay
Shares
13.7k sh
$206.63 per share
Estimated value
-$2.84M
Computed from shares × price
Holdings after
317k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Direct Ownership Large Sale Repeat Seller 10b5-1 Detected
-4score
Filing-only score

-4

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.

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 36,000 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 $211.97 to $212.31, inclusive. Upon request by the staff of the Securities and…

  5. F5

    The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $210.97 to $211.95, inclusive. Upon request by the staff of the Securities and…

  6. F6

    The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $209.97 to $210.96, inclusive. Upon request by the staff of the Securities and…

  7. F7

    The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $208.97 to $209.96, inclusive. Upon request by the staff of the Securities and…

  8. F8

    The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $207.97 to $208.95, inclusive. Upon request by the staff of the Securities and…

  9. F9

    The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $206.96 to $207.95, inclusive. Upon request by the staff of the Securities and…

  10. F10

    The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $205.96 to $206.95, inclusive. Upon request by the staff of the Securities and…

  11. F11

    The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $204.86 to $205.83, inclusive. Upon request by the staff of the Securities and…

  12. F12

    The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $203.86 to $204.83, inclusive. Upon request by the staff of the Securities and…

  13. F13

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

  14. F14

    The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2023.

Original filing · 0001628280-26-063713
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Same reporting owner
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