Transaction · 0001628280-26-060988

Lie Sean

Lie Sean, CTO, reported a transaction classified as unknown at Cerebras Systems Inc. involving 46141.000000 shares for an estimated $0.00. Reported holdings after the transaction were 7582992.000000 shares. The stored filing text includes a detected 10b5-1 reference.

unknownSEC transaction code CCTO
CBRSCerebras Systems Inc.
Trade date
Sep 04, 2026
Filing date
Sep 09, 2026
View on SEC Insider profile
Estimated value$0Shares × reported price
Shares traded46.1k$0.00 per share
Holdings after7.58MDirect
% of reported position tradedUnavailableThis security and ownership context
How reported position traded is calculated

Not calculated for derivative securities.

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.

CBRS price since this filing

Daily closing prices, with the filing date and available return windows
CBRS · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago +9.2%1w ago -8.7%1d ago -2.9%
Returns since7d -2.9%30d -14.4%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Derivative
Type
unknown
Code C
Identifier
0001628280-26-060988
Class B Common Stock
Transaction date
Sep 04, 2026
Filed Sep 09, 2026, 12:19 AM · 5d delay
Shares
46,141 sh
$0.00 per share
Estimated value
$0
Computed from shares × price
Holdings after
7,582,992 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Derivative Transaction Direct Ownership 10b5-1 Detected
Filing-only score

-20 points

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.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • derivative_transaction-16 points

    is_derivative = true

    Derivative exercise rows are less discretionary than open-market purchases.
  • 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

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
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