Transaction · 0001628280-26-067978
CBRSCerebras Systems Inc.
Lie Sean
Lie Sean, CTO, reported a transaction classified as unknown at Cerebras Systems Inc. involving 32023.000000 shares. Reported holdings after the transaction were 341592.000000 shares. The stored filing text includes a detected 10b5-1 reference.
unknownSEC transaction code CCTO
- Trade date
- Oct 27, 2026
- Filing date
- Oct 28, 2026
How reported position traded is calculated
Calculated only for code-P purchases and code-S sales.
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.
Filing warnings
Notes recorded with this filingmissing priceThe filing did not provide a usable price per share.
CBRS price since this filing
Daily closing prices, with the filing date and available return windowsCBRS · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago +83.7%1w ago +5.0%1d ago -3.7%
Returns since7d30d90d180d1y
Transaction facts
Stored Form 4 columns with their raw values
- Type
- unknown Code C
- Identifier
- 0001628280-26-067978 Class A Common Stock
- Transaction date
- Oct 27, 2026 Filed Oct 28, 2026, 10:30 PM · 1d delay
- Shares
- 32,023 sh Price unknown
- Estimated value
- — Computed from shares × price
- Holdings after
- 341,592 sh Direct
Filing signal explanations
Badges describe filing facts only — not predictions.
Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Direct Ownership 10b5-1 Detected
Filing-only score
-8 points
Compact filing score computed from stored Form 4 facts. Version v1.
Mixed or weak signal
This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.
How this score is calculated
- direct_ownership+6 points
direct_or_indirect_ownership = D
Direct ownership reports the insider's personal stake. - timely_filing+4 points
reporting_delay_days = 1
Filing reported within two business days of the transaction. - tenb5_1_detected-10 points
is_10b5_1 = true
Stored filing content includes detected 10b5-1 language. - missing_price-8 points
price_cents is null
Missing price reduces confidence in value-based signals.
Missing facts
Read the scoring methodology- price_cents
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
- 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.
- F2
The reporting person transferred 18,000 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.
- 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.
- F4
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $116.58 to $116.88, inclusive. Upon request by the staff of the Securities and…
- F5
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $115.46 to $116.19, inclusive. Upon request by the staff of the Securities and…
- F6
The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2024.
- F7
The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2023.
Related transactions
Same SEC filing0 other transactions
Recent company activity
CBRS0 recent txs