Lie Sean's Form 4 filing
Cerebras Systems Inc. (CBRS) · filed Sep 28, 2026
- Accession no.
- 0001628280-26-063713
- Filed
- Sep 28, 2026, 4:05 PM ET
- Trade date
- Sep 25, 2026
- Filing delay
- 3 days
- Rule 10b5-1 plan
- Checked
This filing lists 11 non-derivative transactions and 4 derivative transactions. Open-market sales total $25.1M. It was filed 3 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Lie SeanCIK 0002132472 | Officer (Chief Technology Officer) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 25, 2026 | Class A Common Stock | CConversionAcquired | +120,000 | –F1 | – | 465,569 | Direct | |
| Sep 25, 2026 | Class A Common Stock | GGiftDisposed | −36,000 | $0.00 | $0 | 429,569 | Direct | |
| Sep 25, 2026 | Class A Common Stock | SSaleDisposed | −500 | $212.14F4 | −$106,070 | 429,069 | Direct | |
| Sep 25, 2026 | Class A Common Stock | SSaleDisposed | −9,177 | $211.32F5 | −$1,939,283.64 | 419,892 | Direct | |
| Sep 25, 2026 | Class A Common Stock | SSaleDisposed | −30,565 | $210.45F6 | −$6,432,404.25 | 389,327 | Direct | |
| Sep 25, 2026 | Class A Common Stock | SSaleDisposed | −29,991 | $209.53F7 | −$6,284,014.23 | 359,336 | Direct | |
| Sep 25, 2026 | Class A Common Stock | SSaleDisposed | −21,022 | $208.41F8 | −$4,381,195.02 | 338,314 | Direct | |
| Sep 25, 2026 | Class A Common Stock | SSaleDisposed | −6,869 | $207.54F9 | −$1,425,592.26 | 331,445 | Direct | |
| Sep 25, 2026 | Class A Common Stock | SSaleDisposed | −13,776 | $206.63F10 | −$2,846,534.88 | 317,669 | Direct | |
| Sep 25, 2026 | Class A Common Stock | SSaleDisposed | −5,900 | $205.30F11 | −$1,211,270 | 311,769 | Direct | |
| Sep 25, 2026 | Class A Common Stock | SSaleDisposed | −2,200 | $204.50F12 | −$449,900 | 309,569 | Direct |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 25, 2026 | Class B Common Stock | MOption exerciseDisposed | −116,875 | $0.00 | $0 | 172,146 | Direct | |
| Sep 25, 2026 | Class B Common Stock | MOption exerciseDisposed | −3,125 | $0.00 | $0 | 32,420 | Direct | |
| Sep 25, 2026 | Class A Common Stock | MOption exerciseAcquired | +120,000 | $0.00F1 | $0 | 7,702,992 | Direct | |
| Sep 25, 2026 | Class A Common Stock | CConversionDisposed | −120,000 | $0.00 | $0 | 7,582,992 | Direct |
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
- 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.
Referenced by the price of 1 transaction in Table I and 1 transaction in Table II.
- 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 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.
Referenced by the price of 1 transaction in Table I.
- 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 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.
Referenced by the price of 1 transaction in Table I.
- 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 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.
Referenced by the price of 1 transaction in Table I.
- 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 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.
Referenced by the price of 1 transaction in Table I.
- 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 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.
Referenced by the price of 1 transaction in Table I.
- 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 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.
Referenced by the price of 1 transaction in Table I.
- 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 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.
Referenced by the price of 1 transaction in Table I.
- 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 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.
Referenced by the price of 1 transaction in Table I.
- 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 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.
Referenced by the price of 1 transaction in Table I.