Lie Sean's Form 4 filing
Cerebras Systems Inc.CBRS · filed Aug 20, 2026
- Accession no.
- 0001628280-26-058312
- Filed
- Aug 20, 2026, 8:04 PM ET
- Trade date
- Aug 18, 2026
- Filing delay
- 2 days
- Rule 10b5-1 plan
- Not checked
This filing lists 27 non-derivative transactions and 1 derivative transaction. Open-market sales total $4.72M. It was filed 2 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 |
|---|---|---|---|---|---|---|---|---|
| Aug 18, 2026 | Class A Common Stock | CConversionAcquired | +616,706 | –F1 | – | 616,706 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −1 | $214.85 | −$214.85 | 616,705 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −1,059 | $215.67F3 | −$228,394.53 | 615,646 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −1,807 | $216.40F4 | −$391,034.8 | 613,839 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −1,344 | $217.58F5 | −$292,427.52 | 612,495 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −1,670 | $218.54F6 | −$364,961.8 | 610,825 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −1,894 | $219.58F7 | −$415,884.52 | 608,931 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −3,723 | $220.43F8 | −$820,660.89 | 605,208 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −3,409 | $221.47F9 | −$754,991.23 | 601,799 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −1,599 | $222.42F10 | −$355,649.58 | 600,200 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −492 | $223.54F11 | −$109,981.68 | 599,708 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −202 | $224.52F12 | −$45,353.04 | 599,506 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −335 | $225.51F13 | −$75,545.85 | 599,171 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −457 | $226.46F14 | −$103,492.22 | 598,714 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −347 | $227.37F15 | −$78,897.39 | 598,367 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −95 | $228.53F16 | −$21,710.35 | 598,272 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −147 | $229.46F17 | −$33,730.62 | 598,125 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −47 | $230.67F18 | −$10,841.49 | 598,078 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −243 | $231.57F19 | −$56,271.51 | 597,835 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −277 | $232.62F20 | −$64,435.74 | 597,558 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −224 | $233.31F21 | −$52,261.44 | 597,334 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −590 | $234.47F22 | −$138,337.3 | 596,744 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −301 | $235.50F23 | −$70,885.5 | 596,443 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −203 | $236.43F24 | −$47,995.29 | 596,240 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −11 | $237.23 | −$2,609.53 | 596,229 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −9 | $238.78 | −$2,149.02 | 596,220 | Direct | |
| Aug 18, 2026 | Class A Common Stock | SSaleDisposed | −771 | $240.01F25 | −$185,047.71 | 595,449 | 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 |
|---|---|---|---|---|---|---|---|---|
| Aug 18, 2026 | Class A Common Stock | CConversionDisposed | −616,706 | –F1 | – | 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.
- F3
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $215.01 to $215.99, 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.
- F4
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $216.00 to $216.99, 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 $217.00 to $217.99, 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 $218.00 to $218.99, 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 $219.00 to $219.99, 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 $220.00 to $220.99, 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 $221.00 to $221.99, 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 $222.00 to $222.99, 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 $223.00 to $223.99, 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 $224.12 to $224.92, 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.
- F13
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $225.01 to $225.98, 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.
- F14
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $226.01 to $226.97, 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.
- F15
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $227.01 to $227.96, 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.
- F16
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $228.01 to $228.99, 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.
- F17
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $229.00 to $229.88, 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.
- F18
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $230.11 to $230.99, 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.
- F19
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $231.12 to $231.99, 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.
- F20
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $232.05 to $232.99, 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.
- F21
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $233.00 to $233.92, 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.
- F22
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $234.04 to $234.99, 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.
- F23
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $235.00 to $235.99, 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.
- F24
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $236.01 to $236.97, 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.
- F25
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $240.00 to $240.01, 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.