Mallick Dhiraj's Form 4 filing
Cerebras Systems Inc.CBRS · filed Sep 30, 2026
- Accession no.
- 0001628280-26-064042
- Filed
- Sep 30, 2026, 6:34 PM ET
- Trade date
- Sep 29, 2026
- Filing delay
- 1 day
- Rule 10b5-1 plan
- Checked
This filing lists 20 non-derivative transactions and 3 derivative transactions. Open-market sales total $80.8M. It was filed 1 day 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 |
|---|---|
| Mallick DhirajCIK 0002039572 | Officer (Chief Operating 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 29, 2026 | Class A Common Stock | CConversionAcquired | +276,000 | $0.00F1 | $0 | 396,000 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −598 | $212.93F3 | −$127,332.14 | 395,402 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −18,274 | $212.20F4 | −$3,877,742.8 | 377,128 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −41,391 | $211.29F5 | −$8,745,504.39 | 335,737 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −46,427 | $210.27F6 | −$9,762,205.29 | 289,310 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −41,278 | $209.33F7 | −$8,640,723.74 | 248,032 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −20,714 | $208.38F8 | −$4,316,383.32 | 227,318 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −9,652 | $207.06F9 | −$1,998,543.12 | 217,666 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −9,047 | $206.13F10 | −$1,864,858.11 | 208,619 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −8,729 | $205.17F11 | −$1,790,928.93 | 199,890 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −27,492 | $204.17F12 | −$5,613,041.64 | 172,398 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −9,682 | $203.37F13 | −$1,969,028.34 | 162,716 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −5,637 | $201.91F14 | −$1,138,166.67 | 157,079 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −22,915 | $200.96F15 | −$4,604,998.4 | 134,164 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −17,848 | $199.89F16 | −$3,567,636.72 | 116,316 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −17,000 | $198.96F17 | −$3,382,320 | 99,316 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −5,170 | $197.85F18 | −$1,022,884.5 | 94,146 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −6,613 | $197.05F19 | −$1,303,091.65 | 87,533 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −18,703 | $195.56F20 | −$3,657,558.68 | 68,830 | Direct | |
| Sep 29, 2026 | Class A Common Stock | SSaleDisposed | −68,830 | $194.91F21 | −$13,415,655.3 | 0 | 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 29, 2026 | Class B Common Stock | MOption exerciseDisposed | −276,000 | $0.00 | $0 | 91,370 | Direct | |
| Sep 29, 2026 | Class A Common Stock | MOption exerciseAcquired | +276,000 | $0.00 | $0 | 796,807 | Direct | |
| Sep 29, 2026 | Class A Common Stock | CConversionDisposed | −276,000 | $0.00 | $0 | 520,807 | 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.
- F3
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $212.92 to $212.94, 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 $211.81 to $212.80, 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 $210.81 to $211.81, 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 $209.81 to $210.80, 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 $208.81 to $209.80, 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 $207.81 to $208.80, 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 $206.68 to $207.67, 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 $205.67 to $206.66, 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 $204.65 to $205.64, 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 $203.65 to $204.65, 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 $202.63 to $203.61, 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 $201.44 to $202.39, 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 $200.42 to $201.41, 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 $199.42 to $200.37, 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 $198.42 to $199.41, 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 $197.41 to $198.40, 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 $196.41 to $197.40, 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 $195.27 to $195.96, 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.
- F21
The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $194.27 to $195.26, 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.