Form 4 for CBRS Cerebras Systems Inc.
Accepted 2026-09-08 20:17:56 ET · period of report 2026-09-04 · accession 0001628280-26-060987 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-09-08 20:17 | 2026-09-04 | CBRS | Feldman Andrew D. | CEO, Pres, Dir | C - Cnv Deriv | $0.00 | +37.4K | 54.3K | +222% | $0 |
| DM | 2026-09-08 20:17 | 2026-09-04 | CBRS | Feldman Andrew D. | CEO, Pres, Dir | S - Sale | $210.46 | -37.4K | 16.9K | -69% | -$7.88M |
| DI | 2026-09-08 20:17 | 2026-09-08 | CBRS | Feldman Andrew D. | CEO, Pres, Dir | J - Other | $0.00 | +120 | 806 | +17% | $0 |
| DM | 2026-09-08 20:17 | 2026-09-04 | CBRS | Feldman Andrew D. | CEO, Pres, Dir | M - OptEx | $0.00 | 0 | 13.98M | New | $0 |
| D | 2026-09-08 20:17 | 2026-09-04 | CBRS | Feldman Andrew D. | CEO, Pres, Dir | C - Cnv Deriv | $0.00 | -37.4K | 13.95M | -0.3% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Class A Common Stock | 2026-09-04 | C | A | 37,441 | $0.00 | 54,294 | D | — | — | (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. (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 | Common | Class A Common Stock | 2026-09-04 | S | D | 1,100 | $199.18 | 53,194 | D | — | — | (F2) 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. (F3) The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $199.00 to $199.87, 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. |
| 3 | Common | Class A Common Stock | 2026-09-04 | S | D | 300 | $200.79 | 52,894 | D | — | — | (F2) 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 $200.16 to $201.12, 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. |
| 4 | Common | Class A Common Stock | 2026-09-04 | S | D | 300 | $201.75 | 52,594 | D | — | — | (F2) 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. (F5) The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $201.45 to $202.11, 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. |
| 5 | Common | Class A Common Stock | 2026-09-04 | S | D | 900 | $202.97 | 51,694 | D | — | — | (F2) 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. (F6) The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $202.59 to $203.43, 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. |
| 6 | Common | Class A Common Stock | 2026-09-04 | S | D | 1,200 | $204.06 | 50,494 | D | — | — | (F2) 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. (F7) 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 $204.62, 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. |
| 7 | Common | Class A Common Stock | 2026-09-04 | S | D | 800 | $206.30 | 49,694 | D | — | — | (F2) 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. (F8) The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $206.02 to $206.53, 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. |
| 8 | Common | Class A Common Stock | 2026-09-04 | S | D | 1,500 | $207.80 | 48,194 | D | — | — | (F2) 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. (F9) The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $207.21 to $208.19, 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. |
| 9 | Common | Class A Common Stock | 2026-09-04 | S | D | 1,707 | $208.84 | 46,487 | D | — | — | (F2) 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. (F10) The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $208.39 to $209.38, 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. |
| 10 | Common | Class A Common Stock | 2026-09-04 | S | D | 6,721 | $209.99 | 39,766 | D | — | — | (F2) 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. (F11) The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $209.41 to $210.34, 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. |
| 11 | Common | Class A Common Stock | 2026-09-04 | S | D | 6,153 | $210.91 | 33,613 | D | — | — | (F2) 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. (F12) The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $210.42 to $211.42, 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. |
| 12 | Common | Class A Common Stock | 2026-09-04 | S | D | 7,439 | $211.85 | 26,174 | D | — | — | (F2) 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. (F13) The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $211.42 to $212.39, 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. |
| 13 | Common | Class A Common Stock | 2026-09-04 | S | D | 3,324 | $213.04 | 22,850 | D | — | — | (F2) 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. (F14) The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $212.50 to $213.49, 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. |
| 14 | Common | Class A Common Stock | 2026-09-04 | S | D | 3,897 | $213.95 | 18,953 | D | — | — | (F2) 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. (F15) The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $213.50 to $214.48, 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. |
| 15 | Common | Class A Common Stock | 2026-09-04 | S | D | 1,400 | $214.98 | 17,553 | D | — | — | (F2) 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. (F16) The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $214.52 to $215.33, 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. |
| 16 | Common | Class A Common Stock | 2026-09-04 | S | D | 600 | $215.81 | 16,953 | D | — | — | (F2) 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. (F17) The sale price reported in Column 4 of Table 1 represents the weighted average sale price of the shares sold ranging from $215.53 to $216.06, 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. |
| 17 | Common | Class A Common Stock | 2026-09-04 | S | D | 100 | $216.62 | 16,853 | D | — | — | (F2) 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. |
| 18 | Common | Class A Common Stock | 2026-09-08 | J | A | 120 | $0.00 | 806 | I By Feldman Bravo Family Trust | — | — | (F18) Represents a pro-rata, in-kind distribution not for additional consideration. |
| 19 | Derivative | Stock Option | 2026-09-04 | M | D | 37,441 | $0.00 | 525,000 | D | $2.72 · — to 2030-12-07 | 37,441 Class B Common Stock | (F19) The stock option is fully vested and exercisable. |
| 20 | Derivative | Class B Common Stock | 2026-09-04 | M | A | 37,441 | $0.00 | 13,982,575 | D | — · — to — | 37,441 Class A Common Stock | (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. (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. (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. |
| 21 | Derivative | Class B Common Stock | 2026-09-04 | C | D | 37,441 | $0.00 | 13,945,134 | D | — · — to — | 37,441 Class A Common Stock | (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. (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. (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. |