Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Cerebras Systems Inc.CBRS · Entity 3072 | Chief Technology Officer | September 25, 2026 | September 28, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Cerebras Systems Inc.
Report date September 25, 2026 · Filed September 28, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Class A Common StockSEC Table I · non-derivative | Direct | 309,569 |
Ending reported balance
After 2026-09-25 transaction · row 11
11 source rows · reconciled sequenceRow 1 · 2026-09-25 · Conversion · Acquired 120,000 · Balance 465,569 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. Row 2 · 2026-09-25 · Gift · Disposed 36,000 · Balance 429,569 F2: The reporting person transferred 36,000 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. Row 3 · 2026-09-25 · Sale · Disposed 500 · Balance 429,069 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 $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. Row 4 · 2026-09-25 · Sale · Disposed 9,177 · Balance 419,892 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. 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. Row 5 · 2026-09-25 · Sale · Disposed 30,565 · Balance 389,327 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. 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. Row 6 · 2026-09-25 · Sale · Disposed 29,991 · Balance 359,336 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. 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. Row 7 · 2026-09-25 · Sale · Disposed 21,022 · Balance 338,314 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. 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. Row 8 · 2026-09-25 · Sale · Disposed 6,869 · Balance 331,445 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. 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. Row 9 · 2026-09-25 · Sale · Disposed 13,776 · Balance 317,669 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. 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. Row 10 · 2026-09-25 · Sale · Disposed 5,900 · Balance 311,769 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. 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. Row 11 · 2026-09-25 · Sale · Disposed 2,200 · Balance 309,569 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. 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. |
| Stock OptionSEC Table II · derivative / convertible security · Conversion / exercise price $5.48 · Expires 2034-02-06 | Direct | 172,146 |
Reported balance
After 2026-09-25 transaction · row 13
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 13 · 2026-09-25 · Exercise / conversion · Disposed 116,875 · Balance 172,146 F13: The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2024. |
| Stock OptionSEC Table II · derivative / convertible security · Conversion / exercise price $5.02 · Expires 2033-02-13 | Direct | 32,420 |
Reported balance
After 2026-09-25 transaction · row 14
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 14 · 2026-09-25 · Exercise / conversion · Disposed 3,125 · Balance 32,420 F14: The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2023. |
| Class B Common StockSEC Table II · derivative / convertible security | Direct | 7,702,992 |
Reported balance
After 2026-09-25 transaction · row 15
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 15 · 2026-09-25 · Exercise / conversion · Acquired 120,000 · Balance 7,702,992 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. |
| Class B Common StockSEC Table II · derivative / convertible security | Direct | 7,582,992 |
Reported balance
After 2026-09-25 transaction · row 16
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 16 · 2026-09-25 · Conversion · Disposed 120,000 · Balance 7,582,992 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. |
| Class B Common StockSEC Table II · derivative / convertible security | IndirectBy Spouse | 180,600 |
Reported balance
Holding disclosure · report date 2026-09-25 · row 12
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 12 · Balance 180,600 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. |
Filing footnotes · ownership attribution and instrument terms
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 36,000 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 $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.
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.
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.
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.
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.
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.
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.
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.
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.
F13: The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2024.
F14: The stock option vests in 48 substantially equal monthly installments beginning on February 1, 2023.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| May 15, 2026 Filed May 15, 2026 22:49 UTC | Cerebras Systems Inc. CBRS · Entity 3072 | OtherStock Option · Derivative | 350,000 | Not disclosed Strike: $2.40 | Not disclosed |
DisclosureSEC source: 0001628280-26-035739 · wk-form4_1778885380.xml · derivative · entry 6 Lie Sean · CIK 0002132472 · Chief Technology Officer · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Class A Common Stock · 350,000 shares Expires 2029-05-13 F2 · kind: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. F2 · price: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. F3 · derivative.exercise_date: The stock option is fully vested and exercisable. Read SEC document |
| May 15, 2026 Filed May 15, 2026 22:49 UTC | Cerebras Systems Inc. CBRS · Entity 3072 | OtherClass B Common Stock · Derivative | 180,600 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001628280-26-035739 · wk-form4_1778885380.xml · derivative · entry 5 Lie Sean · CIK 0002132472 · Chief Technology Officer · 10% owner 10b5-1 filing: No plan indicated Ownership: Indirect · By Spouse Disclosed balance after: 180,600 Underlying: Class A Common Stock · 180,600 shares Expires not disclosed F2 · derivative.exercise_price: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. F2 · kind: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. F2 · price: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. F2 · derivative.exercise_date: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. F2 · derivative.expiration_date: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. Read SEC document |
| May 15, 2026 Filed May 15, 2026 22:49 UTC | Cerebras Systems Inc. CBRS · Entity 3072 | OtherClass B Common Stock · Derivative | 8,209,731 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001628280-26-035739 · wk-form4_1778885380.xml · derivative · entry 4 Lie Sean · CIK 0002132472 · Chief Technology Officer · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 8,209,731 Underlying: Class A Common Stock · 8,209,731 shares Expires not disclosed F2 · derivative.exercise_price: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. F2 · kind: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. F2 · price: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. F2 · derivative.exercise_date: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. F2 · derivative.expiration_date: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. Read SEC document |
| May 15, 2026 Filed May 15, 2026 22:49 UTC | Cerebras Systems Inc. CBRS · Entity 3072 | OtherClass A Common Stock | 180,600 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001628280-26-035739 · wk-form4_1778885380.xml · nonDerivative · entry 3 Lie Sean · CIK 0002132472 · Chief Technology Officer · 10% owner 10b5-1 filing: No plan indicated Ownership: Indirect · By Spouse Disclosed balance after: 0 F2 · kind: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. F2 · price: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. Read SEC document |
| May 15, 2026 Filed May 15, 2026 22:49 UTC | Cerebras Systems Inc. CBRS · Entity 3072 | OtherClass A Common Stock | 8,209,731 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001628280-26-035739 · wk-form4_1778885380.xml · nonDerivative · entry 2 Lie Sean · CIK 0002132472 · Chief Technology Officer · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 F2 · kind: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. F2 · price: Immediately prior to the completion of the Issuer's initial public offering, each share of Class A common stock beneficially owned by the Reporting Person, including shares of Class A common stock underlying restricted stock unit ("RSU") and stock options awards, were reclassified into one share of Class B common stock in an exempt transaction pursuant to Rule 16b-7. Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. Read SEC document |
| May 13, 2026 Filed May 15, 2026 22:49 UTC | Cerebras Systems Inc. CBRS · Entity 3072 | Tax withholdingClass A Common Stock | 96,127 | $185.00 | $17,783,495.00 |
DisclosureSEC source: 0001628280-26-035739 · wk-form4_1778885380.xml · nonDerivative · entry 1 Lie Sean · CIK 0002132472 · Chief Technology Officer · 10% owner 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 8,209,731 F1 · kind: Represents shares withheld by the Issuer to satisfy tax liability on vesting of restricted stock units. Not a market sale. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.