Follow the people · Insider
Sean Lie
Sean Lie files insider transactions with the SEC as a chief technology officer of Cerebras Systems (CBRS). We hold 5 disclosed purchases and sales filed since 15 May 2026, 5 of them in the last 90 days.
- Files forCBRS
- Disclosed buys and sells5 in all, 5 in the last 90 days
- Last disclosure8 September 2026
Positions held
1 post we hold — a term names its own dates; a run of filings only says when they filed- Filed 13 May 2026 — 4 September 2026Chief Technology Officer · Cerebras Systems (CBRS)91 Form 4 lines · source: SEC Form 4
Everything they disclosed
91 entries, newest first — one per disclosure report, one per Form 4 line- converted 46,141 shares of Cerebras SystemsSEC Form 48 September 2026Class A Common Stock · traded 4 September 2026 · filed 8 September 2026
- gave away 16,038 shares of Cerebras SystemsSEC Form 48 September 2026Class A Common Stock · traded 4 September 2026 · filed 8 September 2026
- ▼ sold on the open market 53,460 shares of Cerebras SystemsSEC Form 48 September 2026Class A Common Stock · traded 4 September 2026 · filed 8 September 2026
- exercised options over 46,141 shares of Cerebras Systems (a derivative holding)SEC Form 48 September 2026Stock Option · traded 4 September 2026 · filed 8 September 2026
- exercised options over 46,141 shares of Cerebras Systems (a derivative holding)SEC Form 48 September 2026Class B Common Stock · traded 4 September 2026 · filed 8 September 2026
- converted 46,141 shares of Cerebras Systems (a derivative holding)SEC Form 48 September 2026Class B Common Stock · traded 4 September 2026 · filed 8 September 2026
- converted 696,798 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 20 August 2026 · filed 21 August 2026
- ▼ sold on the open market 46,214 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 20 August 2026 · filed 21 August 2026
- ▼ sold on the open market 10,715 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 20 August 2026 · filed 21 August 2026
- ▼ sold on the open market 24,652 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 20 August 2026 · filed 21 August 2026
- converted 16,293 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 21 August 2026 · filed 21 August 2026
- ▼ sold on the open market 16,293 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 21 August 2026 · filed 21 August 2026
- exercised options over 308,236 shares of Cerebras Systems (a derivative holding)SEC Form 421 August 2026Stock Option · traded 20 August 2026 · filed 21 August 2026
- exercised options over 138,236 shares of Cerebras Systems (a derivative holding)SEC Form 421 August 2026Stock Option · traded 20 August 2026 · filed 21 August 2026
- exercised options over 87,326 shares of Cerebras Systems (a derivative holding)SEC Form 421 August 2026Stock Option · traded 20 August 2026 · filed 21 August 2026
- exercised options over 114,455 shares of Cerebras Systems (a derivative holding)SEC Form 421 August 2026Stock Option · traded 20 August 2026 · filed 21 August 2026
- exercised options over 48,545 shares of Cerebras Systems (a derivative holding)SEC Form 421 August 2026Stock Option · traded 20 August 2026 · filed 21 August 2026
- gave away 213,074 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 20 August 2026 · filed 21 August 2026
- exercised options over 696,798 shares of Cerebras Systems (a derivative holding)SEC Form 421 August 2026Class B Common Stock · traded 20 August 2026 · filed 21 August 2026
- converted 696,798 shares of Cerebras Systems (a derivative holding)SEC Form 421 August 2026Class B Common Stock · traded 20 August 2026 · filed 21 August 2026
- exercised options over 16,293 shares of Cerebras Systems (a derivative holding)SEC Form 421 August 2026Stock Option · traded 21 August 2026 · filed 21 August 2026
- exercised options over 16,293 shares of Cerebras Systems (a derivative holding)SEC Form 421 August 2026Class B Common Stock · traded 21 August 2026 · filed 21 August 2026
- converted 16,293 shares of Cerebras Systems (a derivative holding)SEC Form 421 August 2026Class B Common Stock · traded 21 August 2026 · filed 21 August 2026
- ▼ sold on the open market 11,706 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 20 August 2026 · filed 21 August 2026
- ▼ sold on the open market 47,766 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 20 August 2026 · filed 21 August 2026
- ▼ sold on the open market 133,383 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 20 August 2026 · filed 21 August 2026
- ▼ sold on the open market 93,017 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 20 August 2026 · filed 21 August 2026
- ▼ sold on the open market 108,507 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 20 August 2026 · filed 21 August 2026
- ▼ sold on the open market 119,311 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 20 August 2026 · filed 21 August 2026
- ▼ sold on the open market 114,976 shares of Cerebras SystemsSEC Form 421 August 2026Class A Common Stock · traded 20 August 2026 · filed 21 August 2026
- converted 616,706 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 1,599 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 492 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 202 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 335 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 457 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 347 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 95 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 147 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 47 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 243 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 1 share of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 277 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 224 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 590 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 301 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 203 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 11 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 9 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 771 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- converted 616,706 shares of Cerebras Systems (a derivative holding)SEC Form 420 August 2026Class B Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 1,059 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 1,807 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 1,344 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 1,670 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 1,894 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 3,723 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- ▼ sold on the open market 3,409 shares of Cerebras SystemsSEC Form 420 August 2026Class A Common Stock · traded 18 August 2026 · filed 20 August 2026
- converted 10,033 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 242 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 300 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 200 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 200 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 300 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 705 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 100 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 104 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- converted 10,033 shares of Cerebras Systems (a derivative holding)SEC Form 429 June 2026Class B Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 2,534 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 3,353 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 922 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 400 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 110 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 263 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 200 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- ▼ sold on the open market 100 shares of Cerebras SystemsSEC Form 429 June 2026Class A Common Stock · traded 25 June 2026 · filed 29 June 2026
- had shares withheld for tax on 96,127 shares of Cerebras SystemsSEC Form 415 May 2026Class A Common Stock · traded 13 May 2026 · filed 15 May 2026
- acquired or disposed of, other 400,000 shares of Cerebras Systems (a derivative holding)SEC Form 415 May 2026Stock Option · traded 15 May 2026 · filed 15 May 2026
- acquired or disposed of, other 350,000 shares of Cerebras Systems (a derivative holding)SEC Form 415 May 2026Stock Option · traded 15 May 2026 · filed 15 May 2026
- acquired or disposed of, other 175,000 shares of Cerebras Systems (a derivative holding)SEC Form 415 May 2026Stock Option · traded 15 May 2026 · filed 15 May 2026
- acquired or disposed of, other 100,000 shares of Cerebras Systems (a derivative holding)SEC Form 415 May 2026Stock Option · traded 15 May 2026 · filed 15 May 2026
- acquired or disposed of, other 150,000 shares of Cerebras Systems (a derivative holding)SEC Form 415 May 2026Stock Option · traded 15 May 2026 · filed 15 May 2026
- acquired or disposed of, other 400,000 shares of Cerebras Systems (a derivative holding)SEC Form 415 May 2026Stock Option · traded 15 May 2026 · filed 15 May 2026
- acquired or disposed of, other 8,209,731 shares of Cerebras SystemsSEC Form 415 May 2026Class A Common Stock · traded 15 May 2026 · filed 15 May 2026
- acquired or disposed of, other 180,600 shares of Cerebras SystemsSEC Form 415 May 2026Class A Common Stock · traded 15 May 2026 · filed 15 May 2026
- acquired or disposed of, other 8,209,731 shares of Cerebras Systems (a derivative holding)SEC Form 415 May 2026Class B Common Stock · traded 15 May 2026 · filed 15 May 2026
- acquired or disposed of, other 180,600 shares of Cerebras Systems (a derivative holding)SEC Form 415 May 2026Class B Common Stock · traded 15 May 2026 · filed 15 May 2026
- acquired or disposed of, other 350,000 shares of Cerebras Systems (a derivative holding)SEC Form 415 May 2026Stock Option · traded 15 May 2026 · filed 15 May 2026
- acquired or disposed of, other 175,000 shares of Cerebras Systems (a derivative holding)SEC Form 415 May 2026Stock Option · traded 15 May 2026 · filed 15 May 2026
- acquired or disposed of, other 100,000 shares of Cerebras Systems (a derivative holding)SEC Form 415 May 2026Stock Option · traded 15 May 2026 · filed 15 May 2026
- acquired or disposed of, other 150,000 shares of Cerebras Systems (a derivative holding)SEC Form 415 May 2026Stock Option · traded 15 May 2026 · filed 15 May 2026
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.