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CBRS · Cerebras Systems Inc.

Everything on this page is public record — SEC Form 4 filings and congressional disclosures — alongside any INSIDER SCANNER research case for this company.

Open-market buys0
Open-market sells11
Research cases0
Last filing2026-08-21

Insider flow: Selling only — a count of disclosed transactions, not a rating or a recommendation.

Insider transaction timeline

Every reported transaction, positioned by trade date. Purchases sit above the axis, sales below; circle area is proportional to dollar value. No share-price line is drawn — this feed carries transaction prices only, and a price history inferred from them would imply market data the filings do not contain.

Open-market purchase Open-market sale
2026-08-20 — Lie Sean · sold 11,706 @ $203.78 2026-08-20 — Lie Sean · sold 47,766 @ $204.87 2026-08-20 — Lie Sean · sold 133,383 @ $205.67 2026-08-20 — Lie Sean · sold 93,017 @ $206.67 2026-08-20 — Lie Sean · sold 108,507 @ $207.68 2026-08-20 — Lie Sean · sold 119,311 @ $208.69 2026-08-20 — Lie Sean · sold 114,976 @ $209.86 2026-08-20 — Lie Sean · sold 46,214 @ $210.56 2026-08-20 — Lie Sean · sold 10,715 @ $211.42 2026-08-20 — Lie Sean · sold 24,652 @ $212.64 2026-08-21 — Lie Sean · sold 16,293 @ $210.01
2026-08-202026-08-21

Insider participation

One row per insider, one cell per reported transaction, shaded by value. Repeat buying and activity clustered in time are visible at a glance.

Lie Sean Chief Technology Officer
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The analysis built on top of these filings

The filings above are public record and stay public here. What an account adds for $CBRS is the reading of them — and for this company, that is what the list below says it is, no more.

  • Transaction timelineThe [{'transaction_date': '2026-08-21', 'insider_name': 'Lie Sean', 'insider_title': 'Chief Technology Officer', 'transaction_type': 'Open-market sell', 'shares': 16293.0, 'price': 210.01, 'value': 3421692.93, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Lie Sean', 'insider_title': 'Chief Technology Officer', 'transaction_type': 'Open-market sell', 'shares': 11706.0, 'price': 203.78, 'value': 2385448.68, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Lie Sean', 'insider_title': 'Chief Technology Officer', 'transaction_type': 'Open-market sell', 'shares': 47766.0, 'price': 204.87, 'value': 9785820.42, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Lie Sean', 'insider_title': 'Chief Technology Officer', 'transaction_type': 'Open-market sell', 'shares': 133383.0, 'price': 205.67, 'value': 27432881.61, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Lie Sean', 'insider_title': 'Chief Technology Officer', 'transaction_type': 'Open-market sell', 'shares': 93017.0, 'price': 206.67, 'value': 19223823.39, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Lie Sean', 'insider_title': 'Chief Technology Officer', 'transaction_type': 'Open-market sell', 'shares': 108507.0, 'price': 207.68, 'value': 22534733.76, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Lie Sean', 'insider_title': 'Chief Technology Officer', 'transaction_type': 'Open-market sell', 'shares': 119311.0, 'price': 208.69, 'value': 24899012.59, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Lie Sean', 'insider_title': 'Chief Technology Officer', 'transaction_type': 'Open-market sell', 'shares': 114976.0, 'price': 209.86, 'value': 24128863.36, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Lie Sean', 'insider_title': 'Chief Technology Officer', 'transaction_type': 'Open-market sell', 'shares': 46214.0, 'price': 210.56, 'value': 9730819.84, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Lie Sean', 'insider_title': 'Chief Technology Officer', 'transaction_type': 'Open-market sell', 'shares': 10715.0, 'price': 211.42, 'value': 2265365.3, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Lie Sean', 'insider_title': 'Chief Technology Officer', 'transaction_type': 'Open-market sell', 'shares': 24652.0, 'price': 212.64, 'value': 5242001.28, 'is_buy': False}] reported transactions plotted over the window rather than listed, so concentration is visible.

Not available for CBRS today: no reported open-market purchases in this window, so there is no insider cost basis to compute; no research case — nothing here has cleared the scoring threshold. Both appear on this page on their own if that changes.

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Not financial advice. This page reports public filings and past research output. It is not a recommendation to buy or sell, and no price target here is a prediction. Trade at your own risk.