Insider Cluster (2 insiders) ·Filed Aug 19, 2026
Insider cluster: 2 insiders, $3.6M total
Actionable Insight • Neutral
The sales are routine post-IPO/vesting-related director diversification, not a bearish signal. Monitor for any C-suite insider selling or a material increase in volume.
Latest settled — T+20d ⚠ clustered
CBRS ▼ -5.43% at T+20d
NEUTRAL call -5.43% · α vs SPY -5.43% · entry $209.76 → $198.37
Latest observation: T+45 -28.94% FF3 residual α
T+1d
-6.50%
call -6.50% · α -6.91%
$196.13
settled 2mo ago
T+5d
-11.01%
call -11.01% · α -12.12%
$186.67
settled 2mo ago
T+20d
-5.43%
call -5.43% · α -5.43%
$198.37
settled 6w ago
T+60d
Pending
in 17d
Price Chart
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Executive Summary
Two directors at Cerebras Systems sold a combined $3.56M in open-market sales within a week, following a wave of derivative conversions and non-cash transactions. The cluster is not actionable as a directional signal.
Key Financial Metrics
Direction
selling
Total Value
$3.6M
Insiders
2
Key Facts
- Director Steven Vassallo sold 6,081 shares at $216.38 for $1.32M on 2026-08-14.
- Director Eric Vishria sold 10,000 shares at $224.20 for $2.24M on 2026-08-17.
- Total open-market sales: $3.56M, representing ~0.007% of the $52.3B market cap.
- Both directors also had non-cash derivative conversions (Vassallo: 347,782 shares; Vishria: 110,950 shares) on the same dates, consistent with post-IPO lockup expiration or vesting.
- No C-suite executives (CEO/CFO) participated in the cluster.
Financial Impact
Two directors sold $3.56M combined, trivial relative to $52.3B market cap
insider ownership
Risk Factors
- Sales could accelerate if lockup expiration triggers broader insider selling
- Historical cluster reports on CBRS have been unreliable predictors of stock movement
Market Snapshot
Exchange
Nasdaq
Analyst Consensus
83% bullish (18 analysts)
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-CBRS-1787176889928 |
25 reports for CBRS
73% Hit rate @ T+1 Went positive at some point 8 of 11 best @ T+5▲ +13.66%
Filters
Rows
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 20, 2026 5d ago | Institutional Cluster | $117.98 $108.94 | ▼ −7.66% | ▼ −6.48% | $110.58 (−6.27%) |
Oct 20, 2026 5d ago | Press Release | $117.98 | awaiting T+1 | — | $110.58 (−6.27%) |
Oct 12, 2026 14d ago | Institutional Cluster | $146.62 $149.09 | ▲ +1.68% | ▲ +1.69% | $110.58 (−24.58%) |
Sep 30, 2026 25d ago | Insider Cluster | $169.52 $166.43 | ▲ +1.82% | ▲ +2.56% | $110.58 (+34.77%) |
Sep 30, 2026 25d ago | Insider Cluster | $169.52 $166.43 | ▲ +1.82% | ▲ +2.56% | $110.58 (+34.77%) |
Sep 8, 2026 6w ago | Insider Cluster | $196.20 $191.34 | ▲ +2.48% | ▲ +1.88% | $110.58 (+43.64%) |
Sep 8, 2026 6w ago | Insider Cluster | $196.20 $191.34 | ▲ +2.48% | ▲ +1.88% | $110.58 (+43.64%) |
Sep 4, 2026 7w ago | 144 | $199.77 $196.20 | ▼ −1.79% | ▼ −1.32% | $110.58 (−44.65%) |
Sep 1, 2026 7w ago | Press Release | $172.62 $184.52 | ▲ +6.89% | ▲ +6.45% | $110.58 (−35.94%) |
Aug 25, 2026 8w ago | Insider Cluster | $182.15 $186.67 | ▲ +2.48% | ▲ +1.83% | $110.58 (−39.29%) |
Showing 10 of 25
US Market Status
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