Monitor next quarterly filing for any change in insider selling pattern or fundamental deterioration. The small size and lack of C-suite cluster buying suggest no immediate read-through.
Price Chart
Executive Summary
Two insiders at Ambarella sold a total of $145K in shares over a one-week window, with the CFO selling $128K and a director selling $18K. The total value is 0.04% of the company's $326M market cap, making this a trivial, routine cluster. No open-market purchases were present, and the sales are small relative to company size, indicating no material insider concern.
Key Financial Metrics
Key Facts
- CFO John Alexander sold 1,900 shares for $128K on 2026-09-18
- Director Christopher Paisley sold 250 shares for $18K on 2026-09-25
- Total insider sales of $145K represent 0.04% of Ambarella's $326M market cap
- No open-market purchases (code P) were reported in the cluster
- Sales are below the 0.1% materiality threshold for insider selling
Financial Impact
Insider sales of $145K are trivial relative to $326M market cap (0.04%)
Risk Factors
- Insider selling could increase if fundamentals weaken, but current level is non-informative
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-AMBA-1790648143837 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 28, 2026 28d ago | Insider Cluster | $68.73 | awaiting T+20 | — | $66.92 (−2.64%) |
Sep 25, 2026 4w ago | 144 | $72.68 $66.50 | ▼ −8.50% | ▼ −7.03% | $66.92 (−7.93%) |
Sep 21, 2026 4w ago | Insider Cluster | $67.06 $63.22 | ▲ +5.73% | ▲ +5.17% | $66.92 (+0.22%) |
Sep 18, 2026 5w ago | Insider Cluster | $68.85 $62.76 | ▲ +8.85% | ▲ +7.94% | $66.92 (+2.81%) |
Aug 11, 2026 10w ago | Press Release | $83.53 | awaiting T+20 | — | $66.92 (−19.89%) |
Jul 2, 2026 16w ago | Insider Cluster | $79.73 $82.68 | ▲ +3.70% | ▲ +2.85% | $66.92 (−16.07%) |
May 28, 2026 21w ago | Insider Cluster | $72.18 $67.01 | ▼ −7.16% | ▼ −5.37% | $66.92 (−7.29%) |
May 28, 2026 21w ago | 8-K | $72.18 $67.01 | ▼ −7.16% | ▼ −5.37% | $66.92 (−7.29%) |
May 15, 2026 23w ago | DEFA14A | $78.88 $67.12 | ▼ −14.91% | ▼ −16.49% | $66.92 (−15.17%) |
May 4, 2026 25w ago | Press Release | $70.72 | awaiting T+20 | — | $66.92 (−5.38%) |
US Market Status
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