Traders should monitor for further insider selling or downward revisions in fundamentals; this level of coordinated selling by multiple directors may signal lack of confidence despite recent stock strength.
Price Chart
Executive Summary
Two Amprius Technologies directors, HSIEH Wen Hsuan and Chu Steven, conducted a cluster of transactions over the past week, including open-market sales totaling $10.1 million and derivative exercises for over 800,000 shares. The majority of the economic activity stems from open-market selling, representing a material portion of recent trading volume.
Key Financial Metrics
Key Facts
- HSIEH Wen Hsuan (Director) sold 282,500 shares on 2026-03-12 at $18.546, generating $5.24M in proceeds.
- Chu Steven (Director) sold 266,632 shares across two trades (2026-03-10 and 2026-03-12), totaling $4.85M in proceeds.
- Total open-market sales by insiders in the past 7 days: $10.1M.
- Both directors exercised in-the-money derivatives at low strike prices ($0.62–$2.61), then sold shares on the open market.
- Total value of open-market sales represents 0.4% of Amprius' $2.5B market cap — significant for insider activity.
Financial Impact
$10.1 million in open-market share sales by two directors; no offsetting purchases reported.
Risk Factors
- Perception of insider pessimism following share price appreciation.
- Potential for increased selling pressure if other insiders follow suit.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CONTEXT: Insider Cluster Data (9 trades, 7d window) | cluster-AMPX-1773439752025 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 9, 2026 17d ago | S-3ASR | $8.87 | awaiting T+60 | — | $8.35 (−5.86%) |
Sep 25, 2026 4w ago | 8-K | $9.60 | awaiting T+60 | — | $8.35 (−13.02%) |
Aug 25, 2026 8w ago | Insider Cluster | $10.20 | awaiting T+60 | — | $8.35 (−18.14%) |
Aug 13, 2026 10w ago | 8-K | $12.51 | awaiting T+60 | — | $8.35 (−33.25%) |
Aug 1, 2026 12w ago | Institutional Cluster | $10.12 | awaiting T+60 | — | $8.35 (+17.49%) |
Jun 11, 2026 19w ago | Insider Cluster | $16.31 $10.39 | ▼ −36.30% | ▼ −39.56% | $8.35 (−48.80%) |
Jun 11, 2026 19w ago | Institutional Cluster | $17.10 $9.89 | ▼ −42.16% | ▼ −46.56% | $8.35 (−51.17%) |
Jun 8, 2026 20w ago | 144 | $4.84 | awaiting T+60 | — | $8.35 (−72.52%) |
May 28, 2026 21w ago | 144 | — | awaiting T+60 | — | — |
May 28, 2026 21w ago | Insider Cluster | $20.28 $9.86 | ▲ +51.38% | ▲ +52.56% | $8.35 (+58.83%) |
US Market Status
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