AMPX Amprius Technologies, Inc.
Price Chart
Executive Summary
Director Sun Kang filed a Form 144 notice of intent to sell 356 shares of Amprius Technologies common stock, valued at approximately $6,121, to cover withholding taxes upon vesting of restricted stock units. The filing is a routine administrative step tied to RSU settlement, not a discretionary insider sale.
Actionable Insight
This is a tax-withholding sale tied to RSU vesting, not a discretionary insider disposition. No actionable signal for AMPX-WT warrant holders. Monitor the company's next earnings for operational updates.
Key Facts
- Director Sun Kang filed Form 144 on 2026-05-28 for 356 shares of common stock.
- Estimated aggregate value of proposed sale: $6,120.89.
- Sale is to cover withholding taxes upon vesting of restricted stock units (RSUs).
- Shares acquired on 2026-05-20 via RSU release (compensation, not open-market purchase).
- No prior open-market sales by this insider in the filing; all listed prior sales are under a 10b5-1 plan.
- Filing relates to AMPX common, not the AMPX-WT warrant ticker.
Financial Impact
Proceeds of approximately $6,121 — immaterial relative to any reasonable market cap or insider holding size.
Risk Factors
- None from this filing — the sale is mandatory and de minimis.
Market Snapshot
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001476220-26-000028 |
| Document: 0001476220-26-000028-index.html | 0001476220-26-000028 |
| Document: 0001476220-26-000028.txt | 0001476220-26-000028 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
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Jun 11, 2026
1d ago
|
Insider Cluster
| $17.13 awaiting T+5 | awaiting T+5 | — | $16.31 (−4.79%) |
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Jun 11, 2026
1d ago
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Institutional Cluster
| $16.45 awaiting T+5 | awaiting T+5 | — | $16.31 (−0.85%) |
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Jun 8, 2026
4d ago
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144
| $4.84 awaiting T+5 | awaiting T+5 | — | $16.31 (−236.98%) |
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May 28, 2026
15d ago
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144
| — | awaiting T+5 | — | — |
|
May 28, 2026
15d ago
|
Insider Cluster
| $20.28 $21.74 | ▼ −7.20% | ▼ −7.49% | $16.31 (+19.58%) |
|
May 28, 2026
15d ago
|
Insider Cluster
| $20.28 $19.69 | ▲ +2.91% | ▲ +0.39% | $16.31 (+19.58%) |
|
May 26, 2026
17d ago
|
Insider Cluster
| $17.16 $22.91 | ▼ −33.51% | ▼ −32.30% | $16.31 (+4.95%) |
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May 26, 2026
17d ago
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144
| — | awaiting T+5 | — | — |
|
May 26, 2026
17d ago
|
Insider Cluster
| $17.16 $22.91 | ▲ +33.51% | ▲ +32.30% | $16.31 (−4.95%) |
|
Apr 21, 2026
7w ago
|
8-K
| — | awaiting T+5 | — | — |
US Market Status
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