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144 ·Filed Apr 1, 2026

AMPX

Amprius Technologies, Inc.
BEARISH
Impact 6/10
Horizondays Processed6mo ago SEC0001950047-26-003170
Form 144 — notice of proposed sale of securities
Actionable Insight ▼ Bearish

Traders should monitor for actual sales execution, as continued insider selling—especially under a pre-arranged 10b5-1 plan—may signal lack of confidence in near-term prospects despite management's public stance. Consider hedging or reducing exposure if volume spikes coincide with weakening fundamentals.

DirectionBearish
Confidencehigh
Horizondays

Price Chart

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Executive Summary

Sun Kang, a director and officer of Amprius Technologies (AMPX-WT), filed a Form 144 to propose the sale of 1,500,000 common shares, valued at approximately $25.29 million based on current market prices. This follows a series of prior 10b5-1 sales totaling over 1.7 million shares in early 2026, indicating a structured divestment plan.

Key Facts

  • Reporting owner: Sun Kang, Director and Officer of Amprius Technologies
  • Proposed sale: 1,500,000 common shares
  • Approximate value: $25,290,000 (based on $16.86/share)
  • Filing date: April 1, 2026
  • Sales to be conducted under Rule 10b5-1 plan
  • Recent prior sales under 10b5-1 plan: 1,750,710 shares for ~$20.8 million between January and March 2026

Financial Impact

$25.29 million in proposed insider sales, with recent actual sales of $20.8 million in Q1 2026

insider ownershipmarket sentimentpotential share dilution perception

Risk Factors

  • Sustained insider selling could pressure share price and erode investor confidence
  • Potential perception of overhang on the stock from announced future sales

Market Snapshot

Exchange
NYSE
Sector
Miscellaneous Electrical Machinery, Equipment & Supplies

Investment Themes

Documents Analyzed

This report is based on 3 SEC documents filed with EDGAR.

DocumentAccession Number
144 Filing (Primary)0001950047-26-003170
Document: 0001950047-26-003170-index.html0001950047-26-003170
Document: 0001950047-26-003170.txt0001950047-26-003170
19 reports for AMPX
Performance horizon
71% Hit rate @ T+60 5 of 7 directional calls Went positive at some point 6 of 9 best @ T+60▲ +51.38%May 28, 2026
Filters
Rows
Reports for AMPX — sortable, filterable
TypeNow
Oct 9, 2026
17d ago
S-3ASR
NEUTRAL ★ 3/10
$8.87awaiting T+60—$8.35 (−5.86%)
Sep 25, 2026
4w ago
8-K
BULLISH ★ 6/10
$9.60awaiting T+60—$8.35 (−13.02%)
Aug 25, 2026
8w ago
Insider Cluster
NEUTRAL ★ 3/10
$10.20awaiting T+60—$8.35 (−18.14%)
Aug 13, 2026
10w ago
8-K
NEUTRAL ★ 3/10
$12.51awaiting T+60—$8.35 (−33.25%)
Aug 1, 2026
12w ago
Institutional Cluster
BEARISH ★ 5/10
$10.12awaiting T+60—$8.35 (+17.49%)
Jun 11, 2026
19w ago
Insider Cluster
NEUTRAL ★ 2/10
$16.31 $10.39▼ −36.30%▼ −39.56%$8.35 (−48.80%)
Jun 11, 2026
19w ago
Institutional Cluster
BULLISH ★ 5/10
$17.10 $9.89▼ −42.16%▼ −46.56%$8.35 (−51.17%)
Jun 8, 2026
20w ago
144
BEARISH ★ 5/10
$4.84awaiting T+60—$8.35 (−72.52%)
May 28, 2026
21w ago
144
NEUTRAL ★ 1/10
—awaiting T+60——
May 28, 2026
21w ago
Insider Cluster
BEARISH ★ 5/10
$20.28 $9.86▲ +51.38%▲ +52.56%$8.35 (+58.83%)
Showing 10 of 19

US Market Status

Market Closed — Opens Wed (10h 28m)

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Report published Apr 1, 2026