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AMPX
NYSE Manufacturing

Officer Kang Sun Files Intent to Sell $4.8M in AMPX Shares

Arie Shkolnikov · Analysis by Wiseek AI
More coverage: Electrical Equipment Stocks · Industrial
Sentiment info
Negative
Importance info
8
Price
$10.15
Mkt Cap
$1.306B
52W Low
$1.7
52W High
$16.03
52W Position info
497% above low
Off High info
37% below high
Rel. Volume info
1.2× avg
Market data snapshot near publication time

AMPX has more than doubled off its 52-week low of $1.7.

Summary

Amprius Technologies officer Kang Sun has filed a Form 144 indicating an intent to sell 506,267 shares of common stock, valued at approximately $4.8 million.


Key Events · Ownership and Investor Activity · AMPX

  • Officer Intent to Sell

    Kang Sun, an officer and director of Amprius Technologies, filed a Form 144 to sell 506,267 shares of common stock.

  • Significant Value

    The proposed sale is valued at approximately $4.8 million.

  • Shares from Option Exercise

    The shares intended for sale were acquired through the exercise of stock options on the same day as the filing.

  • Recent Selling History

    This filing follows previous sales by Mr. Sun totaling over $11 million in the past three months, including a large sale under a 10b5-1 plan.


Analysis · AMPX · Manufacturing

This Form 144 filing signals a significant intent to sell by Kang Sun, an officer and director of Amprius Technologies. The proposed sale of nearly $4.8 million in shares, following the exercise of stock options, represents a notable transaction. This follows substantial sales by Mr. Sun in the past three months, including a large sale under a 10b5-1 plan. While option exercises often lead to sales for liquidity or tax purposes, the cumulative selling activity from an insider could be interpreted as a lack of conviction or a move to diversify holdings. Investors should monitor actual sales reported on Form 4.

At the time of this filing, AMPX was trading at $10.15 on NYSE in the Manufacturing sector, with a market capitalization of approximately $1.3B. The 52-week trading range was $1.70 to $16.03. This filing was assessed with negative market sentiment and an importance score of 8 out of 10.

View Main SEC Filing

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AMPX - Latest Insights

AMPX
May 19, 2026, 4:40 PM EDT
Filing Type: 8-K/A
Importance Score:
8
Price at Filing: $15.40
Real-time Price: $9.85 info
Change: -$5.55 (-36%) info
Market Cap: $1.375B info
AMPX
May 07, 2026, 5:36 PM EDT
Filing Type: 8-K
Importance Score:
8
Price at Filing: $16.42
Real-time Price: $9.85 info
Change: -$6.57 (-40%) info
Market Cap: $1.375B info
AMPX
May 07, 2026, 4:52 PM EDT
Filing Type: 10-Q
Importance Score:
7
Price at Filing: $16.34
Real-time Price: $9.85 info
Change: -$6.49 (-40%) info
Market Cap: $1.375B info
AMPX
May 06, 2026, 4:40 PM EDT
Source: Reuters
Importance Score:
8
Price at Filing: $20.38
Real-time Price: $9.85 info
Change: -$10.53 (-52%) info
Market Cap: $1.375B info
AMPX
May 06, 2026, 4:11 PM EDT
Filing Type: 8-K
Importance Score:
8
Price at Filing: $20.05
Real-time Price: $9.85 info
Change: -$10.20 (-51%) info
Market Cap: $1.375B info