SEC EDGARAUG 251 min read$AMPX

Sun Kang sold $642K of AMPX

Sun Kang sold 62,101 shares of Amprius Technologies, Inc. (AMPX) at $10.34 ($0.64M total) on 2026-08-21.

Original reporting

SEC EDGAR · Sun Kang

Published Aug 25, 2026, 9:22 PM UTC

Analysis

alphai AI DeskAI-generated

Added to alphai Aug 25, 2026, 9:24 PM UTC. Informational, not investment advice.

How this was made

alphai summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.

About alphai AI Desk Scoring methodology Report an issue

alphai market briefInsider activity

Primary signal

$AMPX

Neutral

high confidence

Mentioned

$AMPX

Relevance

5/10

alphai data visualization · based on SEC EDGAR

Decision brief

The 30-second read

$AMPXNeutralLow

Why it matters

The disclosed sale is modest and unlikely to affect market perception of AMPX.

Market read

Routine insider sale with limited trading relevance.

What to watch

Potential upcoming financing needs or personal liquidity needs for the director.

Relevance 5/10Novelty 4/10Timing: post-market filing

Background

SEC Form 4 filing discloses insider transactions; used by traders to gauge insider sentiment.

Company-level read

Ticker impact

AI estimates · verify against primary disclosures

$AMPXNeutralHigh confidence

Context

Director Sun Kang sold 62,101 shares for $642,186, reducing his stake to 1,218,397 shares.

Expected impact

No significant price impact expected.

Evidence & confidence

The sale size is small relative to float and market cap; typical for insiders.

Market effects

Sector

None significant; insider sale does not affect sector trends.

Regional

None.

Global

None.

Counterpoint

What could challenge this read

If insider selling signals concerns, a short position could be considered, but evidence is weak.

Key entities

Company
Amprius Technologies, Inc.
US-listed battery technology company (ticker AMPX).
Insider
Sun Kang
Director of Amprius Technologies.

Read at source ← All news

AUG 26

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Amprius technologies director Kang Sun sells $642,186 in stock

Amprius Technologies director Kang Sun sold 62,101 shares for $642,186 to cover tax obligations. The stock is down 4.2% this week. Amprius reported Q2 revenue of $34.02M, beating estimates, and raised its full-year revenue guidance to at least $140M. The company has $74.5M in cash and no debt.

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AUG 5

$AMPXMedAI 8/10

Why is Amprius Technologies stock surging today?

Amprius Technologies (AMPX) shares rose about 8.1% pre-open after the company reported Q2 2026 revenue of $34.0M, up 126% year over year, beating expectations. Amprius raised full-year 2026 revenue guidance to at least $140.0M, while targeting net loss under $10.0M and non-GAAP Adjusted EBITDA of at least $4.0M. GAAP EPS missed due to a warrant modification impact.

investing.com3 min

AUG 4

$AMPXHigh

Amprius Technologies, Inc. (AMPX): Results of Operations and Financial Condition

Amprius Technologies, Inc. (AMPX) filed an SEC Form 8-K — Results of Operations and Financial Condition. Exhibit 99.1 Amprius Technologies Reports Second Quarter 2026 Financial Results and Recent Business Highlights • Q2 2026 revenue more than doubled year-over-year to $34.0 million. • Net loss of $5.1 million, representing a 20% year-over-year improvement, including a $1.9 million

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MAY 26