AMPX CLUSTER SEC Filing Analysis

Latest settled — T+20d

AMPX ▼ -5.85% at T+20d

SHORT call ✓ call won +5.85% · α vs SPY +7.83% · entry $18.29 → $17.22

Next anchor: T+60d in 15d

Currently $14.62 · +20.07% from $18.29 entry (call sign-flipped)

Entry anchored
Mar 11, 06:55 PM ET
via Databento tick

T+1d

-1.86%

call +1.86% · α +1.26%

$17.95

settled 2mo ago

T+5d

+4.48%

call -4.48% · α -5.46%

$19.11

settled 2mo ago

T+20d

-5.85%

call +5.85% · α +7.83%

$17.22

settled 6w ago

T+60d

—

call — · α —

—

in 15d

Price Chart

Loading 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

Direction

selling

Total Value

$10.1M

Insiders

2

Actionable Insight

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.

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.

dilutioninsider ownershipmarket sentiment

Risk Factors

Perception of insider pessimism following share price appreciation.
Potential for increased selling pressure if other insiders follow suit.

Market Snapshot

Exchange

NYSE

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

3 reports for AMPX

T+1T+5T+20T+60

Track record builds as more directional reports settle.

Filters

Reports for AMPX — sortable, filterable
	Type				Now
Mar 12, 2026 10w ago	Insider Cluster BEARISH ★ 7/10	$18.29 $17.22	▲ +5.85%	▲ +7.83%	$14.62 (+20.07%)
Mar 4, 2026 11w ago	8-K BULLISH ★ 8/10	$14.89 $16.00	▲ +7.45%	▲ +11.24%	$14.62 (−1.81%)
Feb 23, 2026 12w ago	Insider Cluster BEARISH ★ 6/10	$10.20 $18.68	▼ −83.14%	▼ −87.08%	$14.62 (−43.33%)

US Market Status

Market Open — Closes in 4h 38m

Get Real-Time SEC Filing Intelligence

Comprehensive SEC filing analysis delivered the moment filings hit EDGAR. Sentiment scoring, impact analysis, and actionable insights for every material event.

Try SecBot Free Coming soon: SecBot Pro with alerts, watchlists, and API access