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AMPX — structural market context

Amprius Technologies, Inc.

Structural market context from public regulatory and market data, shown with its as-of dates. Descriptive only: nothing on this page is a recommendation, a prediction, or advice to buy or sell any security.

AMPX short interest & days to cover

SHARES SHORT

23.9M

% OF FLOAT

—

DAYS TO COVER

4.2

CHANGE VS PRIOR

-14.7%

FINRA consolidated short interest, reported twice a month and published ~2 weeks after each settlement date. % of float uses reported free float. · as of 2026-07-31 (26d ago)

AMPX fails-to-deliver (FTD)

Settlement date	Failed shares	Price
2026-07-27 · 30d	31K	$9.24
2026-07-24 · 33d	2K	$9.91
2026-07-17 · 40d	591	$10.1

SEC fails-to-deliver files, published twice a month with ~6 weeks of delay.

AMPX insider buying and selling (Form 4)

Last 12 months, open-market only: 0 purchases · 4 sales

Insider	Type	Shares	Value	Filed
Sun Kang · director	Sell (S)	62K	$642K	2026-08-25
Stefan Constantin Ionel · officer: Chief Technology Officer	Sell (S)	30K	$307K	2026-08-25
Stepien Thomas M · director, officer: Chief Executive Officer	Sell (S)	24K	$243K	2026-08-25
Stepien Thomas M · director, officer: Chief Executive Officer	Sell (S)	8K	$80K	2026-08-25

SEC Form 4 filings, open-market purchases and sales only (codes P and S); grants and option exercises excluded. Attributed public records.

Frequently asked questions

Are insiders buying AMPX?

In the last 12 months of SEC Form 4 filings, AMPX recorded 0 open-market insider purchases and 4 open-market sales (codes P and S; grants and option exercises excluded). These are attributed public records — information, not instruction.

Is this page telling me to buy or sell AMPX?

No. Everything on this page is descriptive, structural market context from public data, shown with its as-of dates. TradeAI News does not issue directional recommendations, price predictions, or buy/sell advice — for any ticker.

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Not financial advice. Trading involves risk. Descriptive structural context, never a recommendation.