Form 4 for AMPX Amprius Technologies, Inc.

Accepted 2026-03-24 00:00:00 ET · period of report 2026-03-23 · accession 0001476220-26-000013 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
MI	2026-03-24	2026-03-23	AMPX	Sun Kang	Dir	S - Sale	$18.80	-217.9K	121.5K	-64%	-$4.10M

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common stock	2026-03-23	S	D	65,046	$19.06	56,406	I See Footnote	—	—	(F4) The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $18.89 to $19.36, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. (F3) These securities are held directly by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees.
2	Common	Common stock	2026-03-23	S	D	152,823	$18.69	121,452	I See Footnote	—	—	(F2) The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $17.89 to $18.88, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. (F3) These securities are held directly by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees.