After hours
Award
Calculated transaction value
$0

Stepien Thomas M Chief Executive Officer

Transaction date Aug 25, 2026
Public filing date Aug 25, 2026
Filing lag Filed same day

AMPX daily price context

Close on/before transaction
$10.18 Aug 25, 2026
Close before public filing
$9.86 Aug 24, 2026
Return since public filing
-7.61% Through Sep 16, 2026

Source details

Reported owner
Not disclosed
Source asset code
Security
Security
Common stock
Quantity / price
346 shares @ $0
SEC ownership
Indirect
Transaction code
A
Form
4
Filing identifier
0002067233-26-000019