Form4insider filings, from the source

Insider · CIK 0001476220

Kang Sun

Files at: AMPX. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted

Reported trades — common stock

No reported common-stock activity in this period.

Reported trades — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.