Stefan Constantin Ionel
Chief Technology Officer
Stefan Constantin Ionel has filed 9 SEC Form 4 filings (21 transaction rows) across 1 company, with disclosures dating back to 2025. 9 of those filings fall inside the rolling window. Most recent filing: Aug 25, 2026.
Companies traded
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$10.7M
reported sales (SEC code S)
Companies
1
in the rolling window
| Source | |||||||
|---|---|---|---|---|---|---|---|
| AMPX | Chief Technology Officer | Sale | 29,681 | $307K | Aug 25 | SEC ↗ | |
| AMPX | Chief Technology Officer | Sale | 3,208 | $55K | May 28 | SEC ↗ | |
| AMPX | Chief Technology Officer | Sale | 28,812 | $426K | May 26 | SEC ↗ | |
| AMPX | Chief Technology Officer | Sale | 25,366 | $258K | Feb 24 | SEC ↗ | |
| AMPX | Chief Technology Officer | Sale | 39,690 | $476K | Jan 30 | SEC ↗ | |
| AMPX | Chief Technology Officer | Sale | 73,280 | $879K | Jan 23 | SEC ↗ | |
| AMPX | Chief Technology Officer | Sale | 492,827 | $5.9M | Jan 23 | SEC ↗ | |
| AMPX | Chief Technology Officer | Sale | 1,600 | $19K | Jan 23 | SEC ↗ | |
| AMPX | Chief Technology Officer | Sale | 198,255 | $2.1M | Dec 15 | SEC ↗ | |
| AMPX | Chief Technology Officer | Sale | 25,024 | $252K | Nov 25 | SEC ↗ |