Stepien Thomas M
CIK 2067233 · Chief Executive Officer · last filed 2026-06-05
Stepien Thomas M is a Chief Executive Officer who has filed 7 SEC Form 4 insider transactions across 1 company since 2025. The most recent filing, for AMPX.WS, was dated Jun 5, 2026. Across all open-market trades the lifetime net is −$1.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.9M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$4.94M
1
7
-$1.01M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| AMPX.WS | Chief Executive Officer | 662,539 | $7.46 | $4.94M | -$1.01M | 7 | 2026-06-05 |
Recent Filings
7 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-05 | AMPX.WS | Mixed | −32,384 | -$41.9K | EDGAR |
| 2026-05-28 | AMPX.WS | Sell (S) | −4,375 | -$75.2K | EDGAR |
| 2026-05-26 | AMPX.WS | Sell (S) | −60,702 | -$897.7K | EDGAR |
| 2026-05-07 | AMPX.WS | Grant (A) | +200,000 | $0 | EDGAR |
| 2026-03-06 | AMPX.WS | Grant (A) | +150,000 | $0 | EDGAR |
| 2025-12-22 | AMPX.WS | Grant (A) | +200,000 | $0 | EDGAR |
| 2025-05-06 | AMPX.WS | Grant (A) | +400,000 | $0 | EDGAR |