AMPXAmprius Technologies, Inc.
Insider trading & SEC Form 4 activity — last 90 days. Latest filing: 2026-06-05.
Insider buys (90d)
$0.00
Insider sells (90d)
$2.83M
Net flow
$-2.83M
Filings
10
Buy transactions
0
Sell transactions
8
Distinct insiders
4
Last close (cached)
$18.83
as of 2026-06-08
1d return
-4.4%
5d return
-13.4%
1m return
+16.9%
Top insiders trading AMPX (90d)
Recent transactions (13)
| Filed | Txn date | Insider | Code | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-06-05 | 2026-06-04 | Stepien Thomas M OfficerDirector | Sale | 2,000 | $20.97 | $41.9K | open → |
| 2026-06-05 | 2026-06-04 | Stepien Thomas M OfficerDirector | Gift | 36,914 | $0.00 | $0.00 | open → |
| 2026-06-05 | 2026-06-04 | Stepien Thomas M OfficerDirector | Gift | 36,914 | $0.00 | $0.00 | open → |
| 2026-06-05 | 2026-06-04 | Stepien Thomas M OfficerDirector | Gift | 30,384 | $0.00 | $0.00 | open → |
| 2026-05-28 | 2026-05-27 | Sun Kang Director | Sale | 356 | $17.19 | $6.1K | open → |
| 2026-05-28 | 2026-05-27 | Stepien Thomas M OfficerDirector | Sale | 4,375 | $17.19 | $75.2K | open → |
| 2026-05-28 | 2026-05-27 | Stefan Constantin Ionel Officer | Sale | 3,208 | $17.19 | $55.2K | open → |
| 2026-05-28 | 2026-05-26 | DIXON DONALD R Director | Sale | 17,895 | $17.90 | $320.3K | open → |
| 2026-05-26 | 2026-05-21 | Sun Kang Director | Sale | 67,796 | $14.79 | $1.00M | open → |
| 2026-05-26 | 2026-05-21 | Stefan Constantin Ionel Officer | Sale | 28,812 | $14.79 | $426.1K | open → |
| 2026-05-26 | 2026-05-21 | Stepien Thomas M OfficerDirector | Sale | 60,702 | $14.79 | $897.7K | open → |
| 2026-05-07 | 2025-12-19 | Stepien Thomas M OfficerDirector | Grant | 200,000 | $0.00 | $0.00 | open → |
| 2026-05-07 | 2026-05-05 | Sun Kang Director | Grant | 6,250 | $0.00 | $0.00 | open → |
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