CIK 0001899287 · Non-accelerated filer<br>Smaller reporting company<br>Emerging growth company
Amprius Technologies, Inc.
Sign in to watch- Ticker
- AMPX
- Exchange
- NYSE
- Industry
- Miscellaneous Electrical Machinery, Equipment & Supplies
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 981591811
- Phone
- (800) 425-8803
- Business address
- 1180 PAGE AVENUE, FREMONT, CA, 94538
- Former names
- Kensington Capital Acquisition Corp. IV
Securities
- AMPX Amprius Technologies, Inc. Common Stock NYSE
- AMPX-WT Warrants NYSE
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $1,272,671
- in 3 filings
Net −$1,272,671. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-01-16 | Sun Kang Director | Option exercise | +850,338 | $2.50 | $2.1M | 2,253,989 |
| 2026-01-16 | Sun Kang Director | Option exercise | +100,210 | $1.78 | $178K | 2,354,199 |
| 2026-01-16 | Sun Kang Director | Sale | −950,548 | $11.07 | $10.5M | 1,403,651 |
| 2026-01-16 | Sun Kang Director | Option exercise · Stock Option (right to buy) | −850,338 | 0 | ||
| 2026-01-16 | Sun Kang Director | Option exercise · Stock Option (right to buy) | −100,210 | 1,355,690 | ||
| 2026-01-12 | Sun Kang Director | Option exercise | +180,802 | $0.62 | $112K | 1,584,453 |
| 2026-01-12 | Sun Kang Director | Option exercise | +208,264 | $2.44 | $508K | 1,792,717 |
| 2026-01-12 | Sun Kang Director | Option exercise | +117,201 | $2.50 | $293K | 1,909,918 |
| 2026-01-12 | Sun Kang Director | Sale | −506,267 | $10.10 | $5.1M | 1,403,651 |
| 2026-01-12 | Sun Kang Director | Option exercise · Stock Option (right to buy) | −180,802 | 0 | ||
| 2026-01-12 | Sun Kang Director | Option exercise · Stock Option (right to buy) | −208,264 | 0 | ||
| 2026-01-12 | Sun Kang Director | Option exercise · Stock Option (right to buy) | −117,201 | 850,338 | ||
| 2025-12-19 | Stepien Thomas M Chief Executive Officer | Grant or award | +200,000 | 760,000 | ||
| 2025-12-19 | Stepien Thomas M President | Grant or award | +200,000 | 610,000 | ||
| 2025-12-11 | Stefan Constantin Ionel Chief Technology Officer | Option exercise | +125,000 | $0.05 | $6K | 946,951 |
| 2025-12-11 | Stefan Constantin Ionel Chief Technology Officer | Sale | −198,255 | $10.51 | $2.1M | 748,696 |
| 2025-12-11 | Stefan Constantin Ionel Chief Technology Officer | Option exercise · Stock Option (right to buy) | −125,000 | 310,962 | ||
| 2025-11-21 | Stefan Constantin Ionel Chief Technology Officer | Sale | −25,024 | $10.08 | $252K | 821,951 |
| 2025-11-21 | Sun Kang Chief Executive Officer | Sale | −68,655 | $10.08 | $692K | 1,403,651 |
| 2025-11-17 | Sun Kang Chief Executive Officer | Option exercise | +202,934 | $0.98 | $199K | 1,675,240 |
Page 5 of 16 · 317 trades