Stefan Constantin Ionel's Form 4 filing
Amprius Technologies, Inc. (AMPX) · filed Jan 30, 2026
- Accession no.
- 0001940928-26-000004
- Filed
- Jan 30, 2026, 6:02 PM ET
- Trade date
- Jan 28, 2026
- Filing delay
- 2 days
- Rule 10b5-1 plan
- Not checked
This filing lists 3 non-derivative transactions and 2 derivative transactions. Open-market sales total $476.4K. It was filed 2 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Stefan Constantin IonelCIK 0001940928 | Officer (Chief Technology Officer) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Jan 28, 2026 | Common stock | MOption exerciseAcquired | +90 | $0.62 | +$55.8 | 748,786 | Direct | |
| Jan 28, 2026 | Common stock | MOption exerciseAcquired | +39,600 | $0.05 | +$1,980 | 788,386 | Direct | |
| Jan 28, 2026 | Common stock | SSaleDisposed | −39,690 | $12.00F3 | −$476,351.44 | 748,696 | Direct |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Jan 28, 2026 | Common stock | MOption exerciseDisposed | −90 | $0.00 | $0 | 0 | Direct | |
| Jan 28, 2026 | Common stock | MOption exerciseDisposed | −39,600 | $0.00 | $0 | 0 | Direct |
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
- F3
The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $12.00 to $12.02, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
Referenced by the price of 1 transaction in Table I.