| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
President of Amprius Lab
1 company
Jonathan Bornstein last filed a Form 4 in March 2025, as President of Amprius Lab at AMPX. From September 2023 to March 2025, the filings on record show 0 open-market purchases and 13 sales. Jonathan Bornstein's net worth is not public. Form 4 filings only show shares in the companies where this person was an insider, as of the last filing.
Our model assigns Jonathan Bornstein a strong insider score of 71/100, based on 23 past trades. Over a 12-month horizon, 69.6% of those trades were profitable, with an average 12-month return of +11.2%.
At the last filing, the largest reported position was 422,668 shares of AMPX. The AMPX filings lean toward selling, a net 1,394,762 shares.
Shares as reported in the last Form 4 for each company; the most recent is from March 2025. Values use today's prices. Any trades after the last filing were not reported, so current holdings may differ.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Nov 9, 2023 | AMPX Amprius Technologies, Inc. | President of Amprius Lab | Sale+OE10b5-1 | 122,369 | $3.00 | $366,737.34 | - | +61.5% | -36.6% | |
| Oct 12, 2023 | AMPX Amprius Technologies, Inc. | President of Amprius Lab | Sale+OE10b5-1 | 150,000 | $4.22 | $632,392.82 | - | +17.4% | -63.9% | |
| Sep 20, 2023 | AMPX Amprius Technologies, Inc. | President of Amprius Lab | Sale+OE10b5-1 | 150,000 | $4.36 | $654,561.12 | - | -14.7% | -79.7% |