| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AMPX | Common stock | Sale | -$153K | -40K | -1.71% | $3.81 | 2.3M | 12 Dec 2023 | See footnote | F1, F2 |
| transaction | AMPX | Common stock | Sale | -$76.2K | -20K | -1.04% | $3.81 | 1.9M | 12 Dec 2023 | See footnote | F3, F4 |
| transaction | AMPX | Common stock | Sale | -$221K | -60K | -2.61% | $3.68 | 2.24M | 13 Dec 2023 | See footnote | F2, F5 |
| transaction | AMPX | Common stock | Sale | -$110K | -30K | -1.58% | $3.68 | 1.87M | 13 Dec 2023 | See footnote | F4, F5 |
| transaction | AMPX | Common stock | Sale | -$605K | -170K | -7.6% | $3.56 | 2.07M | 14 Dec 2023 | See footnote | F2, F6 |
| transaction | AMPX | Common stock | Sale | -$302K | -85K | -4.55% | $3.56 | 1.79M | 14 Dec 2023 | See footnote | F4, F6 |
| holding | AMPX | Common stock | 17.9K | 12 Dec 2023 | Direct | F7 |
| Id | Content |
|---|---|
| F1 | The price reported in Column 4 is a cumulative average price. These shares were sold in multiple transactions at prices ranging from $3.70 to $3.95, 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. |
| F2 | The securities are owned by Kensington Capital Partners, LLC, of which the reporting person is the managing member. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein. |
| F3 | The price reported in Column 4 is a cumulative average price. These shares were sold in multiple transactions at prices ranging from $3.705 to $3.95, 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. |
| F4 | The shares are owned by Elizabeth Mirro as trustee of the Kensington Capital Trust dated 6/27/20. Elizabeth Mirro is the reporting person's spouse. The reporting person disclaims beneficial ownership of these securities. |
| F5 | The price reported in Column 4 is a cumulative average price. These shares were sold in multiple transactions at prices ranging from $3.51 to $3.89, 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. |
| F6 | The price reported in Column 4 is a cumulative average price. These shares were sold in multiple transactions at prices ranging from $3.53 to $3.70, 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. |
| F7 | Includes 17,895 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. |