| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| AMPH | Director | Aug 14, 2020 | Buy | $20.26 | 1,000 | 20,260 | 13,151 | Aug 18, 2020, 04:15 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| AMPH | Director | Aug 14, 2020 | Buy | 20,260 |
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