| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| ALPN | Senior VP and CFO | Dec 31, 2020 | Option Exercise | $12.60 | 2,258 | 28,451 | 24,027 | Jan 04, 2021, 08:31 PM |
| ALPN | Senior VP and CFO | Jun 30, 2020 | Option Exercise | $9.71 | 2,258 | 21,925 | 26,285 | Jul 01, 2020, 07:38 PM |
| ALPN | Senior VP and CFO | May 30, 2019 | Buy | $4.95 | 10,000 | 49,500 | 10,000 | Jun 03, 2019, 08:00 AM |
| Symbol | Relationship | Date | Transaction | Value($) |
| ALPN | Senior VP and CFO | Dec 31, 2020 | Option Exercise | 28,451 |
| ALPN | Senior VP and CFO | Jun 30, 2020 | Option Exercise | 21,925 |
| ALPN | Senior VP and CFO | May 30, 2019 | Buy | 49,500 |