| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| ALPN | 10% Owner | Sep 17, 2021 | Sale | $9.40 | 400,000 | 3,760,000 | 2,600,980 | Sep 21, 2021, 05:18 PM |
| ALPN | 10% Owner | Jan 18, 2019 | Buy | $5.37 | 190,875 | 1,024,999 | 3,994,781 | Jan 22, 2019, 08:46 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| ALPN | 10% Owner | Sep 17, 2021 | Sale | 3,760,000 |
| ALPN | 10% Owner | Jan 18, 2019 | Buy | 1,024,999 |