| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 04/02/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Exercise | Restricted Stock Unit | 13.6k | $0.00 | $0 | | 04/02/2018 |
| 04/02/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Payment of Exercise | Common Stock | 4.7k | $0.00 | $0 | | 04/02/2018 |
| 02/21/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Grant | Option to Purchase Common Stock | 290k | $2.04 | $591.6k | | 02/21/2018 |
| 01/16/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Sale | Common Stock | 59.3k | $0.92 | $54.5k | | 01/08/2018 |
| 01/12/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Sale | Common Stock | 18.6k | $0.96 | $17.8k | | 01/08/2018 |
| 01/11/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Sale | Common Stock | 64k | $0.98 | $62.7k | | 01/08/2018 |
| 01/10/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Sale | Common Stock | 110.1k | $0.96 | $105.7k | | 01/08/2018 |
| 01/08/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Exercise | Restricted Stock Unit | 727.2k | $0.00 | $0 | | 01/08/2018 |
| 04/12/2017 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Sale | Common Stock | 10.2k | $2.00 | $20.4k | | 04/12/2017 |
| 04/02/2017 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Exercise | Restricted Stock Unit | 40.7k | $0.00 | $0 | | 04/02/2017 |
| 02/06/2017 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Grant | Option to Purchase Common Stock | 250k | $2.99 | $747.5k | | 02/06/2017 |
| 01/01/2017 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Grant | Option to Purchase Common Stock | 63.4k | $3.38 | $214.3k | | 01/01/2017 |