| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 04/02/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Exercise | Restricted Stock Unit | 5k | $0.00 | $0 | | 04/02/2018 |
| 04/02/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Payment of Exercise | Common Stock | 1.7k | $0.00 | $0 | | 04/02/2018 |
| 02/21/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Grant | Option to Purchase Common Stock | 195k | $2.04 | $397.8k | | 02/21/2018 |
| 01/16/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Sale | Common Stock | 38.1k | $0.92 | $35k | | 01/08/2018 |
| 01/12/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Sale | Common Stock | 10.2k | $0.96 | $9.8k | | 01/08/2018 |
| 01/11/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Sale | Common Stock | 35.2k | $0.98 | $34.5k | | 01/08/2018 |
| 01/10/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Sale | Common Stock | 60.5k | $0.96 | $58.1k | | 01/08/2018 |
| 01/08/2018 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Exercise | Restricted Stock Unit | 406.4k | $0.00 | $0 | | 01/08/2018 |
| 04/12/2017 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Sale | Common Stock | 1.4k | $2.00 | $2.7k | | 04/12/2017 |
| 04/11/2017 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Sale | Common Stock | 200 | $2.00 | $400 | | 04/07/2017 |
| 04/10/2017 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Sale | Common Stock | 400 | $2.00 | $800 | | 04/07/2017 |
| 04/07/2017 | MABVAX THERAPEUTICS HOLDINGS, INC. | MBVX | Sale | Common Stock | 450 | $2.01 | $902.2 | | 04/07/2017 |