Company | Symbol | Price | Amount | Relationship | Remaining Holdings | Date | Form 4 |
| AMBR | $8.80 | 2,000 | Director | 10,000 | 2018-11-14 | Filing |
| AMBR | $4.16 | 3,500 | Director | 8,000 | 2016-02-18 | Filing |
| AMBR | $3.94 | 1,000 | Director | 4,500 | 2015-11-11 | Filing |
| AMBR | $9.00 | 3,500 | Director | 3,500 | 2015-03-09 | Filing |