| Date | Issuer | Type | Security | Price | Units | Value | |
|---|---|---|---|---|---|---|---|
| Mammoth Energy Services Inc. Chief Business Officer | J | Common Stock | |||||
| Mammoth Energy Services Inc. Chief Business Officer | P | Common Stock | |||||
| Nephros Inc. | J | Common Stock | |||||
| Mammoth Energy Services Inc. | J | Common Stock | |||||
| Mammoth Energy Services Inc. | P | Common Stock |