Spencer Jay Hempleman is listed as Limited Partner at Ardsley Advisory Partners LP on SEC Form ADV.
Form ADV reports a beneficial ownership band of 10-25%.
| Title | Limited Partner |
| Ownership | 10-25% |
| Control person | Yes |
| Since | 2006 |
| Title | Managing Member |
| Ownership | 50-75% |
| Control person | Yes |
| Since | 2018 |