# Dr Jason Bern Costello Cassells

## Details

- **Born:** 1/1971
- **Nationality:** Northern Irish
- **Appointments:** 0 (0 active)
- **Control:** 2 holdings



## Control

| Company | Nature of control | Notified | Ceased |
|---|---|---|---|
| [Octopus Energy Production Limited](/company/NI623717) | ownership-of-shares-75-to-100-percent, voting-rights-75-to-100-percent | 6 Apr 2016 | 26 Oct 2022 |
| [Costello's Hill Limited](/company/NI736348) | ownership-of-shares-25-to-50-percent, voting-rights-25-to-50-percent, right-to-appoint-and-remove-directors | 18 Dec 2025 |  |