Mr Mark Callahan
- Born
- 7/1981
- Nationality
- British
- Appointments
- 0 (0 active)
- Control
- 4 holdings
Control
| Company | Nature of control | Notified | Ceased |
|---|---|---|---|
| Hyperplanes Ltd | Ownership Of Shares 75 To 100 Percent | 6 Apr 2016 | 3 Apr 2018 |
| Gravicus Technologies Limited | Significant Influence Or Control | 13 Dec 2016 | 20 Dec 2019 |
| Clearalpha Ltd | Ownership Of Shares 75 To 100 Percent Voting Rights 75 To 100 Percent Right To Appoint And Remove Directors |
25 Feb 2026 | |
| Hyperplanes Ltd | Ownership Of Shares 25 To 50 Percent Voting Rights 25 To 50 Percent |
6 Apr 2016 |