The Isle of Man Companies Act 1974 can be found here.
There’s a bit more meat in this one.
It deals with:
S1. Holding and subsidiary companies.
S2. Membership of holding company.
S4. Requires Public Companies to maintain a register of substantial shareholders and requires those shareholders to make certain notifications to the Company – say – for example, their interest increases above a certain level (eg 3%)
S10 and 10a Deal with the keeping of registers in both paper and computerised form.