The Contracting Authority may, after giving the Contractor seven days' notice, terminate the contract in any of the following cases:
...
- any organisational modification occurs involving a change in the legal personality, nature or control of the Contractor, unless such modification is recorded in an addendum to the contract;

change in the legal personality, nature or control of the Contractor - пожалуйста, помогите перевести!
Большое спасибо!

change of control - в договорах, к сожалению, так и пишут - изменение контроля (юристы поймут)