Food giant Mars will acquire a majority stake in German nutrition company foodspring.
Under the new legislation Fonterra will be allowed to refuse milk supply from farmers in certain circumstances.
NZ milk business confirms sale of popular ice cream brand.
Lion, Coca-Cola Amatil, Nufarm and Inghams all made the top 30.
Swales has occupied the role in an acting capacity since earlier this year.
Hurrell demonstrated impressive leadership and commercial skills in his six months as interim chief.
The dairy giant said complementary nutrition will be required to meet the increasing need for food globally.
The new ownership will commence on March 1, 2019.
A selection of dairy processors have agreed to address ACCC concerns that terms were unfair to farmers.