The National Credit Union Administration issued a prohibition order against a former employee of Members Exchange Credit Union in Mississippi.
The Mississippi company said Duane Dewey, the president of its bank, will succeed Gerard Host as CEO in January.
The company will pay an undisclosed amount of cash for Marshall Financial, the parent of Citizens Bank.
The Mississippi company said it decided to take aggressive measures to reduce its exposure to energy firms.
The Mississippi company will pay $49 million for Traders & Farmers Bancshares.
The Mississippi company will also top $4 billion in assets when it buys Southwest Georgia Financial.
The Mississippi company will pay more than $38 million for Texas First Bancshares.