ABP has secured the stake through the purchase of Benoni Holding Corporation, which previously held an interest in the processor.
Products were distributed to retailers and distributors in Florida and Texas.
Tomazoni will become vice chairman and senior adviser after eight years leading the company.
The payment follows a second quarter in which revenue rose 5% to US$981 million, while orders reached US$1.03 billion.
The agreement comes as exporters face delays linked to inspections, veterinary approvals, cold-chain capacity and cargo handling.