Protein2o names Mark Rappaport as CEO

CHICAGO — Protein2o, a manufacturer of fruit-flavored, clear protein water formulated with whey protein isolate, has named Mark Rappaport as chief executive officer. Rappaport succeeds Chris Pruneda.

Rappaport brings more than two decades of experience in the beverage and consumer brands space, the company said.

Most recently, he was global chief commercial officer at Congo Brands and previously was in leadership positions at Red Bull.

In addition to a new leader, Protein2o has received a growth investment.

Mark Rappaport, chief executive officer of Protein 2o

| Photo: Mark Rappaport

The investment, which was not disclosed, will be used to support the company’s next phase of growth for brand building, retail development, organizational capabilities and new innovations.

“Mark brings a rare combination of brand building and operating experience, along with an instinctive understanding of where consumers are going next,” said Chris Running, chairman of the board of Protein2o. “He has a proven track record of building brands, developing high-performing teams and delivering exceptional results.

“Just as importantly, Mark is known throughout the industry as a leader of great character who builds strong, lasting relationships with customers, partners and people. We believe he is uniquely suited to lead Protein2o through this next chapter and realize the enormous opportunity ahead.”

Pruneda became the company’s CEO in April 2025. Previously, he was CEO and co-founder of Matador Energy and earlier was chief commercial officer at Koia.