Medline Inc. filed publicly for a US initial public offering, setting the stage for what would be among the biggest-ever private equity backed listings.

The medical supplies maker and distributor had net income of $655 million on revenue of $13.5 billion for the six months ending June 28, compared with net income of $587 million on revenue of $12.3 billion a year earlier, according to its filing Tuesday with the US Securities and Exchange Commission.