United Natural Foods, Inc. reported Q3 results with a 4.2% revenue decline and missed estimates, sending shares down over 14%. UNFI's margins remain razor-thin, with a 2.4% adjusted EBITDA margin and just $33M in GAAP profit, raising concerns about operational leverage. The company's heavy debt load ($1.66B LT debt) and shrinking free cash flow ($54M, down 54% y/y) amplify financial risk.