Check out which companies are making headlines after the bell Monday:
Paychex - The payrolls and benefits outsourcing solutions provider posted earnings of 44 cents a share on sales of $608 million, edging past expectations for 43 cents a share on revenue of $606 million. Still, shares slipped in extended-hours trading.
Diamond Foods - The packaged food company posted a gain of 9 cents a share, excluding one-time items, on sales of $200 million, exceeding Wall Street estimates for a loss of 3 cents a share on revenue of $193 million. Meanwhile, the company said it expects to face significant sales and contribution headwinds in the current quarter. Still, shares ticked higher in extended-hours trading.