 Blue Apron Holdings Inc. shares slid 4.9 in premarket trade Monday, after the meal kit maker posted a wider-than-expected loss for the first quarter and revenue that fell short of consensus. The company had a loss of 38.4 million, or 1.19 a share, for the quarter, after a loss of 15.7 million, or 88 cents a share, in the year-earlier period. 