Mattel up after smaller-than-expected quarterly loss

** Barbie maker Mattel's MAT shares rise 4% to $19.50 in extended trading

** Reports a smaller-than-expected loss of for Q1

** MAT posts adj loss of 5 cents/shr, vs estimates of 12 cents/shr - LSEG data

** Company's Q1 sales of $809.5 mln misses estimates of $831.8 mln

** Reaffirms its full-year sales and profit forecasts

** Shares have fallen 0.66%, as of last close