Being from Canada i would some details on what you guys call Q4... up here it does end in april but i found this on wiki for the states:
1st quarter: 1 October 2013 – 31 December 2013
2nd quarter: 1 January 2014 – 31 March 2014
3rd quarter: 1 April 2014 – 30 June 2014
4th quarter: 1 July 2014 – 30 September 2014
just wanna make shure