Job Title & Company Information:

2015: First Second, Editorial Director

More Information:

2013: http://en.wikipedia.org/wiki/Mark_Siegel

2013: http://www.childrensillustrators.com/industry-insider/interviews/Mark-Siegel/id=19/

2012: http://www.tcj.com/mark-siegel-part-2/

2009: http://robot6.comicbookresources.