EXHIBIT 10.6 1999 NONQUALIFIED STOCK OPTION AGREEMENT (NON-PLAN OPTION) THIS AGREEMENT is made as of the 30th day of April, 1999 (the "Grant Date") between ENGINEERING ANIMATION, INC., a Delaware corporation (the "Company"), and Robert Nierman (the...1999 Nonqualified Stock Option Agreement • April 14th, 2000 • Engineering Animation Inc • Services-prepackaged software
