1、UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWASHINGTON,D.C.20549FORM 10-K(Mark One)xANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year ended December 31,2017ORoTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 19
2、34Commission File Number 0-20853ANSYS,Inc.(Exact name of registrant as specified in its charter)Delaware 04-3219960(State or other jurisdiction of incorporation or organization)(I.R.S.Employer Identification No.)2600 ANSYS Drive,Canonsburg,PA 15317(Address of principal executive offices)(Zip Code)84
3、4-462-6797(Registrants telephone number,including area code)Securities registered pursuant to Section 12(b)of the Act:Common Stock,$0.01 par value per share The NASDAQ Stock Market,LLC(Title of each class)(Name of exchange on which registered)Securities registered pursuant to Section 12(g)of the Act
4、:None(Title of class)Indicate by check mark if the registrant is a well-known seasoned issuer,as defined in Rule 405 of the Securities Act.Yes x No Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d)of the Act.Yes No xIndicate by check mark whethe
5、r the registrant(1)has filed all reports required to be filed by Section 13 or 15(d)of the Securities Exchange Act of 1934 during the preceding 12months(or for such shorter period that the registrant was required to file such reports),and(2)has been subject to such filing requirements for the past 9
6、0 days.Yes x No Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website,if any,every Interactive Data File required to be submitted andposted pursuant to Rule 405 of Regulation S-T(232.405 of this chapter)during the preceding 12 months(or for su