UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38263 ALTAIR ENGINEERING INC. (Exact name of registrant as specified in its charter) Delaware 38-2591828 (State or other jurisdiction of i ...

Altair Engineering, Inc. (NASDAQ:ALTR) Q4 2018 Results Earnings Conference Call February 28, 2019 4:30 PM ET Company Participants Howard Morof - Chief Financial Officer James Scapa - Chairman and Chief Executive Officer Conference Call Participants Sterling Auty - JPMorgan Richard Valera - Needham & Co Matthew Swanson - RBC Capital Markets Joshua Tilton - Berenberg Operator Good day, ladies and gentlemen, and welcome to Altair Fourth Quarter 2018 Earnings Conference Call. At this time all participants are i ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-38263 | --- | --- | --- | |---------------------------------------------------------------------------------------|---------------------------------- ...