Attached files

file filename
10-K - 10-K - Altair Engineering Inc.altr-10k_20201231.htm
EX-32.1 - EX-32.1 - Altair Engineering Inc.altr-ex321_8.htm
EX-31.2 - EX-31.2 - Altair Engineering Inc.altr-ex312_6.htm
EX-31.1 - EX-31.1 - Altair Engineering Inc.altr-ex311_7.htm
EX-23.1 - EX-23.1 - Altair Engineering Inc.altr-ex231_10.htm

Exhibit 21.1

LIST OF SUBSIDIARIES

Subsidiary

Jurisdiction of Organization

Altair Product Design, Inc.

Michigan, United States

Altair Engineering India Pvt. Ltd.

India

Altair Engineering Ltd.

Japan

Datawatch Corporation

Delaware, United States