Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000950170-25-024197
Filing Date
2025-02-20
Accepted
2025-02-20 16:25:25
Documents
115
Period of Report
2024-12-31

Document Format Files

Seq Description Document Type Size
1 10-K altr-20241231.htm   iXBRL 10-K 5153874
2 EX-19.1 altr-ex19_1.htm EX-19.1 125234
3 EX-21.1 altr-ex21_1.htm EX-21.1 32827
4 EX-23.1 altr-ex23_1.htm EX-23.1 15324
5 EX-31.1 altr-ex31_1.htm EX-31.1 12263
6 EX-31.2 altr-ex31_2.htm EX-31.2 12260
7 EX-32.1 altr-ex32_1.htm EX-32.1 10047
8 GRAPHIC img207624867_0.jpg GRAPHIC 109921
  Complete submission text file 0000950170-25-024197.txt   19552773

Data Files

Seq Description Document Type Size
9 XBRL TAXONOMY EXTENSION SCHEMA WITH EMBEDDED LINKBASES DOCUMENT altr-20241231.xsd EX-101.SCH 2137390
118 EXTRACTED XBRL INSTANCE DOCUMENT altr-20241231_htm.xml XML 4036101
Mailing Address 1820 E. BIG BEAVER ROAD TROY MI 48083
Business Address 1820 E. BIG BEAVER ROAD TROY MI 48083 248-614-2400
Altair Engineering Inc. (Filer) CIK: 0001701732 (see all company filings)

EIN.: 382591828 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-38263 | Film No.: 25645827
SIC: 7372 Services-Prepackaged Software
(CF Office: 06 Technology)