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Filing Detail
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001564590-22-007651
Filing Date
2022-02-28
Accepted
2022-02-28 16:44:56
Documents
120
Period of Report
2021-12-31

Document Format Files

Seq Description Document Type Size
1 10-K altr-10k_20211231.htm   iXBRL 10-K 5377257
2 EX-21.1 altr-ex211_9.htm EX-21.1 3825
3 EX-23.1 altr-ex231_10.htm EX-23.1 11604
4 EX-31.1 altr-ex311_6.htm EX-31.1 8667
5 EX-31.2 altr-ex312_7.htm EX-31.2 8667
6 EX-32.1 altr-ex321_8.htm EX-32.1 6568
7 GRAPHIC g1l2s0azr3ae000001.jpg GRAPHIC 34342
  Complete submission text file 0001564590-22-007651.txt   19836239

Data Files

Seq Description Document Type Size
8 XBRL TAXONOMY EXTENSION SCHEMA altr-20211231.xsd EX-101.SCH 96244
9 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE altr-20211231_cal.xml EX-101.CAL 122868
10 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE altr-20211231_def.xml EX-101.DEF 434160
11 XBRL TAXONOMY EXTENSION LABEL LINKBASE altr-20211231_lab.xml EX-101.LAB 813162
12 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE altr-20211231_pre.xml EX-101.PRE 688917
114 EXTRACTED XBRL INSTANCE DOCUMENT altr-10k_20211231_htm.xml XML 4342002
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)

IRS No.: 382591828 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-38263 | Film No.: 22690620
SIC: 7372 Services-Prepackaged Software
Office of Technology