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Filing Detail
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001564590-21-009427
Filing Date
2021-02-26
Accepted
2021-02-26 16:12:14
Documents
122
Period of Report
2020-12-31

Document Format Files

Seq Description Document Type Size
1 10-K altr-10k_20201231.htm   iXBRL 10-K 5595145
2 EX-21.1 altr-ex211_9.htm EX-21.1 3819
3 EX-23.1 altr-ex231_10.htm EX-23.1 10763
4 EX-31.1 altr-ex311_7.htm EX-31.1 8667
5 EX-31.2 altr-ex312_6.htm EX-31.2 8688
6 EX-32.1 altr-ex321_8.htm EX-32.1 6587
7 GRAPHIC guzr20sajrn2000001.jpg GRAPHIC 226047
  Complete submission text file 0001564590-21-009427.txt   20480907

Data Files

Seq Description Document Type Size
8 XBRL TAXONOMY EXTENSION SCHEMA altr-20201231.xsd EX-101.SCH 100459
9 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE altr-20201231_cal.xml EX-101.CAL 124241
10 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE altr-20201231_def.xml EX-101.DEF 448653
11 XBRL TAXONOMY EXTENSION LABEL LINKBASE altr-20201231_lab.xml EX-101.LAB 815683
12 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE altr-20201231_pre.xml EX-101.PRE 712531
13 EXTRACTED XBRL INSTANCE DOCUMENT altr-10k_20201231_htm.xml XML 4331731
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.: 21688876
SIC: 7372 Services-Prepackaged Software
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