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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. CIK#: 0001701732 (see all company filings)

SIC: 7372 - SERVICES-PREPACKAGED SOFTWARE
State location: MI | State of Inc.: DE | Fiscal Year End: 1231
(CF Office: 06 Technology)
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Items 1 - 40  0001701732 Filings RSS Feed
Filings Format Description Filing Date File/Film Number
ARS  Documents Annual Report to Security Holders
Acc-no: 0001193125-24-087909 (34 Act)  Size: 799 KB
2024-04-05 001-38263
24824743
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001193125-24-087907 (34 Act)  Size: 194 KB
2024-04-05 001-38263
24824739
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001193125-24-087903 (34 Act)  Size: 1 MB
2024-04-05 001-38263
24824731
S-8  Documents Securities to be offered to employees in employee benefit plans
Acc-no: 0001193125-24-042944 (33 Act)  Size: 72 KB
2024-02-22 333-277284
24666052
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0000950170-24-018804 (34 Act)  Size: 16 MB
2024-02-22 001-38263
24665159
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-24-018798 (34 Act)  Size: 1 MB
2024-02-22 001-38263
24665036
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001104659-24-020237 (34 Act)  Size: 13 KB
2024-02-13 005-90370
24627332
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0000902664-24-001473 (34 Act)  Size: 63 KB
2024-02-13 005-90370
24626084
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001193125-24-033659 (34 Act)  Size: 87 KB
2024-02-13 005-90370
24625406
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001193125-24-033655 (34 Act)  Size: 86 KB
2024-02-13 005-90370
24625381
SC 13G  Documents Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001361570-24-000002 (34 Act)  Size: 10 KB
2024-01-31 005-90370
24580747
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001086364-24-003770 (34 Act)  Size: 13 KB
2024-01-25 005-90370
24562986
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000950170-23-058280 (34 Act)  Size: 13 MB
2023-11-02 001-38263
231372900
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-23-058241 (34 Act)  Size: 1 MB
2023-11-02 001-38263
231372584
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-23-008903 Size: 39 KB
2023-08-15
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000950170-23-038087 (34 Act)  Size: 13 MB
2023-08-03 001-38263
231140654
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-23-038059 (34 Act)  Size: 1 MB
2023-08-03 001-38263
231140450
CORRESP  Documents [Cover]Correspondence
Acc-no: 0001193125-23-201719 Size: 9 KB
2023-08-02
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-23-007854 Size: 42 KB
2023-07-24
CORRESP  Documents [Cover]Correspondence
Acc-no: 0001193125-23-185004 Size: 33 KB
2023-07-11
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-23-006296 Size: 44 KB
2023-06-12
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001104659-23-069833 (34 Act)  Size: 13 KB
2023-06-09 005-90370
231004816
8-K  Documents   Interactive Data Current report, item 5.07
Acc-no: 0001193125-23-163497 (34 Act)  Size: 149 KB
2023-06-08 001-38263
231001925
8-K  Documents   Interactive Data Current report, item 8.01
Acc-no: 0001193125-23-157837 (34 Act)  Size: 140 KB
2023-05-31 001-38263
23981118
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000950170-23-017901 (34 Act)  Size: 10 MB
2023-05-04 001-38263
23889105
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-23-017867 (34 Act)  Size: 1 MB
2023-05-04 001-38263
23888848
ARS  Documents Annual Report to Security Holders
Acc-no: 0001193125-23-114220 (34 Act)  Size: 814 KB
2023-04-25 001-38263
23841833
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001193125-23-114209 (34 Act)  Size: 109 KB
2023-04-25 001-38263
23841820
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001193125-23-114192 (34 Act)  Size: 1 MB
2023-04-25 001-38263
23841803
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0000950170-23-004281 (34 Act)  Size: 24 MB
2023-02-24 001-38263
23663546
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-23-004117 (34 Act)  Size: 1 MB
2023-02-23 001-38263
23659820
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0000902664-23-001556 (34 Act)  Size: 61 KB
2023-02-13 005-90370
23618309
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001104659-23-015261 (34 Act)  Size: 13 KB
2023-02-09 005-90370
23602405
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001193125-23-024976 (34 Act)  Size: 93 KB
2023-02-06 005-90370
23588820
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001193125-23-024974 (34 Act)  Size: 88 KB
2023-02-06 005-90370
23588808
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001306550-23-005092 (34 Act)  Size: 13 KB
2023-01-31 005-90370
23571741
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0001193125-23-001185 (34 Act)  Size: 217 KB
2023-01-04 001-38263
23504328
8-K  Documents   Interactive Data Current report, item 2.03
Acc-no: 0001193125-22-282567 (34 Act)  Size: 142 KB
2022-11-10 001-38263
221376979
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0000950170-22-022092 (34 Act)  Size: 15 MB
2022-11-04 001-38263
221360657
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0000950170-22-021901 (34 Act)  Size: 1 MB
2022-11-03 001-38263
221358377