Need Help? Talk to an Expert +1 (408) 836-7136

ALTR   Altair Engineering Inc.   |  1701732

Available Fillings Total Fillings:1285
Form Type Form Count
8-K 75
UPLOAD 10
10-Q 21
S-8 8
CORRESP 11
8-A12B 1
3/A 2
SC 13D 1
SC 13G 14
8-K/A 1
SC TO-T/A 4
DRS 2
DRSLTR 2
4/A 13
ARS 2
10-K 8
SC TO-C 4
S-1/A 3
15-12G 1
DEFA14A 19
144 52
SC 13G/A 43
424B4 2
DRS/A 2
424B5 2
FWP 1
POSASR 1
25-NSE 1
DEFM14A 1
4 908
DFAN14A 2
DEF 14A 7
S-3ASR 2
3 39
EFFECT 2
S-1 2
SCHEDULE 13G/A 4
10-K/A 1
SC TO-T 1
CERTNAS 1
D 1
S-8 POS 8
Financials Total:106
Form Type Act Filing Date Report Date Action
8-K 34 03/28/2025 03/26/2025 |    |  
10-K/A 34 03/25/2025 12/31/2024
10-K 34 02/20/2025 12/31/2024 |    |  
8-K 34 02/20/2025 02/20/2025 |    |  
8-K 34 01/22/2025 01/22/2025 |    |  
8-K 34 01/16/2025 01/16/2025 |    |  
10-Q 34 10/31/2024 09/30/2024 |    |  
8-K 34 10/30/2024 10/30/2024 |    |  
8-K 34 10/30/2024 10/30/2024 |    |  
10-Q 34 08/01/2024 06/30/2024 |    |  
Ipos Total:23
Form Type Act Filing Date Report Date Action
UPLOAD 08/15/2023 05/09/2025
CORRESP 08/02/2023 05/09/2025
UPLOAD 07/24/2023 05/09/2025
CORRESP 07/11/2023 05/09/2025
UPLOAD 06/12/2023 05/09/2025
UPLOAD 07/01/2022 05/09/2025
CORRESP 06/30/2022 05/09/2025
UPLOAD 06/23/2022 05/09/2025
UPLOAD 04/17/2020 05/09/2025
CORRESP 04/15/2020 05/09/2025
Form Type Act Filing Date Report Date Action
4 03/26/2025 03/26/2025
4 03/26/2025 03/26/2025
4 03/26/2025 03/26/2025
4 03/26/2025 03/26/2025
4 03/26/2025 03/26/2025
4 03/26/2025 03/26/2025
4 03/26/2025 03/26/2025
4 03/26/2025 03/26/2025
4 03/26/2025 03/26/2025
4 03/26/2025 03/26/2025
Form Type Act Filing Date Report Date Action
SC 13G 34 11/21/2024 05/09/2025
DEF 14A 34 04/05/2024 05/16/2024
SC 13G 34 01/31/2024 05/09/2025
DEF 14A 34 04/25/2023 05/09/2025
DEF 14A 34 03/30/2022 05/11/2022
DEF 14A 34 04/09/2021 05/20/2021
DEF 14A 34 04/09/2020 05/19/2020
SC 13G 34 02/14/2020 05/09/2025
SC 13G 34 01/17/2020 05/09/2025
DEF 14A 34 04/04/2019 05/14/2019
Form Type Act Filing Date Report Date Action
8-K 34 03/28/2025 03/26/2025 |    |  
8-K 34 02/20/2025 02/20/2025 |    |  
8-K 34 01/22/2025 01/22/2025 |    |  
8-K 34 01/16/2025 01/16/2025 |    |  
DEFM14A 34 12/18/2024 05/09/2025
8-K 34 10/30/2024 10/30/2024 |    |  
8-K 34 10/30/2024 10/30/2024 |    |  
8-K 34 08/01/2024 08/01/2024 |    |  
8-K 34 06/04/2024 06/03/2024 |    |  
8-K 34 05/16/2024 05/16/2024 |    |  
Form Type Act Filing Date Report Date Action
DEF 14A 34 04/05/2024 05/16/2024
DEF 14A 34 04/25/2023 05/09/2025
DEF 14A 34 03/30/2022 05/11/2022
DEF 14A 34 04/09/2021 05/20/2021
DEF 14A 34 04/09/2020 05/19/2020
DEF 14A 34 04/04/2019 05/14/2019
DEF 14A 34 04/26/2018 06/14/2018
Form Type Act Filing Date Report Date Action
S-1 33 06/04/2018 05/09/2025
S-1/A 33 10/27/2017 05/09/2025
S-1/A 33 10/19/2017 05/09/2025
S-1/A 33 10/06/2017 05/09/2025
S-1 33 09/29/2017 05/09/2025