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ALTR        0001701732    
Filing Date Form Type Description Document
2021-03-17 4 FORM 4 SUBMISSION View Document
2021-03-17 4 FORM 4 SUBMISSION View Document
2021-03-17 4 FORM 4 SUBMISSION View Document
2021-03-17 8-K 8-K View Document
2021-03-16 4 FORM 4 SUBMISSION View Document
2021-03-16 4 FORM 4 SUBMISSION View Document
2021-03-16 4 FORM 4 SUBMISSION View Document
2021-03-16 4 FORM 4 SUBMISSION View Document
2021-03-16 4 FORM 4 SUBMISSION View Document
2021-03-16 4 FORM 4 SUBMISSION View Document
2021-03-11 4 FORM 4 SUBMISSION View Document
2021-03-08 4 FORM 4 SUBMISSION View Document
2021-03-08 4 FORM 4 SUBMISSION View Document
2021-03-08 4 FORM 4 SUBMISSION View Document
2021-03-08 4 FORM 4 SUBMISSION View Document
2021-03-08 4 FORM 4 SUBMISSION View Document
2021-03-08 4 FORM 4 SUBMISSION View Document
2021-03-08 4 FORM 4 SUBMISSION View Document
2021-02-26 10-K 10-K View Document
2021-02-25 8-K 8-K View Document
2021-02-19 4 FORM 4 SUBMISSION View Document
2021-02-19 4 FORM 4 SUBMISSION View Document
2021-02-18 4 FORM 4 SUBMISSION View Document
2021-02-18 4 FORM 4 SUBMISSION View Document
2021-02-18 4 FORM 4 SUBMISSION View Document
2021-02-18 4 FORM 4 SUBMISSION View Document
2021-02-16 SC 13G/A ALTAIR ENGINEERING INC. View Document
2021-02-16 SC 13G/A SC 13G/A View Document
2021-02-16 SC 13G/A SC 13G/A View Document
2021-02-11 SC 13G/A NONE View Document
2021-02-10 4 FORM 4 SUBMISSION View Document
2021-02-10 4 FORM 4 SUBMISSION View Document
2021-02-10 SC 13G/A SCHEDULE 13G/A View Document
2021-01-29 SC 13G/A View Document
2021-01-27 8-K 8-K View Document
2021-01-22 4 FORM 4 SUBMISSION View Document
2021-01-22 4 FORM 4 SUBMISSION View Document
2021-01-22 4 FORM 4 SUBMISSION View Document
2021-01-20 4 FORM 4 SUBMISSION View Document
2021-01-20 4 FORM 4 SUBMISSION View Document
2021-01-20 4 FORM 4 SUBMISSION View Document
2021-01-19 8-K 8-K View Document
2021-01-15 4 FORM 4 SUBMISSION View Document
2021-01-14 3 FORM 3 SUBMISSION View Document
2021-01-13 4 FORM 4 SUBMISSION View Document
2021-01-13 4 FORM 4 SUBMISSION View Document
2021-01-07 8-K 8-K View Document
2021-01-06 SC 13G/A CONESTOGA CAPITAL ADVISORS View Document
2020-12-21 4 FORM 4 SUBMISSION View Document
2020-12-21 4 FORM 4 SUBMISSION View Document
2020-12-21 4 FORM 4 SUBMISSION View Document
2020-12-21 4 FORM 4 SUBMISSION View Document
2020-12-21 4 FORM 4 SUBMISSION View Document
2020-12-18 4 FORM 4 SUBMISSION View Document
2020-12-17 4 FORM 4 SUBMISSION View Document
2020-12-17 4 FORM 4 SUBMISSION View Document
2020-12-17 4 FORM 4 SUBMISSION View Document
2020-12-14 4 FORM 4 SUBMISSION View Document
2020-12-08 8-K 8-K View Document
2020-12-08 4 FORM 4 SUBMISSION View Document
2020-12-08 4 FORM 4 SUBMISSION View Document
2020-12-08 4 FORM 4 SUBMISSION View Document
2020-12-07 4 FORM 4 SUBMISSION View Document
2020-12-04 4 FORM 4 SUBMISSION View Document
2020-12-04 4 FORM 4 SUBMISSION View Document
2020-12-03 4 FORM 4 SUBMISSION View Document
2020-12-03 4 FORM 4 SUBMISSION View Document
2020-12-03 4 FORM 4 SUBMISSION View Document
2020-12-03 4 FORM 4 SUBMISSION View Document
2020-12-03 4 FORM 4 SUBMISSION View Document
2020-12-03 4 FORM 4 SUBMISSION View Document
2020-12-03 4 FORM 4 SUBMISSION View Document
2020-12-03 4 FORM 4 SUBMISSION View Document
2020-12-03 4 FORM 4 SUBMISSION View Document
2020-12-03 4 FORM 4 SUBMISSION View Document
2020-12-03 4 FORM 4 SUBMISSION View Document
2020-11-27 4 FORM 4 SUBMISSION View Document
2020-11-18 4 FORM 4 SUBMISSION View Document
2020-11-18 4 FORM 4 SUBMISSION View Document
2020-11-18 4 FORM 4 SUBMISSION View Document
2020-11-16 4 FORM 4 SUBMISSION View Document
2020-11-16 4 FORM 4 SUBMISSION View Document
2020-11-13 4 FORM 4 SUBMISSION View Document
2020-11-13 4 FORM 4 SUBMISSION View Document
2020-11-13 4 FORM 4 SUBMISSION View Document
2020-11-12 4 FORM 4 SUBMISSION View Document
2020-11-12 4 FORM 4 SUBMISSION View Document
2020-11-12 4 FORM 4 SUBMISSION View Document
2020-11-10 4 FORM 4 SUBMISSION View Document
2020-11-05 10-Q 10-Q View Document
2020-11-05 8-K 8-K View Document
2020-11-02 4 FORM 4 SUBMISSION View Document
2020-10-21 4 FORM 4 SUBMISSION View Document
2020-10-21 4 FORM 4 SUBMISSION View Document
2020-10-21 4 FORM 4 SUBMISSION View Document
2020-10-19 4 FORM 4 SUBMISSION View Document
2020-10-19 4 FORM 4 SUBMISSION View Document
2020-10-19 4 FORM 4 SUBMISSION View Document
2020-10-16 4 FORM 4 SUBMISSION View Document
2020-10-16 4 FORM 4 SUBMISSION View Document

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