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Feb 14, 2024 03:04PM Form SC 13G/A Mistras Group, Inc. Filed by: Vahaviolos Sotirios J.

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Apr 30, 2020 09:33AM Form SC 13G/A Mistras Group, Inc. Filed by: BERNZOTT CAPITAL ADVISORS

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Aug 12, 2019 12:25PM Form SC 13G/A Mistras Group, Inc. Filed by: WELLINGTON MANAGEMENT GROUP LLP

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Feb 9, 2018 09:45AM Form SC 13G Mistras Group, Inc. Filed by: VANGUARD GROUP INC

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Feb 10, 2016 02:40PM Form SC 13G/A Mistras Group, Inc. Filed by: RBC Global Asset Management (U.S.)

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