Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __ to __ Commission file number 001-34481 Mistras Group, Inc. (Exact name of registrant as specified in its charter) | Delaware | 22-3341267 ...

Mistras Group, Inc. (NYSE:MG) Q4 2020 Earnings Conference Call March 17, 2021 9:00 AM ET Company Participants Dennis Bertolotti ??? President and Chief Executive Officer Ed Prajzner ??? Executive Vice President, Chief Financial Officer and Treasurer Jon Wolk ??? Senior Executive Vice President and Chief Operating Officer Conference Call Participants Sean Eastman ??? KeyBanc Capital Markets Brian Russo ??? Sidoti Mitch Pinheiro ??? Sturdivant & Company Operator Ladies and gentlemen, thank you for joining Mis ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ___ to ___ Commission File Number 001-34481 Mistras Group, Inc. (Exact name of registrant as specified in its charter) Delaware 22-3341267 (State or other jurisdiction of inc ...

Mistras Group, Inc. (NYSE:MG) Q3 2020 Earnings Conference Call November 5, 2020 9:00 AM ET Company Participants Dennis Bertolotti ??? President and Chief Executive Officer Ed Prajzner ??? Executive Vice President, Chief Financial Officer and Treasurer Jon Wolk ??? Senior Executive Vice President and Chief Operating Officer Conference Call Participants Alex Dwyer ??? KeyBanc Capital Markets Tate Sullivan ??? Maxim Group Mitch Pinheiro ??? Sturdivant David Ridley-Lane ??? BofA Brian Russo ??? Sidoti Operator ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __ to __ | Delaware | 22-3341267 | | --- | --- | | (State or other jurisdiction of | (I.R.S. Employer | | incorporation or organization) ...

MISTRAS Group Inc (NYSE:MG) Q2 2020 Results Conference Call August 6, 2020 9:30 PM ET Company Participants Dennis Bertolotti - Chief Executive Officer Edward Prajzner - EVP, CFO and Treasurer Jonathan Wolk - Senior EVP and COO Conference Call Participants David Ridley-Lane - Bank of America Alex Dwyer - KeyBanc Capital Markets Brian Russo - Sidoti Mitch Pinheiro - Sturdivant Operator Thank you for joining MISTRAS Group Conference Call for its Second Quarter Ended June 30, 2020. My name is Tequila, and I w ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __ to __ Commission file number 001-34481 Mistras Group, Inc. (Exact name of registrant as specified in its charter) (State or other jurisdic ...

Mistras Group, Inc. (NYSE:MG) Q1 2020 Earnings Conference Call May 19, 2020 9:00 AM ET Company Participants Dennis M. Bertolotti - President and CEO Edward J. Prajzner - EVP, CFO and Treasurer Jonathan H. Wolk - SEVP and COO Conference Call Participants Edward Marshall - Sidoti & Company David Ridley-Lane - Bank of America Tate Sullivan - Maxim Group Unidentified Analyst - KeyBanc Capital Markets Mitchell Pinheiro - Sturdivant & Co Operator Thank you for joining Mistras Group Conference Call for its First Q ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Table of Contents For the quarterly period ended March 31, 2020 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __ to __ Commission file number 001- 34481 Mistras Group, Inc. (Exact name of registrant as specified in its charter) Delaware 22-3341267 (S ...

Form 10-K ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ___ to ___ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Commission File Number 001-34481 Mistras Group, Inc. (Exact name of registrant as specified in its charter) Delaware 22-3341267 (State or other jurisdiction of inc ...