[PART I—FINANCIAL INFORMATION](index=4&type=section&id=PART%20I%E2%80%94FINANCIAL%20INFORMATION) This part provides the unaudited financial statements, management's discussion, market risk disclosures, and controls and procedures [Item 1. Financial Statements](index=4&type=section&id=ITEM%201.%20Financial%20Statements) This section presents the unaudited condensed consolidated financial statements for Q1 2020, revealing a significant net loss of **$98.5 million** driven by impairment charges and a decrease in total assets [Condensed Consolidated Financial Statements](index=4&type=section&id=Condensed%20Consolidated%20Financial%20Statements) The financial statements for Q1 2020 show a significant deterioration, with total assets decreasing to **$583.5 million** and a net loss of **$98.5 million** due to impairment charges Condensed Consolidated Balance Sheet Highlights (in thousands) | Account | March 31, 2020 (unaudited) | December 31, 2019 | | :--- | :--- | :--- | | **Total current assets** | $168,818 | $179,155 | | **Goodwill** | $196,289 | $282,410 | | **Intangible assets, net** | $72,019 | $109,537 | | **Total assets** | $583,545 | $719,878 | | **Total current liabilities** | $101,420 | $109,240 | | **Total liabilities** | $411,792 | $433,856 | | **Total equity** | $171,753 | $286,022 | Condensed Consolidated Statement of Income (Loss) (in thousands) | Account | Three months ended March 31, 2020 | Three months ended March 31, 2019 | | :--- | :--- | :--- | | Revenue | $159,465 | $176,787 | | Gross profit | $40,644 | $48,874 | | Impairment charges | $106,062 | $— | | Loss from operations | $(111,228) | $(4,396) | | Net loss attributable to Mistras Group, Inc. | $(98,509) | $(5,293) | | Diluted EPS | $(3.40) | $(0.19) | Condensed Consolidated Statement of Cash Flows Highlights (in thousands) | Account | Three months ended March 31, 2020 | Three months ended March 31, 2019 | | :--- | :--- | :--- | | Net cash provided by operating activities | $6,107 | $8,177 | | Net cash used in investing activities | $(4,204) | $(5,001) | | Net cash provided by (used in) financing activities | $492 | $(3,949) | | Net change in cash and cash equivalents | $2,011 | $(944) | [Notes to Unaudited Condensed Consolidated Financial Statements](index=10&type=section&id=Notes%20to%20Unaudited%20Condensed%20Consolidated%20Financial%20Statements) These notes detail the financial statements, explaining significant non-cash impairment charges from COVID-19 and oil price drops, revenue disaggregation, and credit facility amendments - The COVID-19 pandemic and a significant drop in oil prices adversely affected the company's operations and financial markets, necessitating a reassessment of asset values[25](index=25&type=chunk)[26](index=26&type=chunk) Impairment Charges for Q1 2020 (in millions) | Asset Type | Impairment Charge | | :--- | :--- | | Goodwill | $77.1 | | Intangible Assets | $28.8 | | Right-of-use Asset | $0.2 | | **Total** | **$106.1** | - Due to uncertainty from the pandemic and oil price drop, the company amended its credit agreement on May 15, 2020, to modify financial covenants[27](index=27&type=chunk)[108](index=108&type=chunk) Revenue by Industry (in thousands) | Industry | Q1 2020 Revenue | Q1 2019 Revenue | | :--- | :--- | :--- | | Oil & Gas | $92,498 | $101,385 | | Aerospace & Defense | $22,214 | $24,755 | | Industrials | $18,274 | $21,630 | | Other | $26,479 | $29,017 | | **Total** | **$159,465** | **$176,787** | Goodwill Impairment by Segment - Q1 2020 (in thousands) | Segment | Impairment Charge | | :--- | :--- | | Services | $(57,227) | | International | $(19,862) | | **Total** | **$(77,089)** | [Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations (MD&A)](index=35&type=section&id=ITEM%202.%20Management%27s%20Discussion%20and%20Analysis%20of%20Financial%20Condition%20and%20Results%20of%20Operations) MD&A attributes the **9.8%** revenue decline and **$111.2 million** operating loss to COVID-19 and oil price drops, detailing cost reductions and liquidity management [Overview](index=35&type=section&id=Overview) This overview describes the company's asset protection solutions business and the adverse impact of COVID-19 and oil price drops, leading to impairment and cost reductions - The company operates as a "OneSource for Asset Protection Solutions®" provider, evaluating the structural integrity of critical infrastructure in energy, aerospace, and industrial markets[146](index=146&type=chunk) - The COVID-19 pandemic and the significant drop in oil prices have adversely affected the company's workforce, operations, and the markets in which it operates[151](index=151&type=chunk)[152](index=152&type=chunk) - In response to the economic downturn, the company initiated a cost reduction program, including temporary salary reductions for named executive officers ranging from **25%** to **45%**[153](index=153&type=chunk) [Results of Operations](index=38&type=section&id=Results%20of%20Operations) Operational performance for Q1 2020 shows a **9.8%** revenue decrease to **$159.5 million** and a **$111.2 million** operating loss, primarily due to impairment charges Financial Performance Summary (in thousands) | Metric | Q1 2020 | Q1 2019 | | :--- | :--- | :--- | | Revenues | $159,465 | $176,787 | | Gross Profit | $40,644 | $48,874 | | Gross Profit Margin | 25.5% | 27.6% | | Loss from Operations | $(111,228) | $(4,396) | | Net Loss | $(98,522) | $(5,286) | - The **9.8%** decrease in total revenue was primarily the result of the impact of COVID-19, as many customers cut back operations. All three segments (Services, International, and Products and Systems) experienced revenue declines[161](index=161&type=chunk) - Operating expenses increased by **185%** year-over-year, predominantly due to impairment charges of **$106.1 million** recorded in Q1 2020[169](index=169&type=chunk) Reconciliation of GAAP Loss from Operations to Non-GAAP Income (Loss) before Special Items (in thousands) | | Q1 2020 | Q1 2019 | | :--- | :--- | :--- | | **Loss from operations (GAAP)** | **$(111,228)** | **$(4,396)** | | Impairment charges | $106,062 | $— | | Bad debt provision | $— | $5,491 | | Other adjustments | $(557) | $1,203 | | **Income (loss) before special items (non-GAAP)** | **$(5,723)** | **$2,298** | [Liquidity and Capital Resources](index=44&type=section&id=Liquidity%20and%20Capital%20Resources) Liquidity details show cash from operations decreased to **$6.1 million**, with **$17.0 million** cash on hand and a credit agreement amendment to modify financial covenants Cash Flow Summary (in thousands) | Activity | Q1 2020 | Q1 2019 | | :--- | :--- | :--- | | Operating activities | $6,107 | $8,177 | | Investing activities | $(4,204) | $(5,001) | | Financing activities | $492 | $(3,949) | - As of March 31, 2020, the company had cash and cash equivalents of **$17.0 million** and available borrowing capacity of **$139.7 million** under its Credit Agreement[179](index=179&type=chunk) - On May 15, 2020, the company amended its Credit Agreement to modify financial covenants in response to the uncertain impact of the COVID-19 pandemic and the significant drop in oil prices[181](index=181&type=chunk) [Item 3. Quantitative and Qualitative Disclosures about Market Risk](index=46&type=section&id=ITEM%203.%20Quantitative%20and%20Qualitative%20Disclosures%20about%20Market%20Risk) No significant changes occurred in the company's quantitative and qualitative disclosures about market risk since the 2019 Annual Report - There have been no significant changes to the company's quantitative and qualitative disclosures about market risk as discussed in the 2019 Annual Report[185](index=185&type=chunk) [Item 4. Controls and Procedures](index=46&type=section&id=ITEM%204.%20Controls%20and%20Procedures) Management concluded that disclosure controls and procedures were ineffective as of March 31, 2020, due to material weaknesses in income tax accounting, with remediation efforts underway - Management concluded that as of March 31, 2020, the company's disclosure controls and procedures were not effective[186](index=186&type=chunk) - The ineffectiveness is due to material weaknesses in internal control over financial reporting previously disclosed in the 2019 Annual Report, related to accounting for income taxes[188](index=188&type=chunk) - Management is actively engaged in remediation efforts, including enhancing the design of controls and expanding income tax accounting resources[189](index=189&type=chunk) [PART II—OTHER INFORMATION](index=47&type=section&id=PART%20II%E2%80%94OTHER%20INFORMATION) This part details legal proceedings, new COVID-19 related risk factors, unregistered equity sales, and a list of filed exhibits [Item 1. Legal Proceedings](index=47&type=section&id=ITEM%201.%20Legal%20Proceedings) This section details legal proceedings, including a dispute over pipeline weld inspections where the company seeks **$1.4 million** and faces a **$7.6 million** counterclaim - The company is involved in a lawsuit with a customer regarding pipeline weld inspections. The company is seeking to recover **$1.4 million** in past due receivables, while the customer has filed a counterclaim for approximately **$7.6 million** in damages[127](index=127&type=chunk) [Item 1.A. Risk Factors](index=47&type=section&id=ITEM%201.A.%20Risk%20Factors) New risk factors highlight the adverse impact of COVID-19 on operations and demand, including potential difficulty meeting amended credit agreement financial covenants - The COVID-19 pandemic is adversely affecting, and is expected to continue to adversely affect, the company's business, operations, and customer demand, particularly in the oil and gas and aerospace industries[193](index=193&type=chunk) - There is a risk that the company may have difficulty meeting the amended financial covenants in its credit agreement due to the economic disruption from COVID-19, which could lead to a default and impact its ability to continue as a going concern[195](index=195&type=chunk) [Item 2. Unregistered Sales of Equity Securities and Use of Proceeds](index=48&type=section&id=ITEM%202.%20Unregistered%20Sales%20of%20Equity%20Securities%20and%20Use%20of%20Proceeds) No unregistered equity sales occurred, but **41,446** shares were repurchased in March 2020 from employees for tax withholding on restricted stock units Repurchases of Equity Securities - Q1 2020 | Month Ending | Total Number of Shares Purchased | Average Price Paid per Share | | :--- | :--- | :--- | | January 31, 2020 | — | $— | | February 29, 2020 | — | $— | | March 31, 2020 | 41,446 | $3.78 | - The shares were acquired as a result of surrender by employees to satisfy tax withholding obligations in connection with the vesting of restricted stock units[198](index=198&type=chunk) [Item 6. Exhibits](index=49&type=section&id=ITEM%206.%20Exhibits) This section lists all exhibits filed with the Form 10-Q, including the credit agreement amendment, CEO/CFO certifications, and XBRL data - The report includes several exhibits, such as an amendment to the company's credit agreement, CEO/CFO certifications, and XBRL data files[204](index=204&type=chunk)

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 ...

Mistras Group, Inc. (NYSE:MG) Q4 2019 Results Conference Call March 26, 2020 9:00 AM ET Company Participants Dennis Bertolotti - President and CEO Ed Prajzner - EVP, CFO and Treasurer Jon Wolk - SEVP and COO Conference Call Participants Edward Marshall - Sidoti & Company David Ridley-Lane - BOA Sean Eastman - Keybanc Tate Sullivan - Maxim Group Operator Thanks for joining the Mistras Conference Call for its Fourth Quarter and Year Ended 2019. My name is Kevin and I'll be your event manager today. We'll be a ...

Mistras Group, Inc. (NYSE:MG) Q3 2019 Earnings Conference Call November 5, 2019 9:00 AM ET Company Participants Nestor Makarigakis - Group Director, Marketing Dennis Bertolotti - President and CEO Edward Prajzner - SVP and CFO Sotirios Vahaviolos - Founder and Executive Chairman Jonathan Wolk - Senior EVP and COO Conference Call Participants Edward Marshall - Sidoti & Company David Ridley-Lane - Bank of America Tate Sullivan - Maxim Group Edward Marshall - Sidoti & Company Operator Good morning ladies and g ...

PART I—FINANCIAL INFORMATION [Financial Statements](index=4&type=section&id=ITEM%201.%20Financial%20Statements) The company's financial statements for the period ended September 30, 2019, reflect total assets of $728.0 million, revenue of $569.6 million, and net income of $5.2 million, with operating cash flow at $40.5 million Condensed Consolidated Balance Sheet Highlights (in thousands) | Account | Sep 30, 2019 (unaudited) | Dec 31, 2018 | | :--- | :--- | :--- | | Cash and cash equivalents | $14,372 | $25,544 | | Total current assets | $192,950 | $202,791 | | Goodwill | $283,121 | $279,259 | | Total assets | $728,027 | $694,037 | | Total current liabilities | $111,243 | $100,471 | | Long-term debt, net | $260,753 | $283,787 | | Total liabilities | $449,681 | $422,963 | | Total equity | $278,346 | $271,074 | Condensed Consolidated Statement of Income Highlights (in thousands, except per share data) | Metric | Q3 2019 | Q3 2018 | Nine Months 2019 | Nine Months 2018 | | :--- | :--- | :--- | :--- | :--- | | Revenue | $192,192 | $182,169 | $569,595 | $561,592 | | Gross Profit | $57,769 | $52,332 | $166,714 | $155,559 | | Income from Operations | $10,779 | $3,017 | $21,802 | $19,720 | | Net Income (Loss) Attributable to Mistras | $3,093 | $(1,011) | $5,231 | $7,897 | | Diluted EPS | $0.11 | $(0.04) | $0.18 | $0.27 | Condensed Consolidated Statement of Cash Flows Highlights (in thousands) | Cash Flow Activity | Nine Months Ended Sep 30, 2019 | Nine Months Ended Sep 30, 2018 | | :--- | :--- | :--- | | Net cash provided by operating activities | $40,476 | $24,184 | | Net cash used in investing activities | $(21,628) | $(9,831) | | Net cash used in financing activities | $(29,521) | $(23,905) | | Net change in cash and cash equivalents | $(11,172) | $(10,468) | [Notes to Unaudited Condensed Consolidated Financial Statements](index=10&type=section&id=Notes%20to%20Unaudited%20Condensed%20Consolidated%20Financial%20Statements) The notes detail the company's accounting policies, including the adoption of ASC 842, a $4.8 million acquisition, and a $5.9 million multi-employer pension withdrawal liability, alongside segment performance and debt structure information - The company is a global provider of technology-enabled asset protection solutions, serving industries like oil and gas, aerospace, power generation, and public infrastructure[24](index=24&type=chunk) - On January 1, 2019, the Company adopted the new lease accounting standard (ASC 842), resulting in the recognition of a right-of-use (ROU) asset and liability of approximately **$38 million** for its operating leases[34](index=34&type=chunk)[36](index=36&type=chunk) - During the nine months ended September 30, 2019, the company completed one acquisition for **$4.8 million** in cash and up to **$4.3 million** in contingent consideration, providing pipeline integrity management software and services[67](index=67&type=chunk) - The company recorded a charge of **$5.9 million** in Q3 2018 for a probable withdrawal liability from a multi-employer pension plan, with an additional **$0.5 million** recorded in the first nine months of 2019, leaving an estimated remaining liability of approximately **$3.1 million** as of September 30, 2019[116](index=116&type=chunk) [Management's Discussion and Analysis of Financial Condition and Results of Operations (MD&A)](index=31&type=section&id=ITEM%202.%20Management%27s%20Discussion%20and%20Analysis%20of%20Financial%20Condition%20and%20Results%20of%20Operations) Management discusses the financial results, noting a 6% revenue increase in Q3 2019 and improved gross profit margin, detailing segment performance, the Onstream acquisition impact, and special items affecting operating income, while confirming sufficient liquidity with $40.5 million in operating cash flow and $131.4 million available credit [Overview](index=31&type=section&id=Overview) The company provides 'OneSource for Asset Protection Solutions®' for critical infrastructure across oil & gas, aerospace, and power generation, driven by aging infrastructure, outsourcing, and stricter regulations, operating through Services, International, and Products and Systems segments - The company's business model focuses on providing a comprehensive portfolio of customized solutions to help customers maximize safety, comply with regulations, and extend asset life[133](index=133&type=chunk) - Key market trends supporting the business include the need to extend the life of aging infrastructure, outsourcing of technical services, and increasing safety regulations[145](index=145&type=chunk)[146](index=146&type=chunk)[149](index=149&type=chunk) - The December 2018 acquisition of Onstream provides a strong foundation in the midstream oil and gas market with its inline inspection capabilities and digital software solutions[144](index=144&type=chunk) [Results of Operations](index=35&type=section&id=Results%20of%20Operations) Q3 2019 revenue increased **6%** to **$192.2 million** with gross profit margin improving to **30.1%**, while nine-month revenue grew **1%** to **$569.6 million**, and GAAP income from operations significantly increased to **$10.8 million** despite prior-year pension charges Revenue by Segment (in thousands) | Segment | Q3 2019 | Q3 2018 | Nine Months 2019 | Nine Months 2018 | | :--- | :--- | :--- | :--- | :--- | | Services | $152,572 | $141,340 | $454,079 | $434,653 | | International | $37,050 | $36,671 | $109,302 | $116,238 | | Products and Systems | $5,521 | $5,716 | $13,222 | $17,286 | | **Total** | **$192,192** | **$182,169** | **$569,595** | **$561,592** | Gross Profit Margin by Segment | Segment | Q3 2019 | Q3 2018 | Nine Months 2019 | Nine Months 2018 | | :--- | :--- | :--- | :--- | :--- | | Services | 28.4% | 27.5% | 28.2% | 26.2% | | International | 31.6% | 29.7% | 30.3% | 29.5% | | Products and Systems | 49.6% | 45.6% | 43.9% | 44.6% | | **Total Company** | **30.1%** | **28.7%** | **29.3%** | **27.7%** | - Q3 2018 income from operations was significantly impacted by a **$5.9 million** pension withdrawal expense and **$2.8 million** in reorganization costs in the International segment[169](index=169&type=chunk) - Interest expense increased to **$10.1 million** for the nine months of 2019 from **$5.6 million** in 2018, primarily due to higher borrowing levels for the acquisition completed in Q4 2018[177](index=177&type=chunk) [Liquidity and Capital Resources](index=40&type=section&id=Liquidity%20and%20Capital%20Resources) The company's liquidity is primarily from operations, cash balances, and its credit facility, with net cash from operations increasing **67%** to **$40.5 million** for the nine months ended September 30, 2019, and **$131.4 million** available under its credit facility, while remaining in compliance with all debt covenants - Cash provided by operating activities increased by **$16.3 million (67%)** to **$40.5 million** in the first nine months of 2019 compared to the same period in 2018, mainly due to working capital movements[179](index=179&type=chunk)[180](index=180&type=chunk) - As of September 30, 2019, the company had **$14.4 million** in cash and cash equivalents and **$131.4 million** available for borrowing under its credit facility[184](index=184&type=chunk) - The company was in compliance with all financial covenants of its Credit Agreement as of September 30, 2019[185](index=185&type=chunk) [Quantitative and Qualitative Disclosures about Market Risk](index=41&type=section&id=ITEM%203.%20Quantitative%20and%20Qualitative%20Disclosures%20about%20Market%20Risk) The company reports no significant changes to its quantitative and qualitative disclosures regarding market risk compared to its 2018 Annual Report on Form 10-K - There have been no significant changes to the Company's disclosures about market risk as discussed in the 2018 Annual Report[189](index=189&type=chunk) [Controls and Procedures](index=41&type=section&id=ITEM%204.%20Controls%20and%20Procedures) Management, including the CEO and CFO, concluded the company's disclosure controls and procedures were effective as of September 30, 2019, with no material changes to internal control over financial reporting during the quarter - Based on an evaluation as of September 30, 2019, the CEO and CFO concluded that the Company's disclosure controls and procedures are effective[190](index=190&type=chunk) - No changes occurred during the quarter ended September 30, 2019, that materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting[191](index=191&type=chunk) PART II—OTHER INFORMATION [Legal Proceedings](index=43&type=section&id=ITEM%201.%20Legal%20Proceedings) The company refers to Note 14 of the financial statements for legal proceedings, reporting no material developments since the 2018 Annual Report beyond those disclosed therein - For details on legal proceedings, the report refers to Note 14–Commitments and Contingencies in the financial statements[193](index=193&type=chunk) [Risk Factors](index=43&type=section&id=ITEM%201.A.%20Risk%20Factors) There have been no material changes to the risk factors previously disclosed in the company's 2018 Annual Report on Form 10-K - There have been no material changes to the risk factors previously disclosed in the 2018 Annual Report[194](index=194&type=chunk) [Unregistered Sales of Equity Securities and Use of Proceeds](index=43&type=section&id=ITEM%202.%20Unregistered%20Sales%20of%20Equity%20Securities%20and%20Use%20of%20Proceeds) The company reported no unregistered sales of equity securities, disclosed shares acquired from employees for tax withholding on vested restricted stock units, and terminated its share repurchase plan effective April 1, 2019 - The company's share repurchase plan, which had **$25.1 million** remaining, was terminated by the Board of Directors effective April 1, 2019[198](index=198&type=chunk) - During the quarter, the company acquired shares from employees to satisfy tax withholding obligations in connection with the vesting of restricted stock units[197](index=197&type=chunk) [Defaults Upon Senior Securities](index=43&type=section&id=ITEM%203.%20Defaults%20Upon%20Senior%20Securities) The company reported no defaults upon senior securities - None reported[199](index=199&type=chunk) [Mine Safety Disclosures](index=43&type=section&id=ITEM%204.%20Mine%20Safety%20Disclosures) This item is not applicable to the company - Not applicable[200](index=200&type=chunk) [Other Information](index=43&type=section&id=ITEM%205.%20Other%20Information) The company reported no other information for this item - None reported[201](index=201&type=chunk) [Exhibits](index=44&type=section&id=ITEM%206.%20Exhibits) This section lists exhibits filed with the Form 10-Q, including CEO and CFO certifications and XBRL data files - Exhibits filed include certifications by the CEO and CFO as required by the Sarbanes-Oxley Act, and XBRL interactive data files[202](index=202&type=chunk)

MISTRAS Group, Inc. (NYSE:MG) Q2 2019 Results Earnings Conference Call August 6, 2019 9:00 AM ET Company Participants Nestor Makarigakis - Group Director, Marketing Dennis Bertolotti - President and Chief Executive Officer Edward Prajzner - Senior Vice President, Chief Financial Officer and Treasurer Jonathan Wolk - Senior Executive Vice President and Chief Operating Officer Conference Call Participants Tahira Afzal - KeyBanc Capital Markets David Ridley-Lane - Bank of America Merrill Lynch Chip Moore - Can ...

Table of Contents 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 For the quarterly period ended June 30, 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 __ Commission file number 001- 34481 Mistras Group, Inc. (Exact name of registrant as specified in its charter) Delaware 22-3341267 (St ...

Mistras Group, Inc. (NYSE:MG) Q1 2019 Earnings Conference Call May 7, 2019 9:00 AM ET Company Participants Nestor Makarigakis ??? Director-Marketing Communications-MISTRAS Group Dennis Bertolotti ??? President and Chief Executive Officer Ed Prajzner ??? Senior Vice President, Chief Financial Officer and Treasurer Jon Wolk ??? Senior Executive Vice President and Chief Operating Officer Conference Call Participants Tahira Afzal ??? KeyBanc Edward Marshall ??? Sidoti & Company Operator Good morning, ladies and ...

Table of Contents 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 For the quarterly period ended March 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 __ Commission file number 001- 34481 Mistras Group, Inc. (Exact name of registrant as specified in its charter) Delaware 22-3341267 (S ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 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, 2018 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 (I.R.S. Employer (State or other juris ...