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Mistras Group (MG) 10K Form and Latest SEC Filings 2026

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Latest Mistras Group SEC Filings & Recent Activity

Mistras Group (NYSE:MG) has submitted 386+ documents to the U.S. Securities and Exchange Commission (SEC) since 2017. For investors, these filings are the primary source of verified financial data — covering everything from annual revenue and debt levels in the 10-K, to material business events in 8-K current reports, to insider buying and selling activity in Form 4 disclosures. Key figures from these filings, including revenue, earnings, and cash flow, are summarized in Mistras Group's financial statements. The most recent filing was a Form 8-K submitted on May 5, 2026.

Form 4
Mistras Group, Inc. Reports Ownership Change on Mar. 26, 2026

Form 4 filings disclose changes in stock ownership by company insiders, including purchases, sales, grants, and option exercises.

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8-K
Mistras Group Files Current Report on May. 5, 2026

An 8-K is filed when a material corporate event occurs, such as an acquisition, leadership change, or financial update.

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10-K
Mistras Group Files Annual Report on Mar. 11, 2026

The 10-K contains Mistras Group's audited financial statements, revenue, earnings, and risk factors for the prior fiscal year.

View earnings history

Mistras Group SEC Filing History

Browse Mistras Group's complete SEC filing history using the filters below. Filter by form type - 10-K, 10-Q, 8-K, Form 4, and more - or set a custom date range to find a filing.

DateFilerForm TypeView
05/05/2026 4:17 PM
Mistras Group (1436126) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
04/23/2026 7:00 PM
Mill Road Capital III, L.P. (1767199) Filed by
Mistras Group (1436126) Subject
Form SCHEDULE 13D/A
04/07/2026 8:40 PM
Mistras Group (1436126) Filer
Form ARS
04/07/2026 4:24 PM
Mistras Group (1436126) Filer
Form DEF 14A
04/07/2026 4:25 PM
Mistras Group (1436126) Filer
Form DEFA14A
03/31/2026 3:17 PM
Mistras Group (1436126) Subject
Vahaviolos Aspasia Felice (2082296) Filed by
Form SCHEDULE 13G
03/31/2026 3:12 PM
Foglia Stephanie Athena (2082289) Filed by
Mistras Group (1436126) Subject
Form SCHEDULE 13D
03/26/2026 3:09 PM
Hammad Hanei Wail (2018025) Reporting
Mistras Group (1436126) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
03/23/2026 12:13 PM
Mistras Group (1436126) Issuer
Prajzner Edward J (1361681) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
03/17/2026 2:37 PM
Mistras Group (1436126) Issuer
Prajzner Edward J (1361681) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
03/11/2026 1:36 PM
Mistras Group (1436126) Filer
Form 10-K
Annual report pursuant to Section 13 or 15(d)  
03/10/2026 2:26 PM
Mistras Group (1436126) Issuer
Stamatakis Manuel N. (1473735) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
03/10/2026 10:21 AM
Mistras Group (1436126) Issuer
Prajzner Edward J (1361681) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
03/10/2026 9:25 AM
D'Alterio Gennaro A. (1457461) Reporting
Mistras Group (1436126) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
03/09/2026 8:23 PM
Hammad Hanei Wail (2018025) Reporting
Mistras Group (1436126) Issuer
Form 4/A
03/06/2026 7:34 AM
Mistras Group (1436126) Issuer
SHUMAN-FABBRI NATALIA (1585776) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
03/06/2026 7:02 AM
Mistras Group (1436126) Issuer
Stamatakis Manuel N. (1473735) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
03/06/2026 6:44 AM
Mistras Group (1436126) Issuer
Prajzner Edward J (1361681) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
03/04/2026 8:05 PM
Hammad Hanei Wail (2018025) Reporting
Mistras Group (1436126) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
03/04/2026 5:06 PM
Coggins Eileen Mary (2087458) Reporting
Mistras Group (1436126) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
03/03/2026 7:49 PM
D'Alterio Gennaro A. (1457461) Reporting
Mistras Group (1436126) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
02/27/2026 4:25 PM
Mistras Group (1436126) Issuer
Vahaviolos Aspasia Felice (2082296) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
02/27/2026 4:26 PM
2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos (2102046) Reporting
Mistras Group (1436126) Issuer
Form 3
Initial statement of beneficial ownership of securities  
01/09/2026 1:55 PM
Mistras Group (1436126) Issuer
Prajzner Edward J (1361681) Reporting
Form 4/A
01/09/2026 2:01 PM
Mistras Group (1436126) Issuer
Stamatakis Manuel N. (1473735) Reporting
Form 4/A
01/05/2026 3:17 PM
Mistras Group (1436126) Issuer
Stamatakis Manuel N. (1473735) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
01/05/2026 3:19 PM
Mistras Group (1436126) Issuer
Prajzner Edward J (1361681) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
12/05/2025 3:33 PM
Mistras Group (1436126) Issuer
PIZZI CHARLES P (1192898) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
12/04/2025 5:05 PM
D'Alterio Gennaro A. (1457461) Reporting
Mistras Group (1436126) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
11/06/2025 1:28 PM
Mistras Group (1436126) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
11/04/2025 4:02 PM
Mistras Group (1436126) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
10/01/2025 4:04 PM
Coggins Eileen Mary (2087458) Reporting
Mistras Group (1436126) Issuer
Form 4/A
10/01/2025 2:34 PM
Coggins Eileen Mary (2087458) Reporting
Mistras Group (1436126) Issuer
Form 3/A
09/25/2025 2:53 PM
Coggins Eileen Mary (2087458) Reporting
Mistras Group (1436126) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
09/25/2025 1:22 PM
Coggins Eileen Mary (2087458) Reporting
Mistras Group (1436126) Issuer
Form 3
Initial statement of beneficial ownership of securities  
09/11/2025 3:50 PM
Mistras Group (1436126) Subject
Vahaviolos Aspasia Felice (2082296) Filed by
Form SCHEDULE 13G
09/11/2025 3:50 PM
Kyriakopoulos Kristy Vahaviolos (2082695) Filed by
Mistras Group (1436126) Subject
Form SCHEDULE 13G
09/11/2025 3:52 PM
Foglia Stephanie Athena (2082289) Filed by
Mistras Group (1436126) Subject
Form SCHEDULE 13G
09/10/2025 3:14 PM
Mistras Group (1436126) Issuer
Sotirios Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust (1963130) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
09/10/2025 3:23 PM
Mistras Group (1436126) Issuer
Vahaviolos Aspasia Felice (2082296) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
09/10/2025 3:01 PM
Mistras Group (1436126) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
09/10/2025 3:04 PM
Mistras Group (1436126) Issuer
SHUMAN-FABBRI NATALIA (1585776) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
09/10/2025 3:06 PM
Mistras Group (1436126) Issuer
Vahaviolos Aspasia Felice (2082296) Reporting
Form 3
Initial statement of beneficial ownership of securities  
08/11/2025 2:13 PM
Mistras Group (1436126) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
06/02/2025 12:51 PM
Mistras Group (1436126) Filer
Form ARS/A
05/30/2025 8:20 AM
Mistras Group (1436126) Filer
Form SD
Specialized Disclosure Report  
05/23/2025 9:58 AM
Mistras Group (1436126) Filer
Form 8-K
Current report pursuant to Section 13 or 15(d)  
05/21/2025 12:35 PM
Mistras Group (1436126) Issuer
PIZZI CHARLES P (1192898) Reporting
Form 4
Statement of changes in beneficial ownership of securities  
05/21/2025 11:42 AM
Lohmeier Michelle (1645009) Reporting
Mistras Group (1436126) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
05/21/2025 11:43 AM
GLANTON RICHARD H (1060493) Reporting
Mistras Group (1436126) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
05/21/2025 11:44 AM
FORESE JAMES J (1179521) Reporting
Mistras Group (1436126) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
05/21/2025 11:44 AM
DEBENEDICTIS NICHOLAS (1194707) Reporting
Mistras Group (1436126) Issuer
Form 4
Statement of changes in beneficial ownership of securities  
05/09/2025 2:53 PM
Mistras Group (1436126) Filer
Form 10-Q
General form for quarterly reports under Section 13 or 15(d)  
(Data available from 1/1/2016 forward)

Mistras Group SEC Filings - Frequently Asked Questions

Mistras Group (MG) has submitted 386+ filings to the SEC since 2017. You can browse the complete history or filter by form type using the tools above.

Mistras Group's fiscal year ends on December 31. The company typically files its 10-K annual report by the end of February, covering the prior fiscal year's financial results. Key financial data from these reports is available on Mistras Group's financial statements page.

The most recent filing was a Form 8-K submitted on May 5, 2026. This was a current report on a material business event.

SEC Filing Types: 10-K, 10-Q, 8-K and More

SEC filings are legally required disclosures that public companies submit to the U.S. Securities and Exchange Commission. Unlike press releases or earnings call transcripts, these documents are filed under legal obligation — meaning the financial data they contain is audited, standardized, and subject to penalties if materially false. For investors, that makes SEC filings the most reliable primary source available for evaluating a company's true financial position.

Yes. All SEC filings are publicly available through the SEC's EDGAR database and on financial research platforms like MarketBeat. Companies are required by law to make these disclosures accessible to all investors — meaning retail investors have access to the same source documents as institutional analysts.

A 10-K is an annual report containing audited financial statements and a full review of the company's business — it is the most comprehensive filing a company makes each year. A 10-Q is a shorter, unaudited quarterly update filed three times per year between annual reports. Investors typically use the 10-K for deep fundamental analysis and the 10-Q to track whether the company is on pace with its guidance mid-year.

The most important filing for fundamental investors. Filed once per year, the 10-K contains audited financial statements, revenue and earnings trends, debt obligations, risk factors, and management's own assessment of the business. Reading the risk factors section and comparing year-over-year financials can reveal issues that don't show up in analyst summaries.

An unaudited financial update filed three times per year (the 10-K covers Q4). Investors use 10-Qs to track whether guidance is on pace, monitor changes in cash flow or inventory, and catch any mid-year shifts in business conditions before they become headline news.

Filed within four business days of a material event — earnings releases, merger announcements, executive departures, or major asset sales. Because 8-Ks are filed before media coverage catches up, they are often the fastest way to get unfiltered information directly from the company on market-moving events.

Filed within two business days whenever an executive or director buys or sells company stock. Insider purchases — especially large or clustered buys — are often interpreted as a signal of management confidence. Insider selling is more ambiguous but worth monitoring for patterns, particularly around lock-up expirations or ahead of major announcements.


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This page (NYSE:MG) was last updated on 5/7/2026 by MarketBeat.com Staff.
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