# EDGAR Filing Document

**Accession Number:** 0001963130
**File Stem:** 0001127602-23-001973
**Filing Date:** 2023-1
**Character Count:** 8255
**Document Hash:** 96e2f343ec23d84514ce39fb8df4869d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001127602-23-001973.hdr.sgml**: 20230120

**ACCESSION NUMBER**: 0001127602-23-001973

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20230109

**FILED AS OF DATE**: 20230120

**DATE AS OF CHANGE**: 20230120

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Sotirios Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust
- **CENTRAL INDEX KEY:** 0001963130
- **STATE OF INCORPORATION:** NJ

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34481
- **FILM NUMBER:** 23542027

**BUSINESS ADDRESS:**
- **STREET 1:** C/O MISTRAS GROUP
- **STREET 2:** 195 CLARKSVILLE ROAD
- **CITY:** PRINCETON JUNCTION
- **STATE:** NJ
- **ZIP:** 08550
- **BUSINESS PHONE:** 6103246463

**MAIL ADDRESS:**
- **STREET 1:** C/O MISTRAS GROUP
- **STREET 2:** 195 CLARKSVILLE ROAD
- **CITY:** PRINCETON JUNCTION
- **STATE:** NJ
- **ZIP:** 08550
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Mistras Group, Inc.
- **CENTRAL INDEX KEY:** 0001436126
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-ENGINEERING SERVICES [8711]
- **IRS NUMBER:** 223341267
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 195 CLARKSVILLE ROAD
- **CITY:** PRINCETON JUNCTION
- **STATE:** NJ
- **ZIP:** 08550
- **BUSINESS PHONE:** 609-716-4000

**MAIL ADDRESS:**
- **STREET 1:** 195 CLARKSVILLE ROAD
- **CITY:** PRINCETON JUNCTION
- **STATE:** NJ
- **ZIP:** 08550

## Ex-24

```

POWER OF ATTORNEY

I, the undersigned, being a person required to file reports pursuant
to Section?16 of the Securities Exchange Act of 1934 (the ?Section 16?)
regarding the undersigned?s beneficial ownership of equity securities
in Mistras?Group, Inc. (the??Company?), hereby constitute and appoint
each of Michael Keefe, Edward Prajzner and Michael Kozole, signing
singly, as my true and lawful attorney-in-fact to:

(1) Prepare, execute in my name and on my behalf, and submit to the U.S.
Securities and Exchange Commission (the??SEC?) a Form?ID, including
amendments thereto, and any other documents necessary or appropriate
to obtain codes and passwords enabling me to make electronic filings
with the SEC of reports required by Section 16 or any rule or
regulation of the SEC;

(2) execute for and on my behalf, as a Section?16 reporting person of
the Company, Forms 3, 4, and 5 in accordance with Section 16 and the
rules thereunder, and any other forms or reports I may be required to
file in connection with my ownership, acquisition, or disposition of
securities of the Company;

(3) do and perform any and all acts for and on my behalf which may be
necessary or desirable to complete and execute any such Form?3, 4, or
5, or other form or report, and file such form or report with the SEC
and any stock exchange or similar authority; and

(4) take any other action of any type whatsoever in connection with
the foregoing which, in the opinion of such attorney-in-fact, may be
to my benefit, in my interest, or legally required by me, it being
understood that the documents executed by such attorney-in-fact on my
behalf pursuant to this Power of Attorney shall be in such form and
shall contain such terms and conditions as such
attorney-in-fact may approve in such attorney-in-fact?s discretion.

I hereby grant to each such attorney-in-fact full power and authority
to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and purposes as I
might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that
such attorney-in-fact, or such attorney-in-fact?s substitute or
substitutes, shall lawfully do or cause to be done by virtue of this
Power of Attorney and the rights and powers herein granted.  I
acknowledge that the foregoing attorneys-in-fact, in serving in such
capacity at my request, are not assuming, nor is the Company assuming,
any of my responsibilities to comply with Section?16.

This Power of Attorney shall remain in full force and effect until
I am no longer required to file Forms 3, 4, and 5 with respect to my
holdings of and transactions in securities of the Company, unless
earlier revoked by me.  By executing this Power of Attorney, I
revoke all powers of attorney previously executed by me regarding
the powers and authority granted in this Power of Attorney.

Dated:  January 9, 2023

/s/ Stephanie Foglia
Stephanie Folgia, as Trustee of the
Sotirios Vahaviolos January 2023 2-Year
Grantor Retained Annuity Trust

```

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Sotirios Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust<br><sub>(Last) (First) (Middle)</sub><br>C/O MISTRAS GROUP<br>195 CLARKSVILLE ROAD<br><sub>(Street)</sub><br>PRINCETON JUNCTION, NJ 08550<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>Mistras Group, Inc. [ MG ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2023-01-09 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [X] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<br>_ _ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Common Stock | 6734718 | D |  |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |

---

**Remarks:**
Reporting person was established by the grantor, Sotirios Vahaviolos, Executive Chairman and Founder of the Issuer.  The shares were acquired  a gift by  Dr. Vahaviolos.  Dr. Vahaviolos' daughter, who does not reside with him, is the trustee for the the trust and will hold sole power over the voting and disposition of the shares of Mistras Group common stock held by the trust.  Dr. Vahaviolos and the GRAT trustee have agreed that the GRAT will be subject to the issuer's insider trading compliance policy regarding the shares of Mistras Group common stock held by the trust.

**Signature:** /s/ Michael C. Keefe, attorney-in-fact for Stephanie Foglia, Trustee  
**Date:** 2023-01-20

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**