Document

SD 1 a2026sdconflictminerals.htm SD Document

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM SD

Specialized Disclosure Report

Mistras Group, Inc.

(Exact name of registrant as specified in its charter)

Delaware

001- 34481

22-3341267

(State or other jurisdiction

(Commission

(IRS Employer

of incorporation)

File Number)

Identification No.)


195 Clarksville Road
Princeton Junction, New Jersey						8550
(Address of principal executive offices)						(Zip Code)

Eileen Coggins; Tel. 609-716-4000

(Name and telephone number, including area code, of the person to contact in connection with this report.)

Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:

ý Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2025.

Section 1 - Conflict Minerals Disclosure

Item 1.01. Conflict Minerals Disclosure and Report, Exhibit

A copy of Mistras Group, Inc.’s Conflict Minerals Report is filed as Exhibit 1.01 hereto and a copy is available at the registrant’s website at http://investors.mistrasgroup.com/sec.cfm.

Item 1.02 Exhibits

The Conflict Mineral Report required by Items 1.01 and 1.02 is filed as Exhibit 1.01 hereto.

Section 2. – Resource Extraction Issuer Disclosure

Item 2.01. Resource Extraction Issuer Disclosure and Report

Not applicable.

Section 3 - Exhibits

Item 3.01 Exhibits

The following exhibit is filed as part of this report:

Exhibit 1.01 — Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


	MISTRAS GROUP, INC.


Date: May 27, 2026	By:	/s/ Eileen M. Coggins
		Name:	Eileen M. Coggins
		Title:	Executive Vice President, General Counsel and Secretary