TransDigm Group INC — M&A Activity 2026

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 27, 2026

TransDigm Group Incorporated

(Exact name of registrant as specified in its charter)

( 216 ) 706-2960

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging Growth Company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01. Other Events.

On July 27, 2026, TransDigm Group Incorporated (“TransDigm Group”) issued a press release (the “Press Release”) announcing its definitive agreement to acquire Prince & Izant (“P&I” or “the Company”), a portfolio company of Industrial Growth Partners, for approximately $1.066 billion in cash, including certain tax benefits. A copy of this Press Release is attached to this Current Report on Form 8-K as Exhibit 99.1 and is incorporated herein by reference.

Prince & Izant, headquartered in Cleveland, Ohio, is a leading global designer and manufacturer of highly engineered brazing alloys and specialty metal components used across a range of advanced performance and high cost-of-failure applications. The Company primarily supports the aerospace and defense, aeroderivative turbine, and transportation end markets. The Company’s products are highly proprietary in nature and support end customers through P&I’s advanced metallurgy, precise chemistry requirements, and deep formulation expertise which are critical to supporting the evolving performance requirements in the markets which it serves. The Company derives the majority of its revenue from the aftermarket and supports a large installed base globally. P&I is expected to generate approximately $360 million in revenue for the calendar year ending December 31, 2026. The Company has manufacturing locations in Cleveland, Ohio; Tinley Park, Illinois; Franksville, Wisconsin; and Bay Shore, New York. The Company employs approximately 220 people. The acquisition is subject to regulatory approvals in the United States and customary closing conditions.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

SIGNATURE

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.

Dated: July 27, 2026