TDG: Material agreement · New financial obligation

Item 1.01. Entry into a Material Definitive Agreement. Completed Financing Summary On September 28, 2026, TransDigm Inc. (the “Issuer”), a wholly-owned subsidiary of TransDigm Group Incorporated (“TransDigm Group”), completed the previously announced offering of $3,000 million of new 6.75% Senior Secured Notes maturing January 2035 (the “Notes”) at an issue price of 100.00% of the principal amount thereof. TransDigm Group intends to use the net proceeds of the offering of the Notes to repurchase the Issuer’s outstanding $2,100 million 6.75% Senior Secured Notes due 2028 pursuant to a concurrent tender offer that launched on September 14, 2026, as previously announced, and for general corporate purposes. Secured Notes Indenture The Notes and related guarantees were issued in a private offering to persons reasonably believed to be qualified institutional buyers in accordance with Rule 144A under the Securities Act of 1933 (the “Securities Act”) and to non-U.S. persons outside the United States under Regulation S under the Securities Act. The Notes were issued pursuant to an indenture, dated as of September 28, 2026 (the “Indenture”), among the Issuer, TransDigm Group and the subsidiaries of the Issuer party thereto, as guarantors, The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”) and US collateral agent, and The Bank of New York Mellon, as UK collateral agent. The Notes bear interest at the rate of 6.75% per annum, which accrues from September 28, 2026 and is payable in arrears on January 31 and July 31 of each year, commencing on January 31, 2027. The Notes mature on January 31, 2035, unless earlier redeemed or repurchased, and are subject to the terms and conditions set forth in the Indenture. The Issuer may redeem some or all of the Notes at t