TransDigm Acquires SEI Industries LTD.

TransDigm Acquires Jet Parts Engineering and Victor Sierra Aviation Holdings

January 19, 2026

Aerospace & Defense

TransDigm Group Incorporated has agreed to acquire Jet Parts Engineering (JPE) and Victor Sierra Aviation Holdings (VSA), both portfolio companies of Vance Street Capital, for approximately $2.2 billion in cash. The transaction expands TransDigm’s presence in the commercial aerospace aftermarket by adding engineered PMA/OEM-alternative parts, repair capabilities and distribution for commercial, regional, cargo, and business aviation customers.

TransDigm Group Inc Acquires Wyvern Technologies, Inc.

December 5, 2024

Aerospace & Defense

TransDigm Group Inc. has acquired Wyvern Technologies, Inc. in a deal announced December 5, 2024. The acquisition is intended to strengthen TransDigm’s aerospace and defense electronics capabilities and bolster its lifecycle sustainment offerings for military and defense customers.

TransDigm Acquires DART Aerospace for Approximately $360M

March 14, 2022

Aerospace & Defense

TransDigm Group Incorporated agreed to acquire DART Aerospace, a Montreal-based manufacturer of helicopter mission equipment, from Greenbriar Equity Group and First Aviation Services for approximately $360 million in cash. DART, which generates roughly $100 million in pro forma 2022 revenue and employs about 400 people across facilities in Canada, the U.S. and Mexico, was acquired to expand TransDigm's proprietary product and aftermarket capabilities; the deal is expected to close in Q2 2022 subject to customary approvals.

TransDigm Acquires CPI's Electron Device Business

June 6, 2024

Aerospace & Defense

TransDigm Group Inc. completed the acquisition of the Electron Device Business (EDB) of Communications & Power Industries (CPI) from an affiliate of The Resolute Fund V (TJC) for approximately $1.385 billion in cash. The business, a leading manufacturer of high-power RF/microwave components with strong aftermarket revenue, generated about $300 million in revenue for FY ended September 29, 2023 and employs ~900 people across U.S. and U.K. facilities.

TransDigm Acquires Simmonds Precision Products from RTX

October 6, 2025

Aerospace & Defense

TransDigm Group completed its acquisition of the Simmonds Precision Products business of Goodrich from RTX Corporation for approximately $765 million in cash. Simmonds, headquartered in Vergennes, Vermont, is a designer and manufacturer of fuel & proximity sensing and structural health monitoring solutions for aerospace and defense, is expected to generate about $350 million in 2025 revenue and employs roughly 900 people. TransDigm financed the acquisition with cash on hand.

Quad-C Management Acquires SEI Group LLC from Narrow Gauge Capital

March 15, 2021

Building Products

Quad-C Management has acquired SEI Group LLC, a distributor and installer of residential insulation and specialty building products based in Atlanta, Georgia, from Narrow Gauge Capital. Quad-C will partner with newly appointed executives and the existing SEI management team to pursue an aggressive consolidation strategy and national growth for the platform; terms were not disclosed.