The publicly traded issuer is TransDigm Group Incorporated. It conducts the business through wholly owned TransDigm Inc. and a decentralized network of operating units. TDG equity and SEC financial reporting belong to the parent, not the operating subsidiary.
TransDigm owns aerospace suppliers that make specialized parts and systems used across commercial and military aircraft. The portfolio runs from actuators, valves, pumps and power-control hardware to cockpit displays, antennas, restraints, parachutes, hoists, test equipment and microwave components. Many individual businesses retain their own names, management teams and customer relationships.
The economic engine is not simply selling parts for new aircraft. Once a component is designed, certified and installed on a platform, operators may need replacements, repairs and upgrades for decades. TransDigm estimated that approximately 90% of fiscal 2025 sales came from proprietary products and approximately 55% came from aftermarket demand. A typical aircraft platform may be produced for 20 to 30 years and remain in service for another 25 to 30 years.
The company combines decentralized operations with centralized capital allocation. Management seeks niche suppliers with proprietary content, recurring aftermarket sales and room to improve price, cost or new-business performance. TransDigm itself describes its acquisition return objective as private-equity-like, but it holds and operates the acquired businesses rather than managing a conventional buyout fund.
Mechanical and electromechanical actuators, ignition systems, pumps, valves, electric motors, generators, batteries, chargers, databus controls, sensors, relays, hoists, winches, cargo-handling equipment and microwave electronics. Fiscal 2025 segment sales were $4.559 billion.
Latches, locking devices, rods, connectors, seals, cockpit-security systems, displays, audio and antenna equipment, lavatory components, restraints, interior surfaces, insulation, lighting, parachutes and specialized test systems. Fiscal 2025 segment sales were $4.112 billion.
Raptor Scientific and Calspan add force, torque, pressure and mass-property measurement, wind-tunnel services, flight testing and instrumentation. These capabilities support qualification and verification work where inaccurate measurement can compromise an aircraft, weapon, payload or test campaign.
Jet Parts Engineering designs proprietary Parts Manufacturer Approval alternatives and repairs, while Victor Sierra distributes proprietary replacement parts for general and business aviation. These businesses expand TransDigm beyond original-equipment positions into certified alternatives for installed fleets.
The smaller Non-aviation segment supplies restraints, turbine controls, refueling equipment and actuators for ground, energy and space applications. TransDigm operating units also provide specialized equipment used in satellite and space-science systems.
TransDigm began in 1993 and built its portfolio through repeated acquisitions of specialized aerospace-component manufacturers. TransDigm Group became the listed parent in 2006. By September 2025 the company said it had acquired 95 businesses and product lines since inception. The strategy is consistent: acquire proprietary, high-content products tied to long-lived platforms then apply operating discipline and capital to the installed base.
The recent acquisition cycle has added defense test and measurement, sensing, actuation and commercial aftermarket parts. It has also exposed a boundary. TransDigm abandoned Stellant Systems in July 2026 after the U.S. Department of Justice decided to challenge a combination that it said would eliminate competition for components supporting the Aegis Combat System and F-16.
| Date | Transaction | Value | Strategic effect |
|---|---|---|---|
| 31-JUL-2024 | Raptor Scientific · Closed | Approx. $647M cash | Added complex aerospace and defense test and measurement to Airframe. |
| 01-JUL-2025 | Servotronics · Closed | Approx. $133M cash | Added servo controls and advanced aerospace components to Power & Control. |
| 06-OCT-2025 | Simmonds Precision · Closed | Approx. $757M cash | Added fuel, proximity and structural-health sensing from RTX. |
| 07-APR-2026 | Jet Parts Engineering and Victor Sierra · Closed | Approx. $2.2B cash | Expanded proprietary commercial aftermarket parts, repairs and distribution. |
| 13-JUL-2026 | Stellant Systems · Withdrawn | Proposed $960M cash | Regulatory challenge blocked further concentration in critical defense electronics. |
| 27-JUL-2026 | Prince & Izant · Agreement | Approx. $1.066B cash | Pending purchase of brazing alloys and specialty metal components for aerospace, defense and turbine markets. |
Fiscal 2025 revenue reached $8.831 billion, up 11.2%. Organic growth contributed $615 million and acquisitions contributed $276 million to the year-over-year increase. Defense was the largest disclosed channel at $3.761 billion, or 42.6% of sales. Commercial and non-aerospace aftermarket generated $2.804 billion, commercial and non-aerospace original equipment generated $2.106 billion and Non-aviation generated $160 million.
| Fiscal 2025 channel | Revenue | Share of sales | Primary driver |
|---|---|---|---|
| Defense | $3.761B | 42.6% | U.S. and friendly-foreign procurement, defense OEM production and military aftermarket demand. |
| Commercial and non-aerospace aftermarket | $2.804B | 31.8% | Flight hours, fleet utilization, repairs and replacement consumption. |
| Commercial and non-aerospace OEM | $2.106B | 23.8% | Boeing, Airbus and business-aviation production rates. |
| Non-aviation | $160M | 1.8% | Ground vehicles, energy, industrial and space applications. |
For the quarter ended June 27, 2026, revenue rose 23% to $2.741 billion and organic growth was 13%. Commercial aftermarket grew 17% and management said all three major channels produced double-digit growth. Acquisitions increase reported sales but initially diluted the company-reported EBITDA As Defined margin, which declined to 52.8% from 54.4% a year earlier.
Management said defense built "sizable backlog" during fiscal Q3 2026, but TransDigm does not publish a consolidated corporate backlog value or separate funded from unfunded orders. The profile therefore treats backlog as undisclosed.
| Filed | Form | Description | Link |
|---|---|---|---|
| 04-AUG-2026 | 10-Q | Quarter ended 27-JUN-2026; latest balance sheet, acquisitions, debt and operating results. | View → |
| 04-AUG-2026 | 8-K | Fiscal Q3 results and raised fiscal 2026 guidance. | View → |
| 27-JUL-2026 | 8-K | Definitive agreement to acquire Prince & Izant. | View → |
| 24-JUL-2026 | 8-K | Appointment of Irina Krasik to the board. | View → |
| 13-JUL-2026 | 8-K | Withdrawal from the proposed Stellant Systems acquisition. | View → |
| 07-APR-2026 | 8-K | Completion of Jet Parts Engineering and Victor Sierra purchase. | View → |
| 22-JAN-2026 | DEF 14A | 2026 proxy, executive compensation, ownership and director nominees. | View → |
| 12-NOV-2025 | 10-K | Fiscal 2025 annual report. | View → |
Government awards often name a TransDigm operating unit rather than the parent. The entries below are attributable subsidiary awards found in official daily contract notices. They are not a consolidated company backlog and should not be added together as a measure of total defense exposure.
| Date | Awarding Body | Program / Scope | Value | Status |
|---|---|---|---|---|
| 23-FEB-2026 | U.S. Army Contracting Command, Natick | Airborne Systems North America · T-11 parachute production under W911QY-19-D-0045; firm-fixed-price action with work through 31-AUG-2027. | $23.994M action | AWARDED |
| 17-MAR-2025 | Defense Logistics Agency Aviation | Breeze-Eastern · Aircraft mount winches; five-year firm-fixed-price requirements contract SPRRA1-25-D-0009. | Est. $63.106M | AWARDED |
| 17-MAR-2025 | U.S. Army Contracting Command, Aberdeen | Airborne Systems North America · T-11 parachute production, contract W911QY-25-F-A015. | $11.376M | AWARDED |
| 02-FEB-2024 | Defense Logistics Agency Land and Maritime | Skurka Aerospace · Direct-current motors; sole-source, three-year IDIQ contract SPRDL1-24-D-0016. | Max. $21.293M | AWARDED |
The latest material filings located through 22-AUG-2026 were option exercises and associated sales. An option exercise is not an open-market purchase and is labeled separately.
| Date | Insider / Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| 20-JUL-2026 | W. Nicholas Howley · Chairman | SALE · 10b5-1 | 10,132 | $1,216.08 avg. | Approx. $12.32M |
| 20-JUL-2026 | W. Nicholas Howley · Chairman | OPTION EXERCISE | 10,132 | $66.47 | $673,474 cost |
| 18-JUN-2026 | W. Nicholas Howley · Chairman | SALE | 10,132 | $1,319.55 avg. | Approx. $13.37M |
| 05-FEB-2026 | Sarah L. Wynne · Chief Financial Officer | OPTION EXERCISE | 1,494 | $559.78 | $836,311 cost |
TransDigm's advantage is ownership of small but difficult-to-replace components embedded across long-lived fleets. That produces exceptional margins and recurring cash flow, but it also creates a procurement paradox: the same certification barriers and sole-source positions that protect earnings can reduce government negotiating leverage and invite regulatory intervention.
The near-term operating picture remains strong. Management raised fiscal 2026 guidance after the June quarter, with revenue expected at $10.47 billion to $10.55 billion and EBITDA As Defined at $5.49 billion to $5.55 billion. The outlook assumes mid-teens commercial OEM growth, low-double-digit commercial aftermarket growth and high-single-digit to low-double-digit defense growth. Prince & Izant was excluded because the acquisition had not closed.
| Fiscal 2026 guidance · 04-AUG-2026 | Range | Midpoint change from prior guide |
|---|---|---|
| Net sales | $10.470B-$10.550B | +$150M |
| GAAP net income | $2.102B-$2.150B | +$60M |
| GAAP EPS | $35.38-$36.21 | +$1.20 |
| EBITDA As Defined | $5.490B-$5.550B | +$100M |
| Adjusted EPS | $40.62-$41.46 | +$1.52 |
The strategic watchpoint is capital allocation. At June 27, TransDigm carried $32.621 billion of long-term debt and $725 million of short-term receivables-facility borrowings against $2.773 billion of cash. The company can use cash generation, additional borrowing, share repurchases, special dividends or acquisitions to drive equity returns. That flexibility is powerful while credit markets and aerospace demand remain supportive, but it magnifies refinancing and integration risk when conditions weaken.
Competition is product-lane specific. A small operating unit may face a different rival on each aircraft subsystem, and a company can be TransDigm's customer, supplier, acquisition counterparty and competitor in different lanes.
Aircraft certification, engineering documentation, tooling and qualification make replacement difficult. If only one approved source remains for a low-volume part, recreating competition can cost more and take longer than buying the part. This dynamic is strongest in aging fleets and the military aftermarket.
Approximately 90% proprietary sales spread exposure across thousands of products and nearly every commercial and military aircraft in service. No customer represented more than 10% of fiscal 2025 sales, although the top ten collectively represented approximately 40%.
Aftermarket demand follows flight hours and installed platforms rather than new-aircraft deliveries alone. It has historically produced higher gross profit and more stable revenue than original-equipment sales.
TransDigm has repeatedly bought small specialized suppliers, preserved operating-unit accountability and applied three value drivers: profitable new business, cost improvement and pricing tied to product value. The model is difficult to copy without disciplined engineering due diligence, leverage capacity and tolerance for regulatory scrutiny.
Long-term debt reached $32.621 billion at June 27, 2026. Interest expense was $514 million in the latest quarter. Acquisition financing, special dividends and repurchases can increase equity returns but reduce resilience if rates rise, credit markets close or aerospace demand contracts.
A 2021 Department of Defense inspector general audit concluded that TransDigm earned at least $20.8 million of excess profit on 105 spare parts across 150 contracts reviewed from January 2017 through June 2019. The audit said more than 95% of the relevant contracts were below the Truth in Negotiations Act threshold and found that existing rules did not compel cost-data disclosure. The finding did not allege fraud or that the awards violated then-applicable procurement rules. TransDigm separately returned $16.1 million after the earlier 2019 audit. The later $20.8 million refund recommendation remained an oversight issue in the sources reviewed.
The Justice Department's Stellant challenge shows that an acquisition can be blocked when it would remove the remaining competitor for critical defense components. Future deals involving sole or limited-source military hardware face heightened review, delay and opportunity cost.
No single customer exceeded 10% of fiscal 2025 sales, but the top ten represented approximately 40%. Boeing and Airbus production, airline flight hours, defense appropriations and repair demand remain important. Government contracts may be terminated for convenience and fixed-price awards expose operating units to cost inflation.
The portfolio depends on correct underwriting and continued execution after closing. Jet Parts Engineering and Victor Sierra added $2.2 billion of purchase cost and approximately $280 million of calendar 2025 revenue. Paying for long-duration aftermarket cash flow leaves limited room for integration errors, lost certifications or weaker-than-expected demand.
Industry: aerospace and defense concentration is high. Customers: no customer above 10%, top ten approximately 40%. Channel: fiscal 2025 defense revenue was 42.6%, while direct U.S. government sales were only a subset. Products: approximately 90% proprietary. Balance sheet: $32.621 billion long-term debt versus $2.773 billion cash at 27-JUN-2026.