Aerospace and defense company TransDigm (NYSE: TDG) beat Wall Street’s revenue expectations in Q1 CY2026, with sales up 18.3% year on year to $2.54 billion. The company’s full-year revenue guidance of $10.36 billion at the midpoint came in 2.6% above analysts’ estimates. Its non-GAAP profit of $9.85 per share was 4.3% above analysts’ consensus estimates.

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"We are pleased with our team's performance and operating results for the second quarter," stated Mike Lisman, TransDigm Group's CEO.

Company Overview

Supplying parts for nearly all aircraft currently in service, TransDigm (NYSE: TDG) develops and manufactures components and systems for military and commercial aviation.

Revenue Growth

Reviewing a company’s long-term sales performance reveals insights into its quality. Any business can put up a good quarter or two, but many enduring ones grow for years. Over the last five years, TransDigm grew its sales at an incredible 16.1% compounded annual growth rate. Its growth surpassed the average industrials company and shows its offerings resonate with customers, a great starting point for our analysis.

We at StockStory place the most emphasis on long-term growth, but within industrials, a half-decade historical view may miss cycles, industry trends, or a company capitalizing on catalysts such as a new contract win or a successful product line. TransDigm’s annualized revenue growth of 14.1% over the last two years is below its five-year trend, but we still think the results suggest healthy demand.

We can dig further into the company’s sales dynamics by analyzing its organic revenue, which strips out one-time events like acquisitions and currency fluctuations that don’t accurately reflect its fundamentals. Over the last two years, TransDigm’s organic revenue averaged 9.5% year-on-year growth. Because this number is lower than its two-year revenue growth, we can see that some mixture of acquisitions and foreign exchange rates boosted its headline results.

This quarter, TransDigm reported year-on-year revenue growth of 18.3%, and its $2.54 billion of revenue exceeded Wall Street’s estimates by 3.3%.

Looking ahead, sell-side analysts expect revenue to grow 11.9% over the next 12 months, a slight deceleration versus the last two years. Still, this projection is noteworthy and indicates the market is baking in success for its products and services.

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Operating Margin

Operating margin is one of the best measures of profitability because it tells us how much money a company takes home after procuring and manufacturing its products, marketing and selling those products, and most importantly, keeping them relevant through research and development.

TransDigm has been a well-oiled machine over the last five years. It demonstrated elite profitability for an industrials business, boasting an average operating margin of 44.4%.

Analyzing the trend in its profitability, TransDigm’s operating margin rose by 7.5 percentage points over the last five years, as its sales growth gave it immense operating leverage.

This quarter, TransDigm generated an operating margin profit margin of 46.3%, in line with the same quarter last year. This indicates the company’s overall cost structure has been relatively stable.

Earnings Per Share

Revenue trends explain a company’s historical growth, but the long-term change in earnings per share (EPS) points to the profitability of that growth – for example, a company could inflate its sales through excessive spending on advertising and promotions.

TransDigm’s EPS grew at 33.8% compounded annual growth rate over the last five years, higher than its 16.1% annualized revenue growth. This tells us the company became more profitable on a per-share basis as it expanded.

We can take a deeper look into TransDigm’s earnings to better understand the drivers of its performance. As we mentioned earlier, TransDigm’s operating margin was flat this quarter but expanded by 7.5 percentage points over the last five years. This was the most relevant factor (aside from the revenue impact) behind its higher earnings; interest expenses and taxes can also affect EPS but don’t tell us as much about a company’s fundamentals.

Like with revenue, we analyze EPS over a more recent period because it can provide insight into an emerging theme or development for the business.

For TransDigm, its two-year annual EPS growth of 12.5% was lower than its five-year trend. We still think its growth was good and hope it can accelerate in the future.

In Q1, TransDigm reported adjusted EPS of $9.85, up from $9.11 in the same quarter last year. This print beat analysts’ estimates by 4.3%. Over the next 12 months, Wall Street expects TransDigm’s full-year EPS of $38.50 to grow 10.6%.

Key Takeaways from TransDigm’s Q1 Results

We enjoyed seeing TransDigm beat analysts’ revenue expectations this quarter. We were also glad its full-year EBITDA guidance exceeded Wall Street’s estimates. Full-year guidance was also raised for revenue and EPS. Zooming out, we think this quarter featured some important positives. The stock traded up 4.6% to $1,202 immediately after reporting.

TransDigm had an encouraging quarter, but one earnings result doesn’t necessarily make the stock a buy. Let’s see if this is a good investment. If you’re making that decision, you should consider the bigger picture of valuation, business qualities, as well as the latest earnings. We cover that in our actionable full research report which you can read here (it’s free).