Aerospace and defense company Rocket Lab (NASDAQ: RKLB) reported Q1 CY2026 results topping the market’s revenue expectations, with sales up 63.5% year on year to $200.3 million. On top of that, next quarter’s revenue guidance ($232.5 million at the midpoint) was surprisingly good and 12% above what analysts were expecting. Its GAAP loss of $0.07 per share was in line with analysts’ consensus estimates.

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Company Overview

Becoming the first private company in the Southern Hemisphere to reach space, Rocket Lab (NASDAQ: RKLB) offers rockets designed for launching small satellites.

Revenue Growth

A company’s long-term sales performance can indicate its overall quality. Any business can have short-term success, but a top-tier one grows for years. Luckily, Rocket Lab’s sales grew at an incredible 67.2% compounded annual growth rate over the last five years. Its growth beat the average industrials company and shows its offerings resonate with customers, a helpful starting point for our analysis.

Long-term growth is the most important, but within industrials, a half-decade historical view may miss new industry trends or demand cycles. Rocket Lab’s annualized revenue growth of 55.1% over the last two years is below its five-year trend, but we still think the results suggest healthy demand.

This quarter, Rocket Lab reported magnificent year-on-year revenue growth of 63.5%, and its $200.3 million of revenue beat Wall Street’s estimates by 4.9%. Company management is currently guiding for a 60.9% year-on-year increase in sales next quarter.

Looking further ahead, sell-side analysts expect revenue to grow 35.4% over the next 12 months, a deceleration versus the last two years. Still, this projection is commendable and suggests the market sees 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.

Rocket Lab’s high expenses have contributed to an average operating margin of negative 50.5% over the last five years. Unprofitable industrials companies require extra attention because they could get caught swimming naked when the tide goes out.

On the plus side, Rocket Lab’s operating margin rose over the last five years, as its sales growth gave it operating leverage. Still, it will take much more for the company to reach long-term profitability.

Rocket Lab’s operating margin was negative 27.9% this quarter.

Earnings Per Share

We track the long-term change in earnings per share (EPS) for the same reason as long-term revenue growth. Compared to revenue, however, EPS highlights whether a company’s growth is profitable.

Although Rocket Lab’s full-year earnings are still negative, it reduced its losses and improved its EPS by 23.4% annually over the last five years. The next few quarters will be critical for assessing its long-term profitability. We hope to see an inflection point soon.

Like with revenue, we analyze EPS over a shorter period to see if we are missing a change in the business.

For Rocket Lab, its two-year annual EPS growth of 6.6% was lower than its five-year trend. This wasn’t great, but at least the company was successful in other measures of financial health.

In Q1, Rocket Lab reported EPS of negative $0.07, up from negative $0.12 in the same quarter last year. This print easily cleared analysts’ estimates, and shareholders should be content with the results. Over the next 12 months, Wall Street expects Rocket Lab to improve its earnings losses. Analysts forecast its full-year EPS of negative $0.33 will advance to negative $0.19.

Key Takeaways from Rocket Lab’s Q1 Results

We were impressed by Rocket Lab’s optimistic EBITDA guidance for next quarter, which blew past analysts’ expectations. We were also excited its EBITDA outperformed Wall Street’s estimates by a wide margin. Zooming out, we think this was a good print with some key areas of upside. The stock traded up 4.8% to $82.45 immediately following the results.

Rocket Lab put up rock-solid earnings, but one quarter doesn’t necessarily make the stock a buy. Let’s see if this is a good investment. What happened in the latest quarter matters, but not as much as longer-term business quality and valuation, when deciding whether to invest in this stock. We cover that in our actionable full research report which you can read here (it’s free).