Westinghouse Air Brake Technologies (NYSE: WAB) reported earnings on May 3. Here are the numbers you need to know.

The 10-second takeaway
For the quarter ended March 31 (Q1), Westinghouse Air Brake Technologies beat expectations on revenues and beat slightly on earnings per share.

Compared to the prior-year quarter, revenue grew significantly and GAAP earnings per share grew significantly.

Gross margins dropped, operating margins increased, net margins expanded.

Revenue details
Westinghouse Air Brake Technologies chalked up revenue of $583.3 million. The six analysts polled by S&P Capital IQ expected revenue of $541.6 million on the same basis. GAAP reported sales were 28% higher than the prior-year quarter's $455.3 million.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
EPS came in at $1.22. The six earnings estimates compiled by S&P Capital IQ anticipated $1.20 per share. GAAP EPS of $1.22 for Q1 were 44% higher than the prior-year quarter's $0.85 per share.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Margin details
For the quarter, gross margin was 29.0%, 30 basis points worse than the prior-year quarter. Operating margin was 16.6%, 200 basis points better than the prior-year quarter. Net margin was 10.2%, 120 basis points better than the prior-year quarter.

Looking ahead
Next quarter's average estimate for revenue is $577.0 million. On the bottom line, the average EPS estimate is $1.22.

Next year's average estimate for revenue is $2.29 billion. The average EPS estimate is $4.86.

Investor sentiment
The stock has a four-star rating (out of five) at Motley Fool CAPS, with 413 members out of 425 rating the stock outperform, and 12 members rating it underperform. Among 98 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 96 give Westinghouse Air Brake Technologies a green thumbs-up, and two give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Westinghouse Air Brake Technologies is outperform, with an average price target of $83.75.