SemGroup (NYSE: SEMG) reported earnings on Feb. 28. Here are the numbers you need to know.

The 10-second takeaway
For the quarter ended Dec. 31 (Q4), SemGroup missed estimates on revenues and beat expectations on earnings per share.

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

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

Revenue details
SemGroup logged revenue of $315.8 million. The two analysts polled by S&P Capital IQ expected sales of $326.6 million on the same basis. GAAP reported sales were 5.7% lower than the prior-year quarter's $334.9 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 $0.42. The two earnings estimates compiled by S&P Capital IQ averaged $0.27 per share. Non-GAAP EPS of $0.42 for Q4 were 75% higher than the prior-year quarter's $0.24 per share. GAAP EPS were $0.50 for Q4 versus -$0.11 per share for the prior-year quarter.

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 12.8%, much worse than the prior-year quarter. Operating margin was 2.8%, 60 basis points worse than the prior-year quarter. Net margin was 6.7%, 660 basis points better than the prior-year quarter.

Looking ahead
Next quarter's average estimate for revenue is $335.1 million. On the bottom line, the average EPS estimate is $0.29.

Next year's average estimate for revenue is $1.39 billion. The average EPS estimate is $1.20.

Investor sentiment
The stock has a three-star rating (out of five) at Motley Fool CAPS, with 32 members out of 37 rating the stock outperform, and five members rating it underperform. Among 19 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 17 give SemGroup 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 SemGroup is buy, with an average price target of $46.00.

Is SemGroup the right energy stock for you? Read about a handful of timely, profit-producing plays on expensive crude in "3 Stocks for $100 Oil." Click here for instant access to this free report.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.