Costco Wholesale Corp reported second-quarter financial results after market close Thursday. Here are the highlights. What Happened Costco reported second-quarter net sales of $50.9 billion, up 16.1 percent year-over-year. Total revenue of $51.9 billion in the quarter beat a consensus estimate of $51.4 billion, according to Benzinga Pro. Second-quarter revenue included $967 million from membership fees. Costco reported second-quarter earnings per share of $2.92, beating estimates of $2.73. Adjusted same-store sales were up 12.6 percent in the quarter. The U.S. and Canada regions had same-store sales growth of 11.3 percent and 12.4 percent, respectively, outpacing a 9.0 percent increase for the international stores. E-commerce same-store sales were up 12.6 percent. What’s Next Costco shared sales results for the month of February, which includes two weeks of the third quarter. Net sales for the month of February were $16.3 billion, up 15.9 percent year-over-year. Same-store sales grew 12.9 percent in the …