ISSAQUAH, Wash. (AP) — Warehouse retail chain Costco Wholesale says its fourth-quarter earnings rose slightly from a year ago, its profits weighed by wage premiums paid to employees during the pandemic. In a quarter during which Costco saw a surge of online shopping, the company based in Issaquah, Washington, said it earned $951 million, or $2.14 per share. That’s compared to a profit of $931 million, or $2.10 per share, in the same period a year earlier. But the results were below analysts’ expectations, pushing the Costco’s stock down about 2% in after-hours trading.