HNI Corp. announced sales for the third quarter of $565.7 million, a 3 percent increase from the prior year's quarter, and net income of $28.1 million, a 15 percent increase from the prior year's quarter. Net income per diluted share for the quarter was $0.61. HNI extimates sales growth to be flat to up 3 percent in the fourth quarter over the same period the prior year. See the full earnings report..