WD-40 Company reported fourth quarter net sales rose 12% to $90.7 million. The quarter ended Aug. 31, 2011. Year-to-date net sales increased 5% to $336.4 million—a record for the company. Net income for the fourth quarter jumped 48% to $10.2 million. Year-to-date net income stayed almost flat, rising 1% to $36.4 million. Fourth quarter multi-purpose maintenance products sales, which include WD-40, 3-in-One and Blue Work rose 16% to $74.1 million and increased 8% to $278.8 million year-to-d...