 National HealthCare Co. NYSEAMERICAN:NHC announced a quarterly dividend on Tuesday, May 12th, Wall Street Journal reports. Stockholders of record on Tuesday, June 30th will be paid a dividend of 0.52 per share on Monday, August 3rd. This represents a 2.08 annualized dividend and a dividend yield of 3.49. The ex-dividend date is Monday, June 29th. ... 