Dividend History (historical document, 1972 through present (PDF)

PPG Stock Split History – Since 1968

June 12, 2015 2-for-1 split
June 10, 1994 2-for-1 split
March 12, 1987 2-for-1 split
September 12, 1983 2-for-1 split
July 22, 1977 3-for-2 split
December 27, 1968 2-for-1 split