The information contained in these documents give effect to the 3-for-2 stock split in March 1983 and the 2-for-1 stock splits in February 1986, February 1987, November 1999, October 2000, and May 2004.
Genentech Historical Prices:
NYSE: GNE, 1988 - June 15, 1999 (182K/PDF)
NYSE: DNA, July 20, 1999 - March 26, 2009 (169K/PDF)