0000950123-04-008811 8-K 2 20040726 12 5 7 9 20040727 REGENERON PHARMACEUTICALS INC 0000872589 2834 133444607 NY 1231 8-K 34 000-19034 04932323 777 OLD SAW MILL RIVER RD TARRYTOWN NY 10591-6707 9143477000 8-K 1 y99444e8vk.htm REGENERON PHARMACEUTICALS, INC. EX-99.A 2 y99444exv99wa.htm PRESS RELEASE