Inovio Pharmaceuticals (INO) has 1 split in our INO split history database. The split for INO took place on June 06, 2014. This was a 1 for 4 reverse split, meaning for each 4 shares of INO owned pre-split, the shareholder now owned 1 share. For example, a 1000 share position pre-split, became a 250 share position following the split.