X0305 4 2012-05-24 0 0001142596 NUVASIVE INC NUVA 0001222606 HOWE LESLEY H 7475 LUSK BLVD. SAN DIEGO CA 92121 1 0 0 0 Common Stock 2012-05-24 4 A 0 2833 0 A 2833 D Represents an award of Restricted Stock Units with monthly vesting over a twelve month period starting on May 24, 2012. Receipt of all shares of the underlying stock is deferred for three years from May 24, 2012 or until retirement from Issuer's Board of Directors, whichever occurs first. /s/ Jason M. Hannon, Attorney-In-Fact 2012-05-25