X0202 4 2006-05-16 0 0001125001 IOMAI CORP IOMI 0001342821 Himawan Jeff ESSEX WOODLANDS HEALTH VENTURES 435 TASSO STREET, SUITE 305 PALO ALTO CA 94301 1 0 0 0 Stock Option Grant 4.70 2006-05-16 4 A 0 10000 4.70 D 2016-05-16 Common Stock 10000 10000 D The option is not currently exercisable as to any shares. The option will become exercisable as to 2,500 shares in one installment on May 16, 2007 and thereafter will vest with respect to the remaining 7,500 shares in three equal installments on an annual basis until May 16, 2010. Russell P. Wilson, Attorney-In-Fact 2006-05-18