1 ADVANCED MAGNETICS, INC. Exhibit 11 - Statement re: Computation of Per Share Earnings Attached to and made part of Part II of Form 10-Q for the Three-Month Periods Ended December 31, 1996 and 1995 (unaudited) December 31 ------------------------- 1996 1995 --------- --------- Weighted average number of shares issued and outstanding 6,742,358 6,756,072 Common stock equivalents ............................... 90,817 -0- --------- --------- As adjusted ............................................ 6,833,175 6,756,072 ========= ========= As a result of a net loss in the quarter ended December 31, 1995, common stock equivalents are not included in the calculation of weighted average shares when their effect would be antidilutive. Page 14 of 14