1 EXHIBIT 11.1 PROTEIN DESIGN LABS, INC. STATEMENT OF COMPUTATION OF EARNINGS PER SHARE (In thousands except per share amounts) Exhibit 11.1 Three months ended March 31, 1997 1996 ----------- ----------- Computation of common and common equivalent shares outstanding: Weighted average common shares outstanding 16,000 15,506 Weighted average shares outstanding assuming conversion of preferred stock -- -- ----------- ----------- 16,000 15,506 ----------- ----------- Total weighted average common and common equivalent shares outstanding 16,000 15,506 =========== =========== Net loss $ (4,089) $ (2,200) =========== =========== Loss per share $ (0.26) $ (0.14) =========== ===========