X0203

    
        0001354457
        The Nasdaq Stock Market LLC
    

    
        0001412067
        Cascadian Therapeutics, Inc.
        001-33882
        

            2601 4th Avenue
            Suite 500
            Seattle
            WA
            WASHINGTON
            98121
        
        206 801-2100
    

    Common Stock

    17 CFR 240.12d2-2(a)(3)

    
        Tara Petta
        Director
        2018-03-09
    

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