Shares of Athira Pharma (NSDQ:ATHA) jumped 9.35% in mid-day trading after the company announced the resignation of embattled CEO Leen Kawas. Kawas will also give up her seat on the Bothell, Washington–based company’s board. Facing allegations that she doctored a series of images in research papers, Leen Kawas was placed on leave in June. Several…