Achieve Life Sciences plans to sell up to $50M in stock, with Jefferies as the sales agent. Shares dropped 3.6% in after-hours trading following a 7.4% gain earlier. The proceeds will fund the development of cytisinicline, a plant-based alkaloid for vaping addiction, which received FDA's 'breakthrough therapy' designation. Additional safety data request may delay approval until 2026. Achieve also announced a leadership change, with Richard Stewart replacing John Bencich as CEO.