WeightWatchers has announced the sudden departure of its CEO, Sima Sistani, who has led the company for over two years. Sistani's exit comes as WeightWatchers faces challenges in the evolving weight loss market, particularly the growing impact of anti-obesity drugs like Ozempic, which she had previously embraced. In light of this change, Tara Comonte has been appointed as the interim CEO. The company's stock experienced a rise following the announcement, indicating a potentially positive reception to the leadership change amid ongoing struggles in the industry.