The lawsuit, filed in the U.S. District Court for the District of New Hampshire, claims Planet Fitness and its senior executives misrepresented the impact of their "We Are All Strong on This Planet" initiative. While leadership publicly touted the campaign's resonance, the complaint alleges it shifted too far away from the brand's traditional "Judgement Free Zone" appeal, effectively alienating the casual gym-goers essential to the company's performance.

The market reacted sharply on May 7, 2026, when the firm reported disappointing Q1 results and slashed its revenue growth guidance from 9% to 7%. Shares plummeted from $63.96 to $44.01, wiping out significant value in a single session. During the subsequent earnings call, management admitted the marketing pivot may have been too aggressive, leading to the suspension of planned price increases. Investors seeking to participate in the case have until September 14, 2026, to apply for lead plaintiff status in the matter of Matsunaga v. Planet Fitness, Inc.