Planet Fitness Faces Class Action After Marketing Pivot Triggers 31% Drop

The legal action, Matsunaga v. Planet Fitness, Inc., et al., follows a sharp 31% plummet in the company’s share price on May 7, 2026. On that day, Planet Fitness disclosed disappointing Q1 results and slashed its 2026 revenue growth guidance from 9% to 7%. During the subsequent earnings call, leadership conceded that their recent pivot toward “fitness-minded” consumers had backfired, straying too far from the brand's signature lighthearted, approachable tone.

Investors allege that the company misrepresented the efficacy of its “we are all strong on this Planet” campaign, which officials had previously touted as a key driver for growth. Instead, the strategy reportedly drove away casual gym-goers and beginners, forcing the company to pause planned price increases and revise its EBITDA growth projections downward from 10% to 6%. Shareholders seeking to join the class action have until September 14, 2026, to file for lead plaintiff status in the case, which is being handled by Bleichmar Fonti & Auld LLP.