A securities fraud class action lawsuit has been filed on behalf of Planet Fitness investors after its stock dropped over 31% relating to Planet Fitness's failed marketing campaign that alienated the company's core market, casual gym-goers, and led to disappointing membership growth during the key Q1 sign-up period.

NEW YORK, July 15, 2026 /PRNewswire/ -- Leading securities law firm Bleichmar Fonti & Auld LLP announces that a class action lawsuit has been filed against Planet Fitness, Inc. (NYSE: PLNT) and certain of the Company's senior executives for securities fraud after its significant stock drop resulting from potential violations of the federal securities laws.

If you invested in Planet Fitness, you are encouraged to obtain additional information by visiting: https://www.bfalaw.com/cases/planet-fitness-class-action-lawsuit.

Key Details of the Planet Fitness ($PLNT) Class Action Lawsuit:

• Lead Plaintiff Deadline: September 14, 2026 
• Alleged Misconduct: Securities fraud relating to Planet Fitness's failed marketing campaign that led to disappointing membership growth during the key Q1 sign-up period
• Stock Drop: May 7, 2026 – 31% Stock Drop
• Court: U.S. District Court for the District of New Hampshire
• Take Action: Contact BFA Law to discuss your rights

Why is Planet Fitness Being Sued for Securities Fraud?

Planet Fitness is a large franchisor and operator of fitness centers across the United States. The company aims to offer a fitness experience in a non-intimidating environment, which it calls the Judgement Free Zone.

The complaint alleges that throughout the relevant period, Planet Fitness misrepresented the success of its marketing campaign to focus on "fitness-minded" members. For instance, Planet Fitness told investors that it "continue[d] to lean into our 'we are all strong on this Planet' campaign." Planet Fitness also stated that "[b]ecause this campaign resonated so strongly last year, we extended it into 2026."

In truth, Planet Fitness's marketing campaign alienated fitness beginners and more casual gym-goers, which traditionally had been the company's focus and would be forced to restructure its marketing strategy. This caused the company to halt planned price increases which its sales projections were premised on.

Why did Planet Fitness's Stock Drop? 

On May 7, 2026, Planet Fitness released its Q1 2026 financial results. The company announced disappointing membership growth and cut 2026 revenue growth guidance from approximately 9% to about 7% and adjusted EBITDA growth guidance from roughly 10% to approximately 6%. During the same-day earnings call, the company stated that its marketing "may have pivoted too far" as the company "shift[ed] from [its] lighthearted approachable tone" to one that "increased penetration with the fitness-minded." As such it announced that, "we are pausing the planned national Black Card price increase pending a broader pricing review."

This news caused the price of Planet Fitness stock to decline $19.95 per share, or 31%, from a closing price of $63.96 per share on May 6, 2026, to $44.01 per share on May 7, 2026.

Click here for more information: https://www.bfalaw.com/cases/planet-fitness-class-action-lawsuit.

What Can You Do?

If you invested in Planet Fitness, you may have legal options and are encouraged to submit your information to the firm.

All representation is on a contingency fee basis; there is no cost to you. Shareholders are not responsible for any court costs or expenses of litigation. The firm will seek court approval for any potential fees and expenses.

Submit your information by visiting:

https://www.bfalaw.com/cases/planet-fitness-class-action-lawsuit

Why Bleichmar Fonti & Auld LLP?

BFA is a leading international law firm representing plaintiffs in securities class actions and shareholder litigation. It has been named a top plaintiff law firm by Chambers USA, The Legal 500, and ISS SCAS, and its attorneys have been named "Elite Trial Lawyers" by the National Law Journal, "Litigation Stars" by Benchmark Litigation, among the top "500 Leading Plaintiff Financial Lawyers" by Lawdragon, "Titans of the Plaintiffs' Bar" by Law360 and "SuperLawyers" by Thomson Reuters.

Most recently, The Legal 500 awarded BFA the most client satisfaction accolades of any plaintiff's securities litigation law firm, with clients noting: "[t]here is no better service provider in the practice area," "[t]he interest of the client is always front and center," and "[t]here isn't a better firm in this space." One testimonial described the firm as "nimble and entrepreneurial," with a "relentless focus on adding value for clients."

Among its recent notable successes, BFA recovered over $900 million in value from Tesla, Inc.'s Board of Directors, as well as $420 million from Teva Pharmaceutical Ind. Ltd.

For more information about BFA and its attorneys, please visit https://www.bfalaw.com.

https://www.bfalaw.com/cases/planet-fitness-class-action-lawsuit

Attorney advertising. Past results do not guarantee future outcomes.

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SOURCE Bleichmar Fonti & Auld LLP