The Planet Fitness, Inc. securities case is moving forward.
Matsunaga v. Planet Fitness, Inc., No. 1:26-cv-00576 (D. N.H.)
A court-appointed lead plaintiff is now litigating on behalf of all class members. If you bought PLNT during the class period, your potential claim is unaffected — you didn't need to do anything by the deadline. Register to follow the case and have your losses evaluated for free.
- No cost to participate
- No fee unless investors recover
- Talk to a real person, not a call center
- Lead plaintiff deadline
- Passed — September 14, 2026
- Class members' claims unaffected
- Class period
- Nov 6, 2025 – May 6, 2026
- Eligible purchases fall between these dates
What happened to PLNT
About this case
A securities class action alleges Planet Fitness touted the continued success of its marketing campaign, a planned Black Card price increase, and its FY2026 and three-year growth guidance, while concealing that its marketing had pivoted too far and was alienating its core customer base, dragging down new member joins. When Planet Fitness cut its same-store sales guidance, withdrew its three-year growth targets, paused the price increase, and acknowledged the marketing had gone too far on May 7, 2026, its stock fell approximately 31% in a single day.
The allegations, in plain terms
- Nov 6, 2025Class period begins. Per the complaint, Planet Fitness touted the continued success of its marketing campaign, a planned Black Card price increase, and its FY2026 and three-year growth guidance.
- Nov 2025 – May 2026During the class period, the complaint alleges the company concealed that its marketing had pivoted too far and was alienating its core customer base, dragging down new member joins.
- May 7, 2026Planet Fitness allegedly cut its same-store sales guidance, withdrew its three-year growth targets, paused the Black Card price increase, and acknowledged its marketing had gone too far. The stock fell approximately 31% in a single day, per the complaint.
- FiledA securities class action, Matsunaga v. Planet Fitness, Inc., No. 1:26-cv-00576 (D. N.H.), has been filed on behalf of investors who purchased shares between November 6, 2025 and May 6, 2026. The allegations have not been proven.
Summarizes allegations in the complaint — they are not findings of any court.
We screen hundreds of stock drops every year and file only a handful. If we're investigating this one, it's because we believe in it.
Block & Leviton is run by the partners whose names are on the door — and our clients deal with them directly, whatever the size of the loss. That's the point of staying small.
A dismissed case turned into a $150 million record.* A recovery from a company that went bankrupt. We build cases to go the distance — not to settle cheap.
* Subject to court approval. Prior results do not guarantee a similar outcome.
Who we are — and why we're involved
Block & Leviton represents investors. We never represent the companies we investigate. When a company's own disclosures reveal that shareholders were misled, we investigate and bring claims to recover those losses.
Our clients are people like you: individual investors, retirees, and pension funds harmed when the truth comes out and a stock falls. There is no cost to you to participate, and attorneys' fees are paid only out of a recovery approved by the court.
Who you'll be dealing with
Jeffrey Block
Represents investors in securities class actions nationwide.
Your first call will usually be with David White, our investor liaison — and our partners are directly involved in every case.
A record courts have trusted
NextEra Energy — $150 million
The district court dismissed the case. We appealed — and won a unanimous reversal in the Eleventh Circuit Court of Appeals. The result: a $150 million settlement — the largest securities class action settlement in the Southern District of Florida in more than 30 years.*
Dismissed — then revived when we persuaded the court to reconsider its own judgment. Settled in 2026.
Recovered for investors even after Tricida itself went bankrupt.
Federal courts have appointed Block & Leviton lead counsel in securities class actions on behalf of investors nationwide. Our attorneys have recovered billions of dollars for investors, retirees, and pension funds.
* Subject to court approval. Prior results do not guarantee a similar outcome. Attorney advertising.
Common questions
Will this cost me anything?
No. There is no cost to submit your information, no cost to participate, and no out-of-pocket cost ever. If there's a recovery, attorneys' fees are paid from it and must be approved by the court.
Do I have to go to court or sue anyone myself?
No. The case is brought on behalf of all affected investors as a group. Unless you choose to seek a larger role, participating requires essentially nothing from you.
I'm already part of the class automatically — so why submit my information?
It's true: if you bought PLNT during the class period, you're a class member whether or not you contact anyone. Submitting your information lets us evaluate your specific losses, keep you informed as the case develops, and tell you whether you may benefit from a larger role in the case.
The lead plaintiff deadline passed — am I out of luck?
No. That deadline only governed who could seek appointment to lead the case. Your potential claim as a class member is unaffected — if the case succeeds, class members who file valid claims share in the recovery, and we'll keep you informed of every step if you register.
I sold my shares after the drop — am I still eligible?
Possibly, yes. What generally matters is that you purchased shares during the class period and were harmed by the decline. Whether you still hold shares today doesn't necessarily disqualify you — submit your details and we'll evaluate your situation.
Does submitting this form make you my lawyers?
No — and that's a protection for you. Submitting the form only lets us evaluate your potential claim, at no cost. If we determine we can help and you decide to move forward, we'll send you a written retainer agreement that spells out the relationship, the contingency fee, and your rights. You're never committed to anything until you've read and signed it.
What happens after I submit the form?
Our team reviews your submission — usually within one business day. David, our investor liaison, will reach out by phone or email, and our partners are directly involved in every case. You're never obligated to do anything.
Attorney advertising. Prior results do not guarantee a similar outcome. Block & Leviton LLP is responsible for the content of this page. Submitting information through this page does not create an attorney-client relationship.