Rosen Law Firm Urges Pentair Investors to Act Before Deadline

NEW YORK, Sept. 19, 2026 /CourierPR/ -- Rosen Law Firm, a global investor rights law firm, has reminded investors in Pentair plc (NYSE: PNR) of an important deadline in a securities class action lawsuit. The firm is urging shareholders who purchased ordinary shares of Pentair between March 11, 2025, and July 14, 2026, inclusive, to secure legal counsel before October 2, 2026.

According to the lawsuit, Pentair’s 80/20 program, which was intended to improve the company’s business and operations, had the opposite effect. The program is alleged to have damaged Pentair’s longstanding commercial relationships, alienated customers, and created widespread customer dissatisfaction, particularly within Pentair’s Pool segment. The lawsuit further claims that Pentair was losing business and market share, as a significant portion of its Pool customers turned to competitors in response to the 80/20 program initiatives. This, it is alleged, had more than offset any purported benefits to Pentair’s business and financial results.

Additionally, the lawsuit alleges that Pentair’s implementation of the 80/20 program caused certain of its remaining Pool customers to buy inventory in excess of their current needs in advance of future price increases, which is said to have cannibalized Pentair’s future sales. It is also claimed that Pentair’s remaining Pool customers received rebates at rates above historical norms, which artificially inflated Pentair’s sales and revenue in the short-term at the expense of future periods. As a result, the lawsuit asserts, Pentair was acutely exposed to material, undisclosed risks of significant financial and operational harms.

Rosen Law Firm, known for its track record in leadership roles in securities class actions, is encouraging investors to take action. The firm has achieved the largest ever securities class action settlement against a Chinese company and was ranked No. 1 by ISS Securities Class Action Services for the number of securities class action settlements in 2017. Since 2013, the firm has been ranked in the top 4 each year and has recovered billions of dollars for investors. In 2019 alone, the firm secured over $438 million for investors. In 2020, founding partner Laurence Rosen was named by law360 as a Titan of the Plaintiffs' Bar.

To join the Pentair class action, investors can visit Rosen Law Firm's website or call Phillip Kim, Esq. toll-free at 866-767-3653 or email [email protected] for more information. A class action lawsuit has already been filed, and if you wish to serve as lead plaintiff, you must move the Court no later than October 2, 2026. A lead plaintiff is a representative party acting on behalf of other class members in directing the litigation.

No class has been certified yet, and until a class is certified, you are not represented by counsel unless you retain one. You may select counsel of your choice or remain an absent class member and do nothing at this point. An investor’s ability to share in any potential future recovery is not dependent upon serving as lead plaintiff.