New York, New York - Newsfile Corp. - April 15, 2023 - WHY: Rosen Law Firm, a global investor rights law firm, continues to investigate potential securities claims on behalf of shareholders of Trinseo PLC (NYSE: TSE) resulting from allegations that Trinseo may have issued materially misleading business information to the investing public.

SO WHAT: If you purchased Trinseo securities you may be entitled to compensation without payment of any out of pocket fees or costs through a contingency fee arrangement. The Rosen Law Firm is preparing a class action seeking recovery of investor losses.

WHAT TO DO NEXT: To join the prospective class action, go to https://rosenlegal.com/submit-form/?case_id=13711 or call Phillip Kim, Esq. toll-free at 866-767-3653 or email [email protected] or [email protected] for information on the class action.

WHAT IS THIS ABOUT: On March 27, 2023, The Inquirer published an article entitled "Bristol plant that spilled chemicals into Philly's water supply had other mishaps over the last decade." The article reported "a chemical plant in Bristol that authorities said caused a toxic spill, threatening Philadelphia's drinking water, has a long history of mishaps - including at least four recent contamination incidents." In addition, the article stated "over the past decade, the U.S. Coast Guard twice before detected releases of acrylates [commonly used to produce glass-like acrylics] from the Bristol facility into the Delaware. The EPA had separately flagged two other acrylate releases." The article cites, "David Salas-de la Cruz, a Rutgers University associate professor of chemistry, worked at the Bristol plant during its Rohm and Haas days. He said the number of incidents over the past decade was unusual."

On this news, the price of Trinseo's stock fell $1.09, or 5.26%, to close at $19.62 per share on March 27, 2023.

WHY ROSEN LAW: We encourage investors to select qualified counsel with a track record of success in leadership roles. Often, firms issuing notices do not have comparable experience, resources, or any meaningful peer recognition. Many of these firms do not actually litigate securities class actions. Be wise in selecting counsel. The Rosen Law Firm represents investors throughout the globe, concentrating its practice in securities class actions and shareholder derivative litigation. Rosen Law Firm has achieved the largest ever securities class action settlement against a Chinese Company. Rosen Law Firm was Ranked No. 1 by ISS Securities Class Action Services for number of securities class action settlements in 2017. The firm has been ranked in the top 4 each year since 2013 and has recovered hundreds of millions 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 Plaintiffs' Bar. Many of the firm's attorneys have been recognized by Lawdragon and Super Lawyers.

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Attorney Advertising. Prior results do not guarantee a similar outcome.

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Contact Information:

Laurence Rosen, Esq.
Phillip Kim, Esq.
The Rosen Law Firm, P.A.
275 Madison Avenue, 40th Floor
New York, NY 10016
Tel: (212) 686-1060
Toll Free: (866) 767-3653
Fax: (212) 202-3827
[email protected]
[email protected]
[email protected]
www.rosenlegal.com

The issuer is solely responsible for the content of this announcement.