J-Star Holding Company Announces Jonathan Chiang’s Reappointment as Chief Executive Officer

(SeaPRwire) –   TAICHUNG CITY, Taiwan, April 01, 2026 — J-Star Holding Co., Ltd. (Nasdaq: YMAT) (“J-Star” or the “Company”), a top provider of innovative carbon fiber and composite solutions serving a wide range of applications such as personal sports equipment, healthcare products, automobile parts, resin systems, and research and development services, today announced that Jonathan Chiang has been named again as Chief Executive Officer, taking effect on March 31, 2026. Mr. Chiang replaces Sam Van, who will remain supportive of the Company as an advisor to the Board and management team.

The Board of Directors concluded that Mr. Chiang’s comeback as CEO will offer seasoned leadership and consistency as the Company steers through a time of increased global economic instability and prepares itself for sustained long-term expansion.

Mr. Chiang was previously J-Star’s Chief Executive Officer and has led the Company from its founding, overseeing its growth into a global supplier of high-performance carbon composite products and cutting-edge materials solutions. He will stay on as Chairman of the Board.

“Jonathan’s profound grasp of J-Star’s operations, clientele, and long-term strategy makes him exceptionally suited to lead the Company amid the current macroeconomic landscape,” stated the Board of Directors. “We are certain his guidance will help J-Star stay focused on operational superiority, innovation, and rigorous implementation.”

Mr. Chiang added, “I am privileged to take back the CEO role at this critical juncture for J-Star. Our team has established a solid base, and I am eager to collaborate closely with our staff, clients, and partners to keep pushing forward our technological leadership and provide lasting long-term value to shareholders.”

The Company also conveyed its gratitude for Mr. Van’s contributions during his time as Chief Executive Officer.

“On the Board’s behalf, we thank Sam for his leadership and dedication to J-Star,” the Board further noted. “We are glad he will stay engaged as an advisor and keep supporting the Company’s strategic projects.”

About J-Star Holding Co., Ltd.

J-Star (NASDAQ: YMAT) is a holding company that operates via subsidiaries in Taiwan, Hong Kong, and Samoa, with its main office located in Taiwan. The predecessor group of J-Star was founded in 1970 and has amassed more than 50 years of expertise in the material composites sector. J-Star develops and brings to market technologies related to carbon reinforcement and resin systems. Leveraging decades of experience and knowledge in composites and materials, J-Star can utilize its skills and technology to design and produce a broad array of lightweight, high-performance carbon composite products—including key structural components for electric and sports bicycles, rackets, auto parts, and healthcare items. For more information, visit j-starholding.com and ymacorp.com.

Forward Looking-Statements

Some statements in this press release that pertain to future expectations, plans, and prospects—along with any other statements about non-historical matters—might qualify as “forward-looking statements” under the Private Securities Litigation Reform Act of 1995. These include, but are not limited to, statements about expected trading start and closing dates. Words like “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “should,” “target,” “will,” “would” and similar terms are used to identify forward-looking statements, though not all such statements use these markers. Actual outcomes may vary significantly from those suggested by these forward-looking statements due to several key factors, including uncertainties tied to market conditions and other issues outlined in the “Risk Factors” section of the final prospectus submitted to the SEC. For these and other reasons, investors are warned not to rely too heavily on any forward-looking statements in this press release. All forward-looking statements in this release are valid only as of the date of this document, and J-Star explicitly disclaims any duty to update any forward-looking statement—whether due to new information, future events, or other reasons—except as required by law.

Contact:
Matt Chesler, CFA
FNK IR
646-809-2183
investor@j-starholding.com

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