TOSOH CORPORATION - Notice Regarding Establishment of Subsidiary and Change to Specified Subsidiary

Tokyo, Japan-At the Board of Directors meeting held on September 26, 2023, Tosoh Corporation (below 'the Company') resolved to establish Tosoh Vietnam Polyurethane Co., Ltd (below 'the Vietnamese subsidiary') in Vietnam, and subsequently completed its establishment on April 4, 2024.

The share capital of the Vietnamese subsidiary is more than 10% of the share capital of the Company, qualifying it as a specified subsidiary of the Company.

The Company has determined that, although the Vietnamese subsidiary qualified as a specified subsidiary, the required disclosure under the listing regulations concerning changes in subsidiaries was not made. An apology is extended for this oversight, and although the disclosure is being made retrospectively, the following information is provided regarding the change in subsidiary status. Since the Vietnamese subsidiary was established in April 2024, there are only financial statements for the fiscal year ending December 2024. The facility for the separation and purification of MDI intermediate materials are under construction, and the operation of this facility is scheduled for spring 2027.

Date of the change

April 4, 2024

Future outlook

The Vietnamese subsidiary was established on April 4, 2024, and is included in the scope of consolidation from the Company's consolidated financial statements for the fiscal year ending March 2025. Therefore, the Company recognizes that this matter will not have any new impact on the Company's consolidated financial results for the fiscal year ending March 2025.

Who We Are

Tosoh Corporation is the parent of the Tosoh Group, which comprises over 100 companies worldwide and a multiethnic workforce of over 14,000 people. It generated net sales of JPY1,063.4 billion (US$7.0 billion at the average rate of JPY150 to the US dollar) in fiscal 2025, ended March 31, 2025.

What We Do

Tosoh is one of the largest chlor-alkali manufacturers in Asia. The Company supplies the plastic resins and an array of the basic chemicals that support modern life. Tosoh's petrochemical operations supply ethylene, polyethylene, and functional polymers, while its advanced materials business serves the global semiconductor, display, and solar industries. Tosoh has also pioneered sophisticated bioscience systems that are used for the monitoring of life-threatening diseases. In addition, Tosoh demonstrates its commitment to a sustainable future in part by manufacturing a variety of eco-products.

Stock Exchange Ticker Symbol: 4042

DISCLAIMER

This document may contain forward-looking statements, including, without limitation, statements concerning product development, objectives, goals, and commercial introductions, which involve certain risks and uncertainties. Forward-looking statements are identified through the use of the word anticipates and other words of similar meaning. Actual results may differ significantly from the results expressed in forward-looking statements.

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