JSR : (Progress of Disclosure Items) JSR Announces Completion of the Separation of the Company's Elastomer Business and Transfer of Stock to ENEOS

Translation

Notice: This document is an excerpt translation of the original Japanese document and is only forreference purposes. In the event of any discrepancy between this translated document and the original Japanese document, the latter shall prevail.

April 1, 2022

To whom it may concern,

Company name:	JSR Corporation
Representative	Eric Johnson, Representative Director, CEO
(Code #4185, Tokyo Stock Exchange)
Inquiries to	Yoshiko Takeda, General Manager
Corporate Communication Dept.
TEL: [phone] (Japan)
[phone] (international)

(Progress of Disclosure Items)

JSR Announces Completion of the Separation of the Company's Elastomer Business and Transfer of Stock to ENEOS

JSR Corporation announced that the transaction explained in the disclosure on May 11, 2021, "JSR Announces Plans for the Separation of the Company's Elastomer Business and Transfer of Stock to ENEOS" has been completed today. This transaction ensures the sustainable development of the Elastomers business and accelerates JSR's focus on its Semiconductor Materials and Life Sciences businesses as core growth pillars.

1. Summary of the Disclosure Item

JSR Corporation's elastomer business will be transferred to Japan Synthetic Rubber Spin-off Preparation Co., Ltd., a newly established subsidiary of the Company, by way of an absorption-type split. All shares of the successor company will be transferred to ENEOS Corporation. For details, please refer to the timely disclosure documents dated May 11, 2021.

• 2. Date of Completion: April 1, 2022

• 3. Impact on the Company's business performance

Effective from the first quarter of the fiscal year ending March 31, 2022, the Elastomers business has been classified as a discontinued operation. The profit and loss related to this matter, and related restructuring costs, are reflected in our full-year forecast as losses from discontinued operations and have already been incorporated into our consolidated earnings forecast for the fiscal year ending March 31, 2022, which was announced on November 8, 2021, and remains unchanged.

###

1