[ST Corp.] Participatory 'Original Deodorant Power' Co-creation Project Launches! Providing a Co-experience of 'Create, Choose, and Deliver' with Approximately 30,000 Shareholders.

ST Corporation (hereinafter, ST) will launch the '80th Anniversary Original Deodorant Power Project Created with Shareholders' to commemorate its 80th anniversary in 2026. This project is a 'shareholder co-creation project' that embodies ST's purpose: 'With ideas that resonate with the heart, turn ordinary moments into smiles.'

Using ST's flagship brand 'Deodorant Power' as the theme, ST will unite with its shareholders, who exceeded 30,000 at the end of March 2026 (*1), to create an original design limited-edition product. By delivering this product as a shareholder benefit, the company aims to build a new relationship where the company and shareholders connect with smiles.

(*1): As of March 31, 2026 https://www.st-c.co.jp/ir/stockinfo.html

From 'Holding Shares' to 'Participating in Corporate Activities.' Making Shareholders Partners in Creation.

In recent years, the Tokyo Stock Exchange has called for 'constructive dialogue' with investors and shareholders. ST views this dialogue not merely as an IR activity but as an important communication opportunity to create 'smiles in ordinary moments' together with its shareholders.

In this year marking its 80th anniversary, we will further evolve our IR/SR (investor/shareholder relations) approach and promote new engagement measures with our shareholders.

・From 'Reporting' to 'Co-creation' in Corporate Activities:

We will move from a relationship of one-way information delivery to welcoming shareholders as partners in co-creating ST's future, strengthening relationship-building through dialogue.

・Creating a Place for 'Shared Experience':

Current shareholder benefits mainly deliver ST's mainstay and new products. In this project, in addition to these traditional benefits, we will provide an exciting 'shared experience' of 'participating' in product creation.

According to a shareholder survey, approximately 74% of shareholders also purchase our products themselves (*2), and the number of long-term shareholders holding shares for over 10 years is increasing. Based on this deep trust, we aim to achieve sustainable corporate value improvement together with our shareholders.

(*2): Shareholder survey conducted by our company from June 2025 to July 2025 (N=1,496)

Putting the Purpose at the Center of Management. A New Bond of Sharing Smiles with Shareholders.

In 2024, ST established its purpose: 'With ideas that resonate with the heart, turn ordinary moments into smiles.' This sentiment remains unchanged not only in product development but also in our relationship with shareholders. While meeting shareholder expectations for enhanced returns, we aim to create moments that bring an involuntary smile even within the somewhat formal world of investment. To this end, we are promoting a 'co-creation engagement plan' to create an original product based on our flagship brand 'Deodorant Power' together with our shareholders. The challenge for ST in its 80th year is to build a new bond by sharing 'smiles' with shareholders through this project.

・Press release on the establishment of the purpose:

https://www.st-c.co.jp/news/newsrelease/2024/20240520_002063.html

Three Steps of the '80th Anniversary Original Deodorant Power Project Created with Shareholders'

The '80th Anniversary Original Deodorant Power Project Created with Shareholders' will proceed through the following three stages.

[Step 1] Creation (Co-creation): Based on dialogue at the general shareholders' meeting and surveys, our designers will select product concepts, design proposals, and fragrances, creating '3' candidate designs.

[Step 2] Voting (Participation): In early December 2026, we will send voting guidance documents (*3) along with dividend-related documents. By the deadline at the end of January 2027, shareholders will vote online for their preferred design from the three original designs. (*3): Shareholders holding at least one share as of the end of September 2026 are eligible.

[Step 3] Delivery (Return): The 'No.1 Design' receiving the most votes will be produced at our own factory. It will be sent to shareholders (*4) as one of the shareholder benefit items scheduled for delivery in June 2027, along with a pamphlet describing the project's story. (*4): Shareholders holding at least 100 shares as of the end of March 2027 are eligible. (*5): The project may be postponed or cancelled due to geopolitical risks or other factors.

Project updates will be communicated on the shareholder-exclusive website 'ST Hioko Hiroba'

Information on the project's status will be regularly posted on ST's shareholder-exclusive website, 'ST Hioko Hiroba.' The process of 'Creation, Voting, and Delivery' in this project will be published as shareholder-exclusive content, including original articles and videos, serving as a hub connecting shareholders and ST with smiles.

■ What is 'ST Hioko Hiroba'?

Since its launch in December 2024, it has been operated as a shareholder-exclusive website to deepen engagement with shareholders. It features original content that conveys ST's corporate culture and the thoughts of its employees, such as 'Handwritten Messages from the President,' 'Behind-the-Scenes R&D Center Videos,' and 'Developers Talk! New Product Introductions.' In the latest ST shareholder survey, it has gained high support from shareholders as an important information tool alongside newspapers and company reports, functioning as a place to deepen understanding of our company.

・Shareholder-exclusive website 'ST Hioko Hiroba': https://st-c.premium-yutaiclub.jp/
(*6) Viewing articles requires registration using a shareholder number, etc.

Project Manager Comment

We have always thought about what kind of exciting shareholder returns are 'uniquely ST.' Dividends and benefits are certainly important. But beyond that, we want to build a relationship where shareholders and ST connect with smiles. So, we devised a plan to create and deliver a product based on 'Deodorant Power,' a product familiar to everyone's daily life, by having shareholders vote on original design candidates.

Through the special experience of 'participating' in this plan, we hope to deepen the bond between you and us. And we hope this project will be a major step towards the 100th anniversary for you and ST.

Towards Sustainable Corporate Value Improvement

Our company is strengthening its touchpoints with individual investors and shareholders throughout the year, including this project, exhibiting at the Nikkei/TSE IR Fair 2026 (August 28-29), and expanding original content on the shareholder-exclusive website 'ST Hioko Hiroba.'

ST will continue to strive for sustainable improvement in corporate value through sincere and proactive dialogue with the capital market.

Information on Shareholder Benefits for the Fiscal Year Ending March 2027

ST will continue its shareholder benefit system as before, expressing gratitude for the daily support of its shareholders and aiming to make our products more familiar to them.