[Seminar Report] Storage-Oh Presents at Seminar Hosted by Funai Consulting

Storage-Oh Co., Ltd. (Headquarters: Ichikawa, Chiba; Representative Director: Jiro Arakawa; Securities Code: 2997; hereinafter "Storage-Oh"), which engages in the planning, development, operation, and management of self-storage facilities, is pleased to announce that our Representative Director Jiro Arakawa and Director and Managing Executive Officer Yoshinori Sato served as speakers at the seminar "High-Profit Self-Storage Business with 10%–15% Annual Yield," hosted by Funai Consulting Inc. on March 17, 2026.

This seminar was held for companies and investors seeking new pillars for their real estate businesses, providing insights into the marketability, revenue models, and key points for launching and operating a self-storage business.

[Storage-Oh Land and Building Utilization Investment Website](https://www.storageoh.jp/use_land)

[Image: Seminar scene 1]

Seminar Content Our company delivered presentations on the following themes:

① The Self-Storage Market and Business Model Mr. Arakawa explained the background of the self-storage market's growth, incorporating comparisons with overseas markets. He noted that while self-storage is a mature, massive market in the United States, Japan remains an untapped market with low penetration, indicating significant future growth potential.

Additionally, he introduced our business overview, highlighting our integrated business model—which covers the planning, development, and operation of self-storage facilities—and the characteristics of our stable, stock-type revenue model driven by low cancellation rates.

② Key Points for Business Launch and Profitability Mr. Sato explained practical points for launching the business, including the business structure required to increase profitability, analysis of location, visibility, rent, and competition when deciding on new store openings, specific methods for utilizing idle land, and product design for investors.

Event Overview Many participants attended the event, and numerous specific questions regarding the launch and profitability of the self-storage business were raised during and after the presentations. The seminar was a great success, evidenced by the high level of interest and active exchange of opinions among attendees.

Characteristics of the Self-Storage Business The self-storage business we presented has the following features: - A high-profit model with an expected annual yield of 10–15% - A stable, stock-type business with high occupancy retention - Low risk of rent decline, making it easy to maintain asset value - An efficient business structure that can be operated with a small number of staff

[Image: Seminar scene 2]

Future Outlook Based on our track record of developing and operating over 200 locations nationwide, we will continue to contribute to the popularization and market expansion of the self-storage business. Furthermore, we intend to strengthen our support for the introduction of this business and our partnerships as a new revenue foundation within the real estate industry.

【Seminar Overview】 Seminar Name: High-Profit Self-Storage Business with 10%–15% Annual Yield Organizer: Funai Consulting Inc. Date: March 17, 2026 Venue: Funai Soken Group Tokyo Headquarters, Sustain Growth Square TOKYO

Speaker Profiles [Image: Jiro Arakawa] Storage-Oh Co., Ltd. Representative Director and President Jiro Arakawa After working at Nippon Steel Corporation, Parco Co., Ltd., Warehouse Terrada, and Develop Co., Ltd. (the parent company at the time of our founding), he assumed his current position as Representative Director and President of Storage-Oh. In April 2022, he achieved the company's listing on the Tokyo Stock Exchange Growth Market (Securities Code: 2997).

[Image: Yoshinori Sato] Storage-Oh Co., Ltd. Director, Managing Executive Officer, General Manager of Development Department, and General Manager of Corporate Planning Office Yoshinori Sato With over 10 years of experience in the real estate industry, he possesses diverse expertise including financial aspects and bank financing. He has experience in buying and selling self-storage facilities for investors and corporations, as well as acting as an arranger for private funds. He is well-versed in a wide variety of asset types, including not only self-storage but also solar power plants and hotel projects.

About Storage-Oh Co., Ltd. Guided by our management philosophy of "co-creating the future of people's lives and society through the sustainable enhancement of customer asset value," we engage in the planning, development, operation, and management of self-storage facilities. We currently operate 223 locations with over 13,000 units, primarily in Tokyo and Okayama.

It is said that the household penetration rate of self-storage in Japan is less than 1%, which remains low compared to countries where self-storage is widespread, such as the United States, where the rate is approximately 10%.

Although it is a service that many are not yet familiar with, customers who have used it once often provide positive feedback, such as "my room is now tidy and comfortable" or "I was able to organize my belongings by rotating seasonal items."

Customers use self-storage for various reasons: rotating seasonal appliances and clothing, storing precious hobby collections, keeping items that take up space at home but cannot be discarded (such as childhood mementos), adjusting for space when a family grows, or storing disaster prevention supplies. We believe it is our mission as a self-storage operator to provide clean and safe facilities as a subscription service that helps build a more comfortable environment for our customers, making their homes and offices more comfortable spaces—a social need that will only continue to grow.

Company Overview Trade Name: Storage-Oh Co., Ltd. (Securities Code: 2997) Representative: Jiro Arakawa, Representative Director Address: 4F, 1-9-23 Ichikawaminami, Ichikawa, Chiba 272-0033 Established: May 2008 Business Content: Planning, development, operation, and management of self-storage; Property management; All businesses incidental or related to the above Capital: 261,888,000 yen Service Site: https://www.storageoh.jp/ Corporate Site: https://www.storageoh.co.jp/ Itsucoco: https://itsucoco.com/