Leadership Transition Announcement

March 17, 2025

PlantStream Inc. announces a change in its Chief Executive Officer (CEO), effective March 17, 2025.

Seitaro Narue, who has served as CEO, has stepped down, and Takehito Miki has been appointed as the new CEO. Miki has played a key role in driving our business growth as Chief Revenue Officer (CRO) of Arent Inc., our parent company, while also serving as our Chief Operating Officer (COO). As CEO, he will strengthen both the development and sales functions, leading the company towards further business growth and innovation.

Additionally, Takashi Oda, who has been serving as Co-CEO, will now assume the dual role of Co-CEO and Chief Technology Officer (CTO).

PlantStream Inc. was established in 2020 as a joint venture between Arent Inc. and Chiyoda Corporation, focusing on the development and sales of the 3D CAD software “PlantStream®.” With Arent Inc.’s acquisition of Chiyoda Corporation’s shares, PlantStream Inc. has now become a wholly owned subsidiary of Arent Inc. This transition aims to accelerate decision-making and enhance management efficiency. While Chiyoda Corporation will no longer be the parent company, PlantStream Inc. and Chiyoda Corporation will continue our technical partnership, leveraging the expertise of both companies to drive innovation and further advance the plant engineering industry.

Press Releases from Both Companies Regarding This Share Transfer
- Arent Inc. Announcement: Link
- Chiyoda Corporation Announcement: Link

There will be no changes to our business operations, and customers can continue to use “PlantStream®” as before.

Under the new leadership, PlantStream Inc. remains committed to advancing technological innovation and enhancing its services, contributing to the development of the plant engineering industry. We sincerely appreciate your continued support.

・Profile of the New CEO

Name: Takehito Miki

Career Summary:

Takehito Miki graduated from Kyoto University, Faculty of Engineering. He began his career at Keyence Corporation, where he provided consulting sales for FA equipment, supporting automation in manufacturing plants.

He later joined Recruit Co., Ltd., where he led the launch of the Business Succession Center for Owner-Managers as a new business initiative. As the business leader and group manager, he oversaw a team of approximately 25 members, driving its growth and expansion.

Following this, he moved to Amazon Japan LLC, working in corporate planning. He then joined Arent Inc., where he played a key role in driving DX initiatives for clients in the construction and plant industries.

In 2022, he was appointed COO of PlantStream, contributing to business growth and organizational strengthening. In March 2025, he assumed the role of CEO of PlantStream, leading the company into its next phase of innovation and development.

Message:

I am honored to assume the role of CEO at PlantStream. Since 2022, I have been involved in management as COO, focusing on business growth and organizational strengthening.

I am committed to carrying forward the innovative technology and vision established by my predecessor, Seitaro Narue, and leading the company toward even greater achievements. As PlantStream embarks on a new stage, I look forward to your continued support and guidance.

・Profile of the Co-CEO & CTO

Name: Takashi Oda

Career Summary:

Takashi Oda graduated from the Graduate School of Science at Kyoto University, where he earned his doctorate. He began his career at Armonicos Co., Ltd., where he served as the development manager for the reverse engineering software “spScan” and contributed to the development of medical CAD/CAM systems. Throughout his career, he has collaborated on numerous research projects with universities and research institutions, expanding his expertise in advanced engineering and software development.

In 2019, he joined Arent Inc. (formerly CFlat) and currently serves as Executive Director at Arent.

Message:

It has been approximately six years since I first became involved in the development of PlantStream, including the period before the company was founded. Today, our solution has grown to be used by customers worldwide, yet we are still on the path toward realizing our full vision.

Moving forward, we will continue integrating cutting-edge technologies and accelerating development to drive further innovation in the plant engineering industry. We sincerely appreciate your continued support.