Rei Ushikubo

Rei Ushikubo serves as Chief Executive Officer, Shizen International Inc. at Shizen Energy Group. Shizen Energy Group operates in the renewables & environment sector with approximately 210.0 employees. The company is headquartered in Tokyo, Tokyo. Shizen Energy Group generates annual revenue of 5000000.0. To date, Shizen Energy Group has raised 474000000.0 in total funding, with the most recent round being Other.

Industry & Role Insights

• • MessageCEO tracks 1,361 executives in the renewables & environment sector.
• • 440 executive contacts are available in Tokyo.
• • Our database includes 201,468 c suite-level executives.

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Barbara Wittenberg CTO at 1KOMMA5°

HC

Heino Cumpanas Chief Executive Officer (CEO) 1KOMMA5° - Ingolstadt/Landshut GmbH at 1KOMMA5°

JG

Joana Glaum Brand Marketing Manager & PA to the CEO at 1KOMMA5°

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Sophia Rodiger Chief Marketing Officer DACH at 1KOMMA5°

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Jake Kilgore Chief Executive Officer at 1Solar

Outreach Guidance — renewables & environment Sector

Executives like Rei Ushikubo in the renewables & environment sector receive targeted outreach from sales teams, recruiters, and investors. To stand out, personalize your message with industry-specific context and a clear, specific value proposition relevant to their role at Shizen Energy Group.

Rei Ushikubo's Position in the MessageCEO Database

• •Rei Ushikubo is 1 of 1 verified executive contact we track at Shizen Energy Group.
• •1,337 verified executive contacts in renewables & environment are in the MessageCEO database.
• •437 verified executive contacts in Tokyo are in the database.
• •18 verified contacts work at renewables & environment companies in the 210.0 employee range (same size as Shizen Energy Group).

Executive contact data compiled from public business filings, LinkedIn public profiles, company press materials, and verified outbound email testing. We do not publish personal addresses or sensitive identifiers. Methodology & sources · Removal requests handled at /remove-info · Updated July 2026.

How do I reach Rei Ushikubo directly?

Rei Ushikubo's verified email address is available to MessageCEO Pro subscribers. They currently serve as Chief Executive Officer, Shizen International Inc. at Shizen Energy Group. Access direct contact info to skip gatekeepers and reach the decision maker.

What company does Rei Ushikubo work for?

Rei Ushikubo is Chief Executive Officer, Shizen International Inc. at Shizen Energy Group, a company in the renewables & environment sector with 210.0 employees. The company is based in Tokyo, Tokyo.

Can I pitch or sell to Rei Ushikubo?

As Chief Executive Officer, Shizen International Inc. at Shizen Energy Group, Rei Ushikubo is a key decision-maker in the renewables & environment sector. MessageCEO Pro gives you verified email to reach Rei Ushikubo directly — ideal for B2B sales, partnerships, and executive recruiting.

What industry is Rei Ushikubo in?

Rei Ushikubo works in the renewables & environment industry as Chief Executive Officer, Shizen International Inc. at Shizen Energy Group. MessageCEO provides verified contact information for executives across all major industries.

Is Rei Ushikubo's contact information verified?

Yes. MessageCEO verifies executive contact information through multiple data sources and regular validation checks. Rei Ushikubo's profile is kept up-to-date with the latest available information.

Last updated: July 28, 2026