[San Francisco, California] — February 5, 2026 — BoostDraft, a leading provider of AI-assisted legal document automation solutions, today announced a new executive leadership structure to support its next phase of global growth. Effective January 31, 2026, Sean Yu has been appointed Chief Executive Officer, and Haruku Horiuchi has been appointed Chief Operating Officer.

Yu succeeds the company’s co-founders, Yohei Fujii and Hiroshi Watanabe, who will continue to support BoostDraft as founders and advisors.

Founded in 2021, BoostDraft has established a strong presence across Japan, South Korea, and other APAC markets, while expanding rapidly in the United States, the United Kingdom, and other international markets. As demand grows for practical, workflow-native legal technology,the company is evolving its leadership structure to scale product development and operations globally.

“BoostDraft has always been a product-first company, grounded in close collaboration with our customers,” said Sean Yu, CEO of BoostDraft. “As we scale, my focus is on preserving that discipline — building reliable, intuitive tools that fit naturally into how lawyers already work, while expanding our ability to serve teams around the world.”

Yu brings extensive experience leading product growth at global technology companies including Wise, Skyscanner, and Alibaba. He joined BoostDraft in 2024 as Product Manager and has led product development during a period of rapid customer adoption.

As COO, Haruku Horiuchi will oversee business operations and organizational scaling, translating product strategy into repeatable execution across the company’s growing global footprint.

“Scaling successfully requires more than just a strong vision. It requires systems that allow teams to execute consistently,” said Haruku Horiuchi, COO of BoostDraft. “My role is to build the operational foundation that supports growth while preserving the culture and product quality that have defined BoostDraft from the beginning.”

Horiuchi previously held leadership roles at Yahoo Japan and Rakuten Group, where he managed large, multinational product organizations. He joined BoostDraft in 2025 as Senior Strategy and Business Operations Manager.

About BoostDraft

 

BoostDraft transforms Microsoft Word into an AI-assisted legal document editor, helping transactional lawyers automate tedious contract tasks such as checking internal cross-references, standardizing defined terms, and fixing formatting. With minimal training required and seamless integration into existing workflows, BoostDraft empowers legal teams to focus on the substance of business agreements instead of rote work. Learn more at boostdraft.com.