Femto Partners

Femto originates a material portion of its pipeline through management buyouts and corporate spin-offs. The firm identifies business units or subsidiaries within listed Japanese companies that could scale as independent entities, structuring MBOs with a focus on fair financing schemes that minimize management burden. This channel operates alongside direct startup investing, giving Femto access to mature assets that never appear in venture auctions.

In December 2025, Femto ranked first in the 7th Domestic VC Performance Benchmark survey for the 2024 vintage year. The firm self-reported the ranking on its website. No independent verification of the underlying methodology or peer set is publicly available.

Founder and General Partner Tetsuya Isozaki leads the firm alongside General Partner Yuhei Soga and Managing Partner Katsuhiko Okubo. The eight-person team operates without a separate investment committee disclosed publicly; principals Isozaki and Soga appear as the primary decision-makers based on firm materials.

Femto manages three Japanese limited partnership funds: Femto Growth Fund 2.0 (¥4 billion, 2017), Femto Growth III (¥11.1 billion, 2020), and Femto Growth I (2022). Femto Growth I was formed via an in-specie transfer of assets from prior vehicles, suggesting a consolidation rather than new capital raise. The firm has not disclosed a subsequent fund close.

Yes. In November 2025, Femto executed an additional investment in IVRy; in July 2025, it made a follow-on investment in Henly. Both were disclosed as top-line news items on the firm's website, consistent with a strategy of concentrated portfolio support through multiple growth phases.