Who we are

We are a group of professionals who speak three languages

Our competitive advantage

iProfess promotes dialogue using 3 languages


We support all kinds of disclosures and communications as a bilingual, spending years overseas

Accounting language

We have a strong background in accounting and finance underpinned by extensive working experience in the industry


We understand the needs and minds of investors, the key stakeholders of our customers

iProfess team members

Nana Yasuda

iProfess Partners LLP, CEO
US CPA (CA, license# 82066)
Technical Director of JICPA

  • ~1979 Nana spent her childhood in England
  • 1994 Worked for JAIC, a venture capital firm in Tokyo
  • 1998 As a US CPA, worked for US Deloitte and audited IT and start up companies in Silicon Valley
  • 2003 Also spent 10 years at Deloitte Tohmatsu, Tokyo, specialized in M&A financial due diligence and IFRS
  • 2014 Became a freelancer, offering translation and interpretation services to audit firms, accounting standard-setting bodies, and listed companies
  • 2022 Founded iProfess Partners LLP

Katsura Nakayama

iProfess Partners LLP, COO
Certified Member of Analyst of the Securities Analysts Association of Japan

  • 1994 Graduated from Waseda University, BA in Economics
  • 1994 Joined in Merril Lynch, Japan, working as sales representative dealing in bonds, equities, and alternative assets
  • 2001 Started to work for Sony Bank, Inc., as credit portfolio manager
  • 2007 Established PIFA Partners, Inc. which offers translation services, specialized in investment and accounting. Also provides several Japanese companies with IR consulting services
  • 2022 Joined iProfess Partners LLP