Please answer the following question: The Honourable Joseph YAM Chi-kwong GBM GBS CBE JP (born 1948 Hong Kong)) is a Hong Kong statistician economist and civil servant. Yam was the Chief Executive of the Hong Kong Monetary Authority (HKMA) from April 1993 to 1 October 2009. Since 2011 he has been a member of the Board of Directors of the Swiss Bank UBS AG. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Answer:
Office Holder