Portia Ku


Thank you for your interest. Before you communicate with one of our attorneys, please note: Any comments our attorneys share with you are general information and not legal advice. No attorney-client relationship will exist between you or your business and O’Melveny or any of its attorneys unless conflicts have been cleared, our management has given its approval, and an engagement letter has been signed. Meanwhile, you agree: we have no duty to advise you or provide you with legal assistance; you will not divulge any confidences or send any confidential or sensitive information to our attorneys (we are not in a position to keep it confidential and might be required to convey it to our clients); and, you may not use this contact to attempt to disqualify O’Melveny from representing other clients adverse to you or your business. By clicking "accept" you acknowledge receipt and agree to all of the terms of this paragraph and our Disclaimer.

Through her 25-year career in M&A and capital markets, Portia Ku has earned a position as a top advisor to companies, their executives, boards and investors for guiding on their most important corporate and transactional matters.  Her accomplishments are numerous, and span groundbreaking IPOs and other capital markets matters, innovative and complex mergers and acquisitions, venture capital and private equity financings.  Portia’s versatility encompasses not just her many key areas of practice, but industry specialties as well, which include technology, life sciences, healthcare, electric vehicles, batteries, green energy packaging and other green energy products.  All told, Portia has advised on approximately US$20 billion in M&A and capital markets matters.

Year in and year out, Portia has successfully completing a variety of deals throughout both favorable and challenging market conditions. She applies her expansive technical experience, strategic execution, and solutions-oriented mindset to guide clients through highly complicated transactions.


  • Mandarin Chinese
  • Taiwanese

Honors & Awards

  • Recognized as a "Leading Lawyer" (2017)  and "Highly Regarded" (2018-2023) in Capital Markets and Private Equity by IFLR1000
  • Recognized by Daily Journal as a “Top Women Lawyer”


Bar Admissions

  • California
  • New York
  • Taiwan


  • Yale University, LL.M.
  • National Taiwan University, LL.B.

Public and Private Offerings (companies):

  • Belite Bio, Inc (NASDAQ: BLTE) in its US$30 million follow-on offering
  • Belite Bio, Inc (NASDAQ: BLTE) in its US$36 million IPO and listing on NASDAQ
  • Pharmaron in a Regulation S private offering of US$600 million of zero coupon convertible bonds due 2026
  • Pharmaron in its approximately US$588 million dual primary listing and H share offering in Hong Kong
  • eHi Car Services (NYSE: EHIC) in its US$120 million IPO and listing on the NYSE
  • Montage Technology Group Limited (NASDAQ: MONT) in its US$81.7 million IPO and listing on NASDAQ
  • China Kanghui Holdings (NYSE: KH) in its US$78.7 million IPO and listing on the NYSE
  • iSoftStone Holdings Ltd. (NYSE: ISS) in its US$162 million IPO and listing on the NYSE
  • 7 Days Group Holdings (NYSE: SVN) in its US$127.8 million IPO and listing on the NYSE
  • Giant Interactive Group Inc. (NYSE: GA) in its US$1.02 billion IPO and listing on the NYSE
  • WuXi PharmaTech (NYSE: WX) in its US$212 million IPO and listing on the NYSE
  • Acorn International, Inc. (NYSE: ATV) in its US$119.4 million IPO and listing on the NYSE
  • Mindray Medical International Limited (NYSE: MR) in its US$320 million IPO and listing on the NYSE
  • Christine International Holdings Ltd. (1210.HK) in its HK$400 million IPO and listing on the Hong Kong Stock Exchange
  • LifeTech Scientific Corporation (8122.HK) in its HK$283 million IPO on the Growth Enterprise Market of the Hong Kong Stock Exchange
  • Besunyen Holdings Company Limited (0926.HK) in its HK$1.3 billion IPO and listing on the Hong Kong Stock Exchange