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Mark Kingsley represents clients in a variety of business transactions, with a particular emphasis on mergers and acquisitions, joint ventures and other public and private equity and debt investments on behalf of public and private companies, private equity funds and other investors. As part of his M&A practice, Mr. Kingsley has represented buyers and sellers of both healthy and financially distressed businesses. His clients invest in a broad range of industries, including aerospace, life sciences and real estate.

Mr. Kingsley also represents clients in capital-raising transactions, including public and private debt and equity offerings, and has significant experience in capital restructurings, including debt-to-equity conversions, both in and outside of bankruptcy proceedings.

He also advises public and private companies of various sizes on day-to-day general corporate and governance matters.


  • Carestream Health in the sale of its digital dental business to funds managed by Clayton, Dubilier & Rice and CareCapital Advisors Limited.
  • Veling Ltd., a niche aircraft leasing company, in its partnership with private equity firm Flexpoint Ford LLC to provide Veling with equity capital to support the purchase and leaseback of over $1 billion of commercial aircraft to high-quality airlines over a period of two years.
  • American Securities in its acquisition and subsequent sale of specialty paper coating and finishing company FiberMark Inc. to Neenah Paper Inc., a leading global specialty materials company, for $120 million.
  • Charles B. Wang in his two-stage sale of a controlling interest in the New York Islanders Hockey Club to an investor group led by Scott Malkin and Jon Ledecky.
  • Spirit AeroSystems, Inc. in the sale of its Gulfstream wing work packages and related assets at Spirit's Tulsa, Oklahoma facility, to Triumph Group, Inc.
  • Healthcare Finance Group, LLC, a specialty lender dedicated to providing secured debt financing to healthcare companies, in its sale to specialty finance company Fifth Street Finance Corp. for $110 million.
  • BioTime, Inc., a developer of new products in the field of regenerative medicine utilizing stem cells, in its acquisition of stem cell assets from Geron Corporation, a biotechnology company, forming Asterias BioTherapeutics.
  • Bank of America in the two-part sale, along with a co-investor, of a combined 53% stake in Archstone to Lehman Brothers Holdings Inc., totaling $2.9 billion.
  • Onex Corporation in its acquisition of Boeing’s commercial aerostructures production facilities in Kansas and Oklahoma for $1.2 billion, forming Spirit AeroSystems.
  • Spirit AeroSystems Holdings Inc. in: its initial public offering, which raised $1.65 billion; a follow-on offering, which raised approximately $1 billion; several secondary equity offerings by selling stockholders; and three private offerings, with subsequent exchange offers, and one public offering of a total of $1.2 billion of senior unsecured notes.
  • ACI Capital in its acquisition of Unified Logistics, an amalgamation of specialized logistics businesses.



  • J.D., University of Pennsylvania Law School, 1991
  • B.S., University of Pennsylvania, Wharton School of Business, 1988, cum laude


  • New York