Company Principals
Dwight Brunhoeler - President
Dwight Brunhoeler became President of AmStem Corporation in September, 2010.
Mr. Brunoehler founded Cryobanks International in 1993 and served as its President and CEO until 2008. After starting one of the oldest cord blood banks in the world, he established the only (and still existing) nationwide system whereby expectant mothers can sign-up to donate their baby’s cord blood from anywhere in the Continental United States year round. While driving the development of the Company's quality-focused proprietary collection and processing system, Mr. Brunoehler started Cryobanks on the path to becoming one of the largest banks for donated unrelated umbilical cord blood in existence. In addition, Mr. Brunoehler has developed partnerships between Cryobanks International and physicians and hospitals worldwide to further advance the usage of cord blood stem cells for transplant and non-controversial life enhancing research. In the United States, Mr. Brunoehler has worked with many state legislators in drafting laws where expectant mothers are educated and informed of the benefits of cord blood donation. He was instrumental in drafting the first state cord blood awareness legislation of its kind in Illinois with Representative David Leitch. Mr. Brunoehler then assisted Wisconsin Representative Stephen Weickert with similar legislation along with a number of other state initiatives throughout the country. He has also generated many unique research and development partnerships to further discover additional therapeutic benefits of cord blood stem cells. Mr. Brunoehler is a member of The Cord Blood Work Group and the Finance Sub Committees of the World Marrow Donor Association. He is an Active Member of the American Society of Hematology and a Founding Member of the International Cord Blood Society. Mr. Brunoehler has lectured in numerous hospitals and universities throughout the world on the subject of cord blood donation. He engineered a worldwide network of licensed facilities to grow the inventory and availability of cord blood, with the first three locations open in Athens, Greece, New Delhi, India and Bangkok, Thailand in 2008. The Athens location became the first facility in Europe to be accredited by the American Association of Blood Banks. Prior to his work at Cryobanks International, Mr. Brunoehler participated in a wide variety of successful ventures. He owned and operated many different businesses and held executive level positions in marketing, public relations and new product development capacities in both established and start-up companies, including seven years with the Bell system. Honors have included the Florida Public Relations Association's Golden Image Award of Distinction; the National Convention of State Delegates featured speaker, as well as numerous awards and accolades in both the corporate and civic arenas including March of Dimes Corporate Volunteer of the Year. He is a graduate of the University of Central Florida, where in 2007 he was the keynote speaker at the commencement celebration for advanced degrees in the health sciences sector.
David L Stark - CEO & CTO
 David Stark joined as CEO in April 2008. David Stark is an internationally recognized research innovator. Formerly the Director of the National Institute of Clinical Research (NICR), David Stark has been responsible for the design, organization and implementation of clinical trials for pharmaceutical and device companies -- from multi-billion dollar corporations to small, entrepreneurial start-ups. He has a broad background in designing, conducting, and monitoring clinical trials of new pharmaceuticals and devices. Reuters: Stem Cell Therapy International Appoints Dr. David L. Stark as President in Anticipation of the Upcoming Merger With Histostem of Korea
Andrew Norstrud - CFO
 Mr. Norstrud joined the Company in September 2007 as the Chief Financial Officer. In addition to work that Mr. Norstrud does for the Company, he also does consulting work for Norco Accounting and Consulting and is the Chief Financial Officer of Jagged Peak, Inc.. Previously Mr. Norstrud was with Segmentz, Inc., where he served as Chief Financial Officer, and played an instrumental role in the company achieving its strategic goals by pursuing and attaining growth initiatives, building an exceptional financial team, completing and integrating strategic acquisitions and implementing the structure required of public companies. Mr. Norstrud has also worked for Grant Thornton LLP, Aerosonic and PricewaterhouseCoopers LLP and has extensive experience with young, rapid growth public companies. Mr. Norstrud earned a Master of Accounting with a systems emphasis from the University of Florida and is a Florida licensed Certified Public Accountant.
Dr. Han Hoon, M.D. PhD. - President Histostem Korea

- Researcher at Medical College UCLA
- Professor at Catholic Medical University
- Research Professor UCLA
- Inst. Of Medical Science, Catholic Medical University
- Korea Representative of the Asia Blood Cord Bank
- Honorary Member -The American Society for Histo –compatibility and Immunogenetics
- Vice Chairman of Korea Society for Biomaterials
- Member and Director of the Experimental Hematology Society
- Major Achievements
- Bone Marrow Bank Establishment
- Cord Blood Bank Establishment
- Stem Cell Bank Establishment
- Success in Bone Marrow Plantation between father and son
- Proved the existence of Stem Cells in Cord Blood
- Cured intractable Buerger disease with Cord Blood Stem Cells
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Mr. Brunoehler founded Cryobanks International in 1993 and served as its President and CEO until 2008. After starting one of the oldest cord blood banks in the world, he established the only (and still existing) nationwide system whereby expectant mothers can sign-up to donate their baby’s cord blood from anywhere in the Continental United States year round. While driving the development of the Company's quality-focused proprietary collection and processing system, Mr. Brunoehler started Cryobanks on the path to becoming one of the largest banks for donated unrelated umbilical cord blood in existence. In addition, Mr. Brunoehler has developed partnerships between Cryobanks International and physicians and hospitals worldwide to further advance the usage of cord blood stem cells for transplant and non-controversial life enhancing research. In the United States, Mr. Brunoehler has worked with many state legislators in drafting laws where expectant mothers are educated and informed of the benefits of cord blood donation. He was instrumental in drafting the first state cord blood awareness legislation of its kind in Illinois with Representative David Leitch. Mr. Brunoehler then assisted Wisconsin Representative Stephen Weickert with similar legislation along with a number of other state initiatives throughout the country. He has also generated many unique research and development partnerships to further discover additional therapeutic benefits of cord blood stem cells. Mr. Brunoehler is a member of The Cord Blood Work Group and the Finance Sub Committees of the World Marrow Donor Association. He is an Active Member of the American Society of Hematology and a Founding Member of the International Cord Blood Society. Mr. Brunoehler has lectured in numerous hospitals and universities throughout the world on the subject of cord blood donation. He engineered a worldwide network of licensed facilities to grow the inventory and availability of cord blood, with the first three locations open in Athens, Greece, New Delhi, India and Bangkok, Thailand in 2008. The Athens location became the first facility in Europe to be accredited by the American Association of Blood Banks. Prior to his work at Cryobanks International, Mr. Brunoehler participated in a wide variety of successful ventures. He owned and operated many different businesses and held executive level positions in marketing, public relations and new product development capacities in both established and start-up companies, including seven years with the Bell system. Honors have included the Florida Public Relations Association's Golden Image Award of Distinction; the National Convention of State Delegates featured speaker, as well as numerous awards and accolades in both the corporate and civic arenas including March of Dimes Corporate Volunteer of the Year. He is a graduate of the University of Central Florida, where in 2007 he was the keynote speaker at the commencement celebration for advanced degrees in the health sciences sector.
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