Jason Keene
Vice President, Allergy Business Unit

Jason joined HollisterStier in July of 2000. His successful years serving as Director of Allergy Sales and Marketing led to Jason's promotion to the position of Vice President of HollisterStier Allergy. Jason continues to lead the organization's growth, and the future of HollisterStier Allergy is looking brighter than ever.
Jason holds a Bachelor of Science degree from the University of Southern Mississippi.

Mary Miller
Western Regional Sales Manager

Mary joined HollisterStier in 1976. Her strong leadership style was quickly recognized, and Mary was seen as a mentor by many of her colleagues early on in her career. As Regional Sales Manager, Mary provides guidance and support to HollisterStier's sales professionals, who view her in-depth knowledge of the allergy field as a great resource.

David Gilstrap
Eastern Regional Sales Manager

David began his career with HollisterStier in 1981. His years of first-hand sales experience in the allergy field have provided him with an enormous amount of knowledge that continuously benefits HollisterStier’s Sales Team and customers.
David holds a Bachelor of Science degree from Clemson University and is a Major in the United States Army Inactive Ready Reserve.

Larry Garner
National Allergy Consultant

As HollisterStier’s National Allergy Consultant, Larry’s expansive knowledge and technical expertise in the allergy field have proven very beneficial to every customer he meets. Since joining HollisterStier in 1985, Larry has become well known for his lectures on allergy immunotherapy and proper dosing, as well as his comprehensive understanding of the Practice Parameters.
Larry holds a Bachelor of Arts degree from Metropolitan State University and a degree in cardiopulmonary technology from the United States Navy Medical Center, Bethesda, Maryland.

Dan Mork
Resident Botanist and Pollen Facility Manager

When Dan joined HollisterStier in 1977 as a Pollen Technician, it was evident that he had an aptitude for allergens. Dan’s years of experience in allergy, including mycology, mite production and extractions, have provided him with extensive knowledge in virtually every facet of the field. Dan is a vital part of the HollisterStier Allergy team, serving as a technical advisor and managing the procurement of pollen raw materials, as well as the company pollen production.
Dan holds a Bachelor of Science degree, focused in biology, business administration and chemistry, from Eastern Washington University.

Derek Constable, Ph.D.
Technical Director, Allergy Business Unit

As Technical Director for HollisterStier Allergy, Derek provides a wealth of knowledge and expertise in the immunotherapy field. Throughout his career, Derek has been actively involved in the development of new and improved immunotherapy products as well as diagnostics in both Europe and the United States. Since joining HollisterStier in 1979, Derek has been instrumental in quality initiatives and new product development.
Derek holds a Bachelor of Science degree and a Ph.D. in biochemistry from the University of Birmingham, United Kingdom.  

Dave Mirabell
Director, Regulatory Affairs

David oversees the critical function of communicating with domestic and international Food and Drug Agencies, along with state agencies, regarding biologics establishment and product licenses, new drug applications and investigational drug filings. David’s career with HollisterStier began in 1970, and over the years his technical expertise and regulatory knowledge has proven him to be an invaluable member of the organization.
David holds a Bachelor of Science degree, focused in biology, from Western Washington University, and is a member of the Regulatory Affairs Professional Society.

Connie Butler
Allergy Product Manager

Connie joined HollisterStier in 1979, and quickly became an essential part of the HollisterStier team. Her detail oriented nature and ability to head numerous projects at once have been immensely beneficial to the organization. Connie’s expansive knowledge of allergy is invaluable, especially when it comes to being on the forefront of the ever-changing allergy industry.
Connie holds a Bachelor of Arts degree from Whitworth University.

Launa Lorenzen
Corporate Accounts and Customer Service Manager

Since joining HollisterStier in 1987, Launa’s years of experience have provided her with a multi-faceted, extensive understanding of the allergy field. Launa’s enthusiasm and leadership have helped shape HollisterStier’s Customer Service Team into the responsive, knowledgeable resource that they are. Launa, and HollisterStier, are dedicated to providing customers with the quality product they expect and the service they deserve.