Leadership Team

Our management team and Board of Directors have been carefully selected to provide the best combination of scientific expertise and business acumen.

AATI Scientist


Steven J. Lasky, Ph.D.

Dr. Lasky has served as a Director of AATI since 1997 and CEO since 2002. Prior to becoming CEO Dr. Lasky served as VP of Research & Development and VP of Sales & Marketing. Dr. Lasky has 19 years of management experience, which began at the Union Carbide Technical Center in 1990, where he managed the Process Spectroscopy Center and the Robotics Center, and was a key player in the corporate-wide SAP LIMS installation. Special recognition awards were bestowed five times for visionary concepts and successful implementation of new technology. Dr. Lasky received his B.S. degree in Chemistry from Western Illinois University in 1986 and Ph.D. in Analytical Chemistry from the University of Wyoming in 1990. Publications include the Journal of Physical Chemistry and the Journal of the American Chemical Society.

Brian J. Thompson

Mr. Thompson joined AATI in December 2012 and has over 21 years of executive-level corporate leadership, financial, operational and merger and acquisition experience. Prior to AATI (2006-2012) Mr. Thompson was SVP of Equity Dynamics, a venture capital company owned by John Pappajohn. In his role as SVP, Mr. Thompson evaluated investment opportunities, negotiated investment transactions, raised capital for new ventures and conducted management team guidance through various board and board observer positions. Prior to this, Mr. Thompson was the CFO and CAO for Kum & Go, LC, a regional convenience store chain. During his three-year tenure (2003 to 2006), KG revenue grew from $600M to $1.3B through an organic and acquisitions based model. Prior to KG (2000 to 2003) Mr. Thompson was the President and CFO of Astracon, Inc. of Denver, CO until negotiating the company’s sale in 2003. From 1995 to 2000, Mr. Thompson was a Partner and CFO of the Edgewater Private Equity Funds ($300M in capital), where he completed numerous transactions. After receiving his BS/BA in accounting from the University of South Dakota in 1991, Mr. Thompson spent four years in the audit department of KPMG, LLP in San Antonio and Des Moines.

Pierre Varineau, Ph.D

Dr. Varineau has over 24 years of experience with management, new product design, and implementation, beginning with the development of Chemical Sensors in Los Alamos (1989-1991), and continuing with the new product development & commercialization group at Dow Chemical (1991-2009). Pierre joined AATI in 2009. He is an expert in bringing new products and technologies to market. He was responsible for the implementation of multiple product lines within Dow Chemical as well as the Fragment Analyzer™ within AATI. Dr. Varineau's key focus at Advanced Analytical is the identification, development and commercialization of new technologies. Dr. Varineau is also a certified patent agent and coordinates the company’s complex patent portfolio. Pierre received his Ph.D. in Chemistry from the University of Wyoming in 1989, has 16 publications and 6 patents.

Jonathan C. Hagopian, Ph.D.

Dr. Hagopian is responsible for the development and management of strategic partnerships driving global demand for AATI products. He provides leadership and training for AATI’s international team. Dr. Hagopian joined AATI in 2012 from UC San Diego, where he maintains an adjunct assistant professorship at the Skaggs School of Pharmacy and Pharmaceutical Sciences. He completed B.S. degrees in Aquatic Biology and Cell and Developmental Biology at UC Santa Barbara, Ph.D. and postdoctoral research in Pharmacology and Cellular and Molecular Medicine at UC San Diego, published 17 peer reviewed papers, and received honors and awards from the National Science Foundation, U.S. Fulbright Program, Organization of American States, Howard Hughes Medical Institute, and National Institutes of Health.

Steve Siembieda

Mr. Siembieda has been with Advanced Analytical since 2007, with a primary focus on supporting sales and marketing efforts. Key accomplishments include defining, writing and promoting the strategic initiatives and business plan for the Fragment Analyzer and FEMTO Pulse, establishing and defining marketing efforts within the company and advancing sales of these instruments throughout the world. Prior to this, Mr. Siembieda worked at Kemin Industries (Des Moines, IA) for 8 years, holding several executive positions including Marketing Director for the Petfood division and Assistant Director of Business Development. Before moving to Iowa, Mr. Siembieda was employed for 9 years at a clinical hospital (St. Paul, MN) where he established and managed a Molecular Diagnostic Laboratory to train physicians and aid in clinical diagnosis of patient samples. Mr. Siembieda attained his BA in Biology from Saint Mary’s University (Winona, MN) and holds graduate degrees in Molecular Biology (MS, University of North Dakota) and Business Administration (MBA, Drake University). His accomplishments include being an invited speaker, author of several articles and graduate of leadership programs.

Jeremy R. Kenseth, Ph.D.

Dr. Kenseth is Vice President at Advanced Analytical and has over 15 years experience in basic research, and application and product development. Prior to joining AATI he was Laboratory Manager and an Application Scientist at CombiSep, Inc.

Dr. Kenseth received his B.S. degree in Chemistry from the University of Wisconsin-La Crosse (Biology minor) and a Ph.D. in Analytical Chemistry from Iowa State University, where his research focused on the development of novel immunosensor platforms. He holds one patent and has co-authored several review articles. Publications include the Journal of Pharmaceutical Sciences, Analytical Chemistry, and Journal of American Chemical Society.