Management Team

The BioPharmX management team consists of Silicon Valley executives, scientists and business professionals combining large company discipline with deep biotech expertise focused on drug delivery and molecular properties. The team has the proven ability to raise capital and streamline new technologies into viable, marketable and successful products.

Listed below is the senior management team at BioPharmX. 

David S. Tierney, M.D., Chief Executive Officer & President

An experienced entrepreneurial pharmaceutical and med-tech C-level executive, Dr. Tierney has an extensive track record of delivering success. He has overseen the growth and successful exit of a number of specialty pharmaceutical and medical device companies. Most recently, Dr. Tierney served as president and chief executive officer of Icon Bioscience, leading his team to FDA approval of its New Drug Application (NDA) for DEXYCU™ in 2018. Dr. Tierney was president and chief operating officer of Oceana Therapeutics, a specialty therapeutic company he co-founded in 2008 and was later acquired by Salix Pharmaceuticals. In his role as president and chief executive officer of Valera Pharmaceuticals, Tierney raised over $65 million in funding and completed a successful IPO and oversaw NDA approvals of VANTAS™ and SUPPRELIN LA™. In addition to Dr. Tierney’s leadership roles, he has extensive experience in raising capital and has held a position with investment firm, Signet Health Partners. He is the recipient of two Ernst & Young Entrepreneur of the Year® awards. Dr. Tierney also serves on the board of directors of Catalyst Pharmaceuticals, Kempharm, Bimeda, and Palvella Therapeutics. Dr. Tierney received his medical degree from The Royal College of Surgeons in Dublin, Ireland.

Steven M. Bosacki, JD, MBA, Chief Operating Officer

Mr. Bosacki is a skilled specialty pharmaceutical executive with over 20 years of operational experience in clinical development, regulatory and legal oversight, and product commercialization. Previously, he served as President and CEO for Lautus Pharmaceuticals, a privately held pharmaceutical company focused on the dermatology and aesthetics markets. Mr. Bosacki revived and expanded the GlyDerm product line which was acquired by Mission Pharmacal in 2016 after which Mr. Bosacki joined the Mission Pharmacal team to lead its newly formed aesthetic dermatology division, Espada Dermatology, Inc. He served as Senior Vice President and General Counsel for Oceana Therapeutics, Inc., a specialty therapeutic company he co-founded. In that capacity, Mr. Bosacki was lead counsel in connection with a $50 million capital raise and was instrumental in establishing a global commercial network that ultimately led to Oceana’s acquisition by Salix Pharmaceuticals in 2011. Prior to Oceana Therapeutics, Mr. Bosacki served as Senior Vice President and General Counsel for Esprit Pharma, Inc., where he negotiated $135 million in financing and successfully managed product acquisitions and divestitures. Esprit Pharma was acquired by Allergan, Inc. in 2007. Earlier in his career, Mr. Bosacki served in a variety of management positions at Cardinal Health. Prior to entering the specialty pharmaceutical industry, he practiced corporate and banking law. Mr. Bosacki received his US and Canadian law degrees from University of Detroit School of Law and University of Windsor, respectively, and his MBA from the University of Windsor in Canada.

Joyce Goto, Chief Accounting Officer

Ms. Goto brings over 20 years of financial management and accounting experience to BioPharmX. Prior to joining BioPharmX, she was corporate controller at MoSys, a publicly held company and provider of semiconductor solutions for cloud networking, security, test and video systems.  Prior to this role, she was divisional controller at Pinnacle Systems, now a division of Avid Technology, a publicly held company.  Ms. Goto also held various positions at Deloitte and Touche, LLP, a public accounting firm.  Ms. Goto holds a Bachelor of Science in Accounting from Cal Poly, San Luis Obispo and is a certified public accountant.

G. Scott Herron, Medical Director

Dr. Herron is a physician scientist with nearly three decades of dermatology experience and maintains an active clinical practice in Palo Alto, California.  As faculty at Stanford University School of Medicine he conducted biomedical research, consulted with the biopharmaceutical industry, authored or co-authored more than 30 peer-reviewed papers, and secured several patents in the biomedical field. In addition he held the position of medical director for Reliant Technologies.  Dr. Herron has been honored for his work in the field and is repeatedly recognized as a thought-leading physician. He graduated from Lewis and Clark College with degrees in chemistry and biology, completed his doctoral work at Oregon State University in biochemistry and biophysics and obtained his medical doctor degree from University of Southern California Medical School.