Board of directors
Based in Los Angeles, California, StoneCalibre is a privately funded investment company focused on buying and building in fragmented industries, corporate divestitures, and special situations or complex sale processes.
StoneCalibre locations
Los Angeles
Los Angeles
Suite 2550
Los Angeles, CA 90067
T: +1 310.774.0014
Paris
Paris
75116 Paris, France
T: +33 1.47.75.30.12
London
London
London EC4R 1BR
United Kingdom
T: +44 7500.298.929
Brian Wall
Founder and Executive Chairman
Brian Wall founded Calibre Scientific in 2018 through the assembly of multiple acquisitions in the life science tools and diagnostics sector dating back to 2013. Since the formation of Calibre Scientific, he has served as the company's executive chairman. Wall is also the founder and CEO of StoneCalibre, a private investment company that he created in 2012 with the vision of building a long-term portfolio of high-calibre companies. With over twenty years of private equity experience, he has completed numerous investments across a wide variety of industry sectors including healthcare, TMT, industrial, and business services. Prior to starting StoneCalibre, Wall was a long-time partner at Platinum Equity, where he led the acquisition of companies from global Fortune 500 corporations, entrepreneurs, and the public equity markets. He began his career as an acquisition officer for the U.S. Air Force, responsible for acquiring mission-critical satellites from government contractors in support of the Department of Defense. Wall's value system is based on the principles of hard work, mutual respect, and taking a long-term view when it comes to both quality people and quality businesses. He holds a Bachelor of Science from the United States Air Force Academy and an MBA in corporate finance from the University of Southern California.
Siddhartha Kadia, PhD
Chief Executive Officer
Dr. Siddhartha Kadia brings over two decades of leadership experience in the life sciences and diagnostics industries, with a proven track record of driving growth, innovation, and strategic transformation across global organizations. Before joining Calibre Scientific, Dr. Kadia served as president and CEO of PhenomeX, a publicly traded biotechnology tools company, guiding it through to its acquisition by Bruker in 2023. Prior to this, he held the role of president and CEO at EAG Laboratories, a private company delivering scientific solutions across diverse industries. Earlier in his career, Dr. Kadia spent nearly nine years with Invitrogen/Life Technologies, where he held multiple leadership roles across the US, Japan, and China, ultimately leading all reagents and bioprocess brands as president of the Life Sciences Division before the company's acquisition by Thermo Fisher Scientific in 2014. Dr. Kadia holds a PhD in biomedical engineering from Johns Hopkins University School of Medicine, where he was honored with the David Israel Macht Award for Excellence in Research, and a Master of Science in biomedical engineering from Rutgers University.
Usman Shakeel
Director
Usman Shakeel is a managing director in the Mergers & Acquisitions group at StoneCalibre. Since joining StoneCalibre in 2012, he's been actively involved in identifying, evaluating, and executing upon numerous investment opportunities across myriad industries including healthcare and life sciences, software and technology, telecommunications, distribution, and others. Shakeel is responsible for driving all stages of the investment-execution process: initial review, due diligence, valuation, financing and structuring, negotiations, and legal documentation, as well as post-close portfolio company oversight and support. Prior to joining StoneCalibre, Shakeel was part of the Mergers & Acquisitions team at Morgan Stanley in Los Angeles, where he advised clients on strategic alternatives including mergers and acquisitions, refinancings, initial public offerings, and share buybacks. Notable transactions included Molson Coors Brewing Company / StarBev, Joh. A. Benckiser / Peet's Coffee & Tea, International Game Technology / Double Down Interactive and Leap Wireless. Shakeel graduated magna cum laude from the University of Southern California, earning dual Bachelor of Science degrees, one in business administration from the Marshall School of Business and one in accounting from the Leventhal School of Accounting. He continues to stay involved with the university as a mentor to the students in the undergraduate business school.