Executive Team

Jonathan Rogers


  • Responsible for overall company management
  • Global Head of Oilfield Services at Clariant Corporation, responsible for operations in 76 countries with 1,400 employees
  • Global Technology Director of BP for Production Chemistry
  • BS Chemistry, MBA, Fellow of prestigious Royal Society of Chemistry, Holder of 4 Patents
  • EVP at Champion Technologies
  • MD at Sasol Oilfield Chem

Dr. Amir Mahmoudkhani

Director of Technology

  • Responsible for product formulation and testing
  • Global Head of Flow Assurance at Clariant Corporation (2013 – 2019)
  • Adjunct Professor at University of Alberta, Edmonton (2011 – 2015)
  • Inventor and co-Inventor of 38 patent applications in oil & gas
  • Author and co-author of 126 publications in peer-reviewed journals

Leon Chad

Director of Business Development

  • 25+ Years of global and international oilfield business experience
  • Previously, Global Head of Business Development for Clariant Oil Services, including executive accounts and well services segments
  • Other roles included Head of Marketing at Clariant and Region Business Manager for Nalco Energy Services
  • MSc Chemistry

Northeastern US
Leadership Team

Marty Shumway

Technical Director

  • Responsible for leading the Company’s activities in Appalachian basin
  • Licensed Professional Engineer, Certified Petroleum Geologist (AAPG), Certified Professional Earth Scientist (SIPES) and industry speaker
  • 20+ years in the mining and petroleum industries, with experience in both exploration and development of oil and gas properties of petroleum

Donald Kreager

Field Services

Donald (Don) Kreager is our expert field supervisor overseeing all field engineers and pumping crews throughout the Appalachian basin. Don has extensive E&P experience, drilling wells for leading E&P companies all across the Appalachian Basin and also owns his own wells. He was the drilling supervisor at David R Hill Inc. for 9 years.

Southwestern US
Leadership Team

Jason Thompson

Business Development

  • Responsible for developing and managing AssurEOR treatment program business in the US
  • Previously the District Manager of USA West (California and Alaska) for Clariant Oil Services
  • 16 years working in all aspects of oil field production chemicals
  • Holds an MBA and is qualified as a Six Sigma Black Belt

David Siegfried

Director of Operations

  • Responsible for manufacturing and field delivery operations in the Texas basins and Gulf Coast
  • Previously Regional Operations Manager of NalcoChampion and also Clariant Oilfield Chemicals
  • 20 years working in all aspects of oil field production chemicals.
  • Expert in DOT, ESHA and ISO 9001 and 14001 Quality procedure implementation

Locus Bio-Energy leverages its core scientific capabilities from its parent organization, Locus Fermentation Solutions (Locus FS), an Ohio‐based bioscience company accelerating environmentally-friendly, microbial-based technologies as chemical alternatives in key global industries.

Locus FS has provided the resources to support the development of the company’s foundational fermentation technology and has served as the funding source for both Locus Bio-Energy and its sister company, Locus Agricultural Solutions.

Locus Fermentation Solutions

Leadership Team

Andrew Lefkowitz

Co-Founder, Chairman & CEO

Andrew (Andy) is directly responsible for driving the overall strategic direction of Locus FS and managing its related businesses, including investment and venture capital opportunities. He is recognized as an EY Entrepreneur of the Year and a Smart Business Smart 50 Leader (2019) for his entrepreneurial work. Andy previously founded Ganeden Inc., a global probiotic ingredient supplier that discovered a science-backed, shelf-stable microorganism that is used in more than 750 food and beverage products globally.

Sean Farmer

Co-Founder & Chief Scientific Officer

Sean is responsible for envisioning and developing research capabilities, scientific product, and intellectual property. He has partnered with Andy on business ventures for more than two decades, previously co-founding Ganeden Inc., where he acted as chief scientific officer and was responsible for the discovery of best-in-class oral and topical probiotics. He is a microbiologist and fermentation scientist with over 135 issued patents for microbial and related technologies.

Science & Research

Dr. Kenneth Alibek

Senior Vice President,
Research & Development

Dr. Kenneth (Ken) Alibek is the former lead scientific administrator of the Soviet Union’s biological research & development program, and has extensive experience in microbiology and biotechnology. He was named by the BBC as one of the most influential people in the world for 6 years straight, and also received the Barkley medal for his distinguished public service and contributions to world peace.

Dr. Nicholas Callow

Vice President, Engineering

Dr. Nicholas (Nic) Callow has extensive experience in bioprocess engineering, and currently works on developing and implementing new fermentation technology for Locus. His previous projects include designing continuous fermentation to produce low-cost enzymes, creating control systems to modify bio-system behavior, and research into bio-surfactant production and applications.