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SHAWN SEMONES, PH.D.

EXECUTIVE VICE PRESIDENT, RESEARCH AND DEVELOPMENT AND CHIEF TECHNOLOGY OFFICER

Dr. Semones is a distinguished research and development director whose recent work has focused on the applied discovery of microbial technology for agriculture.

Dr. Semones has more than 18 years of experience at Novozymes Biologicals, Inc., where he helped build its BioAg R&D Application Division. Most recently, he was Director of BioAg R&D Application Development and Novozymes Biologicals Site Lead, directing R&D efforts across three sites within North America, as well as a global field R&D team. He has been the R&D lead for the BioAg Alliance, the strategic alliance between Novozymes and Monsanto tasked with the development of new microbial technologies for agriculture, since its inception in 2014.

He holds a doctorate in biology – plant physiology/mycology from Virginia Tech, as well as master’s and bachelor’s degrees in biology from Virginia Commonwealth University.

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Jarrett Chambers

EXECUTIVE VICE PRESIDENT, MARKETING AND SALES AND CHIEF COMMERCIAL OFFICER

Mr. Chambers is a leading expert in the interaction of nutrients, and the integration of metabolites and bioactivators, in plant physiology. He co-founded ATP Nutrition, a wholly owned subsidiary of Concentric and one of the largest plant nutrient suppliers in Canada. He spearheaded the development of ATP’s System of Chemtrition™, a simplified, easy-to-use, agronomically sound nutritional system for growers.

Prior to establishing ATP Nutrition, Mr. Chambers held lead agronomic technical positions with various multinational fertilizer companies. Through these experiences, he was able to take product innovations such as ESN and Slow Release fertilizers from concept to commercialization. Over the past 18 years, he has focused his efforts on understanding the physiology and interaction of nutrients within the plant. He has leveraged his nutrient knowledge in working in the fruit, vegetable, turf grass and nursery markets, to develop the current ATP Nutrition product line for broadacre crops.

Mr. Chambers holds a Master of Science in Soil Fertility and Microbiology from the University of Manitoba where his research included determining the mode of action of JumpStart and Agrotain technologies.

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David Sisk, CPA, CFM

SENIOR VICE PRESIDENT, FINANCE AND ADMINISTRATION AND CHIEF FINANCIAL OFFICER

David Sisk is an accomplished global finance executive with significant experience in business strategy, process improvement, and merger and acquisition strategy.

Prior to joining Concentric, he held leadership roles in global organizations such as Armaceli, Platform Specialty Products Corporation and Cheminova A/S.

Mr. Sisk holds a master’s in economics from North Carolina State University, and he is a certified public accountant.

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Laura McIntosh, PH.D.

VICE PRESIDENT, PRODUCT RESEARCH AND DEVELOPMENT

Dr. McIntosh is an experienced research and development and product development leader with a background in the pharmaceutical and biotech industries.

She previously held senior management and product development positions at Caprion Biosciences Inc., Osprey Pharmaceuticals Ltd., Advanced Research Technologies Inc. and Argose Inc.

After completing her doctorate in human anatomy and cell biology at the University of Manitoba, she held an NSERC post-doctoral fellowship at the National Research Council of Canada. She holds a Master of Science in Human Anatomy and Cell Science from the University of Manitoba, and a Bachelor of Science in Zoology from Brandon University in Brandon, Manitoba.

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Ron Restum

VICE PRESIDENT, SALES AND COMMERCIAL DEVELOPMENT

Mr. Restum is an accomplished sales and operations leader with vast experience in the plant nutrition sector and greater agriculture industry.

Prior to joining Concentric, he was director of strategic accounts at Compass Minerals International, Inc., where he managed relationships, built partnerships and developed strategic accounts in North America, Europe and Latin America. Prior to that, he led sales efforts as a vice president at Koch Agronomic Services, managing the value-add agriculture products business. He spent more than 30 years at Agrium Inc., (now Nutrien) the world’s largest provider of crop inputs and agricultural services, where he held a succession of sales and operations management positions.

Mr. Restum earned a Bachelor of Business Administration from Western Michigan University.

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TIM STURM

VICE PRESIDENT, GROWTH STRATEGIES

Mr. Sturm is a distinguished senior product, marketing and sales executive, who brings considerable industry experience to Concentric’s global commercialization activities.

He served as Vice President, Consumer Solutions for Koch Agronomic Services, LLC, a $300M plant nutrient division of Koch Industries, Inc., and managed the specialty fertilizer business for the same company as Vice President, Turf & Ornamental Business Unit. Before joining Koch Industries, he held various senior sales and marketing positions with The Coleman Company, Dorel Industries, The Scotts Miracle-Gro Company and Newell Rubbermaid.

Mr. Sturm holds a Master of Business Administration from Emory University’s Goizueta Business School and a Bachelor of Science in Industrial Engineering from Purdue University.

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Mark Trostle

VICE PRESIDENT, GLOBAL REGULATORY AFFAIRS

Mr. Trostle is an expert in federal, state and international regulations for crop inputs.

He most recently directed global registrations and regulatory affairs for Nutrien Retail, where he managed federal and state pesticide registration; state registration of fertilizer, plant nutritional, seed, and adjuvants; and international pesticide, plant nutritional and adjuvant registration in 60 countries. Prior to joining private industry, he spent more than 31 years in various positions at the Texas Department of Agriculture.

Mr. Trostle earned a Bachelor of Science degree in General Agriculture from Tarleton State University in Stephenville, Texas.

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Bonita Sonderby, SHRM-SCP, SPHR, SPHR-ca

EXECUTIVE DIRECTOR, HUMAN RESOURCES

Ms. Sonderby is a skilled human resources leader with demonstrated experience overseeing initiatives in a multi-site operation and implementing policies to engage a talented workforce.

She has over 20 years of experience in human resources, most recently serving as the Director, Human Resources for Visit Denver. She held various previous leadership roles in human resources for companies such as Watermill Express, LLC and United International Holdings.

She holds a Master of Business Administration and a Bachelor of Arts in Business Administration from Columbia College, Missouri. She is active in Board positions at the local chapter and Colorado state level of the Society for Human Resource Management.

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Carolin Chambers

EXECUTIVE DIRECTOR, STRATEGIC MARKETING

Ms. Chambers has spent over 25 years as a leader in marketing, sales and operations within the agriculture industry. Prior to ATP Nutrition, she spent five years with Agri-Trend, one of the largest agronomy service providers in North America, where she led the marketing and business development efforts for agronomic and precision management services. Earlier in her career, she was director of operations for Monsanto Canada, where she was responsible for supply chain initiatives and held various senior marketing positions.

Ms. Chambers holds a Bachelor of Commerce from the University of Manitoba and completed the Executive Development Program at Kellogg Graduate School of Management.