04 — About Us ABOUT US


More Than Brokers

Our team of aviation experts and solutions enthusiasts go above and beyond to ensure your success.

Our Team

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Brian Proctor

President and CEOHeadquarters

Brian Proctor is the founder, President, and CEO of Mente Group, LLC. He founded Mente in 2009.

Brian has been serving private aviation clients for over 19 years. Having been involved in over $8 billion in aircraft transactions and over $7 billion in aviation business planning, Brian’s experience is sought by corporations and individuals, worldwide.

After serving for six years in the US Army as an infantry Ranger and intelligence officer, Brian left the military to pursue a career in the private sector. After working at Transamerica Corporation, Mr. Proctor served as consultant, COO and President of the world’s second largest consultancy and broker/dealer.

Brian serves on boards for: International Aircraft Dealers Association (IADA), Jet Aviation Advisory Board, and formerly, the Frontiers of Flight Museum in Dallas. He also previously served as President of IADA. He holds a BA degree in International Studies in Politics and Diplomacy from the University of Richmond and an MBA from Southern Methodist University.

Cameron Gowans

Vice President of StrategyHeadquarters

Cameron Gowans is the Vice President of Strategy at Mente Group, LLC.

Cameron has over 30 years buying, selling and operating business jets for large corporations and high net worth individuals based in North America and operating around the globe.  Most recently, he was President of Jet Linx Chicago, opening the new base for the company.  Prior to that role, he served as the Vice President of Sales and Marketing at JetSuite.  His previous roles include Vice President, Sales at Embraer Executive Jets and Chief Marketing Officer at Flight Options, one of the largest private jet services company offering a fractional jet and membership program then owned by Raytheon Company. He also worked at Delta Air Lines, United Airlines, Gulfstream Aerospace, Bombardier Aerospace and the Cessna Citation program in management, sales and marketing from 1991 to 2004.

Mary Belken

Marketing ManagerHeadquarters

Mary is the Marketing Manager at Mente Group, LLC.

Mary manages all of the corporate brand and aircraft marketing, advertising, public relations and all event planning. In addition, Mary supports the operations of Mente Group's aircraft transactions business.

Prior to Mente Group, Mary managed the marketing efforts for several other companies in industries including healthcare and direct mail advertising as well as being a business owner.

Mary earned her Bachelor of Arts in Journalism/Advertising from the University of Oklahoma.

Tracy Yeager

Executive AssistantHeadquarters

Tracy Yeager is the Executive Assistant at Mente Group.

She attended Midwestern State University, Texas Christian University and the University of North Texas.  She grew up in Texas and is blessed with an awesome family, including two sons.  Tracy has extensive administrative experience and is thrilled to be back in the Aviation Industry and working with such an amazing team!

Sandy Carter


Sandy is responsible for Accounting/Finance, Human Resources, IT and Legal at Mente Group. She has 30+ years of accounting, finance & operations experience, incl. 10+ years in aviation.

Prior to joining Mente, she was the Accounting Manager at Leading Edge Aviation Solutions, LLC. Sandy has also held positions as Accountant, Credit Analyst and Investment Analyst in the non-profit, banking and insurance sectors.  She also manages her own business where she helps companies set up their accounting departments and processes.

Sandy holds a BSBA in Finance from Southeast Missouri State University.

When not working, Sandy enjoys outdoor activities and spends time hiking and zip-lining.

Jim Lewis

Managing DirectorWest

Jim Lewis is the Managing Director of the West Coast at Mente Group, LLC.

Jim is a 45-year aviation industry leader with 24 years in operations & 21 years in aircraft sales/marketing/business development.  His experience ranges from early days as a freight/charter pilot and regional airline captain, to chief pilot/flight department manager, to Beech Aircraft/Galaxy Aerospace sales demonstration pilot, sales manager, director and vice president.  Jim’s sales and marketing tenure includes successful careers at marquis OEMs with more than $2.5 billion in aircraft transactions.  He spent 16 years serving as the U.S. West Coast Director for Galaxy/Gulfstream and 2 ½ years at Embraer – responsible in each position for business development and new/active accounts, leveraging his strengths in aerospace technical aspects, aircraft operations, brand building and developed an extensive list of long term customer relationships.

Jim is a member and active with NBAA, CBAA, the Columbia Aviation Association, the Cascade Aero Club, the Cirrus Owners and Pilots Association, the Oregon Pilots Association, and is a frequent industry presenter-speaker.  An active aircraft owner with an Airline Transport Pilot license, 8 type ratings, and over 10,000 hours of flight time, Jim volunteers his time and airplane for Veteran’s Airlift Command and Challenge Air missions.

Jim holds a Master’s degree in Aeronautical Science (Management Specialization) from Embry Riddle Aeronautical University and a Bachelor’s degree in Natural Science from Florida Southern.  Jim serves twelve western states, western Canada and the Pacific region for Mente Group from his base in Portland Oregon, and enjoys flying, cooking, travel and golf.

David Coppock

Managing DirectorCentral

David Coppock is the Managing Director of the Central U.S. at Mente Group, LLC.

Prior to Mente Group, Coppock was Chief Operating Officer (COO) for SmartTray International. International is the leader in BYOD platforms for PEDs (personal electronic devices) serving the airline, rail & bus, and automotive industries. Previously he served as Vice President of Hawker Jet Sales for Hawker Beechcraft in the Western United States territory for 3 years.

His experience includes more than 25 years in marketing, sales, and flight operations of business and commercial turbine aircraft. Prior to Beechcraft, he was with Gulfstream Aerospace for 7 years as Regional Sales Director for the Western Rocky Mountain Region where he sold the entire Gulfstream jet product line, including the commercial launch of the award winning G650 super long range aircraft. Coppock also spent two years in the private client wealth industry as a Vice President for Sanford Bernstein/Alliance Capital. He conducted his financial training in New York City where he successfully passed the exams for the Series 31, 6, and 7 licenses and subsequently managed portfolios out of the Dallas, TX office. Coppock worked for Bombardier Aerospace as a sales demonstration pilot type rated in the Global Express, Challenger 604, and Lear Jet series aircraft. His professional flying career started as a pilot in the United States Air Force and Air National Guard, flying the T-37, T-38, and F16C aircraft. He also holds type ratings in the Falcon 900 and BBJ aircraft.

Coppock received his bachelor’s degree in political science and marketing from the University of Iowa in 1988 and he is married with two children. He is also a board member on a non-profit organization based in Paradise Valley, Arizona.

Neil Kunycky

Managing DirectorEast

Neil Kunycky is the Managing Director of the East Coast at Mente Group, LLC.  

He came from FlightSafety International, where he was a National Sales Director assisting senior management.  Prior to that, Neil enjoyed a 33-year corporate aircraft sales career with Beechcraft, Hawker and Bombardier, earning numerous sales awards and more importantly the respect and repeat business of his customers.   Neil holds a B.S. in Economics from Southern Illinois University where he was a member of the National Championship winning precision flight team.   Neil is a King Air qualified Commercial / Instrument rated pilot and will office at Hanscom Field outside of Boston.

Brian Hammer

Vice President, TransactionsPlanning & Transactions

Brian Hammer is Vice President of Transactions at Mente Group, LLC.

In his role, he is involved in business aircraft acquisitions, sales and leasing activity, basically all aspects of aircraft transactions.  Previously, he was Vice President overseeing the technical aspects of aircraft transactions, including inspections, pre-buy inspections, completions, and aircraft modifications.

Hammer has a broad-based background in aviation and has been involved in many transactions since joining the company in 2009.  Prior to Mente, he was a technical consultant at another aircraft brokerage and consulting firm. 

Hammer's 28-year aviation career includes serving as an Aircraft Technician in the United States Air Force, in corporate aviation as a maintenance supervisor for a leading 135 certificate holder and Director of Maintenance for a Fortune 200 flight department.  Hammer holds a B.S. in Business Management from the University of Phoenix.  He is located at the company's headquarters in Dallas.

Ken Hart

Vice President, TransactionsPlanning & Transactions

Ken Hart is the Vice President of Transactions at MENTE Group, LLC.

He is responsible for managing aircraft acquisition and disposition transaction activities for the company’s Gulfstream and Turboprop clients. Ken’s specific areas of transaction expertise include – Aircraft Market Research and Value Analysis, Planning and Managing Aircraft Sales Campaigns, and Planning and Managing Aircraft Acquisition Projects. He brings strong cross-border experience to MENTE Group with import and export transactions to-and-from Europe, Australia and North America.

He joins the firm following 6 years with Hagerty Jet Group as Executive Vice President, 3 years with Welsch Aviation as an associate broker and several years as an entrepreneur where he founded and operated several successful businesses.

Ken holds a B.S. in Business Administration, with a Major in Marketing from NYIT, Old Westbury, New York. He works from MENTE Group's headquarters in Frisco, Texas.

Cole White

Vice President, TransactionsPlanning & Transactions

Cole White is the Vice President of Transactions with Mente Group, LLC.

Cole was recruited to play baseball at the United States Military Academy at West Point, where he was selected as an All American.  Upon graduation, Cole was drafted to play professional baseball by the Pittsburgh Pirates.  Prior to beginning his baseball career, and in order to fulfill his service requirements, Cole served for two years as an Armor Officer in the United States Army.  He was then chosen to participate in the Selective Service Program, allowing him to pursue his life-long passion for baseball.  After three years within the Pirates’ minor league organization, Cole retired from baseball and entered the private sector.  Prior to joining Mente Group, Cole served as the lead Industrial Buyer for Gold Metal Recyclers in Dallas.

Cole earned a Bachelor of Business Administration Degree in Systems Management with a focus in Systems Engineering from the United States Military Academy at West Point in 2008. He and his wife Jessica reside in Dallas.

Mariana Santos

Vice President, Strategic ConsultingPlanning & Transactions

Mariana Santos is the Vice President of Strategic Consulting at Mente Group, LLC.

Mariana brings 15 years of solid experience with aircraft OEMs, both in business and commercial aviation. Over the course of 8 years at Embraer Executive Jets, Mariana held multiple positions. Initially, as Product Strategist, she would build and recommend aircraft short- and long-term roadmaps. Later, she served as Sr. Sales Engineer in North America, developing aircraft technical and economic analysis in support to Sales. More recently, she co-created and managed their analytics-based fleet evaluation program tailored to Corporate Flight Departments. Between 2004-2010, she served as a Flight Operations Engineer at Embraer Commercial division where she would liaise with customer airlines’ Flight Operations and Operations Engineering teams, providing day-to-day technical support to a growing fleet of regional jets. Prior to Mente, she briefly ventured into the commercial supersonic world with Boom, the Denver-based start-up.

Mariana is a Brazilian native and has been in the US for the past 8 years. She earned her MBA degree in 2014 from Hult International Business School at San Francisco and her Bachelor of Science in Aeronautical Infrastructure Engineering in 2003 from ITA (Instituto Tecnológico de Aeronáutica), Brazil's most prestigious engineering institution.

Vince Restivo

Vice President of Program ManagementOperations

Vince Restivo is the Vice President of Program Management at Mente Group, LLC. 

Vince has 37 years experience in business aviation starting with Gulfstream Aerospace in 1984. Over the next 25 years, he contributed successfully in various roles of increasing responsibility with Gulfstream, from Initial Phase Manufacturing to Flight Test to Completion Integration and Test Engineering, Vince gained vast experience and knowledge in avionics and cabin systems design, integration, connectivity, test and certification.

With the logarithmic advances in business aviation technology, Vince moved to Completion Sales, where the need for a strong technology background coupled with the ability to connect with customers was essential. Helping customers navigate the vast array of integrated high-tech systems as well as voice and data communications options became a refined skill that aligned with his passion to help people. With the importance of the aircraft interior becoming a priority in the purchase decision process, his combined avionics, technology and interior knowledge allows him to seamlessly communicate with customers from
the C-suite to the hangar.

While Director of Completion Sales, his passion for excellence in the customer experience and a discriminating eye for detail and quality led him to implement further enhancements in process, product offerings and systems capabilities. Vince actively participated in the development of Gulfstream interiors,
cabin systems and completion process from the G-IV to the G650.

Leveraging his ability to quickly perceive customer needs and bridge the technology and interior systems gap, Vince was appointed Regional Vice President - Aircraft Sales for Gulfstream based in Singapore.

Recognized for his knowledge and experience in business aircraft interiors, technology, connectivity, design, process and customer experience, Vince was appointed Vice President – Completions for Hawker Beechcraft Corporation. Following the successful transition of the Hawker Completion Center in Little Rock, Vince founded Addo Virtus Advisors, an advisory firm specializing in completion management, business process and metrics focused on providing both operational and transactional value throughout the aircraft acquisition and ownership life-cycle.

Vince holds AS Degrees in Electronics Technology and Avionics. He has served as a panelist for the Arkansas Governor’s Aerospace Summit, been interviewed for various trade publications, appeared on “Wealth in the Sky” TV program focused on business aviation and has written white papers aimed at making technology understandable at the user level.

Vince and his wife Cynthia have three adult children and four grandchildren.

Donald L. Hammer

Vice President, Technical ServicesOperations

Don Hammer is the Vice President of Technical Services at Mente Group, LLC.

Before Mente Group, Don was VP, Technical Services for Leading Edge Aviation Solutions. Prior to Leading Edge he was Director of Maintenance for Dresser Industries, Inc., a Fortune 200 oil services company based in Dallas, Texas. During his corporate aviation career, Don has held positions of Aircraft Mechanic, Flight Mechanic, Type Rated Flight Engineer, Quality Control Specialist, Maintenance Supervisor and Director of Maintenance.

Having been a part of one of the industry’s best flight departments for 23 years and consulting to corporate aviation for over 14 years, he has the knowledge and skills to advise clients on virtually any aviation-related matter. As a consultant, Don has been involved with the completion processes of in excess of 150 private aircraft ranging in size from Citation to Boeing. He is also an IS-BAO certified auditor with a thorough knowledge of not only the US FARs, but also EU Ops, OTAR’s, and EASA regulations. He not only provides worldwide IS-BAO audit services, but also “best industry practices” types of safety reviews and audits of management companies and flight departments and has been called on to serve as an Expert Witness in several aviation related cases.

Don has been selected by industry leaders to serve on several aviation boards. These have included being a Customer Moderator for the Gulfstream IV session of the annual Gulfstream Workshop, being a member of the Cessna Citation X Advisory Board, and serving as a member of the Gulfstream V MSG-3 Maintenance Planning Committee. He is a licensed A&P Technician and Private Pilot that enjoys flying light aircraft and gliders as often as he can. He has built up a considerable amount of experience since entering the consulting field and, through Mente Group, continues to provide his special talents to corporate aviation.

John Shilstone

Associate ConsultantOperations

John is an Associate Consultant at Mente Group, LLC.

John is an aviation industry leader with over 26 years of corporate aviation experience. He has a well-rounded operational and business background and has held numerous leadership positions ranging from establishing an upstart FBO and aircraft sales company as the Managing Partner, to serving in both the Chief Pilot and Director of Aviation leadership positions of large flight departments at Fortune 500 and Fortune 200 companies, to progressing outside of the aviation industry and serving the Fortune 200 Enterprise core business as a Director supporting business improvement and innovation.

John’s experience and servant mindset afford him the ability to provide tailored consulting services to Mente business aviation clients including strategic business alignment assessment, start-up development and execution support, interim operational management, fleet planning, feasibility studies, budget development, operational efficiency and safety audits, M&A strategic planning & support, aircraft acquisition/disposition support, and E2E operational infrastructure and system assessment and analysis.

In addition to John’s leadership experience he is also an accomplished aviator and holds an Airline Transport Pilot license with 6 type ratings and has served on and participated in numerous industry boards and committees to help develop and advance best practices and increase safety. He holds a Bachelor of Science degree in Professional Aviation with a business minor from Louisiana Tech University and completed the Managing the Corporate Aviation Function program at the University of Virginia, Darden School of Business.

Jeff Dorrough

Vice President of Asset ManagementAppraisals & Forecasting

Jeff Dorrough is the Vice President, Asset Management with Mente Group, LLC.

He is the lead appraiser and consultant for internal clients, as well as, external assignments.  Jeff is a Senior ASA appraiser with the American Society of Appraisers in the field of Machinery and Technical Specialties with fifteen years of experience with business aircraft.  Jeff is also a graduate of Southern Methodist University with a major in Finance from the Cox School of Business.

Mr. Dorrough was previously the Asset Manager and lead appraiser for Bombardier Pre-Owned Aircraft Sales from 2002 thru 2015 where he was directly responsible for managing the asset portfolio and valuation process.  He was responsible for performing all aircraft valuations including, Comparable Analysis, Trade Value Calculations, Residual Value Projections, and Damage Assessments, while providing quarterly market commentary.  Mr. Dorrough was instrumental in the writing and negotiation of trade policy for Bombardier Pre-Owned Aircraft Sales, and assisted in the creation of damage assessment criteria which has been adopted by ASA for their education curriculum, as well as, several private industries.

Mr. Dorrough conducts speaking engagements and is very active in many business aircraft societies such as: NARA, NBAA, NAFA and his local chapter of ASA located in Dallas Texas.

Craig Cox

Director of Asset ManagementAppraisals & Forecasting

Craig W. Cox is the Director of Asset Management at Mente Group, LLC.

Craig is a Senior ASA appraiser with the American Society of Appraisers in the field of Machinery and Technical Specialties with thirteen years of experience with business aircraft.

Craig’s involvement with aviation stems back to where at the age of 17 he started taking flying lessons. During his flight instruction time, he worked at the Aurora Airport as line personnel.

As his interest evolved in aviation, Craig attended Rock Valley College in Rockford, Illinois, Airframe and Powerplant program. He also attended Waubonsee Community College for Business Development.

He began work at Aurora Avionics rigging and wiring Avionics for various aircraft until the industry started taking a down turn.

Craig went on to manufacturing management for ITW/Simco, a Fortune 500 company where he developed and refined his skills in sales and marketing. He was responsible for developing and maintaining a representative/ dealer base throughout the Midwest and Western United States. He worked closely with engineering in designing Ultra-Violet and Electrostatic equipment.

Mr. Cox was previously the COO and senior appraiser for SAI Valuations, LLC from 2005 thru 2018 where he was directly responsible for managing the valuation process.  He was responsible for performing all aircraft valuations including, Comparable Analysis, Residual Value Projections, and Damage Assessments.

Mr. Cox has appraised more than 4500 aircraft and/or aviation related assets with a total appraised value of over 20 billion dollars.

Mr. Cox conducts speaking engagements and is very active in many business aircraft societies such as,  NBAA, NAFA and his local chapter of ASA located in Chicago, Illinois.

Peter Finseth

Director of Business AnalyticsAppraisals & Forecasting

Peter Finseth is the Director of Business Analytics at Mente Group, LLC.

Prior to joining Mente, Peter worked in the Financial Services industry for 20 years with a focus in the mortgage industry for the last 15 years. Most recently, he worked at Fannie Mae as a Senior Business Analyst supporting the REO Valuations business. Peter has a broad background including Financial Planning & Analysis, Financial Modeling, Business Intelligence tools, and programming experience.

Peter earned his Bachelor of Business Administration degree from the University of Texas at Austin. While working full time, he later earned his MBA from the University of Texas at Dallas. Peter is an active member of the North Texas soccer community. He started his own soccer club back in 2008 and actively coaches teams ranging in age from 10 to 17 years old.


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