
Brianne is a trusted advisor to executives and boards, providing specialized audits and support that bring clarity, opportunity, and risk mitigation to leadership teams. She uniquely integrates analytical assessment with higher-level strategic outlooks to translate complex dynamics into tangible insights that drive better governance and performance.
Prior to co-founding Clear Sphere Partners, Brianne worked twelve years at a Fortune500 company in business management, supply chain, and engineering development. She worked for two years at a leading industry institute advancing leadership councils for HVACR manufacturers and directing sector teams. She currently serves on a local audit committee performing contract reviews and policy input.
Ms. Santarelli is educated with an MBA in Finance from Lehigh University, a bachelor's degree of science in mechanical engineering from the Pennsylvania State University, and a green belt certification in Lean Six Sigma continuous improvement. She is an alumna of Wharton's "Boards that Lead" program and actively served on various volunteer and advisory boards.
Her contributions have garnered career and leadership awards from esteemed organizations such as the American Society of Mechanical Engineers, the Society of Women Engineers, the Pennsylvania State University, and Lehigh University.
Outside of work, Brianne enjoys running and skiing (on mountains where one can stop to catch their breath, though the view takes it away) and treasures time spent with her family.

VP, Government Affairs/Sustainability
ASHRAE Executive Leadership

Board Member
CHRO and Transformation Expert

VP and CTO
PE Licensed, Consultant

Entrepreneur and COO
Strategy and Consultancy Expert

VP, Associate General Counsel
Corporate Law Expert

Board Member
Engineering Leadership Expert

PE Licensed, Retired
Engineering Leadership Expert

Board Member and Consultant
Growth and Controller Expert

Suesal leads Arieli & Company, the premier partner for transformational leaders in turbulent times. Sought-after by Fortune500 companies, Arieli & Company builds tailored leadership programs designed to maximize leadership teams' ability to deliver transformational change. Opportunities the firm helps with include organizational shifts, moments of crisis, and psychological safety.
Suesal founded Arieli & Company in 2014 and has been leading it for over 10 years. She specializes in - and has led - numerous projects of global scope. Suesal is a trusted long-term advisor to Fortune500 executives.
Suesal has an MA(Oxon) in Philosophy, Politics, and Economics from the University of Oxford, and an MSc in Organizational/Industrial and Business Psychology from University College London. She is a certified Executive Coach by the Hudson Institute of Coaching in Santa Barbara, and holds qualifications in psychometric assessment and analysis.

Clear Sphere Partners collaborates with Arieli & Company for organizational shift support.
C3 Board Alliance is an invitation-only membership organization helping CFOs, CHROs and General Counsels interact most effectively with their board, and with each other.
The Alliance has been a launchpad for C3 executives receiving board invitations.
The Alliance provides data, insights and examples of how other boards respond to specific challenges.

Clear Sphere Partners is a proud participant of the C3 Board Alliance, staying up to date on the latest best practices and happenings at top companies.
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