Senior Strategists

One of the greatest advantages that SIP offers its clients is our uncommon breadth of experience in the strategic, operational, and competitive contexts that organization leaders must navigate every day. With a world view shaped by values and purpose, we deliver the decisive capabilities that help transform your competitive readiness, so you may build a more durable enterprise premised upon authentic value creation.


Art Stewart, M.P.M.
Managing Partner



Tamara Gracon, M.B.A.
Human Capital; DEI&B; Strategy Economics; Conscious Leadership & Governance

  • A highly skilled, technology savvy executive with C-level leadership experience in strategy, process improvement, technology selection and deployment, along with global project management, for a $26B revenue company
    Deep executive experience identifying and resolving complex issues facing organizations in the technology, media, and consumer products industries involving competitive market strategy, operations, tax, transfer pricing (TP), supply chain, and valuation
    Fluent in Lean Six Sigma principles as applied to strategic change management to streamline inefficient processes, harmonize diverse points of view, and provide meaningful ROI to clients on target
    Recognized leadership in numerous contexts focused on advancing DEI&B concerns and opportunities
    Working with companies to embrace ESG as a competitive advantage to drive profit and impact in their market sector
  • Member, National Board of Directors and San Francisco Chapter President, Private Directors Association
  • Advisory Board, How Women Lead Silicon Valley, helping to elevate women’s leadership success including preparing them for board service, promoting gender diversity and board best practices
  • CEO and Founder, TBG Consulting LLC, a strategy and change management consultancy
  • Management Consultant, The Consultants Collective
  • Managing Director – Tax for KPMG LLP. For nineteen years led their Economic and Valuation Services (EVS) including transfer pricing, valuation, and economic analysis
    Advised clients from early stage start-ups to Fortune 100 executive teams
  • Founding Limited Partner, How Women Invest, a gender lens fund with 90% female (and 54% women of color) investors committed to supporting women-founded enterprises
  • Senior Associate, Wheat First Union, Investment Banking
  • Legislative Staff, Congressman John Ensign, who was then active on the Ways and Means Committee
  • Management Program - Oxford University, Trinity College
  • M.B.A., Finance, Georgetown University - McDonough School of Business
  • B.A., Political Science and Economics, University of Colorado Boulder


Peter Hess, M.A.
Sustainable Workforce Development; Sustainability-ESG Strategy, Program Design, and Integration; Materiality Assessments; Standards Alignment

  • 30+ years of expertise in conceiving, planning, and leading corporate transformation initiatives
  • Senior Consultant, Slalom and the North Highland Company (13 years) conceiving, planning, and executing global organizational large/complex projects in sustainability, organization change management, human capital, and Enterprise Performance Management.
  • Owner, Change Partners, Inc. (12 years), overseeing and executing all facets of organizational effectiveness consulting with corporate and business unit executives in matrixed, global organizations
  • Director, Bayer Corporation, and Senior Manager, Nabisco (8 years) designing and implementing organizational effectiveness, planning, and learning initiatives
  • Facilitated and consulted to over 30 union/management teams on workforce development and reskilling across the country as Associate Director, Union-Mgmt. Relations, AT&T Alliance For Employee Growth
    Developed a “Culture of Sustainability” offering to infuse sustainability in all of an organization’s strategy and operations
  • Fostered consensus among disparate stakeholders on the model of the Rutgers University Climate and Environmental Change Initiative
  • Advanced a firm’s net-zero pledge by conceiving and implementing an internal “carbon tax”, including an employee engagement and communication plan
  • Empowered the swift integration of two pharmaceutical businesses by fostering alignment on and project managing an integration plan
  • Helped create a new North American home design business fostering consensus among disparate functional and business unit leaders on their vision, purpose, approach and operations
  • Program Chair, New Jersey Organization Development Network
  • Board Member, Human Resource Planning Group and Philadelphia Region OD Network
  • Committee service with American Society of Training and Development; the National Society of Performance and Instruction
  • Assessor, "Baldrige Quality Award”, Quality New Jersey
  • Instructor at Columbia University and NYU
  • M.A., Human Resource Mgmt. and Labor Relations, Rutgers University
  • B.A., Swarthmore College


Eliza Erskine, M.A.
ESG Analysis; Sustainability and Climate Strategy; Reporting Program Design and Compliance

  • Principal (since 2018) of her independent firm, Green Buoy Consulting, providing ESG program design and implementation services to high-growth companies; clients include Payoneer, Welch's, and OneWorkplace
    Provide holistic ESG strategies, carbon footprint analysis, net zero strategy, and B Corp certification conformance
  • Speaker on ESG topics at various industry events such as those hosted by Terra.do, 500 Startups, the Consulate General of the Netherlands, and the Connecticut Sustainable Business Council
  • Subject Matter Advisor, Good.Lab; Executive in Residence, The Fashioneering Lab
  • ESG Lead, Kara, focused on supporting venture capital investors and technology companies in streamlining their climate disclosures and ESG reporting processes to successfully meet compliance requirements
  • Business Specialist, Federated Investors, providing operational and development support for local government investment pools valued at $76B. Facilitated stakeholder communications in support of daily transactional activity. Analyzed business risks and opportunities to multiple internal groups. Created project and test plans for 25 issues annually; produced a statistics dashboard for reporting
  • Client Service, Massachusetts Municipal Depository Trust, responsible for demonstrating operational and implementation processes for current clients, including participating in business development and project planning within client service teams. Analyzed client behavior; coordinated with sales and trading teams to develop client outreach and acquisition projects
  • Community Business Outreach Coordinator, New Generation Energy, responsible for communicating the local+GREEN program to increase engagement from business owners, communities, and local governments
  • At MSCI (Morgan Stanley Capital International):
    As ESG Client Services Associate, developed expertise in the MSCI ESG product suite and conducted training on multiple MSCI products. Advanced internal projects while concurrently maintaining over 350 client relationships
    As ESG Analyst, covered the ESG metrics of approximately 350 small market capitalization companies to evaluate risk exposure, presented developing issues to the ESG Small Cap team, and provided feedback and edits on over 100 company profiles. Also researched and compiled qualitative and quantitative issues for diversified chemical companies
  • M.A., Sustainability and Environment Management, Harvard University (Extension School)
  • B.B.A, Questrom School of Business – Entrepreneurial Studies & Business Law, Boston University


Keith Darcy, M.B.A.
Disruption & Reputation Risk Management; C-Suite Leadership & Board Development; Ethics Strategy & ESG Compliance

  • Forty-year career as a senior financial services executive, CEO advisor, corporate director, educator, and thought leader
    Extensive experience working with boards and executive leaders across six continents on complex governance, ethics, compliance, regulatory, and reputation risk challenges
  • President of Darcy Partners, Inc., a boutique consulting firm
  • Former independent Senior Advisor to Deloitte’s Risk and Financial Advisory Compliance Program
  • Currently Board Director with the Notre Dame Deloitte Center for Ethical Leadership; Worldwide Stages and its affiliates; and Advisor to an Abu Dhabi sovereign wealth fund
  • Previous Board Director seats include E*Trade Bank and New York National Bank; former Chairman of the Better Business Bureau Foundation, New York, and Board member at the Center for Ethics, Emory University
  • Nine years as Executive Director of the Ethics and Compliance Officer Association (ECOA) as well as Chairman of the ECOA Foundation
  • Earlier career posts include as EVP and member of the Office of the President for IBJ Whitehall Bank and Trust Company; head of consumer banking and corporate finance groups at Marine Midland Bank; CEO of IGM insurance; and CEO for a derivatives trading company
  • Helped Prudential Securities establish the first Ethics Office among Wall Street firms and served on the Global Anti-Corruption Committee of the World Economic Forum
  • Expertise featured in numerous publications, via keynotes and panels at scores of global forums from the UN, the WEF, and the OECD to Harvard’s Kennedy School and the Carr Center for Human Rights
  • Previous academic positions include Associate Dean and Distinguished Professor at Georgetown’s McDonough School of Business; Adjunct Professor of Ethics and Leadership at Penn’s Wharton School; Steering Committee Member for the Chair of Excellency in Law and Business Ethics at Université Cergy School of Law in France; and Chair of the Global Center for Ethics and Social Responsibility at St. Thomas Aquinas College
  • Post-graduate study, New York Theological Seminary
  • M.B.A., Hagan Graduate School of Business, Iona College
  • B.Sc., College of Business, Fordham University
  • Honorary doctorates from Manhattanville College and St. Thomas Aquinas College


Tom C. Hogan, D.M.
Human Capital Management; DEI&B Policy & Program Development

  • Human Capital Management scholar, strategic advisor, executive coach, and EdTech thought leader
  • Internationally recognized SME on business ethics, DEI&B, and socially responsibility
  • Academic posts include Professor of Practice in Human Resource Management, School of Labor and Employment Relations (current), Teaching and Learning with Technology Faculty Fellow (2020-21) and Scholar, Engagement Academy (2019-21) – Penn State University; and Interim Associate Provost, Office of Faculty Affairs as well as Director, Department of Worldwide Faculty Recruitment and Appointments – University of Maryland Global Campus
  • Appointed (October 2021) to the International Organization for Standardization ESG Advisory Panel and the SHRM Blue Ribbon Commission on Racial Equity (August 2020)
  • Collaborating with the World Economic Forum’s “Empowering AI Leadership” initiative to develop an Ethical AI Toolkit for C-Suite executives (May 2020)
  • Twenty-three years in leadership roles managing operations and P&L for AT&T Corporation
    As Director of Strategic Talent Acquisition and Retention Workforce Diversity and EEO/AA:
    Managed the acquisition of culturally diverse talent; ensured development of an inclusive workforce. Crafted the strategy and implementation plan to attract and retain culturally diverse management, professional and technical talent in the US and internationally
    Managed the AT&T Global Employment Brand, representing the company to external stakeholders as well as the Corporate Workforce Diversity and EO/AA functions
    As Senior Employment and Talent Acquisition Manager:
    Developed the employer brand strategy. Managed the Consumer Leadership Development Program. Led the Quality Improvement team responsible for re-engineering process to verify AT&T compliance with immigration laws
  • Finalist, 2021 EdTech Digest Awards – Higher Education Technology Leader category
  • Board Member and Director of Diversity and Inclusion, Pennsylvania SHRM State Council
  • Member, Board of Advisors of Patriapps, a SaaS venture studio firm
  • Awarded Executive Leadership Coaching certificate, Georgetown University Institute of Transformational Leadership
  • D.M., Management and International Relations, University of Maryland Global Campus
  • M.R.P. (Regional Planning)/M.P.A. (Public Administration), Penn State University
  • B.A., Behavioral Sciences, Park College


Matt Karnes, M.B.A./C.P.A.
Financial Materiality Analysis; Valuation Strategy; P&L Modeling; Pro forma Content Development

  • Over twenty-five years of diverse finance and accounting experience, serving clients with independent, institutional quality financial research and analysis
  • Managing Director, GreenWave Advisors, providing comprehensive research and financial analysis for the cannabis industry
    Produces fundamental intel throughout the cannabis ecosystem – including detailed, comprehensive analysis and transparent due diligence reports for fully defendable financial forecasts
  • Analyst, SG Cowen, covering satellite communications
  • Vice President, Equity Analyst (Consumer Internet) at Bear Stearns & Co., where his team was consistently recognized by Institutional Investor as an “All America Research Team”
  • As a sell side equity analyst, authored or and  co-authored numerous industry research reports including for Google, Sirius, XM Satellite Radio, DIRECTV and EchoStar Communications, among others
  • Equity Analyst, Wachovia Securities, covering radio broadcasting and cable television
  • Held various finance and accounting positions at PriceWaterhouse Coopers, Deloitte, and Texaco
    Executed client engagements throughout the U.S., Europe, The Caribbean, and Asia
  • At Chase Manhattan, responsible for implementing corporate accounting policies on commodity, interest rate, and foreign currency derivative products
  • Series 7 and 63 licensee, FINRA/SIPC
  • M.B.A., Gabelli School of Business – Fordham University
  • B.S., Business Administration (Accounting and Finance), Miami University (OH)


Yan Hai, M.A.Sc
Compliance, Quality, Risk and Regulations - SOPs, TQM, FDA, EU-GMP, ISO

  • Over 18 years of progressive experience in the pharmaceutical, cannabis, medical device, and natural health products industries including scientific and quality management contributions to some 300 projects to date
  • Knowledge and extensive experience within a range of quality and compliance matters including cGxPs, FDA and Health Canada drug, cannabis and medical device regulatory standards, and ISO frameworks
  • A track record of success improving quality systems, interpreting new regulatory requirements, fixing gaps between quality systems and regulatory standards, implementing CAPA systems, and advancing quality processes to ensure compliance and cost effectiveness
  • Held a variety of roles with global pharmaceutical leaders including Sanofi Pasteur, Novartis, Taro Pharmaceuticals and Thermo Fisher Scientific
  • President and Principal Consultant – Innova Medipharm, Inc., specializing in regulatory compliance, quality assurance, and cGxPs services for the cannabis and pharmaceutical industries
  • Client engagements include inspection readiness, auditing, SOP development, GMP and ISO qualification, quality management system alignment, deviation investigation, gap assessment and change control programs
  • M.A.Sc, Chemical Engineering and Applied Chemistry & Biomaterials/Biomedical Engineering, University of Toronto, Canada
  • B.Eng., Chemical Engineering, Tongji University, China