SinCo - Sustainable Investment Consulting LLC- designs global sustainable investment architecture using a principal consultant and a network of  project-specific talent. All our solutions are tailored to the client and circumstance, all are bespoke. We do just a handful of projects every year, and do them excellently. What tough questions at the frontiers of sustainable investment can SinCo help you answer?

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Small team with agile ability

SinCo's flat business model with regional and domain expertise is best suited to the demands of global asset management businesses: it is nimble, lean, tailored, and global. SinCo is able to deliver results for institutional investors (pension funds, asset managers, investment advisors), stock exchanges, asset consultants, policy-makers, private bankers, family offices and investment service providers. Mission to design for sustainable investment SinCo designs the investment architecture for a sustainable world that makes the investment case for long-term performance by integrating externalities. SinCo has grown to be an agile advisory team delivering high-value, high-impact investment services. On these pages, you can find more information about SinCo’s services offerings, our principles, history, company culture and team. A lot has changed since 2006. But some things have not changed: our dedication to our clients and our belief in the possibilities of the sustainability to advance the practice of asset management and institutional investment.


Graham Sinclair


Graham is Principal at SinCo LLC - Sustainable Investment Consulting LLC. At SinCo LLC he leads engagements to design and develop the sustainable investment case for clients managing billion dollar investments or global investor initiatives integrating environmental, social and governance (ESG) factors into investment strategies. Whether working with international organizations, pension funds, family offices or private equity funds, he creates original designs, learns from his failures, and ends each day smarter. Before joining KLD in Boston, he worked in investment banking and managed private sector pension funds at Alexander Forbes, Old Mutual and Nedcor Investment Bank, exiting global multi-manager SEI Investments in 2002. Graham chaired the Prudential Assets Working Group of the investment industry group ASISA that co-designed the world class Regulation 28 ESG guidelines for pension funds in South Africa in 2012. A respected commentator on media platforms including @esgarchitect (a SustMeme Top 200 influencer) and TriplePundit, Graham sits on expert panels for Globescan, McKinsey and Greenbiz, advises the Yale Dwight Hall SRI Fund and is a GRI Focal Point Africa Advisory Group member. A Senior Fellow of the Environmental Leadership Program and Net Impact Lifetime Member, he co-launched Net Impact Boston in 2005 and in 2009. Graham lectures on sustainable investment at leading business schools globally, most recently at Duke Fuqua MBA, and has contributed three chapters on Private Equity, Africa and Sustainability Indexes to "Evolutions in Sustainable Investing" (Wiley Finance, 2011). He presented his big idea "Investing As If The Future Matters" at TEDxTableMountain, listed as one of the CFA Institute’s “sustainable investing - five videos to watch” in September 2014, and in September 2015 peer-reviewed the CFA ESG 2015 Handbook. Graham holds an MBA from the Villanova School of Business and LL.B from the Howard College School of Law, as well as various professional studies in investment and sustainability, including the inaugural cohort of the WWF One Planet Leaders Programme in Switzerland. He resides in Vermont, USA and Cape Town, South Africa. On any day he would rather be cycling a mountain pass.  

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Debbie Petterson

Project Accounting

Debbie is project accountant  at SinCo. She leads the financial administration and project fundamentals to support the team's wotk for our clients globally.

Laura Plourde

Legal Advisor
Pabian & Russell LLC

Laura is legal advisor to SinCo. For SinCo she supports the firm by providing advice on legal, contractual and terms of reference matters, and supports the efficient running of the firm and SinCo's projects with our clients.

David Prothero

Financial Advisor
David J. Prothero, CPA, P.C

David is financial advisor to SinCo. For SinCo he supports the firm by providing support on accounting, auditing, tax and financial matters, and supports the efficient running of the firm and SinCo's projects with our clients.


When hiring SinCo, the project team is led by the ESG architect, with a project team of analysts and/or advisors from our network of partners who are allocated to your specific project needs. The project team is selected from a partner cohort of talented investment and sustainability professionals, including graduates of leading business and policy schools. The project team matches the culture and challenges of each client with the right personnel over the project time horizon.

SinCo maintains a small core team and an international network of colleagues who collaborate on specific client projects ranging from design of investment products, to reporting on PRI assessments, to building sustainability and ESG indexes, to primary research on barriers and opportunities for sustainable investment in frontier markets. Project partners may include investment practitioners, political and environmental economists, research academics, think-tanks, marketing and public relations experts, evaluation & performance professionals, collaborating NGO initiatives, legal advisors and compliance counselors.


SinCo welcomes new talent into the sustainable investment space. If you are interested in intellectually challenging work at the cutting-edge of sustainable investment, responsible investment, impact investing and integrating ESG into investment practice, we invite you to send a short motivation letter [maximum 300 words] and a one-page resume [include city, time zone, and language capabilities] and one-page biography to info[at]


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