Transform

ideas

into

growth.

Helping you unlock your organization’s potential with strategic consulting every step of the way
available for new projects

Assemblage is not only about evaluation, research and strategy consulting. It’s about relationships, values and lasting change.

With over 15 years of award-winning consulting and strong, enduring partnerships, we have worked with diverse organizations to create lasting impact in the sectors of philanthropy, public health, education, government and business.
Planning and Execution
While assemblage references a collection or a gathering of people, it also speaks to a work of art, or a new creation that is made by bringing together seemingly unrelated components. Assemblage Advisement and Consulting is about integrating deep insights and data-driven decision making to create newer, stronger and more aligned solutions.
Evaluation and Assessment
We help our partners engage deeply with the challenge of transformation through responsive and rigorous evaluation and assessment.  We recognize that today’s world is uniquely challenging, yet the need for growth and transformation is timeless. As individuals, and as organizations, we must be ready to accept, adapt, and evolve in a changing world.
Pressure Testing
Whether at the organizational, coalition, collaborative or program level, the success of a strategy cannot be truly confirmed until it is tested. We will help you pressure test your work using proven strategies and tools so your organization is prepared for unexpected challenges.

Assemblage isn’t just advice; it’s a partnership for progress

about us
clients

Partners and Clients

Annie E. Casey Foundation

John D. and Catherine T. MacArthur Foundation

W. K. Kellogg Foundation

Kresge Foundation

Council for State and Territorial Epidemiologists (CSTE)

William T. Grant Foundation

High Demand Career Initiative

Agnes Scott College

Technical College System of Georgia

testimonials

Don’t just take our word for it

Association for Spiritual Integrity

Kaua’i, Hawai’i
“In an ideal world, every social change not for profit organization can benefit from the objectivity and insight that Osa brings. She thinks outside of the box while considering both macro and micro viewpoints as was illustrated by her capacity to simultaneously address both our stakeholders' needs and our organization’s needs. Her ideas and innovative solutions were always in alignment with the mission of our organization. And she has an innate understanding of initiatives that work for social change.I can highly recommend Assemblage’s work as a consultant for not for profit organizations,particularly organisations that are engaged in social change.”
Jac O’Keeffe
President and Co-Founder
“Throughout our project, it was evident that the Assemblage team understood the needs of foundations and was committed to helping Girl Up improve our ability to execute our mission. I was impressed by the excellent standards of our Assemblage project managers—especially their willingness to solicit feedback and understand our goals. We’ve already been able to incorporate recommendations from our evaluation into our campaign strategy and see the direct impact of our project together.”
Julie Willig
Senior Grassroots Officer, United Nations Foundation, Girl Up
“Huge thanks to Dr. Osa Adajan and the Assemblage Advisement and Consulting team for your amazing work this year! We really appreciated your collaboration as we built out the Reboot work. We have greatly valued the level of professionalism and wise perspective you have brought to this work. In addition to your deep expertise, we have genuinely enjoyed working with you and the Assemblage team.”
Celeste Jalbert
Former Senior Director, Programs, Reboot Representation
“Assemblage Advisement and Consulting really took the time to understand both our goals and the realities we would face in trying to achieve them. My previous experience with external evaluators had been a real struggle with an unwillingness on their part to make things work for the people involved in the program being evaluated and within a specified budget. In contrast, Dr. Adajan and his team have prioritized the people involved, set out a reasonable and achievable plan and taken enormous pressure off of me as a project director. They also embrace that fact that “things change” and have provided the kind of flexibility that my projects have required.”
Dr. Lisa Dierker
Director of Pilot Programs, Wesleyan University

Community

Foundations

Education

Policy

Environment

Business

Evaluation

Research

industries

We support communities with ease and excellence

A woman in a dark jacket with a white shirt standing in a small library

Nonprofits

Each of your clients has a story to tell about their experiences with your organization. We value the opportunity to help them share their feedback with you so that you can better meet their needs.
Four people gathered around a laptop

Foundations

Assemblage works with foundations to ensure that the resources they invest are truly making a difference.
Students sitting near a laptop and notebook

Education

Assemblage can assist you in your efforts to evaluate your institution’s progress and improve the quality of educational programs.
about us

We're ready to help.

The Founders
Dr. Osa Maiyanne Adaján (President) and Dr. Ajíṣafẹ́ Ẹkúndayọ̀ Adaján (Vice President) founded Assemblage in 2009. As leaders of Assemblage, a community- and people-centered firm, they have a more than 30 years of combined experience consulting with philanthropic and nonprofit organizations, educational institutions, government agencies, and businesses to understand and increase their impact. As award-winning researchers and consultants, they lead a national team of experts and partners who are strongly committed to excellence, authenticity, and responsiveness. Together, their customized approach has won the company more than five awards in sectors from education, to government, to business.
Our Values
  • Responsiveness. We continually communicate with our clients and partners to ensure a shared understanding of what is needed and where they want to go.
  • Rigor. We are committed to excellence in everything we do, from the smallest projects to the biggest, from implementation to completion.
  • Reimagining. We work with our partners to expand their vision of what is possible. We never limit ourselves to the status quo.
Our Team
Our team is comprised of more than 20 experts. From evaluators, to community psychologists, to strategic advisors with global expertise, our deep bench of specialized and global leaders will ensure a successful and impactful partnership. Contact us today to discuss your needs.

Partner

with

us

today.