People With a Purpose

We’re driven to create positive change for companies, communities and the environment. 

We’re an experienced team of sustainability strategists, analysts, and reporting and communication experts.

Our multidisciplinary team of experts creates forward-thinking sustainability strategies, programs and communications for clients in a broad range of industries. SustainabilityNext is a woman-owned business led by Ann Tartre, a seasoned sustainability practitioner who has advised organizations on all aspects of sustainability strategy, program development and ESG reporting for more than 20 years.

How we work

Collaborative & Hands On

Think of us as an extension of your team. We partner with you, working side-by-side to dig into the task at hand.

Committed to the Long Term

Our goal is to help you effectively navigate every stage of your sustainability journey, no matter where you are in the process.

Responsive to Your Needs

We bring a balance of industry best practices together with processes that are tailored to your business and culture.

Our Core team

  • Ann Tartre

    CEO & Principal Consultant

    A seasoned leader, Ann brings expertise in corporate responsibility, stakeholder engagement, and social justice issues to the practice, as well as natural resource issues such as energy, climate and water. Ann holds GRI and CDP certifications and an FSA level 1 (SASB) credential.

  • Lena Muntemba

    Sustainability Analyst

    With a broad range of sustainability and ESG subject matter expertise, Lena provides industry research, benchmarking, data analysis and project management support on many of our client engagements. Lena is GRI Certified.

  • Mallory Murphy

    Project/Client Relationship Manager

    Mallory has more than a decade of experience of leading, managing and collaborating with client and project teams, making sure that projects go off without a hitch and clients are informed at every step.

  • Michael Fisher

    Writer & Editor

    Michael specializes in helping purpose-driven brands show the world what they stand for. His experience spans a variety of ESG, sustainability and CSR communications, including annual reports.

  • Pamela Fiehn

    Brand & Content Strategist

    Pamela is a communications professional and brand builder who has been working in the field of sustainability and social impact for more than 15 years. Pamela is GRI certified.

  • Rivers Janssen

    Writer & Editor

    Rivers has more than 15 years of experience specializing in strategic, story-driven writing and editing for sustainability and ESG reports and communications. Rivers is GRI certified.

  • Tyler Wagner

    Brand Strategist & ESG Advisor

    Tyler is a 15-year veteran in the brand purpose space, with extensive experience in corporate sustainability/ESG strategy and reporting. He is GRI and TCFD certified.

Our partners

We’re fortunate to partner with a number of ESG consultancies and communications agencies on annual reporting and other strategic sustainability projects.

Our community

We proudly support several nonprofit organizations that make a positive impact in our local community and around the world.

  • Assist Ukraine is a grassroots initiative that provides medical supplies, protective gear and humanitarian relief to Ukrainians.

    Visit Site

  • The Maine Island Trail Association is a membership organization dedicated to the protection and enjoyment of the wild islands of coastal Maine.

    Visit Site

  • Project Launch is an education-based nonprofit that helps students in the state of Maine make a successful transition from high school to meaningful post-secondary learning and opportunities.

    Visit Site

  • Our Climate Common builds relationships of trust throughout our society so we can get important things done, together, on the ground.

    Visit Site