September 15, 2026 — thinkPARALLAX, a sustainability strategy and communications firm, today announced the strategic acquisition of the sustainability practice from Riveron Consulting, expanding its team, capabilities, and expertise. The acquisition brings senior practitioners to thinkPARALLAX with expertise in regulatory compliance, data governance, CSRD reporting, assurance readiness, investor and LP reporting, technology implementation, emissions calculation, reduction planning, climate risk, and full fund lifecycle support.
“In our 23 years in business, thinkPARALLAX has continued to evolve to meet the needs of the market,” says Jonathan Hanwit, founder of thinkPARALLAX. “Since the beginning, we’ve been committed to helping companies drive positive impact. Today, in this rapidly evolving industry, we recognize that expanding our capabilities ensures we can continue to serve that purpose and be long-term, strategic partners for clients.”
The combined team provides end-to-end sustainability support with one integrated company:
Strategy Development & Advisory
Data & Compliance
Strategic Communication & Engagement
Investor Support
thinkPARALLAX will continue to operate as a senior team in which the same practitioners handle a client's strategy, technical, reporting, and communications work from start to finish, a model built for companies that need advisors who can move as reporting requirements change, without the handoffs of a larger consultancy. With the new team members, thinkPARALLAX can bring the resources of a larger firm with the high-touch service of a boutique.
For thinkPARALLAX’s existing roster — more than 60 active clients, including some of the largest brands in North America — the expansion means deeper support without a change in the relationships they already have. Clients who came to the firm for a sustainability report or communications platform can now add emissions accounting, compliance readiness, or assurance preparation to the same engagement. Clients arriving from the Riveron practice gain access to strategy, brand, creative, and campaign capabilities that turn technical work into stakeholder engagement.
The expansion builds on a client relationship record that is unusual for the category: 90% of thinkPARALLAX clients renew annually, and the firm holds a world-class client Net Promoter Score of 88.
For more on the evolution of the business, read Hanwit's recent article.
Alongside the acquisition, thinkPARALLAX announced an expanded leadership team:
"In my 13 years at thinkPARALLAX, I've helped lead the company through several strategic pivots as the market moved," says Janna Irons, CEO of thinkPARALLAX. "This moment asks more of companies than any I've seen. Leaders have to be clear about why they are investing in sustainability, rigorous about how they drive impact, and deliberate about how they communicate it — so the work moves revenue, cost, risk, and reputation. The team we have assembled is built to guide companies through all three."
For more on the evolution of leadership, watch this video with Irons and Hanwit explaining the changes.
The acquisition also establishes a private equity and portfolio company practice, supporting investors from fund-level policy and LP reporting through pre-close diligence, portfolio company onboarding, ownership-period value creation, and exit preparation, including independent sell-side diligence and ESG readiness for public markets.
“I’ve spent almost a decade advising private equity investors and their portfolio companies on integrating sustainability throughout the fund lifecycle,” says Brian Chmelik, Head of Growth at thinkPARALLAX, who led the sustainability practice joining the firm. “Creating lasting value at portfolio companies requires analytical rigor, commercial acumen, and a strategic approach to managing stakeholders. The thinkPARALLAX team’s work with the most discerning investors and companies shows their ability to create value in that context. I'm looking forward to bringing our combined capabilities to our clients."
For more on how thinkPARALLAX can support private equity and portfolio companies, visit our Investor Support service page.
thinkPARALLAX is a sustainability strategy and communications firm. For more than 23 years, the firm has helped many of North America’s biggest brands meet their regulatory obligations, build credible sustainability programs, and turn that work into business value. thinkPARALLAX pairs senior advisors, data and compliance specialists, and communicators on the same engagement — so that strategy, technical rigor, and the way the work gets communicated are never handed between firms. thinkPARALLAX has been a Certified B Corporation since 2016. Learn more at thinkparallax.com.
John Davies
Content Director, thinkPARALLAX