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Mergers and Acquisitions

Schellman Expands Sustainability Reporting Services with Acquisition of Sustas LLC, ISO 14001 Accreditation

As part of the transaction, Sustas’s clients and personnel will join Schellman, further strengthening the firm’s ability to deliver tailored, industry-leading sustainability compliance, consulting, and assurance solutions.

Schellman Compliance, a provider of compliance services, has announced the successful acquisition of Sustas LLC, a firm specializing in sustainability reporting services. As part of the transaction, Sustas’s clients and personnel will join Schellman, further strengthening the firm’s ability to deliver tailored, industry-leading sustainability compliance, consulting, and assurance solutions.

The strategic move strengthens Schellman’s growing sustainability practice, further solidifying the firm as a key player in environmental and sustainability compliance reporting. With the addition of Sustas’s expertise and Schellman’s newly obtained ISO 14001 accreditation, the acquisition is set to help clients demonstrate responsible business practices and navigate the evolving regulatory landscape, including the SEC’s climate disclosure rules, California’s Climate Accountability Package, and Europe’s Corporate Sustainability Reporting Directive (CSRD).

Located in Idaho and led by Founder and Managing Partner, Stuart Block, and Managing Partner, Ben Montalbano, Sustas built a strong reputation for providing transparent and accurate sustainability reports.

“Building Sustas has been an exciting and rewarding journey, made possible by our trusted clients and partners,” said Stu. “We are excited to join Schellman and leverage their experience in attestation and compliance services, as well as penchant for technological innovation, to grow a next-generation sustainability practice. This union of skills and experiences will enable Schellman to serve new and existing clients with an industry leading sustainability practice.”

“We are thrilled to welcome Sustas, LLC to the Schellman family,” said Avani Desai, CEO of Schellman. “This acquisition not only enhances our capabilities in sustainability reporting services, but it also strengthens the suite of solutions we offer our clients. Stu and Ben are industry leaders with a proven track record, and their expertise will be invaluable as our clients navigate the increasing importance of sustainability in today’s market. This partnership is a major step forward in delivering meaningful results and expanding our commitment to responsible business practices.”

Schellman’s recent ISO 14001 accreditation from ANSI National Accreditation Board (ANAB) further amplifies its Sustainability capabilities by empowering the firm to guide clients in implementing environmental management frameworks that support sustainable growth and regulatory compliance. The ISO 14001 standard offers a structured EMS framework, guiding organizations to enhance environmental performance, adhere to regulatory requirements, and improve operational efficiency fostering long-term resilience and minimizing environmental impact.