CHICAGO – May 17, 2026 – Sikich, a professional services company specializing in consulting, technology and compliance announced it is finalizing its integration of Tantus Technologies, a Virginia-based company providing innovative technologies to federal government agencies. The company focuses on cybersecurity, next-generation automation, strategic planning, digital modernization and operations, further strengthening Sikich’s leadership in the federal government space and adding significant scale to its greater D.C. footprint.
With proven capabilities across AI, intelligent automation, zero trust security and quantum-resistant encryption, Tantus strengthens Sikich’s ability to deliver secure, future-ready modernization for federal agencies.
“Buck Keswani built an incredible organization, and his vision and entrepreneurial drive are deeply embedded in the team’s identity,” said Sikich Chairman & Chief Executive Officer Christopher Geier. “That legacy, in part, makes them an ideal cultural fit for our organization, in addition to the specialized, efficient and citizen-centric technology solutions and commitment to mission performance they bring to the federal government. They are a highly credible and trusted partner to federal agencies. Together as one unified organization, we will strengthen our influence in this critical sector and deliver measurable impact for the federal government.”
About Sikich
Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology and compliance. Highly specialized and hands-on teams deliver integrated solutions rooted in deep industry experience. Our approach is strategically and thoughtfully designed to help our clients, teams and communities accelerate success.
Sikich has approximately 2,500 team members and operates across North America, EMEA and APAC.
Sikich practices in an alternative practice structure in accordance with the AICPA Professional Code of Conduct and applicable law, regulations, and professional standards. Sikich CPA LLC is a licensed CPA firm that provides audit and attest services to its clients, and Sikich LLC and its subsidiaries provide tax and business advisory services to its clients. Sikich CPA LLC has a contractual arrangement with Sikich LLC under which Sikich LLC supports Sikich CPA LLC’s performance of its professional services. Sikich LLC and its subsidiaries are not licensed CPA firms.
“Sikich” is the brand name under which Sikich CPA LLC and Sikich LLC provide professional services. The entities under the Sikich brand are independently owned and are not liable for the services provided by any other entity providing services under the Sikich brand. The use of the terms “our company”, “we” and “us” and other similar terms denote the alternative practice structure of Sikich CPA LLC and Sikich LLC.
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