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Essential Solutions with Extraordinary Results

SI Group is a global leader in the innovative technology of performance additives, process solutions, active pharmaceuticals ingredients, and chemical intermediates. Our solutions are essential to many diverse industries and applications, creating extraordinary results. We drive value by enhancing the quality, performance, and durability of countless items we use every day.

We are on a journey to captivate our customers at every level. Whether that means expanding our capabilities, global reach, or providing new innovations and technologies that create value. Our approach is customized to exceed customer needs and deliver superior performance.

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Secure access to SI Group financial statements and reports

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Access to the investor site is limited to qualified institutional buyers

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Recent News

Nov 09, 2026

Expanding Possibilities: Launch of POLYBOND™ 8001 Delivers More Opportunities and Value for Our Customers

A new addition to the POLYBOND™ portfolio is helping SI Group reach new applications, address evolving customer needs, and create opportunities for growth.
Oct 19, 2026

SI Group Announces CEO Leadership Transition

Marcello Boldrini Named Chief Executive Officer; David Bradley Departs Following Successful Tenure
Oct 15, 2026

SI Group Celebrates 75 Years of Manufacturing History at Rotterdam Junction Site

Employees and their families gathered on site to celebrate the occasion and give back to their community