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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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Recent News

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
Sep 30, 2026

SI Group Announces Price Increase in Response to Global Market Conditions

Company is responding to continued geopolitical conflicts in the Middle East Media Contact: Joseph Grande ph: + 1.413.684.2463 joe@jgrandecommunications.com THE WOODLANDS, Texas — Sept. 30, 2026 — SI...
Jul 13, 2026

SI Group Promotes Robert Kaiser to Senior Vice President of Strategic Marketing 

Kaiser joins Executive Leadership Team to advance the company’s commercial growth strategy