Dart Casting & General Die Casters form the GD Casting Group
- Brian Lennon
- Aug 28
- 2 min read
Updated: Sep 8

We’re excited to announce that Dart Casting in Alsip, IL and General Die Casters in Twinsburg, OH will begin operating as the GD Casting Group. (GDC)
“Since our merger in 2023, Dart and GDC have operated as two separate companies, but we’ve integrated core functions and shared best practices. We have grown into one family and the time feels right to begin operating under one umbrella. The change streamlines our new business development process by centralizing quoting through the GD Casting Group. We’ll decide which plant is the best fit for each request and provide the most competitive quote to the customer,”
Brian Lennon, GD Casting Group CEO.
Matt Proske has joined the GD Casting Group as Chief Operating Officer. “I have known Matt for nearly 25 years”, says Lennon “We first met at the NADCA Plant Managers Conference in Nashville in 2003. We connected over our passion for process engineering and our alma mater, Kent State University. Matt has an impressive resume and tremendous experience in both engineering and business. He shares our philosophy of pursuing engineering excellence with an engaged and hands on management style.”
Matt started his career at Magmasoft teaching users (including GDC) to optimize their simulations as well as their casting processes. He was promoted to Vice President of Sigma Engineering, Magmasoft’s newly formed plastic simulation branch. After years in Chicago, he moved home to Northeast Ohio to start a family and worked as Visi-Trak’s Executive Vice President. He led General Aluminum’s Engineering group as the Corporate Director for the last five years.
George Nijmeh, our Vice President of Operations at Dart Casting will take on a dual role in our organization. George is our new VP of Marketing for GD Casting Group. George has shown his talent and creativity in developing a strong social media presence for Dart Casting as well as performing website development, providing sales presentations and even developing the new GD Casting Group name and logo. George’s creativity combined with his casting experience and outgoing personality make him a perfect fit for this important role.
“I am fortunate to be leading such a talented team, and I am excited to see what we can accomplish together,”
Brian Lennon, GD Casting Group CEO.
Learn more at https://www.gdcasting.com/







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