Allison Transmission Holdings Inc - Company Profile
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The following section provides information on Allison Transmission Holdings Inc’s senior management, executives, CEO and key decision makers and their roles in the organization. For more insight into Allison Transmission Holdings Inc's management and employees, unlock the full data with our company analytics monitoring tool.
Executives
David S. Graziosi
Chairman; President; Chief Executive Officer Executive BoardMr. David S. Graziosi has been the Chairman, President and Chief Executive Officer of the company since 2021.Previously, he served as the Chief Financial Officer, President and Assistant Secretary of the company from 2016 to 2018. Prior to this, he served as Executive Vice President, Chief Financial Officer, Treasurer and Assistant Secretary of the company since 2007. Pior to this, he served as the Executive Vice President and the Chief Financial Officer at Covalence Specialty Materials from 2006 and 2007. Prior to this, he held various positions, including as the Vice President of Finance Precursors and Epoxy Resins at Hexion Specialty Chemicals, Executive Vice President and Chief Financial Officer at Resolution Performance Products LLC. Earlier, Mr. Graziosi served as the Vice President and the Chief Financial Officer of General Chemical Industrial Products Inc, Assistant Corporate Controller at Sun Chemical Group BV and as a Finance Director of GenTek Inc.
Scott Mell
Chief Financial Officer; Treasurer Senior ManagementMr. Scott Mell has been the Chief Financial Officer and Treasurer of the company since 2025. Prior to this, he served as the Chief Financial Officer at TriMas Corporation from 2021 to 2025. Earlier, Mr. Mell served various roles at Riveron Consulting LLC, Ernst & Young LLP, McKinsey & Company and AlixPartners, LLP.
JK Pareek
Vice President - IS&S; Chief Information Officer Senior ManagementMr. JK Pareek has been the Chief Information Officer and Vice President of Information Systems and Services of the company since 2021. Prior to this, he served as the Vice President of Global IT and the Chief Information Officer at Nidec Motor Corporation. Prior to this, he served as the Chief Information Officer of the Solar Energy business unit at SunEdison. Earlier, Mr. Pareek served various IT roles at MEMC and Texas Instruments.
Lorraine Parker Clegg
Vice President - Human Resources; Chief People Officer Senior ManagementMs. Lorraine Parker Clegg the Chief People Officer, and the Vice president of Human Resources at the company since 2020. Prior to this, she served as the Chief Human Resources Officer of Doncasters Group Ltd. Previously, she held various leadership positions at Medtronic and Covidien.
Teresa J. van Niekerk
Chief Procurement Officer; Vice President Senior ManagementMs. Teresa J. van Niekerk has been the Chief Procurement Offier and Vice President of the company since 2016. Previously, she served as Executive Director of Purchasing of the company from 2014 to 2016. Prior to this, she served as Managing Director of Purchasing of the company from 2012 to 2014. Earlier, Ms. Niekerk served various Operational leadership roles at Navistar Truck Division’s purchasing group.
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