Veteran Paccar executive to retire in January

Tech chief John Rich and Kenworth leader Laura Bloch will pick up parts of the work Peterbilt boss Darren Siver has been overseeing.

Geert De Lombaerde

Sept. 9, 2025

2 min read

Key takeaways

Darrin Siver, a key Paccar executive for 32 years, plans to retire early next year.
John Rich, CTO with extensive experience at Ford, will oversee Peterbilt and maintain his current role as CTO.
Laura Bloch, SVP overseeing Kenworth and Paccar Parts, will also take on quality and purchasing responsibilities to support ongoing operations.

68bf09f007e253828419d4ee Pcar Peterbilt 589

One of the most senior executives at Paccar plans to retire early next year, at which point his responsibilities will be divided among two of the company’s senior vice presidents.

Darrin Siver has been with Paccar, the parent of the Kenworth and Peterbilt brands, for about 32 years and has been one of its three executive vice presidents since the beginning of 2023. The executive, who was 58 years old at the time of Paccar’s most recently filed proxy statement earlier this year, has been overseeing Peterbilt and Paccar’s corporate quality and purchasing groups.

Two executives are preparing to take over those duties, effective January 5:

CTO John Rich will stay in that role but also add to his job description the corporate oversight of Peterbilt. Rich joined Paccar in March 2021 from Ford, where he had spent more than three decades and had most recently helped oversee global strategy and the company’s work on autonomous vehicle technology.
Laura Bloch, who oversees Kenworth and Paccar Parts, will also take on responsibility for quality and purchasing. Bloch was a leadership development intern at Paccar in the summer of 2003 and has since risen through various distribution, sales, and operations roles. She was elevated to general manager of Paccar Parts in March 2022 and was named a senior vice president at the beginning of this year.

Peterbilt Motors makes executive leadership changes in January 2025.

Peterbilt taps Montero to take over as GM

Jan. 28, 2025

The Sainte-Thérèse plant opened its doors in 1999.

Paccar cutting jobs in Quebec

July 9, 2025

Before being promoted to executive vice president, Siver was a senior vice president for six years and the general manager of Peterbilt from mid-2013 to the end of 2016. Prior to that, he was general manager of Paccar Parts.

Word of Siver’s planned retirement comes nearly eight months after Paccar executives said Jake Montero was taking over as general manager of Peterbilt from Jason Skoog, who had also spent more than three decades with the company. Montero has been with Paccar for about two decades and previously was Peterbilt’s assistant general manager of sales and marketing.

Paccar executives in mid-July reported second-quarter deliveries of 39,300 trucks for the second quarter and said they expected that number to slide to below 33,000 this quarter. The company now expects the Class 8 market in the United States and Canada to be between 230,000 and 260,000 units, which is 7.5% below their estimate from early this year.

About the Author

Geert De Lombaerde

Senior Editor

A native of Belgium, Geert De Lombaerde has more than two decades of experience in business journalism. Since 2021, he has written about markets and economic trends for Endeavor Business Media publications FleetOwner, Healthcare Innovation, IndustryWeek, Oil & Gas Journal, and T&D World.

With a degree in journalism from the University of Missouri, he began his reporting career at the Business Courier in Cincinnati. He later was managing editor and editor of the Nashville Business Journal. Most recently, he oversaw the online and print products of the Nashville Post and reported primarily on Middle Tennessee’s finance sector and many of its publicly traded companies.