DONALDSON COMPANY EMPLOYEES, INCLUDING PRESIDENT & CEO BILL COOK, ATTEND ROLLOUT CEREMONY FOR CH-53K KING STALLION HELICOPTER

MINNEAPOLIS, Minn., May 14, 2014 –With their air filtration system pictured above them, Donaldson Company, Inc. (NYSE: DCI) employees are photographed with the new CH-53K heavy-lift test helicopter EDM-2 during a Sikorsky Aircraft roll out ceremony May 5 in West Palm Beach, Fla.

Representing the Donaldson Team from left are Bill Cook, President & CEO, Rob Barr, Contracts Manager, Mark Rigby, General Manager, Global Aerospace & Defense, Joe Wilson, Engineering Manager, and Tim Winters, Project Manager. Cook said he is very proud and honored that Donaldson filters were selected to protect the helicopter’s three GE turbine engines as the CH-53K will be carrying our Marines and their equipment where they need to be for decades to come. Cook added that this is a great example of our technology solving a Customer’s critical filtration needs and specifically in this case protecting and serving our Marines.

About Donaldson's Aerospace & Defense Group

Donaldson Aerospace & Defense is a leading worldwide provider of filtration systems for the aerospace and defense industry. Our filtration solutions protect fixed wing aircraft, rotorcraft, military ground vehicles, electronic equipment, space vehicles, missiles, military shipboard systems, and amphibious vehicles. We are committed to advancing filtration technology, providing quality products and prompt customer service. Our group serves customers from sales, engineering, and manufacturing locations around the world.

About Donaldson Company

Donaldson is a leading worldwide provider of filtration systems that improve people’s lives, enhance our Customers’ equipment performance, and protect our environment. We are a technology-driven company committed to satisfying our customers’ needs for filtration solutions through innovative research and development, application expertise, and global presence. Our over 12,400 employees contribute to the company’s success by supporting our customers at our more than 140 sales, manufacturing, and distribution locations around the world.