Gulfstream Contacts

Ready To Respond

Gulfstream Aerospace makes the world’s most advanced business aircraft. The company’s reputation for excellence stems as much from customer service—before, during and after the sale—as from the quality of Gulfstream aircraft.

Technical Sales


Jeff Gayon ⁄ ⁄  Director, Technical Sales and Development

Office: +1 912 395 9575
Mobile: +1 912 677 9180

John Cooreman ⁄ ⁄  Regional Sales Manager, Technical Sales

Territories: Western United States
Office: +1 303 452 4069
Mobile: +1 303 886 2507

Mark Grunewald ⁄ ⁄  Regional Sales Manager, Technical Sales

Territories: Eastern United States, Europe
Office: +1 920 426 2872
Mobile: +1 920 810 1413

Sumi Fonseka ⁄ ⁄  Regional Sales Manager, Technical Sales

Territories: Africa, Europe, Middle East
Office: +44 1582 506666
Mobile: +44 7798 843661

David Loso ⁄ ⁄  Regional Sales Manager, Technical Sales

Territories: Central America, Central United States, Mexico, South America
Office: 636-220-7644
Mobile: 314-591-2742

Explore key departments

Gulfstream Career Opportunities


A fulfilling career and a great place to work challenge the mind, drive creativity and innovation, and inspire teamwork and mutual respect.



Gulfstream is respected internationally for engineering and designing technologically advanced aircraft and systems that consistently redefine business aviation. Expect that standard to continue.

Product Support

Customer Support

At Gulfstream, the only true complement to innovative aeronautics is impeccable product support.

Company History

Company History

All business aviation, regardless of manufacturer, traces its roots to Gulfstream. Roy Grumman, co-founder of Grumman Aircraft Engineering Corporation, proposed the development of a purpose-built business aircraft at World War II’s end.