Jon Shirley Private jet tracker

Jon Shirley came to Microsoft in 1983 after 25 years at Tandy, and was the adult in the room for the next seven: president, COO and director of a company that had 350 employees and $50M in revenue when he arrived and cleared $1B before he stepped back in 1990. The 1986 IPO and the Redmond campus were both built on his watch, and he stayed on the board until 2008. Born 1938; lives in Medina, across Lake Washington from the company he ran.

With his late wife Mary he assembled one of the most significant private collections of Alexander Calder anywhere, along with broader modern and contemporary holdings; the Calder collection has since gone to the Seattle Art Museum. He remarried in 2016, to Kim Richter Shirley, and the two are fixtures on the ARTnews Top 200 collectors list.

N74JK is a 2011 Dassault Falcon 7X, c/n 136, hex A9F103 — derived from the N-number, since the FAA assigns the Mode S code as a pure function of the registration. Executive Jet Management manages the airframe, so the operator on a flight plan is not the owner. Spotters have it at Boeing Field across several years, in the hangar row this cluster shares.

The owner attribution is reported rather than registry-confirmed: the FAA record was not reachable when this entry was written, and the tail reads as initials in the same way the Gates 'WM' tails did. That is a weaker footing than the rest of the Boeing Field batch and is flagged here rather than smoothed over.