Yep, no longer showing up for me, either.
Ownership is public record:
FAA Aircraft Registration (N145GM)
Aircraft Summary
Summary Owner Airworthiness Serial Number
2008 LEARJET INC 45
Fixed wing multi engine
(12 seats / 2 engines) TIARA AIR LLC
COLUMBUS, OH
(Corporation) Standard/Transport 376
Aircraft Details
Engine Weight Speed Mode S Code
ALLIEDSIGN TFE731-20BR
Thrust: 3650lbs (Turbo-fan) Over 20,000lbs Not defined 50132745
Registration Details
Status Certificate Issue Date Airworthiness Date Last Action Date Expiration
Assigned 2008-10-03 2008-09-22 2008-12-29 2012-12-31