Question: Which company owns this subsidiary for which Gulfstream G280 was built?

Context paragraphs:
Istad: Istad AS is a power company based in the town of Molde in Møre og Romsdal county, Norway.  The company owns the power grid in the municipalities of Aukra, Eide, Fræna, Gjemnes, Midsund, and Molde.  It also operates a fiberoptic broadband in Molde.  The company owns a 25% stake in the power plants on the river Driva.

Honeywell HTF7000: The Honeywell HTF7000 is a turbofan engine produced by Honeywell Aerospace.  Rated in the 6540 - range, the HTF7000 is used on the Bombardier Challenger 300/350, Gulfstream G280 and Embraer Legacy 500/450 and is planned for the new Cessna Citation Longitude.

Gulfstream Aerospace: Gulfstream Aerospace Corporation is an American wholly owned subsidiary of General Dynamics.

DC Thomson: DC Thomson is a British publishing and television production company best known for producing "The Dundee Courier", "The Evening Telegraph", "The Sunday Post", "Oor Wullie", "The Broons", "The Beano", "The Dandy", and "Commando" comics.  It also owns Parragon and the Aberdeen Journals Group which publishes the "Press and Journal".  It was a significant shareholder in the former ITV company Southern Television.  Through its subsidiary DC Thomson Family History the company owns several websites including Friends Reunited and Findmypast.  Based in Dundee, Scotland, the company also owns children books publisher Parragon.

Gulfstream G280: The Gulfstream G280 is a twin-engine business jet built under license by IAI in Israel for Gulfstream Aerospace.  It began delivery to users in 2012.

LKAB Malmtrafik: LKAB Malmtrafik, earlier Malmtrafik i Kiruna AB ("MTAB"), is a Swedish railway company which operates the iron ore freight trains on the Iron Ore Line and the Ofoten Line.  MTAB is a wholly owned subsidiary of the mining company Luossavaara–Kiirunavaara (LKAB).  In Norway, operations are handled by the subsidiary Malmtrafikk AS (MTAS).  Malmtrafik hauls ore from LKAB's mines in Kiruna, Malmberget and Svappavaara to the ports of Luleå and Narvik, the latter located in Norway.  The company owns 28 Iore locomotives and 750 hopper cars. Each train is 68 cars long and weighs 8600 t , allowing the company to transport 33 million tonnes per year.

Thompson Creek Metals: Thompson Creek Metals Company Inc. is a full cycle mining company with acquisition, exploration, development, and operation in North America. </small> The corporate office is located in Denver, Colorado.  The company primarily produces copper, gold, and molybdenum. </small> In the past several years, the Company has evolved from being a major primary molybdenum producer to becoming a copper and gold mining company with the construction and development of the Mount Milligan (open-pit copper-gold) mine and concentrator in British Columbia, Canada.  Mount Milligan is Thompson Creek Metals principal operation and the company owns 100% of this property. </small> The company also owns 100% of its Thompson Creek Mine (open-pit molybdenum and concentrator) in Idaho.  Thompson Creek Metals owns 75% joint venture interest in two other properties, including its Endako Mine (open-pit molybdenum, concentrator and roaster) in British Columbia, and its Langeloth Metallurgical Facility (roaster) in Pennsylvania. </small> Thompson Creek Metals has additional development projects, including the Berg property in British Columbia (exploration of copper, molybdenum, and silver). </small> </small>

Jack Entertainment: Jack Entertainment LLC (stylized JACK Entertainment and formerly Rock Gaming LLC from 2009 to 2016) is a gaming, hospitality, and entertainment corporation based in Detroit, Michigan.  The company owns and operates casinos and hotels in Michigan and Ohio, and owns a stake of properties in Kentucky and Maryland.  Jack Entertainment operates as a subsidiary of Rock Ventures LLC.

Gulfstream IV: The Gulfstream IV (or G-IV or GIV) and derivatives are a family of twinjet aircraft, mainly for private or business use.  They were designed and built by Gulfstream Aerospace, a General Dynamics company based in Savannah, Georgia, United States, from 1985 until 2003.  Their power is provided by two Rolls-Royce RB.183 Tay turbofans.

Lonestar Cell: Lonestar Cell is a telecommunications company based in Monrovia, Liberia.  The company owns and operates the largest wireless telecommunications network in Liberia, with 48% of the market share in 2011.  Founded in 2000 by Beirut-based Investcom, the company became a subsidiary of the South African conglomerate MTN Group following MTN's acquisition of Investcom in 2006.  Liberian businessman Benoni Urey is the Chair of Lonestar Communication Corporation and owns a significant portion of the company through his PLC Investments Grouup.

Supporting paragraphs: Gulfstream G280 Gulfstream Aerospace
Answer: General Dynamics