Nov 24, 1992 - Overgas Inc. is established as a joint stock company.
Apr 25, 2001 - The company establishes a local subsidiary Sofiagas EAD, which supplies natural gas in the Bulgarian capital Sofia.
Feb 26, 2003 - Overgas Inc. AD issues corporate bonds with a nominal value of BGN 20 mln, maturing on February 26, 2008 (Stock Symbol: BOVERG).
Sept 14, 2005 - The company granted a 35-year gas distribution licence for the Dunav region by the State Energy and Water Regulatory Commission.
Dec 11, 2008 - Overgas Inc. AD takes over a local subsidiary Gazosnabdiavane Chirpan OOD, which ceases to exist as a separate legal entity.
February 2009 - The company's subsidiaries Hebrosgas AD and Gazosnabdiavane Parvomay AD merge with Gazosnabdiavane Asenovgrad AD. Gazosnabdiavane Asenovgrad AD renames into Overgas Yug AD.
March 2009 - The company's subsidiary Velbazhdgas AD renames into Overgas Zapad AD.
April 2009 - Overgas Inc. AD's subsidiary Burgasgas AD renames into Overgas Iztok AD.
June 15, 2009 - The company's subsidiary Karnobatgas 97 AD is liquidated.
July 14, 2009 - Overgas Inc. AD's subsidiary Dunavgas EAD renames into Overgas Sever EAD.
Sep 21, 2009 - The company's subsidiaries Kozhuhgas AD, Montanagas AD, and Gazosnabdiavane Vratsa EAD merge into Overgas Zapad AD.
December 2009 - Overgas Inc. AD's subsidiaries Gazosnabdiavane Sliven AD and Nesi 07 AD decide to liquidate themselves.
Feb 5, 2010 - The company's subsidiaries Varnagas AD and Gazosnabdiavane Novi Pazar AD merge into Overgas Iztok AD.
Apr 24, 2015 - Overgas Inc. АD merges its subsidiaries Overgas Zapad AD, Overgas Yug AD, Overgas Iztok AD and Overgas Sever EAD into Sofiagas EAD and renames Sofiagas EAD to Overgas Mrezhi AD.
Last updated on Nov 20, 2020.