| 1930||Egidius Vandervelden||First brewery with sweetened, pasteurized Kriek in bottles with crown cap
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| 1934||Egidius Vandervelden||The farm and the cart shed wagonhouse were converted to a pub which was run by one of the daughters until 1988
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| 1941-1945||Egidius Vandervelden||Further development of brewing equipment with second-hand material
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| 1941-1945||Egidius Vandervelden||Since the use of wheat was prohibited during the war, lambic was brewed on the basis of sugar beets and a small part of wheat
| 1953||Henri Vandervelden II||Takes over his father’s brewery operations
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| 1954||Henri Vandervelden II||Boost of Increases the brewing capacity to 50hl per brew
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| 1954||Henri Vandervelden II||The brewery uses the name Oud Beersel as a reaction against the new city of Brussels.
| 1959||Henri Vandervelden II||Purchase of an Opel Blitz truck
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| 1973||Henri Vandervelden II||Equips Oud Beersel as becomes the first living brewery museum of Belgium
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| 1981||Henri Vandervelden II||Test Aankoop (consumer organization): Highest rating / No saccharin in the beer
| 1986||Henri Vandervelden II||Foundation of the fraternity Tastegeuze Broederschap
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| 1988||Henri Vandervelden II||Due to the high-priced bottling equipment, the bottling is outsourced to the Brewery [[Brouwerij_Boon|Brouwerij Boon]]
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| 1988||Danny Draps||Takes over the pub “Het bierhuis” from his mother, situated next to the brewery
| 07/30/2007||Gert Christiaens||Oude Geuze Oud Beersel is voted the World’s Best Gueuze beer by the magazine “Beers of the World”
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| 04/01/2007||Jos Christiaens||Jos Christiaens , Gert's father joins as unpaid general manager
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| 10/14/2007||Gert en and Jos Christiaens||Oud Beersel celebrates its 125th anniversary
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| 11/22/2007||Gert en and Jos Christiaens||Installation of four mixing tanks for the assemblage of lambic
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| 03/21/2008||Gert en and Jos Christiaens||Oude Kriek Oud Beersel wins the Gold Medal on Ratebeer
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| 04/19/2008||Gert en and Jos Christiaens||Oude Geuze Oud Beersel wins Silver at the World Beer Cup 2008
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| 10/30/2008||Gert en and Jos Christiaens||Investment in a modern barrel cleaning equipment
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| 05/14/2009||Gert en and Jos Christiaens||Oud Beersel is honoured as laureate of “Ambacht in de Kijker” (craft in the spotlight) by Sabine Laruelle, Minister for SME’s and Independents
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| 06/03/2009||Gert en and Jos Christiaens||Oud Beersel wins the ‘Ultimate KMO Makeover’ (marketing initiative of Microsoft for SME’s) and strongly invests in renewal
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| 07/09/2009||Gert en and Jos Christiaens||Launch of the Bersalis Kadet beer
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| 03/31/2010||Gert en and Jos Christiaens||Oud Beersel increases its capacity by purchasing five wooden barrels of approximately 45 HL per barrel
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| 06/01/2010||Gert en and Jos Christiaens||First employee joins Oud Beersel as sales representative
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