Brewery Ommegang has some vegan options

Company email (September 2017)
"Pale Sour is suitable for vegans."

Company email (October 2016):
"All of our Products are currently vegan-friendly. We may make a honey beer in the future. A small amount of our beer is made in Belgium but I don’t believe they use any animal products."

Company email (November 2015):
"[Joemmegang] contains a small amount of milk sugar. Milk sugar is not fermentable by ale yeast and adds a touch of sweetness and body.” [Note: Joemmegang was a limited edition release]

Company email (2009):

Thank you for your interest in Ommegang! I am happy to inform you that we do not use any animal products in the brewing or refining process. All of our products are vegan. Feel free to contact me with any other questions.