Mark Oberholtzer

Oberholtzer Dairy Cattle & Auction Co

At Oberholtzer Auctions we strive to fairly represent both buyers and sellers in everything we do! We specialize in selling livestock, as well as machinery, and estates, both at our location or on- site. Each and every situation is unique, call us to see what we can do for you!! (715) 773- 2240

Mark is a first generation auctioneer from central WI.  He has attended auctions with his father from a very young age and became interested in someday becoming an auctioneer. Finally at the age of 21 he attended and graduated Worldwide College of Auctioneering and started selling livestock at the local sale barn.

In the course of the next few years he was hired to help with other sales across the state selling anything from flowers to farm machinery. Three years after graduating from auction school he went back again for the advanced bid calling seminar.   He now lives on a farm near Loyal WI where he along with his father and brother own and operate Oberholtzer Dairy Cattle and Auctions. He is a husband and a father to two daughters.

At Oberholtzer Dairy Cattle & Auction Co, we are dairy farmers willing to put the family name on our product. Truly family owned and operated, we also have the huge advantage of all our staff being current or former dairy farmers.

We sell all classes of cattle, hay & machinery in our regular weekly auctions but specialize in dairy cattle. We also have special one owner retirement auctions either at our yards or on your farm (also selling private treaty).

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The Wisconsin Auctioneers Association actively advocates for the auction industry through grassroots lobbying and a WAA legislative fund. Member engagement and donations are key to the success of WAA advocacy efforts.

WAA President

Riley Kahl

Our Mission is to educate, promote and protect the auction industry of Wisconsin:

to encourage Auctioneers; to enhance skills, knowledge and professionalism;

to promote the auction method of marketing for sale of real and personal properties.

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Online booking code is: WAA2024
Guests can book by going online to:
Or calling (608) 747-2200

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It is the duty of every member to protect the public against fraud, misrepresentation or unethical practices in connection with the sale, disposition or liquidation of any real or personal property the auctioneer is called upon to dispose of at public auction.


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Mr. Harb aka… the Auctioneer Insurance Guy, is the founder and CEO of,...

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Contact Us

2080 W 9th Avenue, #310
Oshkosh, WI 54904
(608) 228-4880