yoc ag is acquiring helsinkibased advertising agency nostemedia oy making a foray into the nordic market the berlinbased adtech company said tuesday that it had signed a share purchase agreement that includes a fixed payment of 123 million euros 13 million and variable performancerelated components that hinge on nostemedias operating results nostemedia oy is changing its market positioning and now acts as a provider of highquality advertising technology with a greatly expanded product range yoc ag chief executive dirk kraus said yoc ag expects the deal will bring in an annual contribution of eur500000 to eur700000 to earnings before interest taxes depreciation and amortization in the medium term