After making Stein Promotions the market leader in the area of Sales Promotions and Events during the 80s, Dieter Stempel continued his successful strategy and soon made TMS the market leader among specialist trade marketing agencies offering services around the POS.
- 1994: Formation of TMS Trademarketing Service GmbH
- 1990: 1990: Sale of Stein Promotions to the BBDO Group
- 1984: Founding member of Stein Promotions Düsseldorf GmbH and 1988 Stein Promotions Hamburg GmbH
- 1983: Appointment as Managing Partner
- 1977: Project Manager at Stein Promotions GmbH, Frankfurt