[1] In 1996, Oliver Sinner and Matthias Schrader [Wikidata] founded an online agency in Hamburg.

Headquarters were established in the former Johannes Krause tanning machinery factory in the Ottensen district.

In November of that year, the company went public on the Frankfurt Stock Exchange, and raised around €28 million as a result.

After the dot-com bubble burst, sales and profits plummeted, which meant that SinnerSchrader had to reduce working hours.

At the 2022 general assembly, it was decided to merge the company with the Accenture Digital Holdings corporation, headquartered in Kronberg im Taunus.

[19] In 2005, SinnerSchrader was featured on the list of "biggest capital destroyers" on the German stock market.

[20] The company rejected this criticism,[21] whereupon the Deutsche Schutzvereinigung für Wertpapierbesitz [de] admitted mistakes and revised its assessment of the SinnerSchrader share price.