Which Spotify co-founder also co-founded Tradedoubler?

Spotify co-founder Martin Lorentzon also co-founded Tradedoubler.

Lorentzon and Felix Hagnö founded the Swedish digital-marketing company Tradedoubler in 1999, initially under the name Netstrategy. The business became a major European affiliate-marketing company, connecting advertisers with publishers and helping establish Lorentzon as a successful technology entrepreneur.

In 2006, Tradedoubler acquired Advertigo, an advertising company created by Daniel Ek. Ek and Lorentzon subsequently worked together on the idea that became Spotify, which they founded in Stockholm that year. Lorentzon supplied important early funding and helped finance developers, offices, and music-licensing work while the service was being built.

A common mix-up is to identify Daniel Ek because he is Spotify’s most prominent public founder and later chief executive. Sean Parker joined Spotify as an early investor and board member, but he did not co-found Tradedoubler or Spotify. Gustav Söderström became a major Spotify executive much later. The shared Tradedoubler connection specifically points to Lorentzon.