RadiumOne Absorbs $21M

Crosslink Capital is the lead investor in a $21 million Series B financing round for RadiumOne, the San Francisco startup announced today. The company uses information about consumers’ social connections online (but outside of Facebook) to aim online advertisements at the users most likely to engage. Also participating in the round was DFJ Esprit, a first-time investor, and existing backers Adams Street Partners and Trinity Ventures. RadiumOne has raised some $33.5 million overall. The company said it would put the new capital toward acquisitions and expansion in Europe and the Asia-Pacific region.

Wade Roush is a freelance science and technology journalist and the producer and host of the podcast Soonish. Follow @soonishpodcast

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