Used Daily By 750K Workers, Slack Raises $160M, Valuing Collaboration Startup At $2.8B

 Slack, the popular workplace communication and collaboration startup from Flickr co-founder Stewart Butterfield — is today confirming that it has raised its latest round of funding: a Series E of $160 million at a post-money valuation of $2.8 billion. This follows on from reports from us and others that it was raising funding at upwards of a $2 billion valuation — a massive premium… Read More