https://www.reuters.com/article/us-slack-fundraising/slack-valued-at-5-1-billion-after-new-funding-led-by-softbank-idUSKCN1BT0KO
Software startup Slack Technologies Inc said it raised $250 million from SoftBank Group Corp (9984.T) and other investors in its latest funding round, boosting the company's valuation to $5.1 billion.