Salesforce Is Said to Explore Acquisition of Slack (1)

Salesforce.com Inc. is considering acquiring workplace chat tool Slack Technologies Inc., according to a person familiar with the matter.

Slack shares surged as much as 34% while the news weighed on Salesforce, which fell as much as 5%.

The companies have been holding talks and could announce a deal as soon as next week, the person said. A deal hasn’t been finalized and could still fall apart, the person said, asking not to be named because the matter is private.

Representatives for Salesforce and Slack couldn’t immediately be reached for comment.

The Wall Street Journal first reported on the ...