Zendesk has entered into a definitive agreement to be acquired by an investor group, in an all-cash transaction for $10.2 billion.

Intuit is acquiring Mailchimp for approximately $12 billion.

Okta has entered into a definitive agreement to acquire Auth0, an identity platform for application teams, for $6.5 billion.

Twilio has entered into a definitive agreement to acquire Segment for $3.2 billion. The transaction is expected to close by the end of this year.

Cloud-based human capital management software provider Ultimate Software has entered into a definitive merger agreement to be acquired by Hellman & Friedman.