Does my insurance end the last day of the month or does it end immediately? When does COBRA start?

For US-based employees, your current benefits elections will continue as-is through the last day of the month of your separation date. You are eligible for COBRA coverage starting the 1st of the month following your separation. You will receive an exit letter detailing how to sign up for COBRA benefits within 5 business days of your last day with Samsara.