After closing in April, Dale’s Diner of Waterville has reopened June 22 under new ownership.

The diner is now owned by local investors and Waterville natives Nick Martin and DJ Martin, of Martin Signature Properties, a local real estate brokerage.

“We are thrilled to help the community keep local dining alive, and we know how much people love Dale’s Diner,” said Nick Martin.

The Martins plan to keep …