No. At least according to Vice Chancellor Slights III in the case In re Xura, Inc. Stockholder Litigation, C.A. No. 12698-VCS (Del. Ch. Dec. 11, 2018). While it is true that in many circumstances appraisal is the exclusive remedy… not always!
Xura highlights that the facts of each case matter and that an investor needs to think about the full suite of their potential claims and options in any merger dispute.
For more on Xura, see this coverage.