On May 16, 2019, the Supreme Court of Delaware affirmed a judgment by Vice Chancellor J. Travis Laster of the Delaware Court of Chancery in favor of Potomac Capital Partners II, LP on claims by shareholder plaintiffs that the activist investor aided and abetted breaches of fiduciary duty by the board of PLX Technology Inc. in connection with its acquisition by Avago Technologies Wireless (U.S.A.) Manufacturing Inc.  In re PLX Technology Inc. S’holders Litig., C.A. No. 571, 2018 (Del. May 16, 2019).  As discussed in our post regarding that decision, the Court of Chancery found in a post-trial opinion that defendant had aided and abetted breaches of fiduciary duty but also concluded that plaintiffs failed to prove damages because the deal price likely exceeded the standalone value and no higher bidders had emerged.  On appeal, plaintiffs contended that the Court of Chancery erred in deciding the damages issue by importing principles from appraisal jurisprudence to give deference to the deal price.  In a summary order, the Delaware Supreme Court affirmed the Court of Chancery’s “decision that the plaintiff-appellants did not prove that they suffered damages.”  The Court expressly declined to reach defendant’s arguments on cross-appeal that it had not aided and abetted any breaches of fiduciary duty because its affirmance on the damages issue “suffices to affirm the judgment.”