A Delaware court recently ruled on a significant case involving Shareholder Representative Services, LLC (SRS) and Alexion Pharmaceuticals, Inc. The court's decision focuses on how to calculate interest related to damages in a breach of contract dispute. This ruling could impact future cases involving similar contractual issues.
The case, titled Shareholder Representative Services, LLC v. Alexion Pharmaceuticals, Inc. (C.A. No. 2020-1069-MTZ), arose from a complex merger agreement between the two parties. The court's decision, issued on August 3, 2026, clarifies important legal principles regarding the calculation of interest in contractual disputes.
SRS and Alexion entered into a merger agreement concerning the acquisition of Syntimmune, a company that produced drug substances and products. The agreement included various promises, including a milestone payment that Alexion was supposed to make to SRS upon the successful completion of a clinical trial. However, Alexion failed to make this payment, leading SRS to file a breach of contract claim against them.
In response, Alexion filed a counterclaim seeking indemnification for losses it claimed resulted from SRS’s breach of the merger agreement. This counterclaim complicated the situation because it involved unliquidated damages, meaning the exact amount was not determined until a later court ruling. The dispute over how to calculate interest on these claims ultimately reached the Delaware Court of Chancery.
The court ruled on the method for calculating interest related to the damages. The judge, Morgan T. Zurn, explained that the decision hinges on two potential rules: the "Interest on the Entire Claim Rule" and the "Interest on Balance Rule." The former calculates interest on the entire claim before offsetting any counterclaims, while the latter offsets the counterclaim first before calculating interest on the remaining balance.
In this case, SRS argued for the Interest on the Entire Claim Rule, while Alexion favored the Interest on Balance Rule. The court found that both parties' claims were closely related to the same transaction, which favored the application of the Interest on Balance Rule. Judge Zurn stated, "The economic realities of the case... do not support applying the Interest on the Balance Rule." This meant that SRS would receive prejudgment interest on its entire claim from the date the milestone payment was due.
The court also noted that SRS had not received any funds representing Alexion’s counterclaim, which further justified its decision. The judge emphasized that SRS had been deprived of its Milestone 1 payment since October 6, 2022, and was entitled to prejudgment interest. The court's ruling allows SRS to receive interest on the full amount owed until a specific date, after which Alexion can offset any indemnification amounts that exceed what remains in the escrow fund.
This ruling is significant for several reasons. First, it clarifies how courts may approach interest calculations in cases where both parties have claims against each other. The decision also highlights the importance of clear contractual language regarding indemnification and payment obligations. Future cases involving similar contractual disputes may reference this ruling as a precedent.
The outcome of this case will likely influence how companies draft their merger and acquisition agreements, particularly regarding payment milestones and indemnification clauses. Companies may seek to avoid ambiguity in their contracts to prevent disputes like this from arising.
Looking ahead, it remains to be seen whether Alexion will appeal the court's decision. The ruling establishes important legal principles, but it is not the end of the road for this case. If Alexion chooses to appeal, the matter could continue in the court system.
In conclusion, the Delaware Court of Chancery's ruling in Shareholder Representative Services, LLC v. Alexion Pharmaceuticals, Inc. provides clarity on how to calculate interest in breach of contract cases involving counterclaims. This decision is likely to have lasting implications for similar legal disputes in the future.