She then went into private practice at Wilmington law firm Young Conaway Stargatt & Taylor, where she became a partner.

[4][5] In September 2018, Governor John Carney nominated McCormick and Morgan Zurn to two new vice-chancellor positions on the Delaware Court of Chancery.

[12] McCormick rejected Kohlberg's arguments that the COVID-19 pandemic resulted in a material adverse change or a breach of the ordinary course of business covenant in the merger agreement by the plaintiffs, then held that Kohlberg had breached its contractual obligation to use its "reasonable best efforts" to obtain financing for the transaction.

[15] Over Musk's objections, McCormick granted Twitter's motion for expedited treatment of the lawsuit and set a trial date for October 2022.

[16] Twitter asked the court to enter an order of specific performance, effectively forcing Musk to close the deal.

[23] Despite shareholder approval, McCormick ruled that the size of the pay package was extraordinary and raised concerns about its fairness.

[25] However, McCormick reaffirmed her decision in December 2024, citing ongoing concerns about transparency and fairness in the deal.