On April 17, 2025, the Supreme Court issued its opinion in Cunningham v. Cornell University, No. 23-1007, 604 U.S. ___ (2025), a case addressing the pleading standard for prohibited-transaction claims under § 406(a) of the Employee Retirement Income Security Act of 1974 (ERISA).  Section 406(a) proscribes certain transactions between plans and “parties in interest” absent a statutory exemption enumerated under ERISA § 408.  The core question on appeal was whether plaintiffs must allege, as an element of a prohibited-transaction claim under § 406(a), that an exemption under § 408 does not render the challenged transaction lawful.

In a decision that is expected to have wide-ranging implications, the Court held that exemptions under § 408 provide affirmative defenses to liability under § 406(a).  Consequently, plaintiffs need not allege that any of the exemptions set forth in § 408 are unavailable to state a plausible claim for relief.  Rather, the burden falls on plan fiduciary defendants to plead and prove that an exemption under § 408 nullifies a plaintiff’s claim.