Middleton v. Amentum Parent Holdings LLC

CourtDistrict Court, D. Kansas
DecidedAugust 5, 2025
Docket2:23-cv-02456
StatusUnknown

This text of Middleton v. Amentum Parent Holdings LLC (Middleton v. Amentum Parent Holdings LLC) is published on Counsel Stack Legal Research, covering District Court, D. Kansas primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Middleton v. Amentum Parent Holdings LLC, (D. Kan. 2025).

Opinion

IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF KANSAS JAY MIDDLETON and GEORGE LAWRENCE, individually and on behalf of the AMENTUM 401(K) RETIREMENT PLAN and DYNCORP INTERNATIONAL SAVINGS PLAN, and all others similarly situated, Plaintiff, Case No. 23-CV-2456-EFM-BGS v. AMENTUM PARENT HOLDINGS, LLC, DYNCORP INTERNATIONAL, LLC, et al., Defendants.

MEMORANDUM AND ORDER Plaintiffs Jay Middleton and George A. Lawrence, on behalf of the Amentum 401(k) Retirement Plan (the “Amentum Plan”) and the DynCorp International Savings Plan (the “DI Plan”) (collectively the “Plans”), themselves, and all others similarly situated, bring this class action under the Employee Retirement Income Security Act of 1974 (“ERISA”). On December 31, 2021, the DI Plan merged into the Amentum Plan. Plaintiffs assert 10 claims against numerous Defendants (the fiduciaries of the Plans), including (1) breach of the fiduciary duty of prudence (Counts I, II); (2) breach of the fiduciary duty of loyalty (Count V, VI); (3) violation of prohibited transactions under 29 U.S.C. § 1106(a)(1) (Counts VII, VIII); (4) violation of ERISA’s anti- inurement provision (Counts IX, X); and (5) failure to adequately monitor other fiduciaries (Counts III, IV). This matter comes before the Court on Defendants’ Motion to Dismiss (Doc. 71). For the reasons stated below, the Court grants in part and denies in part Defendants’ motion. I. Factual and Procedural Background1 This case arises out of Defendants’ administration of two defined-contribution retirement plans. Defendant DynCorp International, LLC (“DI”) was a provider of sophisticated aviation,

logistics, training, intelligence and operational solutions in over 30 countries worldwide. Defendant Amentum Parent Holdings, LLC (“Amentum”) is a “premier leader in global engineering, project management, and solutions integration” and employs 44,000 employees in 85 countries. In November 2020, Amentum acquired DI. The DI Plan and the Amentum Plan existed separately and were administered by separate fiduciaries until the merger of the two plans became effective December 31, 2021. The Court will refer to the Amentum Plan pre-merger as the Legacy Amentum Plan, and it will refer to the merged DI and Legacy Amentum Plans as the Post-Merger Amentum Plan. Plaintiff Middleton worked for DI from 2003 to 2005 and participated in the DI Plan. After

ending his employment with DI, he remained a participant in the DI Plan. When the DI and Amentum Plans merged in 2021, Middleton’s assets were transferred to the Post-Merger Amentum Plan, and he became a participant in the Post-Merger Amentum Plan. Middleton remains a participant in this plan. Plaintiff Lawrence was employed by a firm that Amentum acquired in 2021. He was a participant in the Legacy Amentum Plan beginning in the second quarter of 2021, and he made contributions in 2021. He remained a participant in the Legacy Amentum Plan through the fourth quarter of 2021. Lawrence no longer participates in the plan.

1 The following facts are taken from Plaintiffs’ Third Amended Complaint (“TAC”). Defendants are the corporate entities (DI and Amentum) that sponsored the Plans, the committees that administered the Plans (the Retirement and Employee Benefit Plans Committee (“DI Committee”), the Amentum Benefits Administration Committee (“ABAC”), and the Amentum Retirement & Investment Committee (“ARIC”)), and the individual members that made up Defendants’ respective committees.2

Highly summarized,3 Plaintiffs allege that the DI Plan (a defined contribution plan as defined by ERISA) had between $350 million and $550 million in assets. As of December 31, 2020, the DI Plan had 11,108 participants and $547,565,337 in total assets (approximately $474,164,642 of which were invested in mutual funds). Plaintiffs assert that Defendants had substantial bargaining power and failed to leverage this power to offer less expensive investment options that were identical to or substantially the same as the investment options in the DI Plan. In addition, they allege that Defendants failed to move DI Plan assets into substantially the same, but less expensive, options. Plaintiffs also allege that DI assets are held in trust and that the DI Plan was funded by a

combination of wage contributions from employees and company contributions from the Plan sponsor or affiliates. Forfeitures arise when contributions are made to a participant’s account, but the participant terminates employment with the company sponsoring the plan before the participant is 100% vested. Plaintiffs allege that the DI Plan had forfeitures that could have been used to pay administrative expenses, but Defendants instead improperly applied the forfeitures to reduce the company’s own contributions.

2 Plaintiffs name 11 members and also include John and Jane Does 1-30. 3 The Court will discuss the specific allegations as to both the DI and Amentum Plans in greater detail below when considering Plaintiffs’ claims. Plaintiffs allege that the Legacy Amentum Plan (a defined contribution plan as defined by ERISA) had $322 million as of December 31, 2019. They assert that the Legacy Amentum Plan included imprudent investment options at the time of the December 31, 2021 merger. After the merger of the Legacy Amentum Plan and the DI Plan, the Post-Merger Amentum Plan held over $1.63 billion in assets and had 21,754 participants. Plaintiffs allege that the Post-Merger Amentum

Plan had imprudent investments that migrated into it from either the DI Plan or the Legacy Amentum Plan, and the fiduciaries failed to administer it in a prudent manner and failed to fulfill their fiduciary duties. In addition, Plaintiffs allege that there were forfeitures in the Amentum Plan in both 2021 and 2022 (approximately $870,000 from 2021 through 2022) that were improperly used. Plaintiffs bring 10 claims: (1) breach of fiduciary duty to select, monitor, retain, and remove investment options and failure to engage in a reasoned and impartial decision-making process with regard to forfeited funds as to the DI Plan; (2) breach of fiduciary duty to select, monitor, retain, and remove investment options and failure to engage in a reasoned and impartial

decision-making process with regard to forfeited funds as to the Legacy and Post-Merger Amentum Plan; (3) failure to monitor other fiduciaries (as to the investment options and forfeited funds) of the DI Plan; (4) failure to monitor other fiduciaries (as to the investment options and forfeited funds) of the Legacy and Post-Merger Amentum Plan; (5) breach of fiduciary duty of loyalty in the use of forfeited funds as to the DI Plan; (6) breach of fiduciary duty of loyalty in the use of forfeited funds as to the Amentum Plan;4 (7) prohibited transactions by the use of forfeited funds as to the DI Plan; (8) prohibited transactions by the use of forfeited funds as to the Amentum

4 Plaintiffs do not differentiate between the Legacy and/or the Post-Merger Amentum Plan in these allegations. The Legacy Amentum Plan was in effect in 2021, and the Post-Merger Amentum Plan was in effect in 2022. Plan; (9) breach of ERISA’s anti-inurement provision by the use of forfeited funds as to the DI Plan; and (10) breach of ERISA’s anti-inurement provision by the use of forfeited funds as to the Amentum Plan. Plaintiffs also bring this suit as a class action pursuant to Fed. R. Civ. P. 23. Although class certification has not yet occurred, Plaintiffs propose that the class includes all participants and

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Bluebook (online)
Middleton v. Amentum Parent Holdings LLC, Counsel Stack Legal Research, https://law.counselstack.com/opinion/middleton-v-amentum-parent-holdings-llc-ksd-2025.