Lockheed Martin wins up to $53.86B multiyear contract modification for PAC-3 MSE interceptor production

The U.S. Department of Defense has awarded Lockheed Martin a seven-year undefinitized contract action, a contract modification where key terms are negotiated and finalized after initial performance begins, for production-related work tied to PAC-3 Missile Segment Enhancement (MSE) interceptors, according to a report published by Yahoo Finance on July 29, 2026. The modification is described as supporting multiyear output of the PAC-3 MSE system, an interceptor program designed to improve ballistic missile defense performance against certain threats.

The Yahoo Finance report states the contract action modification is worth up to $53.86 billion for the production effort. It also characterizes the overall government award as $58.62 billion in the headline framing of the story. The difference between those figures is not explained in the available text, and it remains unclear in the report whether the larger number includes additional elements beyond the production scope or reflects a broader award total.

PAC-3 MSE is an upgraded version of the PAC-3 interceptor used in ground-based ballistic missile defense. In general terms, the MSE effort focuses on improving interceptor capability and performance through an enhanced missile segment. Lockheed Martin, as a prime contractor for portions of the PAC-3 program, is positioned to supply interceptors and related production deliverables under government procurement and production contracting cycles.

The contract is described as a modification to an existing agreement rather than a brand-new standalone award. Undefinitized contract actions are used when the government wants to start work sooner but cannot fully settle contract details, including finalized pricing and some scope terms, at the time the contract is issued. The government typically moves toward definitization later, after additional negotiations and planning steps.

For Lockheed Martin, the award fits within the defense company’s broader focus on air and missile defense, where demand is shaped by U.S. and partner assessments of missile threats and the need to sustain interceptor production capacity. Multiyear arrangements are often intended to help manufacturers plan procurement of parts, manage production staffing, and maintain delivery schedules over multiple years, rather than relying on shorter single-year buys.

The Yahoo Finance report does not provide additional specifics in the available material about delivery locations, contract start dates, or how quickly the program will ramp output. It also does not disclose any percentage of work share for subcontractors or whether the modification affects prior year procurement under the PAC-3 line. Lockheed Martin was not quoted in the available text, so there is no company statement on expected ramp rates or performance targets included here.