BLUF: Lawrence Livermore National Security, LLC's contract to manage Lawrence Livermore National Laboratory has reached $41,316,801,717.75 in total obligations from the Department of Energy, following three funding modifications posted July 30-31, 2026.

The contract, award number DE-AC52-07NA27344, was originally signed May 8, 2007 and covers the management and operation of Lawrence Livermore National Laboratory (LLNL) in Livermore, California. It is administered by the Department of Energy's NNSA MO Contracting office and runs through a current period-of-performance end date of September 30, 2031.

Why it matters: This is one of the Department of Energy's largest standing management-and-operation (M&O) contracts, placing Lawrence Livermore National Security, LLC in the same tier of nuclear-security-enterprise contractors as the operators of Sandia, Los Alamos, and Oak Ridge national laboratories. For contractors and subcontractors in the DOE nuclear security supply chain, the size and steady modification cadence of this vehicle underscore how much recurring, long-duration federal spending flows through laboratory M&O contracts rather than shorter-term competitive awards. The contract's FFRDC structure, established under FAR Part 35, also means opportunities tied to it typically run through the prime contractor's subcontracting and small-business programs rather than direct federal solicitations.

By the numbers:

• Total obligations to date: $41,316,801,717.75
• Awarding agency: Department of Energy, NNSA MO Contracting office
• Original award date: May 8, 2007
• Current period-of-performance end date: September 30, 2031
• Product/service classification: AZ11 — R&D, Other Research and Development (Basic Research)
• Recent modifications: mod 930 (+$172,183,764.99, July 30, 2026), mod 931 (+$132,797,122.92, July 30, 2026), mod 932 (-$140,462,610.78, July 31, 2026)

The contract is structured as a Performance-Based Management Contract (PBMC) under which Lawrence Livermore National Security, LLC accomplishes missions and programs assigned by the Department of Energy as one of the department's Office of Defense Programs multi-program laboratories. Three modifications posted in the final two days of July 2026 moved a combined net of roughly $164.5 million in obligated funding, split between two funding increases on July 30 and a partial de-obligation on July 31, according to the USAspending.gov transaction record for the award.

Source: USAspending.gov