Question · Q4 2025
Mariana Perez Morrow followed up on nuclear opportunities, asking if the mentioned margin-accretive nature was due to significant EBITDA per contract or non-consolidated joint venture EBITDA. She also inquired about the speed of these opportunities, specifically how much of the $20 billion pipeline awaiting award is nuclear-related. Additionally, she asked about the drivers, beyond nuclear, that would achieve the 8.5%-9% margins expected by FY28, given that Q4 FY26 margins were lighter than anticipated.
Answer
COO Steve Arnette clarified that margin expansion in the front-end nuclear energy market is primarily due to the nature of the work (U.S. commercial and international), not unconsolidated joint ventures. CEO John Heller stated that nuclear represents about 17% of Amentum's current business, noting that while demand is real, nuclear projects take time, with significant engineering work for SMRs expected through this decade. He did not specify the nuclear portion of the $20 billion pipeline. Steve Arnette reiterated that the aggregate of accelerating growth areas (nuclear, critical digital infrastructure, space systems) are margin accretive and will outpace other portfolio growth, combined with cost synergy initiatives (30-50 basis points by FY27-FY28), to drive overall margin expansion.
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