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Significant Contract Modifications ($10M+) — September 04, 2026

Significant Contract Modifications ($10M+)

By Gunpowder Editorial ·

6 total filings analysed

Executive Summary

The six contracts analyzed, totaling $1.34B in obligations, are overwhelmingly civilian (4 of 6), with only two defense-related awards (Lockheed Martin at $1.5M and a DHS Coast Guard contract). The dominant theme is State Department and USAID infrastructure and development spending, led by Caddell Construction's $484M embassy build in Mongolia and DAI Global's $358M trade initiative.

The highest-conviction signal is Caddell's full-and-open competitive win on a large firm-fixed-price contract, which carries execution risk on a complex overseas project. A key risk is the expired or underperforming status of several contracts (ATCC, Guidehouse, ManTech), suggesting limited current revenue visibility from these awards. Investors should watch for recompete announcements for the ATCC biodefense repository and ManTech's E DEFEND network defense program as potential catalysts.

Materiality, sentiment, and priority are scored by Gunpowder’s analysis pipeline. How we score filings →

Tracking the trend? Catch up on the prior Significant Contract Modifications ($10M+) digest from September 03, 2026.

Investment Signals (5)

  • Caddell Construction wins $484M firm-fixed-price embassy contract, signaling strong federal construction positioning (MEDIUM)

    Caddell's competitive win for the U.S. Embassy in Ulaanbaatar provides a $91.4M annual revenue stream over 5.3 years, though firm-fixed-price pricing elevates execution risk on a complex foreign project.

  • DAI Global secures $358M USAID cost-plus contract for Prosper Africa initiative, reducing financial risk (MEDIUM)

    The cost-plus-fixed-fee structure provides stable margins for DAI Global on a $71.6M annual revenue stream, with options potentially increasing total value to $520.8M.

  • ManTech's $221M GSA contract shows negative outlayed amount, signaling potential accounting adjustments (MEDIUM)

    The -$371,167 outlayed amount on ManTech's E DEFEND network defense contract is unusual and may indicate prior overpayments or scope reductions, warranting caution in revenue recognition.

  • ATCC's $141M NIH biodefense repository contract ended with only $63.5M outlayed, implying underperformance (MEDIUM)

    The gap between obligated ($141M) and outlayed ($63.5M) funds on the expired MID BRR contract suggests scope changes or delays, raising questions about ATCC's execution ahead of a potential recompete.

  • Lockheed Martin's $1.5M sole-source Coast Guard award reinforces niche maritime software position (LOW)

    The non-competed delivery order for PAWSS system maintenance confirms Lockheed Martin's entrenched role in Coast Guard vessel traffic management, though the small contract size limits materiality.

Risk Flags (4)

  • Execution [HIGH RISK]

    Caddell Construction's $484M firm-fixed-price embassy contract in Mongolia carries high cost-overrun risk on a complex design-build project in a foreign location.

  • Concentration [MEDIUM RISK]

    Two of the six contracts (ATCC at $141M and Guidehouse at $130M) have expired performance periods, indicating limited current revenue generation from these awards and potential reliance on recompetes.

  • Budget [MEDIUM RISK]

    The $484M State Department embassy contract and $358M USAID contract are civilian awards that could face vulnerability under a Continuing Resolution (CR) if Congress fails to pass full-year appropriations, particularly for overseas construction and development programs.

  • Competition [LOW RISK]

    Lockheed Martin's $1.5M sole-source award for PAWSS support may face protest risk if competitors challenge the non-competed basis, though the small size limits impact.

Opportunities (4)

  • ManTech's $221M E DEFEND network defense contract (ending April 2024) positions the company for a recompete or follow-on cybersecurity work with GSA, given its incumbent status and full-and-open competitive win.

  • ATCC's expired $141M NIH biodefense repository contract creates a recompete opportunity for the incumbent, with strong bipartisan support for infectious disease research and biodefense funding.

  • DAI Global's $358M USAID contract includes options that could increase total value to $520.8M, representing a 46% upside if fully exercised, with cost-plus pricing reducing financial risk.

  • Guidehouse Digital's $130M NIH bioinformatics contract (expired 2022) signals potential for follow-on health IT work, given NIH's continued investment in biomedical research digitization.

Sector Themes (3)

  • Two large civilian contracts—Caddell's $484M State Department embassy and DAI Global's $358M USAID trade initiative—total $842M (63% of aggregate value), signaling sustained investment in diplomatic facilities and international development programs.

  • Two NIH contracts (ATCC $141M, Guidehouse $130M) totaling $271M reflect stable demand for biodefense repository management and bioinformatics IT support, though both contracts have expired, shifting focus to recompete opportunities.

  • ManTech's $221M E DEFEND network defense contract (cost-plus award fee) demonstrates GSA's commitment to enterprise cybersecurity, with the contract's Arlington, VA performance location suggesting close client integration and potential for follow-on work.

Watch List (5)

  • 👁

    {"entity" => "Caddell Construction Co. (DE), LLC", "reason" => "$484M firm-fixed-price embassy contract with high execution risk; monitor margin performance and project milestones.", "trigger" => "Quarterly earnings reports for revenue recognition and margin data; project delay or milestone announcements"}

  • 👁

    {"entity" => "ManTech International Corporation", "reason" => "$221M E DEFEND contract ending April 2024; recompete opportunity with incumbent advantage.", "trigger" => "GSA re-compete solicitation or extension announcement before April 2024"}

  • 👁

    {"entity" => "American Type Culture Collection (ATCC)", "reason" => "Expired $141M NIH biodefense repository contract; recompete could restore revenue stream.", "trigger" => "NIH/NIAID solicitation for MID BRR or similar biodefense repository services"}

  • 👁

    {"entity" => "DAI Global LLC", "reason" => "$358M USAID contract with options up to $520.8M; option exercises signal government commitment.", "trigger" => "USAID option exercise announcements"}

  • 👁

    {"entity" => "Guidehouse Digital LLC", "reason" => "Expired $130M NIH bioinformatics contract; potential for follow-on health IT work.", "trigger" => "NIH recompetition for bioinformatics software support (NAICS 541512)"}

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