Mayer Brown LLP
Chicago, IL
- UEI
- LH1RQPGDUVK7
- CAGE
- 4BDX5
- Primary NAICS
- 541110 Offices of Lawyers
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Partnership or Limited Liability Partnership
- SAM.gov registration date
- Physical address
- 71 S Wacker Dr # 3300, Chicago, IL 60606, USA
- Website
- mayerbrown.com
- Founded
- 1863
- Employees
- 1K-5K
- Estimated annual revenue
- $1B-$10B
- Industry
-
- Consumer Discretionary
- Diversified Consumer Services
- Specialized Consumer Services
- Legal Services
- SIC code
- 81 Legal Services
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $2,931,925 |
| FY2025 | $4,986,326 |
| FY2024 | $1,603,532 |
| FY2023 | $1,380,101 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | International Development Finance Corporation | $2,931,925 |
Contract vehicles
No active vehicles.
1 expired vehicle
Contract awards
Latest 5 listed here. See the rest on GovTribe.
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About the company
Mayer Brown LLP, a Chicago-headquartered global law firm, delivers specialized international transactional legal advisory services to the federal government exclusively as a prime contractor, with no subcontract footprint. The firm operates in the full-and-open competitive market with no small-business set-aside designations across its federal work, competing on merit under NAICS 541110 (Offices of Lawyers) and PSC code 5099 (Support—Professional: Legal).
The International Development Finance Corporation dominates Mayer Brown's federal customer concentration, accounting for 47 of 51 total awards (92% by count) and $84.1 million of $85.6 million in combined potential value (98% by dollars). Three other customer agencies—the Overseas Private Investment Corporation (two awards, $452 thousand), the Department of Housing and Urban Development (one award, $1 million), and the US Agency for Global Media (one award, $59 thousand)—round out the active federal footprint. The concentration is near-total: DFC's awards span 2021 through August 2026, with recent delivery orders addressing complex development finance transactions across Latin America, Africa, India, and Southeast Asia in investment funds, equity financing, loan guarantees, political risk insurance, and project development.
Mayer Brown sits on one primary vehicle: the International Legal Support Services (ILSS) IDIQ, a $50 million multiple-award contract issued by DFC on August 19, 2021, now carrying 43 task orders worth $11.3 million in combined potential value. All recent work flows through ILSS delivery orders. Representative recent awards include a $586,017.70 delivery order on July 16, 2026, for legal advisory services on the DP World Berbera project; a $799,158.56 delivery order on July 16, 2026, for METALFOR S.A. transaction support; a $450,562.25 delivery order on August 31, 2026, for VALOR CAPITAL transaction advisory; and a $340,403.70 delivery order on August 11, 2026, for GATEWAY STRATEGIC FUND legal support. A single older award from the US Agency for Global Media—a $59,400 purchase order on December 1, 2021, for immigration attorney services through November 2023—represents an outlier from the DFC-centric footprint. Work is performed in Washington, DC, Chicago, Illinois, and remotely from Mayer Brown's offices.
Activity has grown substantially: one award in 2022, eight in 2023, eighteen in 2024, six in 2025, and nine through August 2026. The parent ILSS vehicle expires August 19, 2026, placing the vehicle in recompete cycle; fourteen awards carrying combined potential value of $4.9 million hold ultimate completion dates within the next twenty-four months and face renewal or recompete exposure. Mayer Brown's federal revenue remains modest relative to the firm's global scale: combined dollars obligated across all awards total $12.5 million (15% of the $85.6 million combined potential value), reflecting the firm's role as a specialized legal counsel provider rather than a systems integrator or large service provider.
Quick answers
Is Mayer Brown LLP registered in SAM.gov?
Yes. Mayer Brown LLP's SAM.gov registration is active through March 2, 2027.
Which contract vehicles does Mayer Brown LLP hold?
Mayer Brown LLP holds a place on 1 federal contract vehicle: ILSS.
How much has Mayer Brown LLP received in federal contracts?
Federal contracts obligated $4,986,326 to Mayer Brown LLP in fiscal year 2025 and $10,901,884 in fiscal years 2023 through 2027.
How does Mayer Brown LLP rank among federal contractors?
Mayer Brown LLP ranked #4 at the International Development Finance Corporation, #7 in NAICS 54111 and #21 in NAICS 5411 in FY2025.
What is Mayer Brown LLP's most recent federal award?
Mayer Brown LLP's most recent federal contract award is Valor capital - DFC-valor americas strategic capital, L.P (77344426F0112), from International Development Finance Corporation, on August 31, 2026.
On GovTribe
See Mayer Brown LLP's full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Funding analysis by agency, NAICS and set-aside
- Similar vendors