Top DOT all other support services contractors
In the 12 months ending Oct 5, 2026, the Department of Transportation obligated $11.0M in net prime contract dollars under NAICS 561990, up 196.0% from $3.7M in the preceding 12 months. 15 prime contractors received positive obligations, and 3 of them accounted for 80% of that spend.
Prime contracts funded by the Department of Transportation. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top DOT contractors for NAICS 561990
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | Macrosys, LLC | $4.3M | $954K | 39.4% | ▲ 1 |
| 2 | Guidehouse Inc. | $3.2M | $0 | 29.2% | New |
| 3 | Keybridge Technologies, LLC | $1.3M | $1.3M | 11.7% | ▼ 2 |
| 4 | Weris, Inc | $508K | $0 | 4.6% | New |
| 5 | Every Citizen HAS Opportunities Inc | $445K | $440K | 4.1% | ▼ 1 |
| 6 | Xentity Corporation | $372K | $491K | 3.4% | ▼ 3 |
| 7 | MY Business Matches Inc. | $269K | $150K | 2.5% | ▼ 1 |
| 8 | Spatial Front Inc | $208K | $203K | 1.9% | ▼ 3 |
| 9 | Hargrove, LLC | $169K | $21K | 1.6% | — |
| 10 | The Tioga Group, Inc. | $75K | −$2K | 0.7% | New |
| 11 | Hadley Exhibits, Inc. | $60K | $0 | 0.5% | New |
| 12 | Hunt Underwater Specialties, LLC | $20K | $0 | 0.2% | New |
| 13 | American Public Works Association | $18K | $0 | 0.2% | New |
| 14 | American Society for Testing and Materials | $14K | $0 | 0.1% | New |
| 15 | Datasafe Inc | $1K | $3K | 0.0% | ▼ 3 |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Macrosys, LLC$954K → $4.3M (+$3.4M) · now #1
- Guidehouse Inc.$0 → $3.2M (+$3.2M) · now #2
- Weris, Inc$0 → $508K (+$508K) · now #4
Largest declines
- Acme Safety & Supply Corporation$141K → $0 (−$141K) · no latest-period obligations
- Xentity Corporation$491K → $372K (−$119K) · now #6
- Steer Davies & Gleave Inc.$111K → −$2K (−$114K) · no latest-period obligations
New to this market
3 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Guidehouse Inc. | May 13, 2026 | $3.2M |
| Hadley Exhibits, Inc. | May 20, 2026 | $60K |
| American Society for Testing and Materials | Apr 29, 2026 | $14K |
Where the money comes from
Funding sub-agencies within the Department of Transportation, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| Immediate Office of the Secretary of Transportation | $5.7M | $1.8M | Up $3.9M (212.7%) |
| Federal Aviation Administration | $4.5M | $1.4M | Up $3.1M (215.3%) |
| Federal Highway Administration | $633K | $455K | Up $179K (39.3%) |
| Saint Lawrence Seaway Development Corporation | $80K | $9K | Up $71K (806.2%) |
| Maritime Administration | $14K | $0 | New |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| 693C7323C000006 | Every Citizen HAS Opportunities Inc MAIL CENTER OPERATIONS, RECEPTIONIST AND SITE LABOR/FLEET ASSISTANCE | $1.8M | Jan 31, 2027 |
| 693KA926F00086 | Guidehouse Inc. SERVICES TO ENSURE AND PROMOTE AVIATION SAFETY IN SUPPORT OF NATIONAL SECURITY AND THE NATIONAL AIRSPACE SYSTEM (NAS). | $3.2M | May 18, 2027 |
| 693JK426F96019N | Macrosys, LLC THE CONTRACTOR SHALL FURNISH ALL MATERIALS AND PERSONNEL NECESSARY TO PROVIDE THE BUREAU OF TRANSPORTATION STATISTICS (BTS) WITH SERVICES TO PERFORM THE TASK ORDER (TO) TITLED… | $2.1M | Dec 24, 2027 |
Common questions
Who are the top DOT contractors for NAICS 561990?
In the latest 12 months, Macrosys, LLC ($4.3M), Guidehouse Inc. ($3.2M), Keybridge Technologies, LLC ($1.3M) received the most DOT obligations for all other support services.
How concentrated is this market?
The eight largest primes held 96.7% of positive obligations, and Macrosys, LLC alone held 39.4%. 3 contractors won their first obligations in this market during the latest 12 months.
Are any large DOT NAICS 561990 contracts ending soon?
3 of the largest awards in this market reach their current end date in the next 18 months. The first is 693C7323C000006 (Every Citizen HAS Opportunities Inc, $1.8M obligated), ending Jan 31, 2027. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
Related markets
NAICS 561990 across all agencies
DoD · NAICS 561990
$795.9MDOE · NAICS 561990
$58.7MDHS · NAICS 561990
$34.3MNASA · NAICS 561990
$34.2MVA · NAICS 561990
$33.4MDOJ · NAICS 561990
$16.6MInterior · NAICS 561990
$11.3MHHS · NAICS 561990
$10.1MFigures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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