Top GSA all other professional, scientific, and technical services contractors
In the 12 months ending Oct 5, 2026, the General Services Administration obligated $48.1M in net prime contract dollars under NAICS 541990, up 481.7% from $8.3M in the preceding 12 months. 9 prime contractors received positive obligations, and 1 of them accounted for 80% of that spend.
Prime contracts funded by the General Services Administration. 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 GSA contractors for NAICS 541990
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 | Clear Lincs LLC | $46.0M | $6.2M | 95.7% | — |
| 2 | Michael Stapleton Associates, Ltd. | $608K | $1.5M | 1.3% | — |
| 3 | Tenfold Information Design Services LLC | $594K | $293K | 1.2% | — |
| 4 | PDG, Inc. | $300K | $0 | 0.6% | New |
| 5 | National Institute of Building Sciences | $231K | $22K | 0.5% | ▲ 3 |
| 6 | National Industries for the Blind | $151K | $122K | 0.3% | ▼ 2 |
| 7 | Page Conservation Inc. | $134K | $0 | 0.3% | New |
| 8 | Artcare Execs NYC LLC | $30K | $0 | 0.1% | New |
| 9 | Bloomberg Industry Group, Inc. | $21K | $20K | 0.0% | — |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Clear Lincs LLC$6.2M → $46.0M (+$39.8M) · now #1
- Tenfold Information Design Services LLC$293K → $594K (+$301K) · now #3
- PDG, Inc.$0 → $300K (+$300K) · now #4
Largest declines
- Michael Stapleton Associates, Ltd.$1.5M → $608K (−$913K) · now #2
- Dawson CMS, LLC$67K → $0 (−$67K) · no latest-period obligations
- National Academy of Sciences$54K → $0 (−$54K) · no latest-period obligations
New to this market
1 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Page Conservation Inc. | Jan 27, 2026 | $134K |
Where the money comes from
Funding sub-agencies within the General Services Administration, 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 |
|---|---|---|---|
| Public Buildings Service | $47.9M | $8.0M | Up $39.9M (497.5%) |
| Federal Acquisition Service | $151K | $108K | Up $44K (40.4%) |
| Office of Inspector General | $21K | $86K | Down $66K (76.1%) |
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 |
|---|---|---|---|
| 47PM0925F0030 | Michael Stapleton Associates, Ltd. TRUCK SCREENING SERVICES FOR 1 BASE YEAR AND 4 OPTION YEARS: BASE YEAR POP - OCTOBER 1, 2025 THROUGH SEPTEMBER 30, 2026 | $1.2M | Aug 31, 2027 |
| 47PA0026F0008 | Clear Lincs LLC ADMINISTRATIVE & MANAGMENT SUPPORT SERVICES | $40.3M | Aug 31, 2027 |
Common questions
Who are the top GSA contractors for NAICS 541990?
In the latest 12 months, Clear Lincs LLC ($46.0M), Michael Stapleton Associates, Ltd. ($608K), Tenfold Information Design Services LLC ($594K) received the most GSA obligations for all other professional, scientific, and technical services.
How concentrated is this market?
The eight largest primes held 100.0% of positive obligations, and Clear Lincs LLC alone held 95.7%. 1 contractors won their first obligations in this market during the latest 12 months.
Are any large GSA NAICS 541990 contracts ending soon?
2 of the largest awards in this market reach their current end date in the next 18 months. The first is 47PM0925F0030 (Michael Stapleton Associates, Ltd., $1.2M obligated), ending Aug 31, 2027. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
Related markets
NAICS 541990 across all agencies
DoD · NAICS 541990
$5.5BDOE · NAICS 541990
$2.8BHHS · NAICS 541990
$1.3BDOT · NAICS 541990
$557.4MUSAID · NAICS 541990
$277.4MCommerce · NAICS 541990
$213.3MState Department · NAICS 541990
$169.3MVA · NAICS 541990
$110.0MFigures 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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