Other Scientific and Technical Consulting Services (NAICS 541690) contracts expiring 2027–2028
9 small-business set-aside contracts in NAICS 541690 end between Apr 18, 2027 and Apr 18, 2028, with $87,457,932 obligated so far. Biggest buyers: Defense Threat Reduction Agency, Defense Counterintelligence and Security Agency, National Institutes of Health. By set-aside: 3 WOSB/EDWOSB, 2 8(a), 2 small business, 1 HUBZone, 1 SDVOSB.
Data as of Oct 17, 2026 from USAspending.gov (refreshed weekly, last Oct 17, 2026). 3 open NAICS 541690 bids now · NAICS 541690 size standard · How the score works
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Contracts ending, highest score first
| Score | Incumbent | Agency | Industry | State | Total obligated | Ends |
|---|
| 78 | CHEROKEE INSIGHTS LLC DITMAC BEHAVIORAL THREAT ANALYSIS CENTER SUPPORT SERVICES Why 78? ends in 9 mo · no option years left · $24M · sole source last time · standalone contract- Ends in about 9 months (Jul 14, 2027). +26/30
- No unexercised option years on record, so new work likely has to be awarded when it ends. +20/20
- $24M obligated so far. +18/20
- Last time it was not available for competition (sole source), so the agency could sole-source the follow-on again. +4/20
- Standalone contract, so the follow-on is not tied to an existing vehicle. +10/10
- The incumbent has held it since 2023 (about 3 years).
| Department of Defense Defense Counterintelligence and Security Agency | Other Scientific and Technical… | VA | $24,355,072 | Jul 14, 2027 |
| 75 | WATERCOURSE ENGINEERING, INC. KLAMATH AND LOST RIVER MODELING SUPPORT Why 75? ends in 10 mo · no option years left · $330K · 1 offer last time · standalone contract- Ends in about 10 months (Aug 31, 2027). +22/30
- No unexercised option years on record, so new work likely has to be awarded when it ends. +20/20
- $330K obligated so far. +3/20
- Last time it was competed under simplified acquisition procedures, and only 1 offer came in. +20/20
- Standalone contract, so the follow-on is not tied to an existing vehicle. +10/10
- The incumbent has held it since 2022 (about 4 years).
| Department of the Interior Bureau of Reclamation | Other Scientific and Technical… | OR | $329,930 | Aug 31, 2027 |
| 73 | K2 GROUP, INC. TECHNICAL SUPPORT GROUP SERVICES Why 73? ends in 8 mo · options could run to Jun 2029 · $25M · 2 offers last time · standalone contract- Ends in about 8 months (Jun 13, 2027). +28/30
- Unexercised options on record could extend it to Jun 13, 2029, so the agency may extend instead of recompeting. +0/20
- $25M obligated so far. +18/20
- Last time it was competed among eligible firms (set-aside competition) with 2 offers. +17/20
- Standalone contract, so the follow-on is not tied to an existing vehicle. +10/10
- The incumbent has held it since 2024 (about 2 years).
| Department of Defense Defense Threat Reduction Agency | Other Scientific and Technical… | VA | $25,220,936 | Jun 13, 2027 |
| 71 | AYUDA COMPANIES POTABLE WATER TESTING SERVICES. Why 71? ends in 11 mo · no option years left · $390K · 2 offers last time · standalone contract- Ends in about 11 months (Sep 30, 2027). +20/30
- No unexercised option years on record, so new work likely has to be awarded when it ends. +20/20
- $390K obligated so far. +4/20
- Last time it was competed under simplified acquisition procedures with 2 offers. +17/20
- Standalone contract, so the follow-on is not tied to an existing vehicle. +10/10
- The incumbent has held it since 2022 (about 4 years).
| Department of Commerce National Institute of Standards and Technology | Other Scientific and Technical… | CO | $389,748 | Sep 30, 2027 |
| 62 | CCS ASSOCIATES, INC. THE PURPOSE OF THIS REQUIREMENT IS TO PROVIDE REGULATORY SERVICES AND TECHNICAL SUPPORT… Why 62? ends in 11 mo · options could run to Sep 2028 · $12M · 3 offers last time · standalone contract- Ends in about 11 months (Sep 29, 2027). +20/30
- Unexercised options on record could extend it to Sep 29, 2028, so the agency may extend instead of recompeting. +0/20
- $12M obligated so far. +15/20
- Last time it was competed among eligible firms (set-aside competition) with 3 offers. +17/20
- Standalone contract, so the follow-on is not tied to an existing vehicle. +10/10
- The incumbent has held it since 2023 (about 3 years).
| Department of Health and Human Services National Institutes of Health | Other Scientific and Technical… | CA | $12,412,251 | Sep 29, 2027 |
| 62 | DAGER TECHNOLOGY , LLC VULCAN'S FORGE AND REDOPS Why 62? ends in 11 mo · options could run to Sep 2029 · $4.0M · 1 offer last time · standalone contract- Ends in about 11 months (Sep 26, 2027). +21/30
- Unexercised options on record could extend it to Sep 26, 2029, so the agency may extend instead of recompeting. +0/20
- $4.0M obligated so far. +11/20
- Last time it was competed under simplified acquisition procedures, and only 1 offer came in. +20/20
- Standalone contract, so the follow-on is not tied to an existing vehicle. +10/10
- The incumbent has held it since 2024 (about 2 years).
| Department of Justice Bureau of Alcohol, Tobacco, Firearms and Explosives Acquisition and Property Management Division | Other Scientific and Technical… | VA | $4,026,871 | Sep 26, 2027 |
| 58 | ECONOMETRICA, INC. MIDS VALUE INCENTIVES AND QUALITY REPORTING APPEALS SUPPORT CONTRACT Why 58? ends in 10 mo · options could run to Aug 2029 · $9.5M · 2 offers last time · vehicle holders only- Ends in about 10 months (Aug 14, 2027). +24/30
- Unexercised options on record could extend it to Aug 14, 2029, so the agency may extend instead of recompeting. +0/20
- $9.5M obligated so far. +14/20
- Last time it was competed in full and open competition with 2 offers. +17/20
- Ordered under an IDIQ contract (75FCMC18D0022); usually only holders of that vehicle can compete for the follow-on order. +3/10
- The incumbent has held it since 2024 (about 2 years).
| Department of Health and Human Services Centers for Medicare and Medicaid Services | Other Scientific and Technical… | MD | $9,475,309 | Aug 14, 2027 |
| 57 | SCICRUNCH OD: SERVICE: SUPPORT FOR DEVELOPMENT, MAINTENANCE AND DISTRIBUTION OF IDENTIFIERS FOR… Why 57? ends in 10 mo · options could run to Aug 2031 · $395K · 1 offer last time · standalone contract- Ends in about 10 months (Aug 29, 2027). +23/30
- Unexercised options on record could extend it to Aug 29, 2031, so the agency may extend instead of recompeting. +0/20
- $395K obligated so far. +4/20
- Last time it was competed under simplified acquisition procedures, and only 1 offer came in. +20/20
- Standalone contract, so the follow-on is not tied to an existing vehicle. +10/10
| Department of Health and Human Services National Institutes of Health | Other Scientific and Technical… | CA | $395,000 | Aug 29, 2027 |
| 56 | GOLDBELT PROFESSIONAL SERVICES, LLC EPB STAFFING CONTRACT Why 56? ends in 8 mo · options could run to Jun 2029 · $11M · sole source last time · standalone contract- Ends in about 8 months (Jun 30, 2027). +27/30
- Unexercised options on record could extend it to Jun 30, 2029, so the agency may extend instead of recompeting. +0/20
- $11M obligated so far. +15/20
- Last time it was not available for competition (sole source), so the agency could sole-source the follow-on again. +4/20
- Standalone contract, so the follow-on is not tied to an existing vehicle. +10/10
- The incumbent has held it since 2024 (about 2 years).
| Department of Health and Human Services Office of the Assistant Secretary for Financial Resources | Other Scientific and Technical… | VA | $10,852,815 | Jun 30, 2027 |
Largest: K2 Group, Inc., $25,220,936 with Defense Threat Reduction Agency, ends Jun 13, 2027.
Frequently asked questions
How many NAICS 541690 set-aside contracts are expiring soon?
As of Oct 17, 2026, AwardWatchdog tracks 9 small-business set-aside recompete opportunities in NAICS 541690 (Other Scientific and Technical Consulting Services) whose current period of performance ends between Apr 18, 2027 and Apr 18, 2028, with $87,457,932 obligated so far. 0 score as high priority (80+).
Which agencies have the most NAICS 541690 contracts ending?
By dollars obligated: Defense Threat Reduction Agency ($25,220,936), Defense Counterintelligence and Security Agency ($24,355,072), National Institutes of Health ($12,807,251). Source: USAspending.gov, as of Oct 17, 2026.
Which NAICS 541690 contract ends first?
K2 Group, Inc.'s contract with Defense Threat Reduction Agency (HDTRA124C0038) ends Jun 13, 2027, with $25,220,936 obligated.
End dates are the current period of performance and can move when options are exercised or the contract is extended. Not affiliated with the U.S. government; confirm on USAspending.gov and SAM.gov.