PSC AD: Defense (Other) R&D
Service group
Code facts
- Part of
-
- A
- Codes under it
- 56
- Contract obligations
- $941,551,022 In FY2025
PSC codes and definitions come from the GSA PSC Manual and contract spending from SAM.gov/FPDS.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | -$42,803 |
| FY2026 | $659,601,909 |
| FY2025 | $941,551,022 |
| FY2024 | $2,406,184,039 |
| FY2023 | $2,881,732,235 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Accelint Intelligent Systems, LLC | $289,057,284 | |
| 2 | Seqirus Inc. | $80,769,000 | |
| 3 | Leidos, Inc. | $59,954,434 | |
| 4 | Lockheed Martin Corporation | $42,780,651 | |
| 5 | The Aerospace Corporation | $42,668,922 | |
| 6 | Two Six Labs, LLC | $31,974,958 | |
| 7 | The National Advanced Mobility Consortium, Inc. | $23,250,844 | |
| 8 | University Of Dayton | $14,316,120 | |
| 9 | Applied Research Associates, Inc. | $13,733,608 | |
| 10 | Assured Information Security, Inc. | $11,947,797 |
See the full FY2025 ranking of PSC AD contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Army | $303,296,382 | |
| 2 | Air Force | $80,483,533 | |
| 3 | Department of Health and Human Services | $80,463,272 | |
| 4 | Department of Transportation | $63,344,755 | |
| 5 | National Aeronautics and Space Administration | $42,645,115 | |
| 6 | Washington Headquarters Service | $34,325,177 | |
| 7 | Defense Advanced Research Projects Agency | $19,144,431 | |
| 8 | Department of the Navy | $17,016,362 | |
| 9 | Defense Threat Reduction Agency | $13,469,713 | |
| 10 | Office of the Secretary of Defense | $6,638,026 |
Top NAICS codes by obligations
| Rank | NAICS code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $142,544,943 | |
| 2 | 236210 Industrial Building Construction | $80,769,000 | |
| 3 | 488111 Air Traffic Control | $59,954,434 | |
| 4 | 541330 Engineering Services | $40,335,469 | |
| 5 | 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing | $4,336,810 | |
| 6 | 485111 Mixed Mode Transit Systems | $1,431,316 | |
| 7 | 332993 Ammunition (except Small Arms) Manufacturing | $1,361,698 | |
| 8 | 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) | $922,596 | |
| 9 | 541519 Other Computer Related Services | $572,983 | |
| 10 | 541511 Custom Computer Programming Services | $2,441 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | New Jersey | $293,400,615 | |
| 2 | Virginia | $102,134,668 | |
| 3 | Massachusetts | $81,848,347 | |
| 4 | Texas | $48,092,737 | |
| 5 | California | $43,636,090 | |
| 6 | New York | $27,680,658 | |
| 7 | Michigan | $23,144,268 | |
| 8 | Connecticut | $14,695,809 | |
| 9 | Ohio | $13,850,985 | |
| 10 | New Hampshire | $6,848,199 | |
| 11 | South Carolina | $6,168,233 | |
| 12 | Florida | $4,267,460 | |
| 13 | North Carolina | $3,856,721 | |
| 14 | Arizona | $3,504,326 | |
| 15 | Minnesota | $1,396,012 | |
| 16 | Colorado | $1,281,197 | |
| 17 | Tennessee | $512,966 | |
| 18 | Maryland | $245,644 | |
| 19 | Pennsylvania | $235,378 | |
| 20 | Utah | $127,630 | |
| 21 | Georgia | $23,155 | |
| 22 | Nevada | $829 |
Show all 22
Shares are of everything obligated under PSC AD in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 39 more
Latest 49 of 388 listed here. See the rest on GovTribe.
Codes under AD
Show all 56
Quick answers
What is PSC AD?
PSC AD is Defense (Other) R&D, a service group in PSC A, Research and Development.
What codes are under PSC AD?
PSC AD has 56 codes under it with their own GovTribe pages, including AD10 R&D – Ammunition, AD11 R&D – Defense Other: Ammunition (Basic Research) and AD12 R&D – Defense Other: Ammunition (Applied Research/
How much do federal agencies spend under PSC AD?
Federal contracts under PSC AD obligated $941,551,022 in fiscal year 2025 and $6,889,026,401 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC AD?
The contractors with the most obligated under PSC AD in fiscal years 2026 and 2027 are Accelint Intelligent Systems, LLC ($289,057,284); Seqirus Inc. ($80,769,000); and Leidos, Inc. ($59,954,434).
Which agencies buy the most under PSC AD?
The agencies that obligated the most under PSC AD in fiscal years 2026 and 2027 are Department of the Army ($303,296,382), Air Force ($80,483,533) and Department of Health and Human Services ($80,463,272).
Which NAICS codes are used with PSC AD?
The NAICS codes with the most obligated under PSC AD in fiscal years 2026 and 2027 are 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology); 236210 Industrial Building Construction; and 488111 Air Traffic Control.
Where is the work under PSC AD performed?
By place of performance, the states with the most contract obligations under PSC AD over the last 12 months are New Jersey ($293,400,615), Virginia ($102,134,668) and Massachusetts ($81,848,347).
What is the latest contract opportunity under PSC AD?
The latest contract opportunity under PSC AD is Military uniforms, award notice from Army National Guard, posted October 28, 2020.
On GovTribe
See everything under PSC AD
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
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