Active
Small Business
Overview
- Legal name
- KASTLE SYSTEMS LLC
- Registered location
- FALLS CHURCH, VA, USA
- Website
- Company website ↗
- Primary NAICS
- 561621 — Security Systems Services (except Locksmiths)
- Latest award activity
- Aug 27, 2026
Read company summary
KASTLE SYSTEMS LLC is associated with UEI QNG6P3YKN7F6 and CAGE 9M714 in public federal records. AcornBids currently links 65 prime awards totaling $14.3M in obligations to this entity. Its largest recorded federal customer by obligations is Securities and Exchange Commission. Its recorded federal awards include work classified as Security Systems Services (except Locksmiths); Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use. These categories describe the loaded award records, not a complete list of company capabilities. Its primary SAM.gov NAICS is 561621 (Security Systems Services (except Locksmiths)). Its public SAM.gov registration lists FALLS CHURCH, VA, USA.
At a glance
Lifetime prime obligations$14.3M
Prime awards65
Awards with future end dates17
Top-agency concentration39.3%
Prime contract obligations across loaded award records. Obligations are not revenue or contract ceilings. Summary updated Oct 3, 2026. Refresh pending; these totals may be out of date.
Business information
Public SAM.gov registration details.
- Legal name
- KASTLE SYSTEMS LLC
- UEI
- QNG6P3YKN7F6
- CAGE
- 9M714
- Registered address
- 6402 ARLINGTON BLVD, FALLS CHURCH, VA, 22042, USA
- Registration status
- Active
- Primary NAICS
- 561621 — Security Systems Services (except Locksmiths)
- SAM activation
- Aug 27, 2025
- Initial registration
- Nov 7, 2001
- Entity start
- May 1, 1972
- SAM updated
- Aug 27, 2025
- Registration expires
- Aug 25, 2026
- Fiscal year end
- Dec 31
- Place of incorporation
- VA, USA
Research brief
Source facts
- Loaded prime-award records link 65 awards and $14,260,287 in reported obligations to this legal entity. Source
- Recorded awards include Security Systems Services (except Locksmiths) (NAICS 561621); this classification is not proof of every company capability. Source
- An example award describes: ALARM SECURITY Source
Federal award analysis
Net transaction obligations by federal fiscal period.
Selected transaction obligations$6.2M
Prime contracts
Reported transaction obligations by federal fiscal period; includes deobligations. Missing transactions are not estimated. Coverage: 65 of 65 selected awards. Select a period to explore its awards.
Funding change
Dated, valued transaction obligations in equal-length adjacent periods; missing records are unknown. Default: last completed federal fiscal year. Percentage is unavailable when the prior period has no positive reported obligations.
| Measure | Reported value |
|---|---|
| Current period | Oct 1, 2025 – Sep 30, 2026 |
| Current obligations | $1.6M |
| Prior period | Oct 1, 2024 – Sep 30, 2025 |
| Prior obligations | $1.1M |
| Change | $527.4K |
| Growth | +47.2% |
Where the work is performed
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State tile map; darker tiles have larger absolute net obligations. Outlined tiles indicate net deobligations. Unshaded tiles have no reported transactions in this selection. Other locations appear in the table.
Agencies
| Category | Period obligations | Awards |
|---|---|---|
| Department of Homeland Security | $1.5M | 5 |
| Small Business Administration | $1.1M | 4 |
| Department of the Treasury | $1.1M | 14 |
| Commodity Futures Trading Commission | $869.1K | 5 |
| General Services Administration | $600.0K | 3 |
| Department of the Interior | $463.3K | 8 |
| Federal Election Commission | $293.4K | 1 |
| Department of Defense | $138.3K | 2 |
| Department of the Treasury | $131.5K | 1 |
| Department of Justice | $117.0K | 4 |
| National Endowment for the Arts | $70.4K | 2 |
| Merit Systems Protection Board | $33.7K | 1 |
| Selective Service System | $28.1K | 1 |
| Federal Labor Relations Authority | $27.0K | 2 |
| National Endowment for the Humanities | $23.3K | 2 |
| Department of Labor | $15.7K | 1 |
| Department of Health and Human Services | $15.7K | 1 |
| Executive Office of the President | $12.6K | 1 |
| Federal Mine Safety and Health Review Commission | $-649 | 3 |
| Department of Agriculture | $-1.3K | 1 |
| Securities and Exchange Commission | $-366.4K | 3 |
Offices
| Category | Period obligations | Awards |
|---|---|---|
| ADMINISTRATION FACILITIES TRAINING CONTRACTING DIVISION | $1.4M | 3 |
| OFC OF PERF MGMT AND CFO | $1.1M | 4 |
| COMMODITY FUTURES TRADING COMM | $869.1K | 5 |
| TREASURY OPERATIONS | $763.0K | 1 |
| OFFICE OF CENTRALIZED ACQUISITION SERVICES | $600.0K | 2 |
| FEDERAL ELECTION COMMISSION | $293.4K | 1 |
| FWS, IT SERVICES | $263.0K | 1 |
| IBC ACQ SVCS DIRECTORATE (00004) | $197.9K | 6 |
| ARC DIV PROC SVCS - TIGTA | $168.4K | 2 |
| COMMANDER | $144.0K | 1 |
| TCSC DEPARTMENTAL OFFICES | $131.5K | 1 |
| CIVIL DIVISION | $117.0K | 4 |
| CISA CONTRACTING ACTIVITY | $78.5K | 2 |
| NATIONAL ENDOWMENT FOR THE ARTS | $70.4K | 2 |
| OFFICE OF MANAGEMENT | $69.2K | 1 |
| ARC DIV PROC SVCS - EAC | $44.5K | 3 |
| ARC DIV PROC SVCS – MSC | $34.6K | 2 |
| MSPB FINANCIAL AND ADMIN MANAGEMENT | $33.7K | 1 |
| SELECTIVE SERVICE SYSTEM (SSS) | $28.1K | 1 |
| FLRA | $27.0K | 2 |
| NATIONAL ENDOWMENT FOR THE | $23.3K | 2 |
| DOL - CAS DIVISION 4 PROCUREMENT | $15.7K | 1 |
| NATIONAL INSTITUTES OF HEALTH NICHD | $15.7K | 1 |
| ARC DIV PROC SVCS - ACCESS BOARD | $12.8K | 2 |
| EOP - OFFICE OF ADMINISTRATION | $12.6K | 1 |
Naics
| Category | Period obligations | Awards |
|---|---|---|
| 561621 — Security Systems Services (except Locksmiths) | $6.2M | 64 |
| 334512 — Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use | $0 | 1 |
Psc
Vehicles
| Category | Period obligations | Awards |
|---|---|---|
| GS07F004GA | $5.0M | 43 |
| 2032H321A00009 | $894.5K | 2 |
| Unclassified | $664.3K | 16 |
| GS07F9740H | $0 | 1 |
| SECHQ111AD0004 | $-366.4K | 3 |
Set Asides
| Category | Period obligations | Awards |
|---|---|---|
| Unclassified | $5.5M | 49 |
| NO SET ASIDE USED. | $664.3K | 16 |
Recent federal awards
Prime contract awards. Select an award to review its history and source evidence.
| Award / description | Awarding agency | Obligations | Start date | End date |
|---|---|---|---|---|
| 15JC1V26F00000152ALARM SECURITY | Department of Justice | $0 | Oct 1, 2026 | Sep 30, 2027 |
| 70B01C26F00000601SECURITY SERVICES | Department of Homeland Security | $260.1K | May 1, 2026 | Apr 30, 2027 |
| 2032H326F00032KASTLE PHYSICAL ACCESS CONTROL SYSTEM (PACS) CARD READER INFRASTRUCTURE AND THE PERSONAL IDENTITY VERIFICATION (PIV) BADGING PROGRAM BLANKET PURCHASE AGREEMENT (BPA) ORDER | Department of the Treasury | $131.5K | Apr 1, 2026 | Mar 31, 2027 |
| 70RCSJ26P00000001KASTLE CARD OPERATIONS AND MAINTENANCE | Department of Homeland Security | $7.8K | May 23, 2026 | May 22, 2027 |
| 59310524F0008MAINTENANCE | National Endowment for the Arts | $88.7K | Jun 1, 2024 | May 30, 2029 |
| 20342124F00007KASTLE SECURITY SYSTEM MANAGEMENT SERVICES | Department of the Treasury | $21.1K | Sep 29, 2024 | Sep 28, 2025 |
| 9523ZY23C0003KASTLE SYSTEMS LLC ACCESS CONTROL SYSTEM OPERATIONS AND MAINTENANCE FOR REGIONAL OFFICES | Commodity Futures Trading Commission | $372.5K | Jan 1, 2023 | Dec 31, 2026 |
| 9523ZY26P0024KASTLE SECURITY SYSTEM CHANGES FOR CFTC'S HEADQUARTERS AND REGIONAL OFFICE LOCATIONS | Commodity Futures Trading Commission | $40.7K | May 1, 2026 | Sep 30, 2026 |
| 140D0424F1320KASTLE SECURITY SYSTEM MONITORING AND MAINTENANCE | Department of the Interior | $160.2K | Sep 23, 2024 | Sep 22, 2027 |
| 140D0426F0546KASTLE SECURITY SYSTEM MANAGEMENT SERVICES | Department of the Interior | $25.6K | Sep 29, 2026 | Sep 28, 2027 |
Upcoming positioning windows
Modeled recompete windows are estimates, not announced solicitations or guarantees.
Registration, certifications & contacts
| Registration evidence | Date |
|---|---|
| SAM updated | Aug 27, 2025 |
| Source loaded | Sep 26, 2026 |
| Initial registration | Nov 7, 2001 |
| Entity start | May 1, 1972 |
Registration classifications: Small Business. These are separate from the reported certificates above.
| Industry | Reported size status |
|---|---|
| 334220 — Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing | Not reported |
| 334290 — Other Communications Equipment Manufacturing | Not reported |
| 334512 — Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use | Not reported |
| 517122 — Agents for Wireless Telecommunications Services | Not reported |
| 561621 — Security Systems Services (except Locksmiths) | Not reported |
| Contact | Role | Published contact methods | Evidence | Source date |
|---|---|---|---|---|
| TOM O'DONNELL | Government business | Contact method not published | SAM registration | Not available |
| SETH GUNN | Alternate government business | Contact method not published | SAM registration | Not available |
| SETH GUNN | Electronic business | Contact method not published | SAM registration | Not available |
| ENSIGN KAUL | Alternate electronic business | Contact method not published | SAM registration | Not available |
Registered industries
- 334220 — Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing
- 334290 — Other Communications Equipment Manufacturing
- 334512 — Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use
- 517122 — Agents for Wireless Telecommunications Services
- 561621 — Security Systems Services (except Locksmiths)
Registered products and services
- N063 — Installation of Equipment: Alarm, Signal, and Security Detection Systems
Registration classifications and published certificates do not by themselves establish eligibility for a particular solicitation. View SAM source
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Data coverage and methodology
Sources: SAM.gov registration, USAspending awards and transactions, and linked supporting records. Prime contract obligations, IDV ceilings and assistance amounts are kept separate. Missing records are not zero activity. Company claims are labeled separately. Recompete signals are rule-based scores out of 100. Positioning windows are AcornBids estimates.
Disclosed relationships only. Missing records do not establish that a contractor has no partners. Ambiguous parent award identifiers are excluded.
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