# NAICS 561621 Security Systems Services: $2.3B, page 2

Updated November 6, 2026.

Incumbents: the largest recipients, 51 to 100 of 1,514, in the same order as page 1.

## The full list

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- [Federal contract awards under NAICS 561621 Security Systems Services (except Locksmiths)](https://specstream.ai/data/federal-awards/naics/561621-security-systems-services-except-locksmiths): 7,802 rows, fiscal years 2024 to 2027, from the USAspending.gov award archive of 2026-11-06; the 7,802 awards that name their recipient (the page total of 8,184 also counts awards to sole proprietorships and to entities that opted out, which no list holds), $158.02, or the new rows each week for $19 a month. Buy: https://specstream.ai/data/federal-awards/naics/561621-security-systems-services-except-locksmiths

SpecStream is the live web data engine for teams and agents. It reads every federal contract award on USAspending.gov and every open opportunity on SAM.gov, and this page is that reading. Ask for the awards in your niche and the winners, agencies, values and recompetes arrive in your sheet, CRM, Slack or agent as they are reported.

## Incumbents: the largest recipients, page 2

| Recipient | Business size | Awards | Obligated | Share |
| --- | --- | --- | --- | --- |
| [KASTLE SYSTEMS LLC](https://specstream.ai/data/federal-awards/recipient/kastle-systems-llc-qng6p3ykn7f6) | Small Business | 76 | $5.9 million | 0.3% |
| [MISCELLANEOUS FOREIGN AWARDEES](https://specstream.ai/data/federal-awards/recipient/miscellaneous-foreign-awardees-ln9pu5m2yzn5) | Other Than Small Business | 333 | $5.8 million | 0.3% |
| [AKTARIUS LLC](https://specstream.ai/data/federal-awards/recipient/aktarius-llc-ze98mpedjd37) | Small Business | 11 | $5.7 million | 0.2% |
| [FIRELAKE CONSTRUCTION INC](https://specstream.ai/data/federal-awards/recipient/firelake-construction-inc-vnkjemrca424) | Small Business | 27 | $5.7 million | 0.2% |
| [SYSTEMS NORTHWEST, LLC](https://specstream.ai/data/federal-awards/recipient/systems-northwest-llc-s8napyqxbqf8) | Small Business | 50 | $5.5 million | 0.2% |
| [TRILOGY SECURED SERVICES, L.L.C](https://specstream.ai/data/federal-awards/recipient/trilogy-secured-services-l-l-c-wdbjjal6lld1) | Small Business | 24 | $5.3 million | 0.2% |
| [SIGNET TECHNOLOGIES, INC.](https://specstream.ai/data/federal-awards/recipient/signet-technologies-inc-jhbxpmmaesy3) | Other Than Small Business | 45 | $5.3 million | 0.2% |
| [LBYD FEDERAL, LLC](https://specstream.ai/data/federal-awards/recipient/lbyd-federal-llc-vvphp99jqhf9) | Small Business | 1 | $5.3 million | 0.2% |
| [PROFESSIONALS HIR LLC](https://specstream.ai/data/federal-awards/recipient/professionals-hir-llc-rb1kq7lmclg8) | Small Business | 74 | $5.2 million | 0.2% |
| [SERNOTTI ELECTRICAL SERVICES LLC](https://specstream.ai/data/federal-awards/recipient/sernotti-electrical-services-llc-pnjmh9vkjgb7) | Small Business | 17 | $4.8 million | 0.2% |
| [COMMUNICATIONS RESOURCE INC](https://specstream.ai/data/federal-awards/recipient/communications-resource-inc-pulsqbsp58h5) | Small Business | 44 | $4.2 million | 0.2% |
| [GINISIS GROUP INC.](https://specstream.ai/data/federal-awards/recipient/ginisis-group-inc-fda6bfq2m7r1) | Small Business | 1 | $4 million | 0.2% |
| [MONACO ENTERPRISES, INC.](https://specstream.ai/data/federal-awards/recipient/monaco-enterprises-inc-ezgfn5wleey8) | Small Business | 39 | $4 million | 0.2% |
| [THE FIELDS GROUP, LLC](https://specstream.ai/data/federal-awards/recipient/the-fields-group-llc-zurywu7khk23) | Small Business | 5 | $4 million | 0.2% |
| [M3T CORPORATION](https://specstream.ai/data/federal-awards/recipient/m3t-corporation-nvn2dfek39k5) | Small Business | 74 | $3.9 million | 0.2% |
| [DIGITAL AIR CONTROL, INC.](https://specstream.ai/data/federal-awards/recipient/digital-air-control-inc-xjdarwm5l3n8) | Small Business | 4 | $3.9 million | 0.2% |
| [FIRELAKE CONSTRUCTION INC](https://specstream.ai/data/federal-awards/recipient/firelake-construction-inc-zyjjm9aq1ve6) | Small Business | 11 | $3.7 million | 0.2% |
| [ONERAIN INCORPORATED](https://specstream.ai/data/federal-awards/recipient/onerain-incorporated-esxkdg2ph655) | Small Business | 14 | $3.6 million | 0.2% |
| [F-CONCEPTS, INC.](https://specstream.ai/data/federal-awards/recipient/f-concepts-inc-j65njt31jmf8) | Small Business | 7 | $3.5 million | 0.1% |
| [JOHNSONDANFORTH, INC](https://specstream.ai/data/federal-awards/recipient/johnsondanforth-inc-tfc8l4uhke15) | Small Business | 5 | $3.5 million | 0.1% |
| [AES SYSTEMS INC](https://specstream.ai/data/federal-awards/recipient/aes-systems-inc-jlkpwjfx65z3) | Small Business | 38 | $3.4 million | 0.1% |
| [IDEMIA NATIONAL SECURITY SOLUTIONS LLC](https://specstream.ai/data/federal-awards/recipient/idemia-national-security-solutions-llc-kwrskbhan4k3) | Small Business | 1 | $3.3 million | 0.1% |
| [APPLIED SECURITY TECHNOLOGIES INC](https://specstream.ai/data/federal-awards/recipient/applied-security-technologies-inc-mp3ljjkdm785) | Small Business | 25 | $3.3 million | 0.1% |
| [LDIA HOLDINGS, LLC](https://specstream.ai/data/federal-awards/recipient/ldia-holdings-llc-hu9ll2z2v4j1) | Other Than Small Business | 28 | $3.3 million | 0.1% |
| [SHIELDS POINT LLC](https://specstream.ai/data/federal-awards/recipient/shields-point-llc-dljncs91ee46) | Small Business | 3 | $3.3 million | 0.1% |
| [OPTIMUM LOW VOLTAGE LLC](https://specstream.ai/data/federal-awards/recipient/optimum-low-voltage-llc-nxpmtax99yz7) | Small Business | 20 | $3.3 million | 0.1% |
| [FORTEM TECHNOLOGIES INC](https://specstream.ai/data/federal-awards/recipient/fortem-technologies-inc-xlrdqkzpx7n9) | Small Business | 3 | $3.1 million | 0.1% |
| [KR CONTRACTING INC](https://specstream.ai/data/federal-awards/recipient/kr-contracting-inc-zhecq3wetdt7) | Small Business | 1 | $3.1 million | 0.1% |
| [SECURITYHUNTER, INC.](https://specstream.ai/data/federal-awards/recipient/securityhunter-inc-ce4fvls87m41) | Other Than Small Business | 23 | $3.1 million | 0.1% |
| [CORELOGIX CONSULTING INC](https://specstream.ai/data/federal-awards/recipient/corelogix-consulting-inc-t9blmlvlnn56) | Small Business | 11 | $3 million | 0.1% |
| SESANTI LIMITED | Other Than Small Business | 1 | $2.9 million | 0.1% |
| [SECURITY2000 LLC](https://specstream.ai/data/federal-awards/recipient/security2000-llc-m7p8fv9pvv73) | Small Business | 43 | $2.9 million | 0.1% |
| [PUYENPA SERVICES, LLC](https://specstream.ai/data/federal-awards/recipient/puyenpa-services-llc-zcwug5m95nl6) | Small Business | 1 | $2.7 million | 0.1% |
| [INDYNE, INC.](https://specstream.ai/data/federal-awards/recipient/indyne-inc-k21bnjgb9us6) | Other Than Small Business | 5 | $2.7 million | 0.1% |
| [J2 ASSOCIATES, LLC](https://specstream.ai/data/federal-awards/recipient/j2-associates-llc-cr7ulkcu35n8) | Small Business | 27 | $2.7 million | 0.1% |
| [INTEGRITY PROTECTION SYSTEMS LLC](https://specstream.ai/data/federal-awards/recipient/integrity-protection-systems-llc-tfngbn9pl4k9) | Small Business | 15 | $2.6 million | 0.1% |
| [KCORP RELIANCE COMPANY, INC.](https://specstream.ai/data/federal-awards/recipient/kcorp-reliance-company-inc-cyd1ssrl8em8) | Small Business | 17 | $2.5 million | 0.1% |
| [SECSOL INC](https://specstream.ai/data/federal-awards/recipient/secsol-inc-c3fgb4gfaah1) | Small Business | 12 | $2.5 million | 0.1% |
| [RAPISCAN SYSTEMS INC](https://specstream.ai/data/federal-awards/recipient/rapiscan-systems-inc-ucddun6a6s17) | Other Than Small Business | 51 | $2.4 million | 0.1% |
| [CHENEGA SENTINEL 360, LLC](https://specstream.ai/data/federal-awards/recipient/chenega-sentinel-360-llc-j18tcmlmjlg1) | Small Business | 2 | $2.4 million | 0.1% |
| [T47 INTERNATIONAL, INC.](https://specstream.ai/data/federal-awards/recipient/t47-international-inc-jxgzblgba996) | Small Business | 2 | $2.4 million | 0.1% |
| [THE WHITESTONE GROUP, INC.](https://specstream.ai/data/federal-awards/recipient/the-whitestone-group-inc-v48ugc3js464) | Small Business | 1 | $2.4 million | 0.1% |
| [MA IMPIANTI S.R.L.](https://specstream.ai/data/federal-awards/recipient/ma-impianti-s-r-l-qa6ne3prgmj3) | Other Than Small Business | 3 | $2.3 million | 0.1% |
| [BOLD TECHNOLOGIES LTD.](https://specstream.ai/data/federal-awards/recipient/bold-technologies-ltd-enatk3e6hwh9) | Other Than Small Business | 2 | $2.3 million | 0.1% |
| [COACTINT LLC](https://specstream.ai/data/federal-awards/recipient/coactint-llc-tjw8kw6llfd9) | Small Business | 2 | $2.3 million | 0.1% |
| [AMERICAN ENGINEERING CORPORATION](https://specstream.ai/data/federal-awards/recipient/american-engineering-corporation-m336ev5k3yz3) | Other Than Small Business | 8 | $2.2 million | 0.1% |
| [TECH ELECTRONICS, INC](https://specstream.ai/data/federal-awards/recipient/tech-electronics-inc-c9jul1nnnqk3) | Other Than Small Business | 10 | $2.2 million | 0.1% |
| [CLEAR CLOUD SOLUTIONS INC.](https://specstream.ai/data/federal-awards/recipient/clear-cloud-solutions-inc-r74exx36une4) | Small Business | 8 | $2.2 million | 0.1% |
| [USMAX CORPORATION](https://specstream.ai/data/federal-awards/recipient/usmax-corporation-l1cetzz5gbg3) | Small Business | 9 | $2.1 million | 0.1% |
| [TACTICA SOLUTIONS LLC](https://specstream.ai/data/federal-awards/recipient/tactica-solutions-llc-mmvth79s6zb5) | Small Business | 1 | $2.1 million | 0.1% |

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Source: [USAspending.gov](https://www.usaspending.gov/download_center/award_data_archive). Public U.S. federal spending data (U.S. Department of the Treasury). Obligations are the contract actions dated in fiscal years 2024 to 2027 of the USAspending.gov award archive of 2026-11-06; a contract's total value is its current value as USAspending reports it, including earlier years. Recipients are matched on their SAM.gov UEI, never on the name, and are shown as the government prints them. Sole proprietorships and opted-out entities count in the totals and are not named.

Free to reuse with credit to SpecStream under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).