HSG, LLC (FL)
Registration and award facts
SAM.gov registration as of
- Net obligations since FY2010
- $259.94M
- $259,941,800under this UEI
- FY2026 obligations
- $66.03M†
- $66,033,425Provisional
- Awards and orders
- 243
- with positive net obligations13 IDV vehicles held
- Latest action
- Oct 11, 2026
- SAM.gov registration
- Active
- Registration expiration date Apr 9, 2027
Registration
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Business start date
- Apr 22, 2008 (18 years)
- Location
- Merritt Island, FL
- State of incorporation
- Nevada
- Purpose of registration
- All Awards
- Website
- herndon-group.com
† FY2026 obligations (provisional; DoD awards signed after Jul 26, 2026 are not yet public).
Contract actions that the Department of Defense both funds and awards are withheld at the source for 90 days, so DoD awards signed after Jul 26, 2026 are not yet public.
Source: SAM.gov entity registration and FPDS contract actions recorded under UEI W9SABN4VVAG4. GovChime does not check exclusions.
Performance
Net obligations recorded under this UEI since FY2010. Top lists show the largest five by share of this vendor's net obligations; the shares do not sum to 100%.
Net obligations by fiscal year of action
- FY2026: $66,033,425 (provisional)
- FY2025: $46,027,244
- FY2024: $33,451,738
- FY2023: $29,193,944
- FY2022: $28,498,457
- FY2021: $26,548,444
- FY2020: $14,199,902
- FY2019: $4,450,568
Show all 17 yearsEarlier years (FY2010–FY2018)
- FY2018: $2,032,310
- FY2017: $3,603,986
- FY2016: $980,832
- FY2015: $1,157,589
- FY2014: $455,400
- FY2013: $822,428
- FY2012: $1,236,117
- FY2011: $540,662
- FY2010: $708,753
Total across 17 fiscal years: $259,941,800
Top awarding agencies
- National Aeronautics and Space Administration$235,816,831, 90.7%
- Department of the Interior$9,684,627, 3.7%
- Department of Defense$7,725,727, 3.0%
- Environmental Protection Agency$6,065,096, 2.3%
- Department of Agriculture$369,242, 0.1%
Top awarding sub-agencies
- National Aeronautics and Space Administration$235,816,831, 90.7%
- Bureau of Land Management$6,770,305, 2.6%
- Department of the Air Force$6,750,533, 2.6%
- Environmental Protection Agency$6,065,096, 2.3%
- Bureau of Reclamation$1,098,509, 0.4%
Top NAICS by obligations
- 541620Environmental consulting services$245,490,167, 94.4%
- 621999All other miscellaneous ambulatory health care services$7,711,498, 3.0%
- 519120Libraries and archives$6,065,096, 2.3%
- 541511Custom computer programming services$649,510, 0.2%
- 541690Other scientific and technical consulting services$25,029, <0.1%
Top product and service codes by obligations
- R408Support- professional: program management/support$218,559,743, 84.1%
- F099Natural resources/conservation- other$9,654,834, 3.7%
- Q999Medical- other$7,711,498, 3.0%
- F999Other environmental services$6,944,323, 2.7%
- Q201Medical- general health care$6,750,533, 2.6%
Capabilities
NAICS codes
- 541620Environmental Consulting Services(primary)
- 541519Information Technology Value Added Resellers18
- 561210Facilities Support Services
- 621111Offices of Physicians (except Mental Health Specialists)
- 541618Other Management Consulting Services
- 541715Guided Missiles and Space Vehicles, Their Propulsion Units and Propulsion PartsSmall
Show all 34 NAICS codes28 more NAICS codes
- 541330Marine Engineering and Naval ArchitectureSmall
- 541990All Other Professional, Scientific, and Technical Services
- 541370Surveying and Mapping (except Geophysical) Services
- 541110Offices of Lawyers
- 621999All Other Miscellaneous Ambulatory Health Care Services
- 713990All Other Amusement and Recreation Industries
- 611430Professional and Management Development Training
- 713940Fitness and Recreational Sports Centers
- 621112Offices of Physicians, Mental Health Specialists
- 561990All Other Support Services
- 115310Forest Fire Suppression1Small
- 541614Process, Physical Distribution and Logistics Consulting Services
- 541350Building Inspection Services
- 541611Administrative Management and General Management Consulting Services
- 624230Emergency and Other Relief Services
- 624190Other Individual and Family Services
- 812990All Other Personal Services
- 541512Computer Systems Design ServicesSmall
- 621498All Other Outpatient Care Centers
- 622110General Medical and Surgical HospitalsSmall
- 621399Offices of All Other Miscellaneous Health Practitioners
- 621330Offices of Mental Health Practitioners (except Physicians)
- 611620Sports and Recreation Instruction
- 621340Offices of Physical, Occupational and Speech Therapists, and Audiologists
- 562910Remediation Services
- 541310Architectural Services
- 541380Testing Laboratories and Services
- 541690Other Scientific and Technical Consulting Services
Small: small business for that NAICS, self-certified in SAM.gov registration.
SBA certifications
No certification in the SBA profile data.
Business types self-reported in SAM.gov registration:
- Women-Owned Business
- Women-Owned Small Business
Federal Capability Statement
HSG was founded in 2008 to provide environmental services, emergency response planning, and sustainability management. Through a plan of steady growth, HSG has expanded its core services to include occupational and environmental health, fitness, injury rehabilitation, and employee assistance programs. We provide innovative services and solutions, tailored specifically to our customers' needs, while minimizing organizational risks.
Capabilities & Services
Contracts
Latest awards and orders
- GS10F230BAFederal supply schedule (FSS)VehicleGeneral Services AdministrationFederal Acquisition ServiceLatest action
- 80KSC020D0023Indefinite delivery contract (IDC)VehicleNational Aeronautics and Space AdministrationLatest action
- 80GSFC24F0034Delivery orderunder an indefinite delivery contract (IDC)National Aeronautics and Space AdministrationLatest action
- 80GSFC26F7017Delivery orderunder an indefinite delivery contract (IDC)National Aeronautics and Space AdministrationLatest action
- 80SSC026F7003Delivery orderunder an indefinite delivery contract (IDC)National Aeronautics and Space AdministrationLatest action
- 80MSFC24F0118Delivery orderunder an indefinite delivery contract (IDC)National Aeronautics and Space AdministrationLatest action
- 140D0426F1054Delivery orderunder a federal supply schedule (FSS)Department of the InteriorDepartmental OfficesLatest action
- 80KSC026F7025Delivery orderunder an indefinite delivery contract (IDC)National Aeronautics and Space AdministrationLatest action
- 80GRC018C0054Definitive contractNational Aeronautics and Space AdministrationLatest action
- HQ085926DF292Indefinite delivery contract (IDC)VehicleDepartment of DefenseMissile Defense AgencyLatest action
Contact Info
As of . Source: SAM.gov Points of Contact.
SAM.gov registration for HSG, LLC lists a physical address and a separate mailing address, along with 3 verified points of contact. Past Performance contacts are the recommended outreach channel for due-diligence references; Government Business contacts handle procurement-facing correspondence.
Source: SAM.gov entity registration. Contacts displaying numeric or placeholder names have been filtered (defense-in-depth).
Physical Address
1353 N Courtenay Pkwy Ste Y
Merritt Island, FL, 32953
USA
Mailing Address
1353 N Courtenay Pkwy Ste Y
Merritt Island, FL, 32953
USA
Government Business Contact
Tonya Sitko
CEO
1353 N. Courtenay Pkwy, Suite Y
Merritt Island, FL, 32953
USA
Electronic Business Contact
Tonya Sitko
CEO
1353 N. Courtenay Pkwy, Suite Y
Merritt Island, FL, 32953
USA
Past Performance Contact
Emily Dabashinsky
1353 N. Courtenay Pkwy, Suite Y
Merritt Island, FL, 32953
USA
Additional Details
As of . Source: SAM.gov Entity Registration.
HSG, LLC has no active federal suspension or debarment on record in SAM.gov. Current SAM.gov registration expires April 9, 2027.
Source: SAM.gov entity registration (FAR responses, registration status). Always verify active exclusions against the authoritative record on SAM.gov before contract award.
Compliance & Risk Assessment
Source: SAM.gov FAR responsesSuspension/Debarment Status
SAM.gov registration reports no active exclusion
Public Display
Entity information is publicly displayed
Disaster Relief Registry
Registered for disaster relief contracting
Bonding Information
No bonding information provided
EDI
Not declared in SAM.gov
Business Structure
Source: SAM.govRegistration Details
Source: SAM.govInitial Registration
Last Update
Registration Activation
Fiscal Year End
Country of Incorporation
Congressional District
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- Applied Ecology Inc.Melbourne, FL
- Water & Air Research, Inc.Gainesville, FL