HEPBURN AND SONS LLC

Manassas, VA · Defense · Private

Machine learning-based ground fault detection and localization system for Navy shipboard 440VAC power distribution using noise pattern analysis

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Updated Oct 23, 2026 · hepburnandsons.com

Sector: Defense
Headquarters: Manassas, VA
Total capital: $21.4M

Federal grants: $5.7M; 13 awards · 2018–2025; Rank in peer group#36 of 94
Private capital raised: None on recordNo Form D filings on SEC EDGAR. Some raises are not filed.
Federal contracts: $15.7M; 26 awards · Defense; Rank in Defense#311 of 1442
Granted patents: None on recordNo USPTO grants. Applications publish after 18 months.

Capital timeline

Latest events

Dec 2025Federal contractDefense · Scalable Homeland Innovative Enterprise Layered Defense (shield) Initial Order.$500
Sep 2025Federal grantDefense · Phase I · Predictive Methodology For Tamped Direct Laser Impulse Parameter Optimization - SBIR Phase I Proposal No. T243-0004-0161$200K
Sep 2025Federal contractDefense · Predictive Methodology For Tamped Direct Laser Impulse Parameter Optimization - SBIR Phase I Proposal No. T243-0004-0161$200K
Jun 2025Federal grantDefense · Phase I · Research And Development Services In Accordance With The Contractor's Phase I Proposal Entitled Mvdc Protective Relay System With Shipboard Power System Zone Distinction Dated 04 February 2025 In Response To SBIR Topic Number N25A-T012$140K
Jun 2025Federal contractDefense · Research And Development Services In Accordance With The Contractor's Phase I Proposal Entitled Mvdc Protective Relay System With Shipboard Power System Zone Distinction Dated 04 February 2025 In Response To SBIR Topic Number N25A-T012$140K
May 2025Federal grantDefense · Phase I · Kickoff Briefing$140K
May 2025Federal contractDefense · Kickoff Briefing$140K

Show 32 earlier federal awards

Oct 2024Federal grantDefense · Phase II · BASE$642K
Oct 2024Federal contractDefense · BASE$1.3M
Sep 2024Federal contractDefense · Small Business Innovation Research Phase I Proposal F242-0001-0106 - Digital Engineering Applied To The Boeing B-52H Stratofortress For Integration Risk Reduction$180K
Sep 2024Federal grantDefense · Phase I · Small Business Innovation Research Phase I Proposal F242-0001-0106 - Digital Engineering Applied To The Boeing B-52H Stratofortress For Integration Risk Reduction$180K
Sep 2024Federal contractDefense · Small Business Innovation Research Direct To Phase II Proposal F2D-13693 - In-situ Solid State Repair Of Damaged Aircraft Structures Utilizing Impact Welding Technologies$1.8M
Aug 2024Federal grantDefense · Phase II · Small Business Innovation Research Direct To Phase II Proposal F2D-13693 - In-situ Solid State Repair Of Damaged Aircraft Structures Utilizing Impact Welding Technologies$1.8M
Jul 2024Federal contractDefense · SBIR Phase I$140K
Jul 2024Federal contractDefense · Research And Development.$140K
Jul 2024Federal grantDefense · Phase I · Research And Development.$140K
Jul 2024Federal grantDefense · Phase I · SBIR Phase I$140K
Oct 2023Federal contractDefense · Analysis Of Meld Additive Friction Stir Deposition Applications To Improve The Production Of Low-cost Attritable Uavs$750K
May 2023Federal contractDefense · SBIR Phase II.$1.7M
Apr 2023Federal grantDefense · Phase II · Ground Fault Detection System$600K
Apr 2023Federal contractDefense · STTR Phase II.$1.7M
Aug 2022Federal contractDefense · SBIR Phase I.$240K
Jul 2022Federal grantDefense · Phase II · Hatchable Solid State Transformer Rectifier Design through System Co-Optimization$800K
Jul 2022Federal contractDefense · Research And Development$1.1M
Mar 2022Federal grantDefense · Phase I · Analysis of MELD Additive Friction Stir Deposition Applications to Improve the Production of Low-Cost Attritable UAVs$50K
Nov 2021Federal contractDefense · Research And Development$1.6M
Sep 2021Federal contractDefense · STTR Ph I$240K
Jul 2021Federal contractDefense · STTR Phase I.$239K
Jul 2021Federal contractDefense · Research And Development.$240K
Jul 2020Federal grantDefense · Phase I · Electrical Hull Penetrator Connectors for Directed Energy Weapon Systems$140K
Jun 2020Federal contractDefense · Kickoff Briefing Materials$240K
Feb 2020Federal contractDefense · Research And Development$1.6M
Jan 2019Federal contractDefense · Seaport Nxg Minimum Obligation Task Order$500
Sep 2018Federal contractDefense · Research And Development Igf::ot::igf$225K
Sep 2018Federal grantDefense · Phase II · High Altitude Electromagnetic Pulse (HEMP) Protection for Nuclear Command and Control Communications (NC3) Systems$750K
Feb 2018Federal contractDefense · Research And Development Igf::ot::igf$1.5M
Jun 2017Federal contractDefense · Igf::ot::igf High Altitude Electromagnetic Pulse (hemp) Protection For Nuclear Command And Control$150K
Jun 2016Federal contractDefense · Igf::ot::igf Seaport Enhanced$3K
Jun 2016Federal contractDefense · Igf::ot::igf N16A-012-0056$149K

Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.

Standing among 94 peers

Line = median

Defense · System

Federal grants#36 · top 38%

Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.

Founders and team

No founders are linked to this company yet.

Founders appear once a person is matched to the company through its own patents, grants or filings. We never infer people from social profiles.

Checked: USPTO inventors; federal award principal investigators; SEC Form D related persons · Oct 23, 2026

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What it has protected

No granted patents are on record.

USPTO usually publishes applications 18 months after filing, so recent applications may not be visible yet. Patents assigned under a different entity name won’t match.

Checked: USPTO granted patents and published applications · Oct 23, 2026

WEB SENSING, LLCSimilar federal contract value in Defense · $15.8M in contracts
RELOGIC RESEARCH, INC.Similar federal contract value in Defense · $15.8M in contracts
SIVANANTHAN LABORATORIES, INC.Similar federal contract value in Defense · $15.7M in contracts
CROSSFIELD TECHNOLOGY LLCSimilar federal contract value in Defense · $15.6M in contracts
ART ANDERSON ASSOCIATES INCSimilar federal contract value in Defense · $15.6M in contracts
INNOVATIVE TECHNOLOGY INCSimilar federal contract value in Defense · $15.5M in contracts

Regulatory activity · Defense

Sector-level, not company-level

11 Jun 2026Danger Zone; Waters of Carr Creek and Whitehall Bay in the Vicinity of the Naval Support Activity AnnapolisEngineers Corps
13 Mar 2026Federal Acquisition Regulation; Federal Acquisition Circular 2026-01; IntroductionNational Aeronautics and Space Administration
13 Mar 2026Federal Acquisition Regulation: Trade Agreements ThresholdsNational Aeronautics and Space Administration
13 Mar 2026Federal Acquisition Regulation; Federal Acquisition Circular 2026-01; Small Entity Compliance GuideNational Aeronautics and Space Administration
27 Aug 2025Federal Acquisition Regulation; Federal Acquisition Circular 2025-06; Small Entity Compliance GuideNational Aeronautics and Space Administration
27 Aug 2025Federal Acquisition Regulation; Federal Acquisition Circular 2025-06; IntroductionNational Aeronautics and Space Administration

Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.

Sources

Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.

How to read this page

Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.

Data freshness

SEC Form D filings through Oct 23, 2026. SBIR and STTR awards through Oct 21, 2026.