GREENSEA SYSTEMS, INC.

Richmond, VT · Defense · Acquired (2023)

Coupled control software module for subsea ROV and manipulator systems in explosive ordnance disposal operations

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Updated Oct 23, 2026 · greenseainc.com

Sector: Defense
Headquarters: Richmond, VT
Latest Form D: $18.5M, Jun 2025
Total capital: $48.2M

Federal grants: $5.7M; 7 awards · 2019–2025; Rank in peer group#69 of 161
Private capital raised: $18.5M; 1 Form D · last Jun 2025; 16 months since last filing
Federal contracts: $24M; 20 awards · Defense, Interior; Rank in Defense#242 of 1442
Granted patents: 1; 3 pending · first 2021; Rank in peer group#44 of 161

Capital timeline

Latest events

Jul 2026Federal contractDefense · Bayonet Underwater Controllers And Kits$291K
May 2026Federal contractDefense · Issue A Delivery Order Against Clin 1001 For 4 Augvs And Against Clin 1002 For 2 Iips, Totaling $3,743,810.10 Per The Terms Of The Base Contract.$3.7M
Aug 2025Federal contractDefense · Amphibious Unmanned Ground Vehicle (augv)$9M
Jul 2025Federal grantDefense · Phase II · BASE$2M
Jul 2025Federal contractDefense · BASE$2M
Jun 2025Private capital raisedForm D · SEC · 1st filing$18.5M
Jun 2025Federal grantDefense · Phase I · Kickoff Briefing$140K

Show 21 earlier federal awards

Jun 2025Federal contractDefense · Kickoff Briefing$140K
May 2025Federal grantDefense · Phase II · Base Award For SBIR Phase II Topic No. N234-P05$676K
May 2025Federal contractDefense · Base Award For SBIR Phase II Topic No. N234-P05$1.4M
Aug 2024Federal grantDefense · Phase II · BASE$715K
Aug 2024Federal contractDefense · BASE$1.4M
Jul 2024Federal contractDefense · Eod Workspace Simulator Hardware- Base$38K
Mar 2024Federal grantDefense · Phase I · Kickoff Briefing$75K
Mar 2024Federal contractDefense · Kickoff Briefing$175K
Aug 2023Federal contractDefense · Crawler Motor Upgrades$72K
Aug 2021Federal grantDefense · Phase I · Coupled Control of Expeditionary Remote Operating Vehicles (ROV) and Manipulator Payloads$140K
Oct 2020Federal contractDefense · Research And Development$1.7M
Aug 2019Federal grantDefense · Phase II · Autonomous Hull Grooming Vehicle$2M
Aug 2019Federal contractDefense · Research And Development$2M
Jul 2019Federal contractDefense · Progress Report$232K
Jun 2018Federal contractDefense · Igf::ot::igf$221K
Dec 2015Federal contractDefense · Igf::ot::igf Navigational Underwater Equipement For Research$34K
May 2015Federal contractInterior · Igf::ot::igf Feature Based Localization And Navigation For Miniature Underwater Vehicles$1.4M
Sep 2014Federal contractDefense · Installation And Configuration Of Opencmd Software Into A Seabotix VLBV300$8K
May 2014Federal contractInterior · Igf::ot::igf Feature Based Localization And Navigation For Miniature Underwater Vehicles$134K
Aug 2013Federal contractDefense · Commodities Purchase Or Ins System For Unmanned Underwater Reserach$39K
Jun 2010Federal contractDefense · Software$18K

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.

Federal first

180months

from GREENSEA SYSTEMS, INC.’s first federal award to its first private round.

First federal award · Jun 2010: Defense · $18K
First Form D · Jun 2025: $18.5M · 1st Form D
Awards before first raise: 22 awards

An association in public records, not a cause or a prediction.

Standing among 161 peers

Line = median

Defense · Software

Federal grants#69 · top 43%
Granted patents#44 · top 27%

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

Researcher links verified by same-company patents and grants

Benjamin KinnamanResearcherExecutive Officer, DirectorLinked by 1 patent
James H Crook, Jr.DirectorNamed in SEC Form D filings
John H BroadmeadowDirectorNamed in SEC Form D filings
John A KaneDirectorNamed in SEC Form D filings
Michele H AschDirectorNamed in SEC Form D filings
Michelle H AschDirectorNamed in SEC Form D filings

What it has protected

USPTO · 1 granted of 4

Oct 17, 2024PendingApparatuses, Methods, and Systems for Supervising Remotely Operated Vehicles Over Sparse DatalinksUSPTOApplication 18517687
Dec 7, 2021GrantedAutonomous Merit-Based Heading Alignment and Initialization Methods for Inertial Navigation Systems, and Apparatuses and Software Incorporating SameUSPTOUS 11,193,772
PendingMethods and Systems for Supervising Remotely Operated Vehicles Over Sparse DatalinksUSPTOApplication 63427566

Show all 4 patent records

Apparatuses, Methods, and Systems for Supervising Remotely Operated Vehicles Over Sparse DatalinksOct 17, 2024 · Application 18517687Pending
Autonomous Merit-Based Heading Alignment and Initialization Methods for Inertial Navigation Systems, and Apparatuses and Software Incorporating SameDec 7, 2021 · US 11,193,772Granted
Methods and Systems for Supervising Remotely Operated Vehicles Over Sparse DatalinksApplication 63427566Pending
Autonomous Merit-Based Heading Alignment and Initialization Method for Inertial Navigation SystemsApplication 62640923Pending

LONGSHORTWAY INC.Similar federal contract value in Defense · $24.2M in contracts
Reservoir Labs, Inc.Similar federal contract value in Defense · $24M in contracts
INNOSYS, INC.Similar federal contract value in Defense · $24M in contracts
INTELLIGENT FUSION TECHNOLOGY, INC.Similar federal contract value in Defense · $23.7M in contracts
TURNAROUND FACTOR, INC.Similar federal contract value in Defense · $23.6M in contracts
HY-TEK MANUFACTURING CO., INC.Similar federal contract value in Defense · $23.1M 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.