Ironwood Capital — Full Portfolio
124 tracked investments · listed companies and verified rows first
Action Environmental Services is a commercial waste hauler providing garbage collection, dumpster rental, recycling, and disposal services to businesses, construction firms, and institutions across New York City's five boroughs.
Circular EconomyCleantechLogistics & Supply ChainNew York City, US
Co-investorsSummer Street
American Roller manufactures heated and chill rollers for web processing applications requiring precise temperature control across paper, plastic, film, and other converting industries.
Advanced ManufacturingHardwareNew MaterialsShanghai, CN
Co-investorsDellin Investments
Blue Bell Mattress is a third-generation family-owned manufacturer of bedding products, producing mattresses under the King Koil and Wolf brands.
Advanced ManufacturingConsumerHartford, US
Certified Aviation Services (CAS) provides aircraft maintenance, repair, and overhaul (MRO) services, including third-party line maintenance across 15 US stations and a 24/7 worldwide AOG rapid-response team for emergency repairs and modifications.
Advanced ManufacturingMobility & Transportation
ECS provides air pollution and odor control systems, including system design, installation, maintenance, and retrofitting, for industrial and municipal customers.
Advanced ManufacturingCleantechClimate Tech
Espire Dental operates a network of dental clinics offering general, cosmetic, and specialty services such as implants, Invisalign, sedation dentistry, and pediatric care.
HealthtechGreenwood Village, US
Sarah Montgomery(Executive Officer)
H3 Manufacturing Group is an integrated contract manufacturer providing precision machining, laser cutting, sheet metal fabrication, welding, assembly, and surface finishing services.
Advanced ManufacturingHardwareNew Materials
Hobbs Bonded Fibers manufactures fiber and batting products, serving markets including automotive suppliers, home quilting, and the comfort/bedding industry.
Advanced ManufacturingNew Materials
ICM Controls manufactures electronic controls, line voltage monitoring devices, and surge protection products for OEM and aftermarket customers.
Advanced ManufacturingEnergyHardware
Interstate Waste Services (IWS) provides solid waste collection, hauling, transfer, recycling, and landfill/disposal services for commercial and municipal customers across the New York City boroughs, New Jersey, Pennsylvania, and lower New York State.
Circular EconomyCleantechEnergyLogistics & Supply ChainTeaneck, US
Mike DiBella(Founder & CEO)Jack Perko(Executive Officer)inBrian Giambagno(Executive Officer)inJamie Gollotto(President)inThomas Farinaro(Executive Vice President of Operations)Michael Kinnard(Chief Financial Officer)in
Co-investorsSummer StreetLittlejohn
IsoPlexis (now part of Bruker Cellular Analysis) provides single-cell functional profiling technology used to discover therapeutic antibodies, interrogate T cells for novel cell therapies, and accelerate cell line development.
BiotechDeep TechMedical DevicesNew Haven, US
Rong Fan(Director)Sean McKay(Executive Officer, Director)Sean Mackay(Executive Officer, Director)
BoardDaniel Wagner(Director)John Conley(Director)inGregory Ho(Director)
Co-investorsConnecticut InnovationsAlly Bridge GroupNorthpond VenturesSpring Mountain Capital
Le Sueur Incorporated supplies complex, pressure-tight aluminum castings and plastic injection molding components using permanent mold, sand casting, die casting, and precision machining processes.
Advanced ManufacturingHardwareNew MaterialsLe Sueur, US
Marine Equipment Solutions unites multiple established brands to offer comprehensive marine and heavy construction equipment solutions across North America, including specialized rentals, engineering, and fabrication services.
Advanced ManufacturingConstruction TechHardwareLogistics & Supply Chain
Co-investorsCenterGate
MicroPrecision manufactures precision machined parts for industrial customers, leveraging advanced technology and a stable workforce focused on consistent quality and long-term reliability.
Advanced ManufacturingHardwareDelavan, US
Mark SarderMaya SarderinJim Costelloin
Co-investorsMerit Capital Partners
Modifi Bio presents itself as a research-focused biopharmaceutical company developing medicines and vaccines.
BiotechHealthtechNew Haven, US
Ranjit Bindra(Director)inKingson Lin(Cofounder)inKevin L. Rakin(Executive Officer, Director)in
BoardLucas de Breed(Director)Kat Kayser-Bricker(Director)
Co-investorsConnecticut InnovationsHighCape CapitalPathway BioventuresAdvantage Capital PartnersBrightEdge
Nautilus Integrated Solutions (NIS) provides precision machined components, high-integrity castings, and assemblies for the U.S. submarine industrial base, military, nuclear, and commercial customers.
Advanced ManufacturingDefense TechHardware
Nova Talent operates a global talent network that identifies and connects high-potential professionals to facilitate career development and professional growth.
Future of WorkHR TechSocial
Co-investorsBY Venture PartnersDoha Tech AngelsKluz VenturesMoonstone Venture CapitalTalent Venture Group
SAFE Security provides a cyber risk management platform tailored to retailers, offering continuous visibility into cyber and third-party risk across e-commerce, physical stores, cloud environments, and vendors.
AI & Machine LearningCybersecurityEnterprise SoftwareRetail TechSaaS
Saket Modi(Founder & CEO)in
Co-investorsEight Roads VenturesAlliance of AngelsAvataar Venture PartnersJC2 VenturesMS&AD VenturesNextEquity Partners+4 more
The Learning Experience operates early childhood education and daycare centers offering age-based programs from infant care through full-day kindergarten, built around its proprietary L.E.A.P. curriculum.
ConsumerEdTech
Co-investorsNorwest Venture Partners
A company providing sustainable waste and recycling services.
Circular EconomyCleantechJericho, US
Kevin J. McEnery(Executive Officer)William W. Gay(Executive Officer, Director)in
BoardMatthew Carbone(Director)Gilbert Palter(Director)George McCown(Director)Charles Ungurean(Director)
Co-investorsW Capital PartnersMacquarie Capital
XLerant develops budgeting and financial planning software for enterprise customers.
Cloud ComputingEnterprise SoftwareFintechSaaSStamford, US
Charles Pevsner(Co-founder & Chief Technology Officer)inBrunn Joanne(Ms. Brunn is the Chief Executive Officer of the Issuer.)Joanne E. Brunn(Chief Executive Officer)in
BoardWright Steenrod(Director)inJames Perakis(Executive Officer, Director)Dacko Theodore(Director)
Co-investorsChrysalis VenturesConnecticut Innovations
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
ACCT HoldingActive Thermal SolutionsAdvanced Concrete SystemsAdvanced Recycling SystemsAGS ConstructionAl’s HoldingAlarm Capital AllianceALCOMAmerican Blanching CompanyAmerican HighwayAnywhere CartArtisan BakeryBehold HomeBel-Ray CompanyBoston Carting ServicesBrandFX Body CompanyBrigham's HoldingsBush IndustriesCaldera Manufacturing GroupCapewell Aerial SystemsCinterraCity CartingConsulting Solutions InternationalCox Transportation ServicesCurtis Bay EnergyDelStar TechnologiesDenali Water SolutionsDiamond PackagingDiverse Logistics HoldingsDocuLynxDSI LogisticsDynamic GunverEagle Bridge MachineEDEX MachiningElite Equipment RentalElite One Source Nutritional ServicesFiber-LineFlow Dry TechnologyGenesis SolutionsGlobal ConvenienceGold Medal ServicesGroome Industrial HoldingsHickory HoldingsHillsdale FurnitureIndustrial TimberiPacesettersIronmarkIronwave TechnologiesJohn To GoJoliet Electric MotorsKatahdin IndustriesLakeshore Recycling SystemsLewis Clark Recycling & DisposalLibra IndustriesLiquidHubMEDportMemry CorporationMeridian BrandsMid-West TextileMomentum Manufacturing GroupMorgan ContractingMy Alarm CenterNEBCNew England LinenNew York Merchants Protective CompanyNewbury Franklin IndustrialsNext Generation Vending & Food ServiceNorth American Specialty GlassNovaTract SurgicalNumet Machining TechniquesOak Ridge Waste & RecyclingPage Publishing ConsortiumParadigm WindowsPeltram PlumbingPerformance TeamPete & PetePharmaceutic Litho & Labeling CompanyPinnacle Contracting ServicesPPI Time ZeroPraxis IndustriesPremier FixturesPrimary SteelPro DisposalProfessional Rental ToolsRed River Waste SolutionsRipley ToolsRoberts CompanyRohner Finishing SystemsSimonds InternationalSouthern DesignSt. George WarehouseStandard IronTAS MessagingThe Facilities GroupTidewater Equipment CompanyTiro IndustriesTOG Manufacturing CompanyTracked LiftsTulip Molded PlasticsUniloyVerdi CommerceVLS Recovery ServicesWhitcraft
Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.































