Summer Street
Private equityOrchard Park Β· Growth
Also known as Summer Street Capital Partners, Llc
Investment thesis
Summer Street invests equity capital alongside committed leaders, ensuring key managers hold meaningful equity stakes in the business. Its capital typically supports buyout transactions, growth financing, recapitalizations, family transitions, and corporate divestitures. Beyond capital, the firm positions itself as a hands-on partner, offering operational resources such as organizational development, customer satisfaction improvement, lean manufacturing, and executive coaching. Portfolio companies also gain access to the firm's networks of industry experts, thought leaders, talent recruiters, and potential target customers, helping them pursue ambitious growth goals across the United States and Canada.
Source: firm website, verified Aug 25, 2026.
What they invest in
from 16 of 20 portfolio companiesAdvanced Manufacturing Γ8Circular Economy Γ7Hardware Γ7Cleantech Γ6Logistics & Supply Chain Γ3Consumer Γ2Energy Γ2Healthtech Γ2
HQs:United StatesΓ11
Investments Β· 20 tracked
founders shown can be your intro pathInterstate 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
Jack Perko(Executive Officer)Brian Giambagno(Executive Officer)Michael DiBella(Founder & Chief Executive Officer)Ronald Bergamini(Executive Officer)Ross Gatlin(Director)Marc Sulam(Director)
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
Apple Valley Waste provides residential, commercial, and construction waste management services, including trash pickup, garbage disposal, recycling, and roll-off dumpster rentals.
Circular EconomyCleantech
Carolina Skiff manufactures U.S.-made fishing and day-cruising boats designed for shallow inshore and deeper offshore waters.
Advanced ManufacturingConsumerHardware
Coastal Waste provides solid waste collection, disposal, and recycling services for homeowners, haulers, and developers.
Circular EconomyCleantech
Brendon Pantano(Founder & CEO)
Provider of regulatory compliant medical waste transportation, disposal, and consulting services to healthcare providers.
Provides medical waste disposal services and products, including containers for sharps, regulated medical waste, universal waste, and unused medications, plus mail-back kits.
Circular EconomyHealthtech
Co-investorsGraycliff Partners
Frontier Waste Solutions is a licensed non-hazardous solid waste and recycling collection company offering residential and commercial garbage pickup, dumpster rentals, industrial roll-off containers, and municipal contract services.
Circular EconomyCleantechLogistics & Supply Chain
Graphic Controls manufactures industrial monitoring supplies including circular, strip, and rectangular recording charts, chart recorders, recorder parts, well logging printer supplies, thermal transfer ribbons, labels, parking tickets, and thermal medical wristbands.
Advanced ManufacturingHardwareNew Materials
Halco Lighting Technologies supplies lamps, luminaires, and fixtures for residential, commercial, and industrial spaces, including LED downlights, troffers, flat panels, wall packs, and exit signs.
Advanced ManufacturingEnergyHardware
Innovative manufacturer of high-quality coin-operated games.
Latham designs and manufactures inground swimming pools, including fiberglass and vinyl liner pools, along with automatic safety covers, spas, and replacement liners for residential backyard installations.
Advanced ManufacturingConsumerHardware
Oak Ridge Waste & Recycling provides commercial waste services, residential garbage pickup, rolloff dumpster rental, and transfer station services to residents and businesses.
Circular EconomyCleantech
Praxis Companies manufactures acrylic and fiberglass bathtub and shower units for residential, assisted living, designer showroom, and commercial markets.
Advanced ManufacturingConstruction Tech
Fund performance Β· per public LP disclosures Β· 3
as of Mar 2025| Fund | Vintage | Committed | Net IRR | TVPI | DPI |
|---|---|---|---|---|---|
| Summer Street Capital III, LPLPs: Empire State Development β New York Ventures | 2012 | β | β | 1.49x | 1.41x |
| Summer Street Capital NYS Fund III, LPLPs: Empire State Development β New York Ventures | 2012 | β | β | 2.23x | 2.22x |
| Summer Street Capital NYS Fund II, LPLPs: Empire State Development β New York Ventures | 2006 | β | β | 0.66x | 0.65x |
Source: public limited-partner disclosures (CalPERS, CalSTRS). Net IRR / TVPI / DPI as reported by the limited partner; a fund's early-year IRR is an interim estimate (J-curve).
Frequently asked questions
- How many investments has Summer Street made?
- Summer Street has 20 tracked investments.
- What stage does Summer Street invest at?
- Summer Street invests at the Growth stage.
- What sectors does Summer Street focus on?
- Summer Street focuses on Advanced Manufacturing, Circular Economy.
- Where is Summer Street located?
- Summer Street is headquartered in Orchard Park, US.
- Does Summer Street lead rounds?
- Yes, Summer Street leads investment rounds.
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