Investment Summary

Mangrove Equity Partners and Kilroy Partners Exits Seaside Waste Services

On August 6, 2025, Interstate Waste Services invested in environmental company Seaside Waste Services from Mangrove Equity Partners and Kilroy Partners

Investment Highlights
  • This is Interstate Waste Services’ 7th transaction in the Environmental sector.
  • This is Interstate Waste Services’ 7th transaction in the United States.
  • This is Interstate Waste Services’ 5th transaction in New Jersey.

Investment Summary

Date 2025-08-06
Target Seaside Waste Services
Sector Environmental
Investor(s) Interstate Waste Services
Sellers(s) Mangrove Equity Partners
Kilroy Partners
Deal Type Add-on Acquisition

Target

Seaside Waste Services

Hammonton, New Jersey, United States
Seaside Waste Services is a provider of non-hazardous solid waste and recycling collection throughout central and southern New Jersey. Seaside services over 2,000 commercial customers and over a dozen municipalities. The company also offers dumpster rentals and roll-away services to both commercial and residential customers. Seaside Waste Services was founded in 1971 and is based in Hammonton, New Jersey.

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Investor(S) 1

Investor

Interstate Waste Services

Teaneck, New Jersey, United States

Category Company
Founded 1991
Sector Environmental
DESCRIPTION

Interstate Waste Services is a provider of solid waste collection, transfer, recycling, and disposal services serving. Interstate Waste Services was founded in 1991 and is based in Teaneck, New Jersey.


DEAL STATS #
Overall 7 of 11
Sector: Environmental M&A 7 of 11
Type: Add-on Acquisition M&A Deals 7 of 11
State: New Jersey M&A 5 of 6
Country: United States M&A 7 of 11
Year: 2025 M&A 2 of 6
PREVIOUS DEAL
DATE TARGET DEAL TYPE VALUE
2025-03-19 Pinto Service

Lodi, New Jersey, United States

Pinto Service is a full-service waste management company. Pinto Service was founded in 1951 and is based in Lodi New Jersey.

Buy -
FOLLOWING DEAL
DATE TARGET DEAL TYPE VALUE
2025-09-22 North Atlantic Waste & Recycling

North Haven, Connecticut, United States

North Atlantic Waste & Recycling offers comprehensive solid waste collection, disposal, and recycling services to residential, commercial, and industrial customers. North Atlantic Waste & Recycling was founded in 1999 and is based in North Haven, Connecticut.

Buy -

Seller(S) 2

SELLER

Mangrove Equity Partners

Tampa, Florida, United States

Investor Investor Investor Investor Investor


Category Private Equity Firm
Founded 2007
Size Small
Type Sector Agnostic
DESCRIPTION

Mangrove Equity Partners is a lower-middle market private equity firm focused on investing in North American businesses valued from $15 to $75 million. Mangrove generally targets companies operating in basic industries with defensible market positions and solid growth prospects. Sectors of interest include services, manufacturing, and value-added distribution. Prospective businesses typically have revenues up to $100 million and are profitable with at least $2 million of cash-flow. Target transaction types include management buyouts/buy-ins, recapitalizations, industry, consolidations, family successions, and select turnarounds. Mangrove Equity Partners is based in Tampa, Florida.


DEAL STATS #
Overall 14 of 15
Sector: Environmental M&A 1 of 1
Type: Add-on Acquisition M&A Deals 12 of 12
State: New Jersey M&A 2 of 2
Country: United States M&A 13 of 14
Year: 2025 M&A 1 of 2
PREVIOUS DEAL
DATE TARGET DEAL TYPE VALUE
2024-11-18 Griffin Gear

Roebuck, South Carolina, United States

Griffin Gear specializes in the manufacture of replacement gearing and provides gearbox rebuilds for any conceivable industrial application. Griffin Gear was founded in 1967 and is based in Roebuck, South Carolina.

Buy -
FOLLOWING DEAL
DATE TARGET DEAL TYPE VALUE
2025-10-16 Vintage Air

San Antonio, Texas, United States

Vintage Air is a specialty manufacturer of performance aftermarket air conditioning systems for classic and late-model cars and trucks. Vintage Air was founded in 1976 and is based in San Antonio, Texas.

Sell -
DESCRIPTION

Kilroy Partners is a private investment firm focused on investing in lower middle-market, family-owned businesses, corporate divestitures, and other non-performing or challenged companies. The Firm will consider opportunities throughout North America valued up to $75 million. Sectors of interest include aerospace, defense, niche manufacturing, food, and transportation. Kilroy Partners was formed in 2014 and is headquartered in Boca Raton, Florida.


DEAL STATS #
Overall 2 of 2
Sector: Environmental M&A 1 of 1
Type: Add-on Acquisition M&A Deals 2 of 2
State: New Jersey M&A 1 of 1
Country: United States M&A 2 of 2
Year: 2025 M&A 1 of 1
PREVIOUS DEAL
DATE TARGET DEAL TYPE VALUE
2023-12-06 Iowa Northern Railway

Waterloo, Iowa, United States

Iowa Northern Railway is a short line railroad. The Company operates over 250 miles of rail in northeastern Iowa, with a main line track running from Manly to Cedar Rapids (through Waterloo/Cedar Falls) as well as several branch lines that connect to the main track. The Company provides transportation to customers in agriculture, energy, and manufacturing and offers value-add services to Class I railroads. Iowa Northern Railway was established in 1984 and is based in Waterloo, Iowa.

Sell -