M&A Deal Summary

Greenbriar Equity Group Acquires West Star Aviation

On May 21, 2025, private equity firm Greenbriar Equity Group acquired aerospace company West Star Aviation from The Sterling Group

Acquisition Highlights
  • This is Greenbriar Equity Group’s 11th transaction in the Aerospace sector.
  • This is Greenbriar Equity Group’s 42nd transaction in the United States.
  • This is Greenbriar Equity Group’s 4th transaction in Illinois.

M&A Deal Summary

Date 2025-05-21
Target West Star Aviation
Sector Aerospace
Buyer(s) Greenbriar Equity Group
Sellers(s) The Sterling Group
Deal Type Secondary Buyout
Advisor(s) Harris Williams
Jefferies
Solomon Partners (Financial)
Latham & Watkins (Legal)

Target

West Star Aviation

East Alton, Illinois, United States
West Star Aviation is an independent maintenance, repair, and overhaul (MRO) provider that offers comprehensive services. The company’s extensive capabilities encompass airframe maintenance, paint, interior, and avionics services, supported by the largest Aircraft On Ground (AOG) technician network in the country, ensuring prompt and reliable mobile repair services nationwide. West Star Aviation was founded in 1952 and is based in East Alton, Illinois.

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Buyer(S) 1

Buyer

Greenbriar Equity Group

Greenwich, Connecticut, United States

Investor Investor Investor Investor Investor


Category Private Equity Firm
Founded 1999
PE ASSETS 10.0B USD
Size Mega
Type Sector Focused
DESCRIPTION

Greenbriar Equity Group is a specialized private equity firm focused on investing in the global transportation and advanced manufacturing industries. Companies of interest include traditional carriers, such as railroads, cruise lines, airlines, air freight, shipping, and trucking, as well as ancillary manufacturers and service companies that support the transportation industry. Greenbriar will consider making majority as well as minority investments through a variety of structures, including leveraged buyouts, recapitalizations, growth capital investments, corporate joint ventures and privatizations. The Firm targets businesses valued from $100 million to $1 billion. Greenbriar Equity was formed in 1999 and is based in Greenwich, Connecticut.


DEAL STATS #
Overall 47 of 47
Sector: Aerospace M&A 11 of 11
Type: Secondary Buyout M&A Deals 22 of 22
State: Illinois M&A 4 of 4
Country: United States M&A 42 of 42
Year: 2025 M&A 1 of 1
PREVIOUS DEAL
DATE TARGET DEAL TYPE VALUE
2025-02-20 Breeze

Pleasanton, California, United States

Breeze operates more than 200 locations and provides automotive quick lube, car wash, and repair. Breeze was founded in 1984 and is based in Pleasanton, California.

Sell -

Seller(S) 1

SELLER

The Sterling Group

Houston, Texas, United States

Investor Investor Investor Investor Investor


Category Private Equity Firm
Founded 1982
PE ASSETS 9.0B USD
Size Mega
Type Sector Agnostic
DESCRIPTION

The Sterling Group is a private equity firm focused on acquiring middle-market businesses within basic manufacturing, industrial services, and distribution. Sterling looks for companies valued from $100 to $1000 million with positive cash-flow, strong market positions, and potential to grow. Sterling avoids investments in financial services, real estate, healthcare, or information technology companies. The Sterling Group was formed in 1982 and is based in Houston, Texas.


DEAL STATS #
Overall 36 of 36
Sector: Aerospace M&A 2 of 2
Type: Secondary Buyout M&A Deals 18 of 18
State: Illinois M&A 1 of 1
Country: United States M&A 33 of 33
Year: 2025 M&A 4 of 4
PREVIOUS DEAL
DATE TARGET DEAL TYPE VALUE
2025-05-13 PowerGrid Services

Hartselle, Alabama, United States

PowerGrid Services is a utility services business providing repair and maintenance services for distribution, transmission, and substation infrastructure. PowerGrid Services is based in Hartselle, Alabama.

Sell -
FOLLOWING DEAL
DATE TARGET DEAL TYPE VALUE
2025-07-15 Precision Concepts International

Mooresville, North Carolina, United States

Precision Concepts International is a specialty plastic packaging company providing a broad array of packaging solutions to the personal care and pharmaceutical markets. Precision Concepts International was founded in 2003 and is based in Mooresville, North Carolina.

Buy -