Summit Partners

Summit Partners is a Boston, Massachusetts-based private equity investment firm that invests in a broad range of companies headquartered in North America and Europe. The firm provides growth equity, venture capital and credit investments for growth, recapitalizations and management buyouts.

Summit Partners L.P.
Summit Partners LLP
Private Ownership
IndustryPrivate Equity
Founded1984 (1984)
FounderE. Roe Stamps, Stephen Woodsum, Greg Avis
HeadquartersBoston, Massachusetts, United States
Key people
Peter Y. Chung, Managing Director and CEO; Scott C. Collins, Managing Director and COO
ProductsGrowth capital, Venture capital, Recapitalizations, Mezzanine capital, Leveraged buyouts
AUMmore than $20 billion[1]
Number of employees

The company was founded in 1984, and in addition to its Boston headquarters, has offices in Menlo Park, California; and London, England. The firm employs more than 85 investment professionals and more than 150 employees overall.

Since inception, Summit Partners has raised more than $20 billion in capital through 18 equity and fixed income funds.


Summit Partners was founded in 1984 by Stephen Woodsum and E. Roe Stamps, who had worked together at TA Associates and before that at First Chicago Investment Corporation (the predecessor of Madison Dearborn Partners). Woodsum and Stamps were joined shortly thereafter by Greg Avis, who would open the firm's California office in 1993 along with Walter Kortschak. In 2001, Summit Partners completed its management succession led by Bruce Evans, Walter Kortschak, Marty Mannion, Tom Roberts, and Joseph Trustey.

On July 29, 2015, Trustey (then Managing Director and Chief Operating Officer for the firm) was killed in a Milwaukee plane crash along with his daughter Anna.[2]


Summit Partners has invested in more than 400 companies globally. Summit's portfolio includes a broad range of companies headquartered in North America and Europe. The firm focuses on investments in the technology, healthcare and life sciences, and growth products and services sectors.

Some of Summit's most notable investments include:


Since its founding in 1984, Summit Partners has raised 18 equity and fixed income funds:

Fund Inception
AUM ($m)
Summit Ventures 1984 $160
Summit Ventures II 1988 $230
Summit Ventures III 1992 $280
Summit Subordinated Debt Fund 1994 $140
Summit Ventures IV 1995 $610
Summit Subordinated Debt Fund II 1997 $335
Summit Ventures V 1998 $1.12 bill
Summit Accelerator Fund 1999 $170
Summit Ventures VI 2001 $2.08 bill
Summit Subordinated Debt Fund III[21] 2004 $465
Summit Partners Private Equity Fund VII[22] 2005 $3.10 bill
Summit Partners Venture Capital Fund II 2005 $310
Summit Partners Europe Private Equity Fund[23] 2008 €1.05 bill
Summit Partners Subordinated Debt Fund IV ($840 million)[23] 2008 $840
Summit Partners Growth Equity Fund VIII 2012 $2.7 bill
Summit Partners Venture Capital Fund III 2012 $550
Summit Partners Credit Fund 2012 $520
Summit Partners Credit Fund II 2014 $1.05 bill


  1. "Summit collects $4 bln for two funds". 2017-04-04. Retrieved 2017-10-23.
  2. "2 Killed In Milwaukee Plane Crash ID'd As Private Equity Exec Joe Trustey And His Daughter".
  4. Source:Summit Partners Pumps $100 Million Into Antivirus Software Maker AVAST Software. TechCrunch, August 23, 2010
  5. Source:Summit Partners Invests $15 Million in Hittite Microwave Corp. AllBusiness, December 5, 2000
  6. Source:E-TEK Profile.
  7. Source:McAfee Case Study Archived 2010-12-30 at the Wayback Machine.
  8. "Summit Partners acquires Alameda's Perforce Software". 2016-02-03. Retrieved 2018-01-02.
  9. Source:Summit Partners in $273m Technology Exit. Dow Jones Financial News Online, June 9, 2004
  10. Source:Lincare Case Study.
  11. Source:SMDVIP Receives Investment from Summit Partners. AllBusiness, January 5, 2005
  12. Source:Pediatrix Case Study.
  13. Source:Physicians Formula Attracts Equity Investment From Summit Partners Archived 2009-08-08 at the Wayback Machine. Focal Point News, November 2003
  14. Source:FleetCor Closes New $100 Million Series E Equity Financing. Reuters Online, April 8, 2009
  15. Source:Summit Partners Portfolio Archived 2009-11-12 at the Wayback Machine.
  16. Source:Snap Fitness Announces Minority Equity Investment by Summit Partners. Market Wire, June, 2008
  17. Source:Tiny Prints Announces Strategic Investment From Summit Partners and Technology Crossover Ventures. Marketwire, April 23, 2008
  18. Source:Vente-Privee luxury goods website sees cut-price sales soar in downturn. Telegraph UK, July 26, 2009
  19. Source:Web Reservations International Receives Investment from Summit Partners. AllBusiness, April 14, 2004
  20. Westwing Raises $50 Million in Financing Round Led by Summit Partners.
  21. US Summit Partners closes $465m debt fund Archived 2012-07-23 at AltAssets March 18, 2004
  22. US Summit Partners closes $3bn PE fund and $300m VC fund. AltAssets, June 2005
  23. Boston private equity firm Summit Partners closes two funds Archived 2010-03-04 at the Wayback Machine. AltAssets, April 28, 2008
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