Watermill Group is a strategy-driven private investment firm. For more than four decades, we have been acquiring, operating and improving companies. Learn more about our firm and approach to value creation.
Stated: EBITDA $3.0M to $15.0M · revenue $35.0M to $300M · Technology, Energy, Media and telecom
Industries: Industrial services (14 companies) · Manufacturing (5 companies) · Transportation and logistics (1 company)
Lower middle market2024 PE fund GAV $172M28 PE funds of 31, latest vintage 20251 transaction in 36 months13 platforms10 investment professionalslast event Mar 30, 2026
THL Private Equity
Stated: Technology, Healthcare, Manufacturing, Agriculture
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
Upper middle market2024 PE fund GAV $21B27 PE funds of 28, latest vintage 20241 transaction in 36 months6 investment professionalslast event Sep 13, 2026
Thurston AdvisorsVero Beach, FL · thurstongroup.com · SEC registered investment adviser
Buyout firm · probableBuild the future of your healthcare business on the pillars of partnership.
Stated: EBITDA $1.0M to $10.0M · majority · Healthcare, Business services
Industries: Business services (1 company) · Healthcare services (stated) · Life sciences (stated)
Lower middle market2024 PE fund GAV $481M10 PE funds of 12, latest vintage 20251 transaction in 36 months1 platform12 investment professionalslast event Aug 26, 2026
Venture firm with private equity activity · probable ••• Locked
Stated: Life sciences, Manufacturing, Transportation and logistics, Healthcare and 1 more
Industries: Healthcare services (2 companies) · Life sciences (2 companies) · Software (1 company)
unsized2024 PE fund GAV not reported0 PE funds of 11 transaction in 36 months3 platforms2 investment professionalslast event Oct 16, 2025
Stated: Business services, Technology, Consumer
Industries: Business services (1 company) · Manufacturing (1 company) · Software (stated)
Middle market2024 PE fund GAV $2.5B62 PE funds of 64, latest vintage 20241 transaction in 36 months1 platform24 investment professionalslast event May 27, 2026
••• Locked
Stated: EBITDA $5.0M to $50.0M · EV up to $1.0B · Media and telecom, Technology
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
Lower middle market2024 PE fund GAV $598M4 PE funds of 6, latest vintage 20251 transaction in 36 months1 platform9 investment professionalslast event May 18, 2026
••• Locked
Stated: minority · Technology
Industries: Aerospace, defense and government (4 companies) · Healthcare services (1 company) · Life sciences (1 company)
Middle market2024 PE fund GAV $3.5B78 PE funds of 82, latest vintage 20261 transaction in 36 months15 investment professionalslast event Jul 28, 2026
••• Locked
Stated: Healthcare, Environmental services
Industries: Transportation and logistics (1 company) · Healthcare services (stated) · Life sciences (stated)
Upper middle market2024 PE fund GAV $7.5B17 PE funds of 17, latest vintage 20231 transaction in 36 months1 platform1 investment professionallast event Aug 10, 2026
••• Locked
Stated: Healthcare, Technology
Industries: Software (2 companies) · Healthcare services (2 companies) · Tech-enabled and IT services (1 company)
Upper middle market2024 PE fund GAV $16B25 PE funds of 25, latest vintage 20221 transaction in 36 months46 investment professionalslast event May 26, 2026
••• Locked
Stated: Manufacturing, Healthcare
Industries: Healthcare services (1 company) · Life sciences (1 company) · Manufacturing (stated)
Middle market2024 PE fund GAV $4.4B18 PE funds of 18, latest vintage 20241 transaction in 36 months1 platform14 investment professionalslast event Apr 20, 2026
••• Locked
Stated: EBITDA $3.0M to $25.0M · revenue $10.0M+ · equity check $20.0M to $100M · minority · Technology
Industries: Healthcare services (1 company) · Life sciences (1 company) · Industrial services (1 company)
Middle market2024 PE fund GAV $1.7B5 PE funds of 6, latest vintage 20231 transaction in 36 months20 investment professionalslast event Aug 4, 2026
Venture firm with private equity activity · probable ••• Locked
Stated: Healthcare
Industries: Healthcare services (stated) · Life sciences (stated)
Lower middle market2024 PE fund GAV $127M1 PE fund of 1investment professionals not trackedlast event Apr 6, 2023
••• Locked
Stated: EBITDA up to $10.0M · Technology, Software, Energy
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
Lower middle market2024 PE fund GAV $260M1 PE fund of 1, latest vintage 20233 investment professionalslast event Nov 22, 2023
Stated: revenue $1.0M to $30.0M · equity check $1.0M to $5.0M · Financial services
Industries: Industrial services (1 company) · Financial services (stated)
Lower middle market2024 PE fund GAV $680M6 PE funds of 6, latest vintage 20196 investment professionalslast event Jun 23, 2026
2•• C•••••• L••Boca Raton, FL · 2•••••••••.com · SEC registered investment adviser
Buyout firm••• Locked
Stated: Technology
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
Middle market2024 PE fund GAV $1.5B16 PE funds of 16, latest vintage 20222 investment professionalslast event May 1, 2026
2••••••New York, NY · 2••.com · SEC registered investment adviser
Buyout firm••• Locked
Stated: Financial services
Industries: Financial services (stated)
Upper middle market2024 PE fund GAV $16B30 PE funds of 35, latest vintage 202413 investment professionalslast event Jul 1, 2026
••• Locked
Stated: Media and telecom, Financial services
Industries: Financial services (stated) · Media and telecom (stated)
Middle market2024 PE fund GAV $2.9B15 PE funds of 21, latest vintage 2019investment professionals not trackedlast event Jun 24, 2026
Infrastructure · probable ••• Locked
Stated: control · Infrastructure, Energy, Technology, Consumer
Industries: Software (1 company) · Healthcare services (1 company) · Life sciences (1 company)
Upper middle market2024 PE fund GAV $14B36 PE funds of 37, latest vintage 202598 investment professionalslast event Aug 3, 2026
Hybrid manager · probable ••• Locked
Stated: revenue $2.0M to $20.0M · equity check $5.0M to $15.0M · Healthcare, Technology
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
unsized2024 PE fund GAV not reported0 PE funds of 0investment professionals not trackedlast event Dec 11, 2025
5• S•••• L••Arlington, VA · 5••••••.com · SEC registered investment adviser
Fund of funds · probable••• Locked
Stated: Infrastructure, Real estate, Financial services
Industries: Financial services (stated) · Energy, utilities and infrastructure (stated) · Real estate (stated)
Middle market2024 PE fund GAV $3.7B15 PE funds of 15, latest vintage 202316 investment professionalslast event Mar 31, 2025
5•• V•••••••San Francisco, CA · 5•••••••••.com · SEC registered investment adviser
Venture firm with private equity activity · probable••• Locked
Stated: Life sciences, Technology
Industries: Life sciences (1 company) · Software (stated) · Tech-enabled and IT services (stated)
Lower middle market2024 PE fund GAV $272M2 PE funds of 2, latest vintage 202217 investment professionalslast event Mar 29, 2012
••• Locked
Stated: Business services, Healthcare, Environmental services
Industries: Healthcare services (3 companies) · Life sciences (2 companies) · Business services (2 companies)
Lower middle market2024 PE fund GAV $584M5 PE funds of 5, latest vintage 20244 platforms18 investment professionalslast event Jul 30, 2026
••• Locked
Stated: Technology
Industries: Software (18 companies) · Financial services (12 companies) · Tech-enabled and IT services (3 companies)
Lower middle market2024 PE fund GAV $399M7 PE funds of 7, latest vintage 20236 investment professionalslast event Jan 19, 2022
••• Locked
Stated: Technology, Financial services
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
Middle market2024 PE fund GAV $1.2B7 PE funds of 7, latest vintage 20241 investment professionallast event May 26, 2026
••• Locked
Stated: Consumer, Financial services, Hospitality and leisure, Media and telecom
Industries: Financial services (stated) · Consumer products and retail (stated) · Consumer services (stated)
Lower middle market2024 PE fund GAV $253M2 PE funds of 2, latest vintage 20252 investment professionalslast event Oct 4, 2024
••• Locked
Stated: equity check $30.0M+ · Technology
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
Middle market2024 PE fund GAV $870M10 PE funds of 10, latest vintage 202312 investment professionalslast event Sep 1, 2026
••• Locked
Stated: Technology
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
Lower middle market2024 PE fund GAV $7.5M2 PE funds of 2, latest vintage 202228 investment professionalslast event Sep 5, 2024
••• Locked
Stated: minority · Healthcare, Technology, Building products, Software
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
unsized2024 PE fund GAV not reported1 PE fund of 31, latest vintage 202114 investment professionalslast event Sep 17, 2026
Private credit manager · probable ••• Locked
Stated: EBITDA $7.5M+ · Healthcare, Aerospace and defense, Media and telecom, Distribution
Industries: Healthcare services (stated) · Life sciences (stated) · Distribution (stated)
Lower middle market2024 PE fund GAV $43.8M1 PE fund of 12 investment professionalslast event Feb 9, 2024
••• Locked
Stated: Aerospace and defense, Transportation and logistics, Technology
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
Lower middle market2024 PE fund GAV $930M14 PE funds of 14, latest vintage 2023investment professionals not trackedlast event Jul 14, 2026
Hybrid manager · probable ••• Locked
Stated: Financial services
Industries: Financial services (stated)
Lower middle market2024 PE fund GAV $3.3M1 PE fund of 1, latest vintage 20233 investment professionalslast event Nov 10, 2021
A•••• G•London · a••.is · SEC exempt reporting adviser
Buyout firm••• Locked
Stated: Infrastructure, Distribution, Energy, Real estate and 2 more
Industries: Financial services (stated) · Distribution (stated) · Energy, utilities and infrastructure (stated)
Upper middle market2024 PE fund GAV $7.6B30 PE funds of 30, latest vintage 202491 investment professionalslast event Sep 1, 2026
Private credit manager · probable ••• Locked
Stated: EV $150M to $750M · Technology, Healthcare, Software, Financial services
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
Large cap2024 PE fund GAV $61B359 PE funds of 364, latest vintage 202638 investment professionalslast event Sep 13, 2026
••• Locked
Stated: Business services, Healthcare, Life sciences, Software
Industries: Software (stated) · Healthcare services (stated) · Life sciences (stated)
Middle market2024 PE fund GAV $1.2B1 PE fund of 1, latest vintage 2021investment professionals not trackedlast event Sep 15, 2026
Venture firm with private equity activity · probable ••• Locked
Stated: Technology, Financial services
Industries: Software (5 companies) · Healthcare services (1 company) · Life sciences (1 company)
Lower middle market2024 PE fund GAV $460M28 PE funds of 28, latest vintage 2022investment professionals not trackedlast event Mar 31, 2026
Venture firm with private equity activity · probable ••• Locked
Stated: Technology, Life sciences
Industries: Life sciences (7 companies) · Manufacturing (1 company) · Software (stated)
unsized2024 PE fund GAV not reported0 PE funds of 2, latest vintage 20199 investment professionalslast event May 13, 2019
••• Locked
Stated: Distribution, Healthcare, Technology, Education and 2 more
Industries: Consumer services (2 companies) · Software (1 company) · Financial services (1 company)
Lower middle market2024 PE fund GAV $123M7 PE funds of 7, latest vintage 2017investment professionals not trackedlast event Sep 17, 2026
••• Locked
Stated: Education, Consumer, Business services, Healthcare and 1 more
Industries: Distribution (2 companies) · Energy, utilities and infrastructure (2 companies) · Industrial services (1 company)
Upper middle market2024 PE fund GAV $14B37 PE funds of 48, latest vintage 20231 platform111 investment professionalslast event Jun 4, 2026
••• Locked
Stated: control · Business services, Healthcare, Software, Consumer and 3 more
Industries: Software (stated) · Healthcare services (stated) · Life sciences (stated)
Upper middle market2024 PE fund GAV $10B7 PE funds of 7, latest vintage 20188 investment professionalslast event Jul 9, 2026
••• Locked
Stated: minority · Healthcare, Consumer, Financial services, Education and 2 more
Industries: Industrial services (1 company) · Manufacturing (1 company) · Healthcare services (stated)
Lower middle market2024 PE fund GAV $543M2 PE funds of 2, latest vintage 2023investment professionals not trackedlast event Sep 17, 2026
••• Locked
Stated: Technology
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
Lower middle market2024 PE fund GAV $21.3M10 PE funds of 10, latest vintage 20241 investment professionallast event Sep 1, 2026
••• Locked
Stated: Business services, Industrials, Technology, Software
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
Lower middle market2024 PE fund GAV $849M13 PE funds of 13, latest vintage 2024investment professionals not trackedlast event Oct 3, 2014
••• Locked
Stated: revenue $10.0M to $100M · equity check $30.0M to $100M · minority · Technology, Software, Infrastructure
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
unsized2024 PE fund GAV not reported0 PE funds of 03 investment professionalslast event Apr 15, 2025
Venture firm with private equity activity · probable ••• Locked
Stated: Technology, Food and beverage, Life sciences, Infrastructure and 1 more
Industries: Software (3 companies) · Tech-enabled and IT services (1 company) · Media and telecom (1 company)
Lower middle market2024 PE fund GAV $28.5M1 PE fund of 1, latest vintage 2019investment professionals not trackedlast event Mar 31, 2022
Hybrid manager · probable ••• Locked
Stated: Technology, Building products
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
unsized2024 PE fund GAV $01 PE fund of 2, latest vintage 20238 investment professionalslast event Sep 17, 2026
••• Locked
Stated: majority · Software, Technology
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
Lower middle market2024 PE fund GAV $147M2 PE funds of 2, latest vintage 20212 investment professionalslast event Jan 13, 2022
A•••• G••••Milan · a••••.com · SEC exempt reporting adviser
Buyout firm••• Locked
Stated: Financial services, Infrastructure, Real estate
Industries: Financial services (stated) · Energy, utilities and infrastructure (stated) · Real estate (stated)
Lower middle market2024 PE fund GAV $11.1M4 PE funds of 4, latest vintage 202454 investment professionalslast event Mar 26, 2026
••• Locked
Stated: Technology
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
Lower middle market2024 PE fund GAV $427M6 PE funds of 6, latest vintage 20231 investment professionallast event Jul 7, 2026
••• Locked
Stated: EBITDA $2.0M to $10.0M · Healthcare
Industries: Healthcare services (stated) · Life sciences (stated)
unsized2024 PE fund GAV not reported0 PE funds of 16 platforms2 investment professionalslast event Sep 17, 2026
Hybrid manager · probable ••• Locked
Stated: majority · Industrials, Technology, Environmental services, Manufacturing
Industries: Software (stated) · Tech-enabled and IT services (stated) · Hardware and deep tech (stated)
unsized2024 PE fund GAV not reported0 PE funds of 0investment professionals not trackedlast event May 12, 2026