Thomas H. Lee Partners, L.P. (THL) is a Boston-based private equity firm founded in 1974 that invests in middle-market growth companies across three industry verticals: Financial Technology & Services, Healthcare, and Technology & Business Solutions. The firm employs an identified sector opportunity (ISO) process and has managed or deployed over $50 billion of equity capital.
Average disclosed round size is $525.4M (across 7 rounds with reported amounts).
Portfolio
9
Fund Size
$6.3B
Top Stage
Growth
Last 12 Mo
0
Team
GR
Ganesh Rao
Managing Director
TD
Tony DiNovi
Chairman
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
11 investments
| Company | Round | Amount | Date |
|---|---|---|---|
| AAgiliti Health, Inc. | Unknown | $2.5B | Feb 2024 |
 Inriver | Growth | — | May 2022 |
 Kinexon | Series A | $130M | May 2022 |
 RightHand Robotics | Series C | $66M | Feb 2022 |
| RRightHand | Series C | $66M | Feb 2022 |
| RightHand Robotics | Series C | $66M | Jan 2022 |
 FourKites | Series D | $100M | Mar 2021 |
| AAshling Partners | Growth | — | Feb 2021 |
| AAgiliti Health, Inc. | Growth | $750M | Jan 2019 |
| FFortna | Growth | — | — |
| CCeridian HCM | Ipo | — | — |
Top Co-Investors
Zebra Technologies4 shared
GV3 shared
Safar Partners3 shared
Build Collective2 shared
F-Prime Capital2 shared
Menlo Ventures2 shared
Matrix Partners2 shared
Global Brain Corporation2 shared
HPS Investment Partners, LLC2 shared
SoftBank Vision Fund1 shared
Epson X Investment Corporation1 shared
Verdane1 shared
Bain Capital Ventures1 shared
Qualcomm Ventures1 shared
Volvo Group Venture Capital1 shared
BMW i Ventures1 shared
TomorrowVentures1 shared
SGInnovate1 shared
private angel investors1 shared
Epson1 shared
Last updated: 20 October 2026