Buyout PE
Madison Dearborn Partners LLC
Madison Dearborn Partners LLC acquires controlling stakes in established, profitable businesses, from Chicago, Illinois, USA. It states a focus on software & internet, healthcare & life sciences and financial services.
Stated investment criteria
What Madison Dearborn Partners LLC says it buys
Read from Madison Dearborn Partners LLC’s own website in August 2026. This is what the firm says it buys, not what anyone has recorded it buying, and figures are shown in the currency the firm itself used - nothing here is converted. Every line links to the page it was read from.
Sources
A stated mandate is a firm’s description of itself and was true of the page on the day it was read; firms widen and narrow what they will look at without updating the site. Madison Dearborn Partners LLC states that it will take either a controlling or a minority stake. Nothing here is a commitment by Madison Dearborn Partners LLC to consider any particular business, and nothing on this page is represented as being for sale.
Regulatory record
How Madison Dearborn Partners LLC is registered
From this firm's Form ADV, the annual filing every registered and exempt investment adviser makes to the SEC.
| Adviser status | SEC registered |
| Regulatory assets under management | $21bn |
| Employees | 73 |
| Private funds advised | 57 · $21bn gross |
| SEC adviser number | CRD 157349 |
Recorded transactions
Buying and selling
Deals in which Madison Dearborn Partners LLC is named as buyer or seller in the transaction archive. 4 recorded exits, most recently in 2024. 3 recorded acquisitions.
| Company | Side | Counterparty | Year | Consideration |
|---|---|---|---|---|
| LinQuest | Sold | KBR | 2024 | $737m |
| IPL Plastics | Bought | CDPQ | 2020 | $746m |
| Benefytt | Bought | — | 2020 | $625m |
| LGS Innovations LLC | Sold | CACI | 2019 | $750m |
| Powerflute | Sold | Mondi | 2018 | $411m |
| Aderant Holdings | Sold | Roper Technologies | 2015 | $675m |
| Performance Health | Bought | Patterson Companies | 2015 | $715m |
Compiled from a transaction archive of 10,204 recorded deals. Most private transactions are never disclosed, so this is a sample of a firm’s activity rather than a complete record of it.
Valuation context
Transaction values in Software & Internet
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