Buyout PE
Castle Island Partners
Castle Island Partners acquires controlling stakes in established, profitable businesses, from Newton, USA. It states a focus on business & professional services and industrials & manufacturing.
Stated investment criteria
What Castle Island Partners says it buys
Read from Castle Island Partners’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.
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. Castle Island Partners states that it will take either a controlling or a minority stake. Nothing here is a commitment by Castle Island Partners to consider any particular business, and nothing on this page is represented as being for sale.
Portfolio
Disclosed holdings
Companies Castle Island Partners lists on its own website. No investment years are published.
| Company | Invested | Years held | Recorded transaction |
|---|---|---|---|
| ADT Pizza | — | — | — |
| Boston Interiors Furniture | — | — | — |
| Organic Dyes and Pigments | — | — | — |
Compiled from Castle Island Partners’s published portfolio page. Where a recorded transaction is shown, that company was the target of a reported deal and has most likely already been realised. Nothing here is represented as being for sale.
Valuation context
Transaction values in Business & Professional Services
What companies have actually sold for in business & professional services, across 668 recorded transactions.
The full business & professional services picture - most active acquirers, recent transactions and every investor in the sector.
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Comparable investors
Similar mandates
Other buyout pe investors active in business & professional services.