Growth Equity
Sunstone
Sunstone takes minority stakes in growing companies, usually without full control, from San Mateo, California, USA. It states a focus on software & internet and business & professional services.
Stated investment criteria
What Sunstone says it buys
Read from Sunstone’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. Sunstone states that it will take either a controlling or a minority stake. The team figure counts the people the firm shows on one team page, so it is a floor rather than a headcount: firms that split their team across tabs or load it in pages will read low. Nothing here is a commitment by Sunstone to consider any particular business, and nothing on this page is represented as being for sale.
Regulatory record
How Sunstone 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 | $1.6bn |
| Employees | 39 |
| Private funds advised | 8 · $1.1bn gross |
| SEC adviser number | CRD 305064 |
Valuation context
Transaction values in Software & Internet
What companies have actually sold for in software & internet, across 2,672 recorded transactions.
The full software & internet picture - most active acquirers, recent transactions and every investor in the sector.
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Comparable investors
Similar mandates
Other growth equity investors active in software & internet.