3SI Security Systems
United StatesEntry
2006
Hold
11yr
Exit
2017
Who owns 3SI Security Systems?
3SI Security Systems is an American Business Services company, now owned by LLR Partners, which acquired it in 2017 from Stirling Square Capital Partners.
Hand-verified · updated 2026-07-08
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Exit Type
Secondary
Buyer
LLR Partners
Exit Year
2017
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Questions
Who owns 3SI Security Systems?
3SI Security Systems is now owned by LLR Partners, which acquired it in 2017 from Stirling Square Capital Partners.
When did LLR Partners acquire 3SI Security Systems?
LLR Partners acquired 3SI Security Systems in 2017, buying from Stirling Square Capital Partners.
Who did 3SI Security Systems sell to?
Stirling Square Capital Partners sold 3SI Security Systems to LLR Partners in 2017 (Secondary).
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