Grattan Investment Group
Founders helping Founders
19 Grattan Street, Dublin 2, Ireland
A group of experienced business founders and CEOs who invest equity in mature and growth businesses, drawing on our collective expertise, operational experience, and networks to actively support long-term growth.
Founded in 2025, Grattan Investment Group (“GIG”) is a founder-led investment group making active equity investments in private businesses, from early stage to maturity, with a clear focus on helping founders grow and build enduring companies
Partner Businesses
Partnerships are a key part of Grattan Investment Groups growth strategy, with many overlapping directors and executives
Doha Holdings Limited: ("Doha") An investment company headed by Paul McKanna. Paul is the founder and Chairman of the Mac Group. Doha are an investor into Acel Energy and Estars.
Malcolm Holdings Limited: An investment company headed by Gregory Rose. Gregory is the Chairman and Group Chief Executive Officer of Lynch Insurance Brokers Ltd. Malcolm is an investor into SCG Growth Partners
Cloonmaan Limited: Cloonmaan Limited is the Irish investment vehicle of Barry O’Brien and Ruth O'Brien, through which they makes strategic co-investments alongside trusted partners.