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Grattan Investment Group (GIG) is a founder-led investment collective based in Dublin, Ireland, established in 2025. The group comprises experienced business founders and CEOs who focus on investing equity in both mature and growth businesses. GIG aims to leverage its collective expertise, operational experience, and extensive networks to support long-term growth in the companies it invests in.
Operating from 19 Grattan Street, Dublin 2, GIG functions as a network of affiliated operator-investors rather than a traditional venture capital fund. This structure allows members to share expertise, deal flow, and co-invest across various sectors, including manufacturing, construction, renewable energy, and IT. The organization typically acquires majority positions while allowing sellers to retain a meaningful shareholding, emphasizing flexibility in investment structures.
As of now, GIG has a portfolio of three companies and is actively involved in guiding these businesses through mentorship and operational support. The group’s emphasis on active involvement ensures that they take board seats and collaborate closely with management teams, enhancing the potential for long-term success.
Grattan Investment Group invests across a range of stages, including pre-seed, seed, seed-plus, Series A, Series B, and growth equity. The organization primarily focuses on sectors such as renewable energy, manufacturing, construction, and IT. GIG emphasizes acquiring majority stakes in its portfolio companies while allowing sellers to maintain a significant shareholding, which reflects their commitment to long-term partnerships.
The investment strategy is characterized by active involvement in the businesses they support. GIG members often take board seats, providing strategic guidance and collaborating closely with management teams. This hands-on approach allows GIG to add value through mentorship, product development guidance, and assistance in achieving market fit and scaling operations. The group does not adhere to a fixed exit timeframe, which provides flexibility in their investment approach.
Grattan Investment Group's portfolio includes three notable companies:
Barry O'Brien - Co-Founder: Barry has extensive experience in business leadership and investment, contributing to GIG's strategic direction.
Paul McKenna - Co-Founder: Paul is the Chairman of Mac Group and heads Doha Holdings Limited, bringing a wealth of experience in investment and operational management.
Pat O'Reilly - Member: Pat has a background in business development and investment, supporting GIG's portfolio companies.
Eamon Farrell - Co-Founder: Eamon is involved in strategic decision-making and operational oversight within GIG.
Seamus Collins - Member: Seamus contributes to GIG's investment strategy and portfolio management.
Gregory Rose - Member: Gregory heads Malcolm Holdings Limited and is an investor in SCG Growth Partners, providing insights into fintech investments.
David Staples - Member: David supports GIG's operational initiatives and investment evaluations.
David Campion - Member: David is involved in strategic planning and investment decisions at GIG.
Paul Murphy - Member: Paul contributes to GIG's investment strategy and portfolio management.
Tom Carson - Member: Tom is involved in operational support and strategic guidance for portfolio companies.
Stephen Bell - Member: Stephen provides insights into market trends and investment opportunities.
To pitch Grattan Investment Group, founders should send an email to barry.obrien@grattaninvestments.com. It is recommended to include a comprehensive pitch deck that outlines the business model, market opportunity, competitive landscape, and team background. GIG appreciates detailed information that demonstrates the startup's potential for growth.
Response times may vary, but founders can expect to hear back within a few weeks. Warm introductions are beneficial, as they can facilitate a more favorable review of the pitch.
As of 2026, Grattan Investment Group has made notable investments in three companies: SCG Growth Partners, Packaging Holdings, and Acel Energy. These investments reflect GIG's focus on sectors such as fintech and renewable energy.
GIG members actively participate in the management of these companies, often taking board seats to provide strategic guidance and operational support. This involvement has been crucial in driving growth and achieving market fit for their portfolio companies.
What are Grattan Investment Group's investment criteria?
GIG invests in both mature and early-stage businesses, focusing on sectors such as renewable energy, manufacturing, construction, and IT. They typically acquire majority positions while allowing sellers to retain a meaningful shareholding.
How can I pitch to Grattan Investment Group?
Founders can reach out via email at barry.obrien@grattaninvestments.com. It is advisable to include a detailed pitch deck outlining the business model, market opportunity, and team background.
What makes Grattan Investment Group different from other investors?
GIG emphasizes active involvement in its portfolio companies, often taking board seats and collaborating closely with management teams. This hands-on approach allows them to provide strategic guidance and operational support.
What is the geographic focus of Grattan Investment Group?
The firm primarily invests in businesses located in Europe, particularly in Ireland.
What is the typical check size for investments?
Specific check sizes are not publicly disclosed, but GIG typically acquires majority stakes, indicating substantial investment amounts.
What is the post-investment involvement like?
GIG members actively participate in the management of portfolio companies, often taking board seats to provide ongoing mentorship and strategic guidance.
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