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5 August 2026

Multiplier Announces Series B and Arrival of Allen Shim as CFO and President

We're excited to share that Multiplier Holdings has announced a $35 million Series B investment, led by The General Partnership, with participation from Ribbit Capital and Lightspeed Venture Partners.

This marks an exciting milestone for Multiplier, and for Onside as part of its growing network of specialist professional services firms.

The announcement also included the appointment of Allen Shim as President and CFO. Allen was previously CFO at Slack, helping guide the business through its public listing and its $27.7 billion acquisition by Salesforce. His experience scaling high-growth businesses will help strengthen Multiplier as it continues to invest in firms like Onside.

Since becoming part of Multiplier, we've remained the same team, with the same values and the same commitment to providing high-quality advice. What's changing is what's behind us: greater investment in technology, access to a growing network of specialist expertise, and the resources to keep improving how we support ambitious businesses.

Martin Brennan, Founder of Onside Accounting says: “When I first met Multiplier a year ago, I felt we were the perfect match for one another - shared values and a shared ambition for what accounting could become. This investment proves that instinct right. It's genuinely the most exciting time of my career and in Onside's journey, and this is just the beginning of what we can build together."

This latest investment will help accelerate that shared vision. We’re excited about what it means for the future of Onside, our team and the businesses we support.

You can read more on the Wall Street Journal here

Also on Business Wire here

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Onside Accounting is a trading name of Onside Accounting Limited which is registered in England & Wales under Company Registration No. 13428300