Perella Weinberg to buy UK advisory boutique Gleacher Shacklock

Perella Weinberg Partners has agreed to acquire Gleacher Shacklock, a UK-based boutique advisory firm.

Financial terms were not disclosed.

The transaction is expected to close in the second half of 2026, subject to regulatory approval and customary closing conditions.

Founded in 2003, Gleacher Shacklock provides strategic and financial advice, including M&A and strategic financial advisory, defence advisory and capital markets advisory.

The firm serves corporates, financial sponsors, sovereign wealth funds and institutions across multiple sectors.

It has about 30 advisory professionals and primarily covers clients in the UK and Europe.

Andrew Bednar, CEO of Perella Weinberg, said: “What sets Gleacher Shacklock apart is not simply the quality of their advice – it is the trust they have earned with clients over more than twenty years, providing highly tailored, independent advice to corporates through all market environments.

“They have the expertise, relationships, and judgment that the most sophisticated clients seek when the stakes are highest. Combining Gleacher Shacklock’s UK and European franchise with Perella Weinberg’s global industry platform creates something special: deep industry, product, and regional expertise, seamlessly delivered whenever and wherever our clients need us most.”

Tim Shacklock, chairman of Gleacher Shacklock, said: “For over two decades, we have built Gleacher Shacklock with a single conviction – that clients are best served by advisors who are wholly independent, deeply experienced, and personally invested in their outcomes. Perella Weinberg shares that conviction.”

Gleacher Shacklock CEO Dominic Lee added: “Perella Weinberg’s global reach and industry expertise will allow us to bring meaningfully more to our clients together, particularly as cross-border activity continues to accelerate. The ability to offer genuinely integrated, senior-led advice on both sides of the Atlantic – across M&A, capital markets, and restructuring – is something our clients have long asked for, and something we can now deliver.”

Perella Weinberg is a US-based independent advisory firm providing strategic and financial advice to corporations, financial sponsors, governments and sovereign wealth funds. It has about 700 employees and offices including New York, London, Houston, Los Angeles, San Francisco, Paris, Chicago, Munich, Palm Beach, Denver, Calgary and Greenwich. The firm has completed other acquisitions in recent years, including funds advisory group Devon Park last year and energy advisory Tudor, Pickering, Holt & Co in 2016.