Finance and tax specialist joins Cooley

International Tax Review is part of Legal Benchmarking Limited, 1-2 Paris Garden, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Finance and tax specialist joins Cooley

corcoran-william-90x90

William Corcoran has joined Cooley's tax practice as the first tax partner in its Boston office.

Celebrating 10 years since the firm launched in the city, Corcoran's arrival follows that of partner Ryan Sansom who joined in March. 

Corcoran has a lot of experience in private equity and venture finance tax matters. He advises on the federal and state income tax consequences of corporate and partnership mergers and divisions and represents leveraged buyout, venture capital, mezzanine and other alternative investment vehicles on formation and investment issues. 

Before joining Cooley, Corcoran was a partner at Osler, Hoskin & Harcourt for 12 years. He previously worked at Goodwin, Wilmer and was a partner at Testa. 

more across site & shared bottom lb ros

More from across our site

As the firm embarks on a major shakeup of its EMEA partnerships, some staff will be watching nervously
The buyout of Hucke and Associates continues Ryan’s streak of firm acquisitions; in other news, a UK appeal against VAT on private school fees was dismissed
Tax teams are responding to usual client demand in the region, albeit with increased working from home flexibility, local sources indicate
A 120-plus-day delay to refunds would cost taxpayers almost $3bn in additional interest, the Cato Institute warned; plus indirect tax updates from February
The Office for Budget Responsibility’s pessimistic pillar two forecast accompanied the UK chancellor’s muted Spring Statement, dubbed ‘as dull as possible’ by one adviser
Digital tax reform is dissolving the old ‘temporal buffer’, forcing systems, institutions, and professionals to adapt as real-time reporting reshapes governance, capability, and compliance
Our first instalment features analysis of Deloitte’s landmark EMEA merger, Donald Trump’s Supreme Court tariff showdown and Venezuela’s tax evolution
While some believe it could have a positive effect on the wider advisory landscape, others argue that HMRC’s ‘red tape’ exercise won’t deter bad actors
The political optics of the US’s carve-out deal are poor, but as the Fair Tax Foundation’s Paul Monaghan writes, it preserves pillar two’s guiding ethos
The big four firm reportedly sent ‘threatening’ correspondence to Unity Advisory over its hiring of ex-PwC partners; plus tax recruitment news from the week
Gift this article