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

The firm’s eye-catching UK launch is a major statement of intent, but it will face stern opposition in its quest to be the top global tax player
The postponement came after industry representatives flagged implementation issues with the registration regime; in other news, firms made key tax partner additions
Despite the increased yield, the time taken to resolve enquiries was at a six-year high, new HMRC statistics have revealed
The High Court’s dismissal of barrister Setu Kamal’s legal challenge represents the first successful strike-out under a new law on SLAPPs
IP lawyers, who say they are encouraging clients to build up ‘tariff resilience’, should treat the risks posed by recent orders as a core consideration in cross-border licensing
As Coca-Cola awaits a crucial 11th Circuit Court of Appeals decision this year, its multibillion-dollar tax dispute could have profound implications for investors, cash flow, and corporate transparency
However, women in tax face greater career obstacles than their male counterparts, an exclusive ITR survey of more than 100 women tax leaders revealed
Under Jeff Soar’s leadership, WTS UK aims to scale to 100 partners within five years and challenge the big four
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
Gift this article