Daniel Dunne

Senior Counsel


Daniel Dunne has, for three decades, advised and represented clients in securities and shareholder suits, internal investigations, regulatory proceedings, and complex litigation requiring experience and innovation.

Chambers USA observed Dan’s “enviable client roster includes major corporates and financial institutions, as well as company directors, officers and accountants. He is particularly active in securities-related litigation, with additional experience in shareholder disputes. Adept in the courtroom, has tried more than a dozen cases to verdict in state and federal courts.” One client characterized his cross examination of a Nobel-Laureate economist as simply “amazing.”

Dan has enjoyed considerable success in high-profile national matters with the finest law firms in the country from coast to coast, from the Delaware Court of Chancery to New York Supreme Court to the Washington Supreme Court, where he recently argued an issue of first impression under the Washington State Securities Act. Dan has active matters advising Washington’s most sophisticated legal clients with respect to securities and shareholder matters.

Dan has also been a key part of the winning Orrick team leading the defense of Credit Suisse in against an avalanche of litigation related to claims involving residential mortgage-backed securities (RMBS). Dan has acted as co-lead partner on a number of successful constitutional challenges to state and local taxes and legislation.

  • Dan's notable engagements include the following:

    • Dan has won complete defense verdicts in complex multi-week trials for Deloitte & Touche LLP (accountants' liability), Mentor Graphics (federal securities) and Grant Thornton LLP (accountants' liability).
    • Dan represents technology and financial services companies and their officers and directors in defending securities class actions, shareholder derivative claims, and regulatory matters. Representative engagements and clients include: Microsoft, Credit Suisse, HomeStreet Bank, SeaGen (fka Seattle Genetics), Washington Mutual Inc., Luminent Mortgage Capital, InfoSpace, Celebrate Express, Loudeye Corp., Cell Therapeutics Inc., Vixel, Captaris (fka AVT), Southern Pacific Funding Corporation, Mentor Graphics, PriceCostco, and others.
    • Dan has also represented both US and foreign affiliates of Deloitte & Touche, PricewaterhouseCoopers, KPMG, and Grant Thornton, amongst others, in securities, regulatory and professional liability matters.