Dave Holahan Counsel
New York
New York
New York
Dave has extensive trial experience at the state and federal levels, including in the United States District Court for the Southern District of New York, the Delaware Court of Chancery, and the Commercial Division of New York State’s Supreme Court, New York County. Dave also has experience representing and defending clients' rights and remedies before federal and state regulators. Among other of Dave's successful trial outcomes, Dave served as co-lead counsel and secured a complete victory for his client in a dispute between two joint venture real-estate development partners after completing a 23-day bench trial in New York County’s Commercial Division and authoring the post-trial brief.
A zealous advocate for his clients, Dave is particularly adept at developing overall litigation strategies and, where advisable, advising clients regarding litigation avoidance, such as resolving business disputes through negotiation and mediation. He is skilled in working efficiently on behalf of his clients by quickly assessing potential liability and exposure, including the viability of any available claims and defenses, and aggressively acting to use the same in helping his clients achieve the best outcome consistent with their practical business objectives. Where appropriate and necessary, Dave has utilized his broad experience in structuring varied agreements with outside litigation funding firms, enabling his clients to litigate or arbitrate meritorious claims while providing alternative sources of funding to pay for the expense of litigation.
New York
New York
Dave has extensive trial experience at the state and federal levels, including in the United States District Court for the Southern District of New York, the Delaware Court of Chancery, and the Commercial Division of New York State’s Supreme Court, New York County. Dave also has experience representing and defending clients' rights and remedies before federal and state regulators. Among other of Dave's successful trial outcomes, Dave served as co-lead counsel and secured a complete victory for his client in a dispute between two joint venture real-estate development partners after completing a 23-day bench trial in New York County’s Commercial Division and authoring the post-trial brief.
A zealous advocate for his clients, Dave is particularly adept at developing overall litigation strategies and, where advisable, advising clients regarding litigation avoidance, such as resolving business disputes through negotiation and mediation. He is skilled in working efficiently on behalf of his clients by quickly assessing potential liability and exposure, including the viability of any available claims and defenses, and aggressively acting to use the same in helping his clients achieve the best outcome consistent with their practical business objectives. Where appropriate and necessary, Dave has utilized his broad experience in structuring varied agreements with outside litigation funding firms, enabling his clients to litigate or arbitrate meritorious claims while providing alternative sources of funding to pay for the expense of litigation.
New York
Ekaterina (Katya) Popoff is experienced in closing complex deals, acting for issuers and underwriters both in the U.S. and abroad in structured securities offerings across a broad range of asset classes including residential mortgages, credit cards, oil and gas assets and commercial loans, and structures, including public and private offerings, repos, CLOs and cost recovery bonds. Drawing on her background as an entrepreneur, she approaches her work with a pragmatic and solution-focused mindset, ensuring that clients receive efficient and practical solutions.
Katya is a passionate and dedicated mentor to junior associates, ensuring that her colleagues receive support and guidance to help them advance their skills and gain confidence. Her other areas of interest include designing, creating and refining deal management systems on complex deals, including learning new strategies, implementing workflows for the associate team to follow and refining approaches from prior deals.
Before joining Orrick, Katya practiced in structured finance at a leading national firm in Canada. Prior to that she founded a specialty tea producer and wholesaler that sold packaged tea blends into the U.S., Canadian and international markets. Under her leadership, the business won numerous awards for taste, packaging design and marketing. She is an avid reader and has recently rekindled her interest in cycling as a means to explore the outdoors and discover new places.
New York
Ekaterina (Katya) Popoff is experienced in closing complex deals, acting for issuers and underwriters both in the U.S. and abroad in structured securities offerings across a broad range of asset classes including residential mortgages, credit cards, oil and gas assets and commercial loans, and structures, including public and private offerings, repos, CLOs and cost recovery bonds. Drawing on her background as an entrepreneur, she approaches her work with a pragmatic and solution-focused mindset, ensuring that clients receive efficient and practical solutions.
Katya is a passionate and dedicated mentor to junior associates, ensuring that her colleagues receive support and guidance to help them advance their skills and gain confidence. Her other areas of interest include designing, creating and refining deal management systems on complex deals, including learning new strategies, implementing workflows for the associate team to follow and refining approaches from prior deals.
Before joining Orrick, Katya practiced in structured finance at a leading national firm in Canada. Prior to that she founded a specialty tea producer and wholesaler that sold packaged tea blends into the U.S., Canadian and international markets. Under her leadership, the business won numerous awards for taste, packaging design and marketing. She is an avid reader and has recently rekindled her interest in cycling as a means to explore the outdoors and discover new places.
New York
He is also the founder of the firm’s Whistleblower Task Force. He previously served as the Managing Director of Orrick’s Litigation Division. The practice group under Mike’s leadership was chosen as one of the top national employment law practices by Law 360.
Chambers USA and Chambers Global has ranked him in Band 1 since it began publishing its rankings, noting he is "a giant of the employment bar, widely regarded as an expert in whistleblowing matters and sex harassment claims,” “sought out by premier clients to handle high-stakes employment litigation and investigations,” and "one of the best lawyers on the East Coast for financial institutions."
Mike has an active trial, arbitration, and appellate practice and handles a number of high-visibility class action and impact cases. He is regularly retained by boards of directors and audit committees to conduct high exposure internal investigations of corporate wrongdoing.
New York
He is also the founder of the firm’s Whistleblower Task Force. He previously served as the Managing Director of Orrick’s Litigation Division. The practice group under Mike’s leadership was chosen as one of the top national employment law practices by Law 360.
Chambers USA and Chambers Global has ranked him in Band 1 since it began publishing its rankings, noting he is "a giant of the employment bar, widely regarded as an expert in whistleblowing matters and sex harassment claims,” “sought out by premier clients to handle high-stakes employment litigation and investigations,” and "one of the best lawyers on the East Coast for financial institutions."
Mike has an active trial, arbitration, and appellate practice and handles a number of high-visibility class action and impact cases. He is regularly retained by boards of directors and audit committees to conduct high exposure internal investigations of corporate wrongdoing.
New York
Prior to joining Orrick, Darrell served as the Global Head of Litigation and Regulatory Proceedings at Goldman Sachs, where he served as a key advisor to the firm and oversaw litigation, arbitration, and other disputes, as well as regulatory, criminal, and investigative proceedings, affecting Goldman Sachs, its world-wide affiliates, or their employees. In this role, Darrell managed a large international team of lawyers that determined legal strategy for threatened or actual litigations, regulatory and criminal matters and other contentious proceedings, oversaw internal investigations, and advised legal and business constituencies on legal, reputational and regulatory risks and issues involving all businesses of Goldman Sachs including investment banking, global markets, merchant banking, research, trading, lending, M&A, asset and wealth management, and consumer lending. Darrell was responsible for the firm’s most critical litigation and regulatory matters and successfully resolved a number of important matters on behalf of the firm.
Before joining Goldman Sachs in 2018, Darrell was a litigation partner at Sullivan & Cromwell LLP. Over the years, Darrell has litigated a broad range of commercial cases, including in the areas of securities, banking, financial services, antitrust, consumer financial products, products liability, business torts, bankruptcy litigation, ERISA and other complex corporate litigation. For example, Darrell has represented several financial institutions and public companies, including Goldman Sachs, JPMorgan, Moody’s, Banco Popular, and Fiat Chrysler, in numerous securities class actions, shareholder litigations and other disputes.
Darrell also has guided corporate and individual clients across the globe through multi-billion-dollar investigations, enforcement proceedings, and significant compliance matters including a wide range of matters before the DOJ, the SEC, the CFTC, FINRA, the Federal Reserve Bank, the New York Department of Financial Services and various state attorneys general, and foreign bank regulators. For example, Darrell advised Goldman Sachs in reaching coordinated resolutions in multiple criminal and regulatory investigations in jurisdictions around the world relating to an alleged multi-billion-dollar money laundering and corruption scheme involving the Malaysian sovereign development company, 1MDB, and senior public officials in Malaysia and the United Arab Emirates. Darrell also served as lead counsel to one of the preeminent automobile manufacturers in multiyear criminal and regulatory investigations relating to diesel emissions, sales reporting and bribery issues.
New York
Prior to joining Orrick, Darrell served as the Global Head of Litigation and Regulatory Proceedings at Goldman Sachs, where he served as a key advisor to the firm and oversaw litigation, arbitration, and other disputes, as well as regulatory, criminal, and investigative proceedings, affecting Goldman Sachs, its world-wide affiliates, or their employees. In this role, Darrell managed a large international team of lawyers that determined legal strategy for threatened or actual litigations, regulatory and criminal matters and other contentious proceedings, oversaw internal investigations, and advised legal and business constituencies on legal, reputational and regulatory risks and issues involving all businesses of Goldman Sachs including investment banking, global markets, merchant banking, research, trading, lending, M&A, asset and wealth management, and consumer lending. Darrell was responsible for the firm’s most critical litigation and regulatory matters and successfully resolved a number of important matters on behalf of the firm.
Before joining Goldman Sachs in 2018, Darrell was a litigation partner at Sullivan & Cromwell LLP. Over the years, Darrell has litigated a broad range of commercial cases, including in the areas of securities, banking, financial services, antitrust, consumer financial products, products liability, business torts, bankruptcy litigation, ERISA and other complex corporate litigation. For example, Darrell has represented several financial institutions and public companies, including Goldman Sachs, JPMorgan, Moody’s, Banco Popular, and Fiat Chrysler, in numerous securities class actions, shareholder litigations and other disputes.
Darrell also has guided corporate and individual clients across the globe through multi-billion-dollar investigations, enforcement proceedings, and significant compliance matters including a wide range of matters before the DOJ, the SEC, the CFTC, FINRA, the Federal Reserve Bank, the New York Department of Financial Services and various state attorneys general, and foreign bank regulators. For example, Darrell advised Goldman Sachs in reaching coordinated resolutions in multiple criminal and regulatory investigations in jurisdictions around the world relating to an alleged multi-billion-dollar money laundering and corruption scheme involving the Malaysian sovereign development company, 1MDB, and senior public officials in Malaysia and the United Arab Emirates. Darrell also served as lead counsel to one of the preeminent automobile manufacturers in multiyear criminal and regulatory investigations relating to diesel emissions, sales reporting and bribery issues.
New York
Ken represents issuers, underwriters and selling security holders on public and private offerings of debt and equity securities and liability management transactions, such as exchange offers, tender offers, and consent solicitations. He also guides businesses through all stages of organization and development by advising on ’34 Act and indenture reporting compliance, corporate governance and related regulatory matters, venture capital and growth equity financings, and corporate and securities law matters arising in connection with merger and acquisition transactions and corporate restructurings and reorganizations. Ken has served as counsel to companies in a variety of industries, including information technologies and services, life sciences and biotechnology, fintech, infrastructure, advertising, telecommunications, clean technology, financial services, and consumer products.
Before his law career, Ken managed his own company, consulting for technology startups, financial services firms, and advertising agencies on web-based initiatives.
New York
Ken represents issuers, underwriters and selling security holders on public and private offerings of debt and equity securities and liability management transactions, such as exchange offers, tender offers, and consent solicitations. He also guides businesses through all stages of organization and development by advising on ’34 Act and indenture reporting compliance, corporate governance and related regulatory matters, venture capital and growth equity financings, and corporate and securities law matters arising in connection with merger and acquisition transactions and corporate restructurings and reorganizations. Ken has served as counsel to companies in a variety of industries, including information technologies and services, life sciences and biotechnology, fintech, infrastructure, advertising, telecommunications, clean technology, financial services, and consumer products.
Before his law career, Ken managed his own company, consulting for technology startups, financial services firms, and advertising agencies on web-based initiatives.
New York
In the 2022 Capital Markets: Securitization: CMBS – Nationwide category of Chambers USA, a client said, “William is an experienced attorney in the CMBS space. He is meticulous and thoughtful, yet commercial, adding value where needed.”
Prior to joining Orrick, Butch was a partner in the New York offices of Kaye Scholer LLP, Thacher Proffitt & Wood LLP and Sidley Austin LLP.
New York
In the 2022 Capital Markets: Securitization: CMBS – Nationwide category of Chambers USA, a client said, “William is an experienced attorney in the CMBS space. He is meticulous and thoughtful, yet commercial, adding value where needed.”
Prior to joining Orrick, Butch was a partner in the New York offices of Kaye Scholer LLP, Thacher Proffitt & Wood LLP and Sidley Austin LLP.