Key Takeaways
- • Brian Sieben joined Sheppard as a partner in the tax practice group and leader of the private client services practice in New York, effective June 2, 2026, bringing expertise in ultra-high-net-worth wealth structuring from Davis Polk.
- • Sieben specializes in complex estate planning, tax-efficient wealth transfer strategies, gifting arrangements, investment structuring, and succession planning for closely held businesses and family offices.
- • The hire reflects Sheppard's continued expansion in high-net-worth advisory services, complementing the firm's broader private equity and corporate practice growth.
- • Sheppard recently rebranded from "Sheppard Mullin Richter & Hampton LLP" to "Sheppard" as part of positioning ahead of its centennial in 2027.
Summary
Sheppard has appointed Brian Sieben as a partner in its tax practice group and leader of the private client services practice in New York, according to an announcement on June 2, 2026. Sieben, who joined from Davis Polk, brings specialized expertise in advising ultra-high-net-worth individuals, multigenerational families, family offices, fiduciaries, and financial institutions on sophisticated wealth structuring and tax planning strategies.
In his practice, Sieben focuses on designing tax-efficient wealth transfer mechanisms, including complex gifting arrangements intended to preserve capital across generations. His advisory scope encompasses investment structuring for closely held business succession planning and philanthropic planning. This skill set positions the firm to deepen relationships with institutional and family office clients requiring estate planning and wealth preservation counsel.
The appointment aligns with Sheppard's strategic expansion in private equity and corporate advisory services. The firm, which recently completed a rebrand from "Sheppard Mullin Richter & Hampton LLP" to "Sheppard," has demonstrated momentum in building out sector-specific teams, particularly within private equity and wealth advisory. The timing reflects broader institutional demand for integrated legal and advisory services among high-net-worth stakeholders navigating complex tax and succession environments.
In his practice, Sieben focuses on designing tax-efficient wealth transfer mechanisms, including complex gifting arrangements intended to preserve capital across generations. His advisory scope encompasses investment structuring for closely held business succession planning and philanthropic planning. This skill set positions the firm to deepen relationships with institutional and family office clients requiring estate planning and wealth preservation counsel.
The appointment aligns with Sheppard's strategic expansion in private equity and corporate advisory services. The firm, which recently completed a rebrand from "Sheppard Mullin Richter & Hampton LLP" to "Sheppard," has demonstrated momentum in building out sector-specific teams, particularly within private equity and wealth advisory. The timing reflects broader institutional demand for integrated legal and advisory services among high-net-worth stakeholders navigating complex tax and succession environments.
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