Sterlington has launched a matrimonial and family law practice with the arrival of partner Kelly A. Frawley and counsel Joseph Hyland from Kasowitz. The new practice will focus on divorce, asset distribution, custody, and prenuptial agreements, particularly for high-net-worth and ultra-high-net-worth clients. Frawley, who leads the practice, previously chaired Kasowitz's matrimonial and family law practice. She regularly handles matters involving hedge fund and private equity interests. Hyland specialises in complex financial issues in matrimonial matters, including asset valuation and prenuptial agreement enforcement. The practice extends Sterlington's existing work with founders, senior executives, and ultra-high-net-worth individuals. Managing partner Christopher S. Harrison described the launch as a natural extension of the firm's services during a period of exceptional growth.

Sterlington PLLC has appointed Dr Odysseas G. Repousis as a partner in its litigation and arbitration practices. Repousis joins from Quinn Emanuel, where he was a senior lawyer handling international disputes across multiple sectors. Repousis specialises in commercial disputes involving shareholders, institutional investors, governments and multinational companies. His practice covers shareholder disputes, complex financial matters and cross-border claims spanning telecommunications, energy, infrastructure, financial services and technology sectors. He has secured favourable outcomes in high-stakes litigation and arbitration across the Americas, Europe, the Middle East, Africa and Asia. Repousis holds a PhD in arbitration and investment law, with advanced degrees from Harvard Law School and the University of Hong Kong. He is admitted to practice in New York and England and Wales.

Sterlington has expanded its Private Wealth practice in Philadelphia with three additions: associate Roberta Bombaci and estate and fiduciary accountants Sheryl Roth and Robert M. Maxwell. The hires strengthen the firm's multidisciplinary team advising ultra-high-net-worth individuals, families and family offices. Bombaci joins from Troutman Pepper Locke, bringing expertise in estate and gift tax planning, trusts and estates, and family business succession. Roth and Maxwell join from Morgan Lewis, with Roth offering over 40 years of experience in fiduciary accounting and estate taxation, whilst Maxwell brings experience in estate settlement and post-mortem planning. Maxwell is also an adjunct professor at Villanova University School of Law. The expansion reflects Sterlington's strategy of combining legal and accounting expertise to deliver coordinated solutions for complex estate and succession planning.