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Blair E. Kaminsky



Blair Kaminsky has a wide-ranging practice focused on complex commercial litigation, representing both individuals and corporations in litigation and investigatory matters frequently touching on large-scale transactions and the financial services industry. Blair is recognized widely for her work, with one client noting she is a “fantastic litigator who provides thoughtful, spot-on advice,” and “manages enormous cases with creativity and enthusiasm.” 

She has extensive experience representing trustees and other interested parties in various RMBS putback matters pending in state and federal courts. She has also represented targets of shareholder class actions arising from mergers and acquisitions. Blair has appeared frequently in the courts of New York and Delaware as well as other state and federal jurisdictions, and also has advised on international litigation and arbitration. Her previous engagements include white-collar defense, bankruptcy litigation, securities-related matters, and employment disputes. Blair is actively involved in HSG’s pro bono practice. Her pro bono engagements have included a Fourth Amendment appeal and obtaining documents from public school districts under a New Jersey public access law. Among other matters, Blair represents Visa in putative nationwide class actions and dozens of individual antitrust actions brought by some of the largest retail merchants in the world, and the Chubb family of insurers in insurance coverage litigation stemming from the opioid epidemic.

Blair is actively involved in Holwell Shuster & Goldberg’s pro bono practice. Her pro bono engagements have included a Fourth Amendment appeal and obtaining documents from public school districts under a New Jersey public access law. She also spearheads HSG’s relationship with Her Justice, which provides legal services to women living in poverty in New York City, and mentors associates working on their own pro bono matters. Blair has organized several joint HSG-Visa clinics to help Her Justice clients seeking uncontested divorces.

Blair was named to Crain’s New York Business’ 2021 list of Notable Women in Law, and received Euromoney Legal Media Group’s 2019 Rising Star Award for Best in Litigation: General Commercial. She has also been named to Benchmark Litigation’s Under 40 Hot List since 2017, and to Profiles in Diversity Journal’s 2016 Women Worth Watching list.

She is a member of The American Lawyer’s first-ever Young Lawyer Editorial Board, and speaks frequently at conferences and other public forums, with recent topics spanning from ethical obligations in e-discovery to fostering diversity and inclusion at law firms.

Prior to joining HSG, Blair was a litigation associate at Wachtell, Lipton, Rosen & Katz and clerked for the Honorable Judith Rogers of the United States Court of Appeals for the D.C. Circuit.

Notable Cases

Notable Cases

  • Visa Inc. and its subsidiaries in various matters, including their defense against class and individual antitrust actions brought by virtually every merchant in the United States and alleging hundreds of billions in damages.
  • Various affiliates of Chubb in nationwide litigation with manufacturers and distributors of opioids, and national pharmacy chains that sold opioids, over insurance coverage for over 3,000 lawsuits brought by governmental entities across the country. HSG is national trial counsel to Chubb in opioid coverage litigation.
  • HSBC, U.S. Bank, and The Bank of New York Mellon as trustee (or securities administrator) in various RMBS putback matters, each involving hundreds of millions of dollars. In connection with those representations, Blair helps lead the firm’s efforts as Liaison Counsel in coordinating dozens of RMBS cases pending in New York state court before the Honorable Marcy S. Friedman. As a key member of the Steering Committee for these cases, Blair has liaised with plaintiffs’ and defendants’ counsel across the putback, monoline, and investor RMBS cases pending before Justice Friedman to establish master orders concerning discovery, dispositive motions, and appointment of a Special Discovery Master, and to raise issues with the Court and Special Discovery Master via common issues briefing.
  • NYSE Euronext in litigation over its contemplated $10 billion merger with Deutsche Boerse.
  • A secured creditor of LBHI in litigation arising from its bankruptcy.
  • A major financial institution in connection with international litigation concerning a collapsed hedge fund.

News and Writings



  • Note, “The Principles for User Generated Content Services: A Middle-Ground Approach to Cyber-Governance,” 121 Harvard Law Review 1387 (2008)
  • Comment, Nat’l Ass’n of Home Builders v. Defenders of Wildlife, 121 Harvard Law Review 405 (2007)
  • Recent Case, Mac Wade v. Kelly, 460 F. 3d 260 (2nd Cir. 2006), 120 Harvard Law Review 635 (2006)
Photo of Blair E. Kaminsky


  • Hon. Judith W. Rogers, U.S. Court of Appeals for the D.C. Circuit, 2008 – 2009


Harvard Law School (J.D., magna cum laude, 2008; Supervising Editor, Harvard Law Review)

University of Pennsylvania (B.A., summa cum laude, 2005)

Bar and Court Admissions

  • New York
  • New Jersey
  • U.S. District Court, Eastern District of New York
  • U.S. District Court, Southern District of New York
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