Last Updated: July 27, 2026
In the competitive world of New York’s top law firms, power couples often operate with quiet intensity. Nathaniel D. Cullerton, a litigation partner at the elite Wachtell, Lipton, Rosen & Katz, is one half of such a pair. His wife, Moira Kim Penza, stands as a formidable force in her own right—an accomplished trial lawyer whose career has shaped major cases and drawn national attention. This post explores who she is, her professional journey, their marriage, and what makes their partnership notable in legal circles.
Table of Contents
Who Is Moira Penza?
Moira Kim Penza is a partner at Wilkinson Stekloff, a high-stakes trial firm known for handling complex civil and criminal matters. Before entering private practice, she served as an Assistant U.S. Attorney in the Eastern District of New York. There she led one of the most closely watched prosecutions of recent years: the case against Keith Raniere, leader of the NXIVM organization.
Her work on that trial, which resulted in Raniere’s conviction on racketeering and sex-trafficking charges and a 120-year sentence, earned widespread recognition. She has since been credited with helping advance similar prosecutions against powerful figures. Today, Penza continues to try major cases, including high-profile work defending Altria in litigation related to its investment in JUUL Labs and representing Cargill in multidistrict cattle and beef industry matters.
She is frequently recognized among top women in litigation, including recent honors from Crain’s New York Business as a Notable Woman in Law.
Nathaniel Cullerton and Moira Penza’s Marriage
Nathaniel Cullerton and Moira Penza married on February 20, 2016, at Manhattan City Hall. More than a decade later, they remain a dual-career legal couple navigating the demands of elite New York practice. Cullerton, now in his mid-40s, rose through Wachtell’s ranks after earning degrees from Western Connecticut State University and Georgetown University Law Center, followed by a clerkship on the Second Circuit.
Public records and reports indicate the couple has shared residences in Manhattan’s Upper East Side and a home in Connecticut. Their marriage reflects a shared professional language—both understand the long hours, high pressure, and intellectual rigor that define top-tier litigation.
Key Facts About the Couple at a Glance
| Detail | Nathaniel D. Cullerton | Moira Kim Penza |
|---|---|---|
| Profession | Partner, Litigation | Partner, Trial Lawyer |
| Current Firm | Wachtell, Lipton, Rosen & Katz | Wilkinson Stekloff |
| Notable Background | Complex corporate litigation | Former AUSA; led NXIVM prosecution |
| Marriage Date | February 20, 2016 | February 20, 2016 |
| Education Highlights | Georgetown Law (magna cum laude) | Cornell Law School |
| Recognition | Elite firm partner | Top 250 Women in Litigation; Crain’s Notable Women in Law |
Career Highlights and Shared Professional World
Both attorneys operate at the highest levels of the profession. Here are a few standout points that illustrate their respective paths:
- Penza first-chaired the six-week federal trial of Keith Raniere, securing convictions that generated global media coverage and influenced later sex-trafficking cases.
- She has successfully represented major corporations in product liability, antitrust, and administrative proceedings, including favorable outcomes for Altria.
- Cullerton focuses on sophisticated commercial and corporate litigation at one of the most selective firms in the country.
- The couple’s parallel careers mean they both live the realities of big-firm and trial practice—intense preparation, courtroom pressure, and the constant need for strategic clarity.
- Penza remains a sought-after commentator on trial strategy, drawing on her prosecutorial experience for outlets such as the Wall Street Journal and Law360.
Their story underscores a broader truth in the legal world: successful partnerships often rest on mutual respect for demanding work rather than shared office space.
Why Their Story Captures Attention
Interest in Nathaniel Cullerton’s wife frequently arises because both partners occupy rarefied professional space. In an era when public curiosity about high-achieving couples runs high, Moira Penza’s record offers substance beyond titles. She is not simply “the wife of a Wachtell partner.” She is a trial lawyer who has delivered results in some of the most scrutinized cases of the past decade and continues to do so in private practice.
The pair’s long marriage, dating to 2016, further distinguishes them in a profession known for its toll on personal relationships. While recent public attention has occasionally swirled around firm colleagues and viral moments, the established facts of their marriage and careers remain clear and well-documented.
Conclusion
Moira Penza is a highly accomplished litigator whose work as a federal prosecutor and now as a Wilkinson Stekloff partner places her among New York’s most respected trial lawyers. Married to Nathaniel Cullerton since February 2016, she forms one half of a legal power couple defined by rigorous training, high-stakes results, and sustained professional excellence. Their story is less about celebrity and more about two lawyers who have each built substantial careers while sharing a life in one of the world’s most competitive legal markets. As of mid-2026, both continue to practice at the top of their fields—proof that ambition and partnership can coexist.