O'Melveny Adds Two Antitrust Partners in San Francisco and DC

The new hires will bolster the firm's antitrust and competition practice group.

Published on Mar. 5, 2026

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Law firm O'Melveny has hired two new antitrust partners, Diana Aguilar and Lauren Weinstein, to join its offices in San Francisco and Washington, DC respectively. Aguilar has experience handling complex litigation involving multinational tech companies and digital markets, while Weinstein represents both defendants and plaintiffs in antitrust cases across various industries.

Why it matters

The additions of Aguilar and Weinstein reflect O'Melveny's focus on strengthening its antitrust and competition capabilities as regulatory scrutiny of major tech firms and other industries continues to intensify. Their hires will help the firm better serve clients navigating complex antitrust issues.

The details

Diana Aguilar has joined O'Melveny's San Francisco office, while Lauren Weinstein has joined the firm's Washington, DC office. Both have been hired as partners in O'Melveny's antitrust and competition practice group. Aguilar has experience handling civil litigation matters involving multinational technology companies and digital markets, representing clients across sectors like tech, financial services, transportation, media, and energy. Weinstein represents both defendants and plaintiffs in antitrust litigation in state and federal courts, as well as in appellate matters, working with clients in a broad range of industries including technology, financial services, transportation, and media.

  • O'Melveny announced the new hires on March 2, 2026.

The players

Diana Aguilar

A new partner at O'Melveny who has joined the firm's San Francisco office and will be part of the antitrust and competition practice group.

Lauren Weinstein

A new partner at O'Melveny who has joined the firm's Washington, DC office and will be part of the antitrust and competition practice group.

O'Melveny

A prominent international law firm that has bolstered its antitrust and competition capabilities with the hiring of Aguilar and Weinstein as new partners.

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The takeaway

O'Melveny's strategic hires of Aguilar and Weinstein demonstrate the firm's commitment to strengthening its antitrust and competition practice as regulatory scrutiny continues to intensify, particularly in the tech industry. The new partners' experience will help the firm better serve clients navigating complex antitrust matters across a range of sectors.