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Charlene Sun

Counsel | She/Her/Hers
Counsel | She/Her/Hers
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Areas of Focus

Overview

Charlene Sun is a counsel in Crowell & Moring’s Orange County office and is a member of the firm’s Antitrust and Competition Group. Charlene's practice involves counseling clients across a number of industries on a wide range of antitrust transactional and litigation matters. Charlene has provided strategic counsel with identifying and coordinating foreign merger control filings, compliance with the Hart-Scott-Rodino Act, and evaluating and advising on competitive issues associated with mergers, acquisitions, and competitor collaborations. She has also represented Fortune 500 companies as plaintiffs in antitrust recovery actions.

While Charlene was in law school, she served as an editor of the UC Irvine Law Review. She participated in various pro bono projects, which included work on cases concerning asylum, bankruptcy, and domestic violence.

Charlene serves as co-chair of the LGBTQ+ Affinity group, where she focuses on promoting equity, inclusion, and opportunity within the firm.

Career & Education

    • Chapman University, B.S., business administration, 2015
    • University of California, Irvine School of Law, J.D., magna cum laude, 2019
    • Chapman University, B.S., business administration, 2015
    • University of California, Irvine School of Law, J.D., magna cum laude, 2019

    • California
    • Minnesota
    • California
    • Minnesota

Charlene's Insights

Client Alert | 7 min read | 11.02.26

DOL Finalizes PBM Fee Disclosure Requirements

On October 29, 2026, the U.S. Department of Labor’s (DOL) Employee Benefits Security Administration (EBSA) issued a 350-page final rule requiring providers of pharmacy benefit management services and their affiliated brokers and consultants to disclose fees and compensation received to fiduciaries of covered large, self-insured ERISA group health plans. According to DOL’s accompanying fact sheet, the disclosures will give employers more visibility into the payments PBMs may receive from various sources and help fiduciaries evaluate and monitor arrangements over time. ...

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Recognition

  • Orange County Coalition for Diversity in the Law (OCCDL): Top Young Lawyers, 2025

Charlene's Insights

Client Alert | 7 min read | 11.02.26

DOL Finalizes PBM Fee Disclosure Requirements

On October 29, 2026, the U.S. Department of Labor’s (DOL) Employee Benefits Security Administration (EBSA) issued a 350-page final rule requiring providers of pharmacy benefit management services and their affiliated brokers and consultants to disclose fees and compensation received to fiduciaries of covered large, self-insured ERISA group health plans. According to DOL’s accompanying fact sheet, the disclosures will give employers more visibility into the payments PBMs may receive from various sources and help fiduciaries evaluate and monitor arrangements over time. ...

View All Insights

Insights

Client Alert | 7 min read | 11.02.26

DOL Finalizes PBM Fee Disclosure Requirements

Firm News | 1 min read | 08.11.26

Crowell & Moring Represents Orla Mining as U.S. Deal Counsel in Merger With Equinox Gold Valued at $18.5 Billion

Client Alert | 7 min read | 06.26.26

Federal Roundup: Updates for PBMs and Medicare Advantage Organizations

Client Alert | 3 min read | 02.24.26

State-Level Merger Control Grows: California Joins “Mini-HSR” Trend with Senate Bill 25

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Practices

Charlene's Insights

Client Alert | 7 min read | 11.02.26

DOL Finalizes PBM Fee Disclosure Requirements

On October 29, 2026, the U.S. Department of Labor’s (DOL) Employee Benefits Security Administration (EBSA) issued a 350-page final rule requiring providers of pharmacy benefit management services and their affiliated brokers and consultants to disclose fees and compensation received to fiduciaries of covered large, self-insured ERISA group health plans. According to DOL’s accompanying fact sheet, the disclosures will give employers more visibility into the payments PBMs may receive from various sources and help fiduciaries evaluate and monitor arrangements over time. ...

View All Insights