Andrew J. Sioson
About Andrew J. Sioson
Andrew J. Sioson is a lawyer based in Washington, DC and has been recognized in Best Lawyers: Ones to Watch® in America since 2026. Andrew J. Sioson is recognized in the following practice area:
- Washington, District of Columbia
- Securities Regulation
Current Firm: Sidley Austin LLP
Education: University of California Berkeley, J.D., graduated 2013
Location: Washington, DC
It takes just a few minutes to optimize your profile for clients looking to engage and lawyers who are ready to refer.
Activate your profile and highlight why your peers recognized in Best Lawyers today.
Nearby Lawyers
Carolyn E. Smith is a top attorney recognized by Best Lawyers in the practice area(s) of Employee Benefits (ERISA) Law. Carolyn E., who practices law in Washington, District of Columbia, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Carolyn E. is held by other top lawyers in the same geographic and legal practice area.
Raymond J. Sherbill is a top attorney recognized by Best Lawyers in the practice area(s) of Closely Held Companies and Family Businesses Law, Corporate Law and Tax Law. Raymond J., who practices law in Bethesda, Maryland, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Raymond J. is held by other top lawyers in the same geographic and legal practice area.
Robert C. MacKichan Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Real Estate and Real Estate Law. Robert C., who practices law in Washington, District of Columbia, has been recognized since 2008. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Robert C. is held by other top lawyers in the same geographic and legal practice area.
Nathaniel Edmonds serves as the Co-Chair of the firm’s litigation practice in Washington, D.C., which houses over 100 lawyers handling a variety of litigation matters, including internal corporate investigations, white collar criminal defense, anti-corruption compliance, sanctions and export controls, data privacy and cyber security, intellectual property and patent litigation, international arbitration, and antitrust counseling. Mr. Edmonds focuses on global internal investigations, in...
Joseph E. Schuler is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Joseph E., who practices law in Reston, Virginia, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Joseph E. is held by other top lawyers in the same geographic and legal practice area.
Kara M. Ariail is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Kara M., who practices law in Tysons, Virginia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kara M. is held by other top lawyers in the same geographic and legal practice area.
Lewis M. Csedrik is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Lewis M., who practices law in Washington, District of Columbia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lewis M. is held by other top lawyers in the same geographic and legal practice area.
Paul Rosenblatt is a litigation partner in the Washington, D.C., office of Kirkland & Ellis LLP. Paul’s practice focuses on representing manufacturers in high-stakes product liability and mass tort litigation. He has played a key role in leading the national expert teams for some of the largest and most complex mass torts and MDLs in the country, including surgical mesh, military earplugs and PFAS. In addition to leading national expert teams, he has extensive experience preparing, ...
Caitlin Orr is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Caitlin, who practices law in Washington, District of Columbia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Caitlin is held by other top lawyers in the same geographic and legal practice area.
Ilona Ely Grenadier Position: Partner. Founding Partner Background: Born, Baltimore, Maryland, May 18, 1940; admitted to Virginia Bar in 1968. Education: Mount Holyoke College (B.A., 1962); George Washington University (J.D., cum laude, 1967). Order of the Coif. Member: Alexandria, Fairfax , Virginia and American (Member, Family Law Section) Bar Associations; Virginia State Bar; Virginia Trial Lawyers Association ; American Academy of Matrimonial Lawyers ; International Academy of Matrimonial...
Explore and Learn
The Family Law Loophole That Lets Sex Offenders Parent Kids
by Bryan Driscoll
Is the state's surrogacy framework putting children at risk?
Recognizing Legal Leaders: The 2027 Best Lawyers Awards in Australia, Japan and Singapore
by Jamilla Tabbara
Market drivers, diversity trends and the elite practitioners shaping the legal landscape.
Holiday Pay Explained: Federal Rules and Employer Policies
by Bryan Driscoll
Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.
Can a Green Card Be Revoked?
by Bryan Driscoll
Revocation requires a legal basis, notice and the chance to respond before status can be taken away.
New Texas Family Laws Transform Navigating Divorce, Custody
by Bryan Driscoll
Reforms are sweeping, philosophically distinct and designed to change the way families operate.
How Far Back Can the IRS Audit You?
by Bryan Driscoll
Clear answers on IRS statutes of limitations, recordkeeping and what to do if you are under review.
US Tariff Uncertainty Throws Canada Into Legal Purgatory
by Bryan Driscoll
The message is clear: There is no returning to pre-2025 normalcy.
Can You File Bankruptcy on Credit Cards
by Bryan Driscoll
Understanding your options for relief from overwhelming debt.
Musk v. Altman: The Lawyers Behind the Case
by Jamilla Tabbara
Meet the Trial Lawyers Shaping One of AI's Biggest Legal Disputes.