Sullivan & Cromwell Headquarters & Corporate Office

About Sullivan & Cromwell

Sullivan & Cromwell LLP was founded in 1879 in New York and has grown into one of the world’s best-known corporate law firms. Across more than 140 years, the firm has advised major financial institutions, corporations, governments, private funds, and other organizations on landmark transactions and disputes. Its historical work has included significant involvement in the development of major American corporations and financial markets.

Today, Sullivan & Cromwell, often abbreviated as S&C, provides legal advice on mergers and acquisitions, capital markets, banking and finance, litigation, investigations, antitrust, tax, restructuring, executive compensation, intellectual property, and other complex corporate matters. The firm operates as one integrated global partnership and currently has more than 1,000 lawyers across 14 offices in leading financial centers around the world.

Sullivan & Cromwell remains a private law partnership rather than a publicly traded corporation. It has not been acquired by a larger law-firm group or public company. Its headquarters remain in New York City’s Financial District at 125 Broad Street, where more than 500 lawyers are based.

Sullivan & Cromwell Headquarters & Corporate Office Address

Current Headquarters

Sullivan & Cromwell LLP
125 Broad Street
New York, NY 10004-2498
United States

This is Sullivan & Cromwell’s verified New York headquarters and primary U.S. office.

Corporate Office

125 Broad Street
New York, NY 10004-2498
United States

The headquarters houses a large portion of the firm’s lawyers and major administrative functions.

Mailing Address

Sullivan & Cromwell LLP
125 Broad Street
New York, NY 10004-2498
United States

Department or attorney-specific correspondence should clearly identify the intended recipient.

Other Important Address

Sullivan & Cromwell also maintains major offices in Washington, D.C., Los Angeles, Palo Alto, London, Paris, Frankfurt, Brussels, Hong Kong, Beijing, Tokyo, Melbourne, Sydney, and Abu Dhabi.

Quick Information

Corporate Phone Number

212-558-4000

This is the verified main telephone number for Sullivan & Cromwell’s New York headquarters.

Customer Service Number

Sullivan & Cromwell does not operate a traditional consumer customer-service department. Clients should contact the attorney, practice group, or office handling their legal matter.

Corporate Office Address

125 Broad Street, New York, NY 10004-2498, United States

Headquarters Address

125 Broad Street, New York, NY 10004-2498, United States

Email

The firm does not publish one universal public client-service email. Its Contact Us page and individual lawyer profiles provide appropriate communication routes.

Industry

Legal services, corporate law, litigation, financial services law, regulatory advice, and international transactions.

Founded

1879

Number of Lawyers

1,000+ lawyers worldwide.

Number of Offices

14 global offices.

Corporate Office Hours

A universal public reception schedule is not prominently published. Attorneys and departments operate according to client and matter requirements.

Website

https://www.sullcrom.com/

Careers Page

https://www.sullcrom.com/Careers

Sullivan & Cromwell Products & Services

Mergers and Acquisitions

Sullivan & Cromwell advises companies, boards, financial institutions, and investors on major domestic and cross-border mergers, acquisitions, divestitures, joint ventures, and strategic transactions.

Capital Markets

The firm advises issuers, underwriters, investors, and financial institutions on equity and debt securities offerings, disclosure requirements, regulatory obligations, and complex financing transactions.

Banking and Finance

S&C provides advice on bank lending, leveraged finance, structured finance, derivatives, financial regulation, and other sophisticated financing arrangements.

Litigation

The firm represents clients in major commercial, securities, antitrust, corporate, intellectual-property, employment, and other disputes in courts and arbitration proceedings.

Investigations and White-Collar Defense

Sullivan & Cromwell advises companies and individuals facing government investigations, regulatory enforcement actions, internal investigations, and criminal or civil allegations.

Antitrust and Competition

The firm provides advice on merger clearance, competition law, regulatory investigations, government enforcement, and antitrust litigation.

Tax

S&C advises on U.S. and international tax issues arising from corporate transactions, investments, financing structures, reorganizations, and estate planning.

Restructuring

The firm represents companies, lenders, creditors, and investors in restructurings, distressed transactions, bankruptcies, and other complex insolvency matters.

Financial Services Regulation

Sullivan & Cromwell advises banks, investment firms, asset managers, insurers, and financial technology companies on complex regulatory requirements in the United States and internationally.

Executive Compensation and Benefits

The firm provides legal advice concerning executive compensation, employee benefits, incentive arrangements, and compensation issues arising from mergers and other corporate transactions.

Sullivan & Cromwell Corporate Phone Numbers

Corporate Phone Number

212-558-4000

This is Sullivan & Cromwell’s verified New York headquarters telephone number.

Corporate Headquarters Number

212-558-4000

The same number serves the firm’s principal headquarters at 125 Broad Street.

New York Office Number

212-558-4000

Clients and other callers seeking a New York lawyer or department can begin with this number.

Washington, D.C. Office Number

202-956-7500

This is the firm’s verified Washington, D.C. office number.

Los Angeles Office Number

310-712-6600

Sullivan & Cromwell publishes this number for its Los Angeles office.

Palo Alto Office Number

650-461-5600

This number serves Sullivan & Cromwell’s Palo Alto office.

London Office Number

+44-20-7959-8900

This is the verified telephone number for Sullivan & Cromwell’s London office.

Hong Kong Office Number

+852-2826-8688

This number serves the firm’s Hong Kong office.

How to Reach a Real Person at Sullivan & Cromwell

For an existing legal matter, contact the attorney or legal team assigned to your case or transaction rather than the general switchboard. Existing clients should have the responsible partner, associate, assistant, or practice-group contact available in prior correspondence.

For a general New York office inquiry, call 212-558-4000 and explain which attorney, department, or practice area you need. Because S&C handles highly specialized legal matters, identifying the lawyer, client name, transaction, or practice area will make routing more efficient.

Do not send confidential legal information through a general website inquiry before an attorney-client relationship has been established. Sullivan & Cromwell specifically warns that website communications do not automatically create an attorney-client relationship.

How to File a Complaint Against Sullivan & Cromwell

Complaints may involve billing, communication, professional conduct, conflicts, legal representation, administrative service, or another issue involving the firm. Before escalating, gather engagement letters, invoices, correspondence, attorney names, relevant dates, and a clear description of the concern.

Step 1: Contact Customer Service

Because S&C is a law firm rather than a consumer-service company, begin with the lawyer or team responsible for your matter and explain the issue directly.

Step 2: Contact the Relevant Department

Billing problems should be directed to the responsible attorney or billing department, while staffing, administrative, recruiting, or other issues should go to the appropriate office function.

Step 3: Request Supervisor or Management Review

If the concern involves an associate or other team member, request review by the responsible partner or another supervising attorney.

Step 4: Use the Company’s Written Complaint Channel

Put the complaint in writing to the responsible partner or office so there is a clear record of the issue, supporting documents, and requested resolution.

Step 5: Contact Corporate Headquarters

If the matter cannot be resolved within the responsible practice group, correspondence may be directed to Sullivan & Cromwell LLP, 125 Broad Street, New York, NY 10004-2498.

Step 6: Use the Specialized Complaint or Dispute Department

Professional responsibility, conflicts, billing, employment, privacy, and legal-compliance issues may require review by the firm’s internal management, general counsel, ethics personnel, or another specialized function.

Step 7: File With the Appropriate Regulator

Lawyer-conduct complaints may be submitted to the relevant state bar disciplinary authority or attorney grievance committee. The correct authority depends on the attorney’s jurisdiction and where the representation occurred.

Step 8: Use Consumer Protection or Financial Dispute Options

Certain billing disagreements may qualify for attorney-fee arbitration or mediation programs offered by state or local bar organizations. Clients should first review the engagement letter and applicable local rules.

Step 9: Consider Formal Legal or Arbitration Procedures

If a serious professional-liability, contractual, or financial dispute remains unresolved, review the engagement agreement for dispute-resolution provisions and consider independent legal advice before pursuing arbitration or litigation.