New York lawyer profile

Matthew Joseph Brennan

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Sullivan & Cromwell LLP

Matthew Joseph Brennan is a lawyer licensed in New York under New York State Unified Court System registration number 2115772. According to New York State Unified Court System records, the license status of Matthew Joseph Brennan is Active, with admission in 1987. Matthew Joseph Brennan has an address of record in New York, New York, New York, with Sullivan & Cromwell LLP. This page is a directory listing by ALCBar Lawyer Directory; it is not an endorsement or a referral.

License

License jurisdiction
New York
Licensing authority
New York State Unified Court System
Registration number
2115772
License status
Active, according to New York State Unified Court System records (official registration data). Look up registration number 2115772 in the New York State Unified Court System attorney search
Admitted
1987
Status last verified
Not yet verified by ALCBar. The status was taken from the NYS Unified Court System's official attorney registration data on data.ny.gov (dataset last updated October 10, 2026) and has not been re-checked against that dataset since.

Firm and location

Firm or employer
Sullivan & Cromwell LLP
Address of record
125 Broad St
City
New York
County
New York
Office state or country
New York
ZIP code
10004-2400

Contact details

Phone
(212) 558-4724
Fax
Not stated in the source
Email
Not stated in the source
Website
Not stated in the source

Practice areas

No practice areas are listed for Matthew Joseph Brennan. This means the information is not available, not that Matthew Joseph Brennan does not practice in any area.

Documented matter experience

ALCBar has no reviewed matter records for Matthew Joseph Brennan. This means the information is not available, not that Matthew Joseph Brennan lacks experience.

Sources and verification

InformationSourceStatus
Name, bar number, license status, admission dateNew York State Unified Court System attorney registration dataCopy of the public record; not re-checked by ALCBar since it was copied
Firm, address, phone, fax, email, websiteDirectory copy of New York State Unified Court System recordsNot confirmed by Matthew Joseph Brennan; email delivery not tested
Practice areasDirectory source file (origin not confirmed)Not confirmed
Information confirmed by the attorneyProfile claimNone. This profile has not been claimed.
Independently reviewed informationALCBar reviewNone

Directory listing last updated 2026-10-12. If anything here differs from the New York State Unified Court System record, the New York State Unified Court System record is the authority.

This listing comes from public licensing records. It is not an endorsement, a referral, or a statement about the skills of Matthew Joseph Brennan. ALCBar does not receive payment for this listing.