PlainAttorney Register file of Sep 29, 2026 · NY Office of Court Administration, via data.ny.gov

Sidley Austin LLP

A law firm on the New York attorney register · most who list it give an office in New York

On the register
800
Registered, current or due
765
Admitted
1966 to 2026

800 attorneys on the New York register file of Sep 29, 2026 list Sidley Austin LLP as their employer; 765 (96%) are registered (currently, or due to re‑register), against 87.1% of all living registrants. They were admitted between 1966 and 2026 (median 2016), and 533 give an office in New York.

When its attorneys were admitted

Sidley Austin LLP: share by decade of admission, against every living registrant <1%1960s1%1970s4%1980s9%1990s19%2000s30%2010s37%2020s
Sidley Austin LLP: share by decade of admission, against every living registrant <1%1960s1%1970s4%1980s9%1990s19%2000s30%2010s37%2020s
Sidley Austin LLP: share by decade of admission, against every living registrant <1%1960s1%1970s4%1980s9%1990s19%2000s30%2010s37%2020s
Sidley Austin LLP: share by decade of admission, against every living registrant <1%1960s1%1970s4%1980s9%1990s19%2000s30%2010s37%2020s
Share of attorneys who list Sidley Austin LLP admitted in each decade (columns) against every living registrant (dashed); register file of Sep 29, 2026.
DecadeThis firmEvery living registrant
1960s<1%2%
1970s1%6%
1980s4%13%
1990s9%17%
2000s19%22%
2010s30%24%
2020s37%15%

Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; employer spellings merged (methodology).

Where they studied

Law schoolAttorneys
New York University School of Law69
Fordham University School of Law67
Columbia Law School65
Harvard Law School54
Georgetown University Law Center54
Cornell Law School35

Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; school spellings matched.

Where its attorneys have their office

OfficeAttorneys
New York, NY533
Washington, DC70
Chicago, IL26
London26
Dallas, TX22
Los Angeles, CA22

Attorneys who list Sidley Austin LLP on the register, page 35 of 40

Currently registered attorneys first, most recently admitted first.

AttorneyAdmittedStatus
Karen Ann Popp1987Currently registered
Steven Koppel1986Currently registered
Michael Joseph Schmidtberger1986Currently registered
Susan Rachel Chalfin1985Currently registered
Scott M. Freeman1985Currently registered
Brian Krisberg1985Currently registered
Patrick K. Okeefe1985Currently registered
Myles Clement Pollin1985Currently registered
David Mark Katz1984Currently registered
Siegfried Paul Knopf1983Currently registered
Irving Louis Rotter1982Currently registered
Mitchell B. Kleinman1979Currently registered
Wendy M. Lazerson1979Currently registered
Cameron Dean Simon Baxendale2024Due to re‑register
Sinclair L Cook2024Due to re‑register
Erik Clement Dupire-Nelson2024Due to re‑register
Kyle Kai Lu Fong2024Due to re‑register
Thomas Jackson Goddard2024Due to re‑register
Michelle Jiang2024Due to re‑register
Chloe Isabella Larsen2024Due to re‑register

Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026.

Looking for a lawyer for a matter?

The register lists who is admitted and where their office is, not what kind of law anyone practises, so this page cannot suggest a lawyer for a problem. The New York State Bar Association’s Lawyer Referral Service matches people with lawyers by area of law; once you have a name, its record here shows whether the lawyer is registered.