Gregory Keith Arenson
On the New York attorney register since 1978 · office in New York, NY
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 1397389
- Admitted
- 1978 · First Department
- Status
- Currently registered
- Next registration
- Feb 2028
Gregory Keith Arenson is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 1978 in the First Department, with an office in New York, NY; next registration due Feb 2028. The status is the same in all 3 files we hold.
What this status means on the register
On the register, “Currently registered” means Gregory Keith Arenson has filed the biennial registration the court system requires; the next one is due in Feb 2028.
- Currently registered unchanged
- Currently registered unchanged
- Currently registered the first file we hold
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; the Jul 3, 2026 and Aug 6, 2026 files for the history.
Others who list this employer on the register
22 other attorneys list Kaplan Fox & Kilsheimer LLP or one of its other names as their employer on the register; 2 of them were admitted before 1978, and 22 of the 23 give an office in New York, NY. The 5 whose admission is closest to 1978, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Robert N. Kaplan | 1964 | Currently registered |
| Theodore Nalitt Kaplan | 1969 | Currently registered |
| Frederic Scott Fox | 1985 | Currently registered |
| Peter Steven Linden | 1985 | Currently registered |
| Laurence David King | 1989 | Currently registered |
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; employer spellings merged (methodology).
Where this record sits on the register
Gregory Keith Arenson studied at University of Chicago Law School (the register spells it “UNIV OF CHICAGO LAW SCH”). 170 of its 3,232 living graduates on the register were admitted in the 1970s, as Gregory Keith Arenson was.
- Same law school
- 3,232living graduates; 87.4% registered (current or due), against 87.1% overall
- Office in New York, NY
- 93,604living registrants
Of the 93,604 living registrants with an office in New York, NY, 3,808 were admitted before 1978 and 89,226 after.
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; living registrants only.
Questions this record leads to
- Everyone who lists Kaplan Fox & Kilsheimer LLP23 on the register, 2 of the others admitted before 1978; 22 of the 23 give an office in New York, NY.
- University of Chicago Law School graduates on the register3,232 living, 87.4% registered.
- Attorneys with an office in New York, NY93,604 living registrants give an office there.
- New York County’s registered bar75,989 currently registered, 46.63 per 1,000 residents.
- Admitted in 19783,834 people admitted in 1978 are on the register, 1,466 of them through the First Department.
- Every registration that reads “Currently registered”286,911 on the register file of Sep 29, 2026, by decade of admission.
- What a New York lawyer may chargeThe court rules on fees, retainers and fee disputes, each cited.
How to confirm it officially
For a statement of Gregory Keith Arenson’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division, First Department, which admitted Gregory Keith Arenson in 1978. A complaint about this attorney would go to the First Department’s grievance committee, which covers New York County, where the register places the office.
This page reads the register file of Sep 29, 2026, and the court system’s own search can be newer; the register shows only the current value, so a suspension that ended before the files we hold, or a censure, leaves no trace here (Appellate Division decisions are published through the court system’s Law Reporting Bureau).