Matthew Elliott Mawby
On the New York attorney register since 2012 · office in Valhalla, NY
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 5071188
- Admitted
- 2012 · Third Department
- Status
- Currently registered
- Next registration
- May 2028
Matthew Elliott Mawby is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2012 in the Third Department, with an office in Valhalla, NY; next registration due May 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 Matthew Elliott Mawby has filed the biennial registration the court system requires; the next one is due in May 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
111 other attorneys list Kaufman Borgeest & Ryan LLP or one of its other names as their employer on the register; 50 of them were admitted before 2012, and 37 of the 112 give an office in Valhalla, NY. The 5 whose admission is closest to 2012, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| David Bloom | 2011 | Currently registered |
| Matthew M. Collibee | 2012 | Currently registered |
| John Peter Rancourt | 2012 | Delinquent |
| Kathryn Marie Sullivan | 2012 | Due to re‑register |
| Henry Bundschu Tilson Jr. | 2012 | 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
Matthew Elliott Mawby studied at Tulane University Law School. 491 of its 2,194 living graduates on the register were admitted in the 2010s, as Matthew Elliott Mawby was.
- Same law school
- 2,194living graduates; 87.7% registered (current or due), against 87.1% overall
- Office in Valhalla, NY
- 124living registrants
Of the 124 living registrants with an office in Valhalla, NY, 90 were admitted before 2012 and 30 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 Kaufman Borgeest & Ryan LLP112 on the register, 50 of the others admitted before 2012; 37 of the 112 give an office in Valhalla, NY.
- Tulane University Law School graduates on the register2,194 living, 87.7% registered.
- Attorneys with an office in Valhalla, NY124 living registrants give an office there.
- Westchester County’s registered bar7,255 currently registered, 7.26 per 1,000 residents.
- Admitted in 20129,632 people admitted in 2012 are on the register, 4,129 of them through the Third 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 Matthew Elliott Mawby’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division, Third Department, which admitted Matthew Elliott Mawby in 2012. A complaint about this attorney would go to the Second Department’s Grievance Committee for the Ninth Judicial District, which covers Westchester 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).