William Silas Hackney III
On the New York attorney register since 1998 · office in Chicago, IL
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 2928588
- Admitted
- 1998 · Third Department
- Status
- Due to re‑register
- Next registration
- May 2026
William Silas Hackney III is due to re‑register on the New York attorney register file of Sep 29, 2026. Admitted in 1998 in the Third Department, with an office in Chicago, IL; next registration due May 2026. The status is the same in all 3 files we hold. The registration was due in May 2026 and the register has not recorded it as filed.
What this status means on the register
On the register, “Due to re‑register” means the attorney has a biennial registration falling due or overdue: the rule asks for it within 30 days after the attorney’s birthday in each alternate year, and the record gives the month it is due. The value stays until the register records the filing or marks the registration delinquent, so the month can have passed; by itself it is not a finding.
- Due to re‑register unchanged
- Due to re‑register unchanged
- Due to re‑register 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
214 other attorneys list Seyfarth Shaw LLP or one of its other names as their employer on the register; 57 of them were admitted before 1998, and 9 of the 215 give an office in Chicago, IL. The 5 whose admission is closest to 1998, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Kimberly Ann Altschul | 1998 | Due to re‑register |
| Christa Lee Dommers | 1998 | Due to re‑register |
| Steven Robert Meier | 1998 | Currently registered |
| Edward Scott Morvillo | 1998 | Currently registered |
| Glenn John Smith | 1998 | 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
William Silas Hackney III studied at St. John’s University School of Law (the register spells it “ST JOHNS UNIVERSITY”). 3,260 of its 15,595 living graduates on the register were admitted in the 1990s, as William Silas Hackney III was.
- Same law school
- 15,595living graduates; 88.6% registered (current or due), against 87.1% overall
- Office in Chicago, IL
- 2,265living registrants (outside New York State)
Of the 2,265 living registrants with an office in Chicago, IL, 382 were admitted before 1998 and 1,848 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 Seyfarth Shaw LLP215 on the register, 57 of the others admitted before 1998; 9 of the 215 give an office in Chicago, IL.
- St. John’s University School of Law graduates on the register15,595 living, 88.6% registered.
- New York-admitted attorneys in Chicago, IL2,265 living registrants give an office there.
- Admitted in 19987,302 people admitted in 1998 are on the register, 1,831 of them through the Third Department.
- Every registration that reads “Due to re‑register”47,986 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 William Silas Hackney III’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 William Silas Hackney III in 1998. The register places the office outside New York, so a complaint would go to that department’s grievance committee (22 NYCRR 1240.7(a)(2)).
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).