New York attorney record · Judicial Dept 3
Mark Stephen Leso
Univ Of San Diego alumna, admitted to the New York bar in 1996, registered office in Windsor, CT. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1996
- Admitted
- 30
- Years in bar
- 2726206
- NY reg #
The record in one line
With 30 years on the register since a 1996 admission, Mark Stephen Leso ranks among the New York bar's most senior active practitioners, longer-tenured than 71% of the currently-active bar.
- 30 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- Top 29%
- by tenure among active NY attorneys
- Law school
- Univ Of San Diego
Data updated May 2026
What this profile tells you
Bar status & tenure
Registration 2726206 with the New York bar authority has long belonged to Mark Stephen Leso, a veteran practitioner still in active good standing. Registration is recorded within Judicial Department 3, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Ss&C Technologies, located in Windsor, CT, ZIP 06095. 4 other attorneys share this firm affiliation in the registry. Educational background: UNIV OF SAN DIEGO (33 registered alumni).
State context & due diligence
After 30 years on the register, Mark Stephen Leso still falls within the New York bar's active cohort, a share of the register detailed further below.
Experience vs. the active New York bar
Few active New York attorneys match Mark Stephen Leso's 30 years since admission in 1996. The histogram plots that tenure against every currently-active attorney in the state.
30 years on the New York bar
Years since admission, all currently-active NY attorneys
30 Top 29% higher than 71% of 284,296 active NY attorneys
Each bar is a band; taller bars hold more active NY attorneys. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NY Office of Court Administration, Attorney Registration · May 2026
Univ Of San Diego's active-bar rate
Of Univ Of San Diego's 33 alumni in the New York register, 59.3% currently hold "Currently registered" status, below the statewide average.
Univ Of San Diego alumni, active-bar rate
The 1996 admission class today
Of the 6,887 attorneys admitted to the New York bar in 1996, 62.7% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 2726206
- Year Admitted
- 1996 (30 yrs · veteran)
- Judicial Department
- 3
- Next Registration
- Nov 2026
Location & Contact
- Company
- Ss&C Technologies
- City
- Windsor, CT
- ZIP Code
- 06095
- Phone
- (203) 209-1813
Education
Status Distribution Across the New York Bar
Mark Stephen Leso's current status, "Currently registered", places this attorney in the 66.2% of the 429,620-attorney New York register currently marked active.
Full statewide breakdown & source note
Source: NY Office of Court Administration, Attorney Registrations. Status counts reflect the latest reporting cycle. Bar status confirms registration only; it does not imply competence, specialty fit, or freedom from complaints.
Other Attorneys at Ss&C Technologies
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Mark Stephen Leso's "Currently registered" listing confirms bar standing only, it is a registration fact to verify, not a verdict on quality or competence.
Frequently Asked Questions
Where is Mark Leso licensed?
Mark Leso is licensed to practice law in New York.
When was Mark Stephen Leso admitted to the bar?
Mark Stephen Leso's admission to the New York bar dates back to 1996.
Where did Mark Stephen Leso go to law school?
Mark Stephen Leso attended UNIV OF SAN DIEGO.
What company does Mark Stephen Leso work for?
Mark Stephen Leso is associated with Ss&C Technologies in Windsor, CT.
Is Mark Stephen Leso in good standing?
Yes, Mark Stephen Leso holds active bar status ("Currently registered").
Sourced from the NY Office of Court Administration, informational only, not legal advice. Full disclosure.
Read our methodology - how this data is sourced, computed, and verified.