New York attorney record · Judicial Dept 1
Mark Russell Sperling
Harvard Law School alumna, admitted to the New York bar in 2016, registered office in Basking Ridge, NJ. This record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2016
- Admitted
- 10
- Years in bar
- 5447164
- NY reg #
The record in one line
Admitted in 2016, Mark Russell Sperling has built 10 years of active New York practice - more tenure than 25% of the state's currently-active attorneys.
- 10 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #158 of 178
- by tenure in Basking Ridge office peers
- Law school
- Harvard Law School
Data updated August 2026
What this profile tells you
Bar status & tenure
Bar number 5447164 on the New York register belongs to Mark Russell Sperling, currently in active standing. Registration is recorded within Judicial Department 1, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Daiichi Sankyo, Inc., located in Basking Ridge, NJ, ZIP 07920. 5 other attorneys share this firm affiliation in the registry. Educational background: Harvard Law School (9,205 registered alumni).
State context & due diligence
Mark Russell Sperling is currently part of the New York bar's active cohort, a group the breakdown below sizes against the full register.
Experience vs. the active New York bar
10 years into an active New York practice since a 2016 admission, Mark Russell Sperling sits here on the statewide experience curve - taller bars hold more attorneys at that experience level.
10 years on the New York bar
Years since admission, all currently-active NY attorneys
10 Top 75% higher than 25% of 290,787 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 · August 2026
Tenure among Basking Ridge, NJ office peers
In Basking Ridge, NJ's NY-registered cohort of 178, Mark Russell Sperling sits at local tenure rank #158 (88th percentile). See the Basking Ridge attorney directory .
- Local rank
- #158
- City cohort
- 178
- Local percentile
- 88th
- Admitted
- 2016
Nearest tenure peers in Basking Ridge
- Michael Cory Bachmann admitted 2016 · 10 yr
- David Michael Kupfer admitted 2016 · 10 yr
- Adrianna Christina Rudzinsky admitted 2016 · 10 yr
- Joshua Scott Wirtshafter admitted 2016 · 10 yr
How local rank is computed
Rank uses years since NY-bar admission among non-deceased registry rows that list the same office city and state, a local placement, not a statewide claim. Source: NY Office of Court Administration Attorney Registration · as of August 2026. Derived local rank, not published upstream.
How Mark Russell compares to fellow Harvard Law School alumni
Among the 8,724 Harvard Law School graduates in the New York register, Mark Russell Sperling is longer-tenured than 35%.
10 years vs. Harvard Law School alumni
Years since admission - 8,724 NY-registered alumni of this school
10 Top 65% higher than 35% of 8,724 fellow alumni
Each bar is a band; taller bars hold more fellow alumni. 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 · August 2026
Harvard Law School's active-bar rate
Of Harvard Law School's 9,205 alumni in the New York register, 74.8% currently hold "Currently registered" status, above the statewide average.
The 2016 admission class today
Of the 8,420 attorneys admitted to the New York bar in 2016, 72.9% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 5447164
- Year Admitted
- 2016 (10 yrs · mid-career)
- Judicial Department
- 1
- Next Registration
- Nov 2026
Location & Contact
- Company
- Daiichi Sankyo, Inc.
- City
- Basking Ridge, NJ
- ZIP Code
- 07920
- Phone
- (332) 284-5762
Education
Status Distribution Across the New York Bar
Mark Russell Sperling's current status, "Currently registered", places this attorney in the 67.2% of the 432,625-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.
Same firm affiliation: Daiichi Sankyo, Inc.
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Harvard Law School alumni
Fellow alumni on the NY register whose admission year is closest to 2016 (excluding same-firm colleagues above).
Same admission year (2016), other cities
NY-registered attorneys admitted in 2016 whose listed office city differs from Basking Ridge, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Mark Russell Sperling: closest NY bar admission year outside NJ, and closest out-of-state office cities by how many NY-registered attorneys they list (~179 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2016)
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
Verify This Attorney
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Compare attorneys →Before you rely on this record
Mark Russell Sperling'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 Russell Sperling licensed?
Mark Russell Sperling is licensed to practice law in New York.
When was Mark Russell Sperling admitted to the bar?
Mark Russell Sperling has been on the New York bar register since 2016.
Where did Mark Russell Sperling go to law school?
Mark Russell Sperling attended Harvard Law School.
What company does Mark Russell Sperling work for?
Mark Russell Sperling is associated with Daiichi Sankyo, Inc. in Basking Ridge, NJ.
Is Mark Russell Sperling in good standing?
Yes, Mark Russell Sperling holds active bar status ("Currently registered").
Cite this page & disclosure
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.