New York attorney record · Judicial Dept 1
Katherine Anne Hollingsworth Dyson
University Of Minnesota Law School alumna, admitted to the New York bar in 2009, registered office in Boston, MA. This established record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2009
- Admitted
- 17
- Years in bar
- 4683306
- NY reg #
The record in one line
Katherine Anne Hollingsworth Dyson has held an active New York bar license for 17 years - admitted in 2009, longer-tenured than 38% of the state's currently-active attorneys.
- 17 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #1326 of 2,912
- by tenure in Boston office peers
- Law school
- University Of Minnesota Law School
Data updated August 2026
What this profile tells you
Bar status & tenure
Katherine Anne Hollingsworth Dyson carries New York bar registration 4683306, an established, active practitioner in good 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 Alexion Pharmaceuticals, located in Boston, MA, ZIP 02210. 1 other attorney shares this firm affiliation in the registry. Educational background: University of Minnesota Law School (552 registered alumni).
State context & due diligence
With an established practice on record, Katherine Anne Hollingsworth Dyson remains inside the New York bar's active cohort - see below for how that share of the register compares.
Experience vs. the active New York bar
Katherine Anne Hollingsworth Dyson was admitted in 2009, giving 17 years on the New York register.
17 years on the New York bar
Years since admission, all currently-active NY attorneys
17 Top 62% higher than 38% 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 Boston, MA office peers
Katherine Anne Hollingsworth Dyson's 17-year NY register tenure places mid-pack in Boston, MA: rank #1,326 of 2,912 office peers (46th percentile). See the Boston attorney directory .
- Local rank
- #1,326
- City cohort
- 2,912
- Local percentile
- 46th
- Admitted
- 2009
Nearest tenure peers in Boston
- Aziza Ahmed admitted 2009 · 17 yr
- Muthna Salih Alsahlani admitted 2009 · 17 yr
- Leo Beletsky admitted 2009 · 17 yr
- Alan William Beloff admitted 2009 · 17 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 Katherine compares to fellow University Of Minnesota Law School alumni
Among the 506 University Of Minnesota Law School graduates in the New York register, Katherine Anne Hollingsworth Dyson is longer-tenured than 73%.
17 years vs. University Of Minnesota Law School alumni
Years since admission - 506 NY-registered alumni of this school
17 Top 27% higher than 73% of 506 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
University Of Minnesota Law School's active-bar rate
Of University Of Minnesota Law School's 552 alumni in the New York register, 80.6% currently hold "Currently registered" status, above the statewide average.
The 2009 admission class today
Of the 10,203 attorneys admitted to the New York bar in 2009, 87.4% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 4683306
- Year Admitted
- 2009 (17 yrs · senior)
- Judicial Department
- 1
- Next Registration
- May 2027
Location & Contact
- Company
- Alexion Pharmaceuticals
- City
- Boston, MA
- ZIP Code
- 02210
- Phone
- (857) 206-3702
Education
Status Distribution Across the New York Bar
Katherine Anne Hollingsworth Dyson'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: Alexion Pharmaceuticals
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
View all attorneys at this firm →Near-tenure University Of Minnesota Law School alumni
Fellow alumni on the NY register whose admission year is closest to 2009 (excluding same-firm colleagues above).
Same admission year (2009), other cities
NY-registered attorneys admitted in 2009 whose listed office city differs from Boston, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Katherine Anne Hollingsworth Dyson: closest NY bar admission year outside MA, and closest out-of-state office cities by how many NY-registered attorneys they list (~2,913 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2009)
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
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Compare attorneys →Before you rely on this record
Katherine Anne Hollingsworth Dyson'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 Katherine Dyson licensed?
Katherine Dyson is licensed to practice law in New York.
When was Katherine Anne Hollingsworth Dyson admitted to the bar?
Katherine Anne Hollingsworth Dyson was admitted to the bar in 2009.
Where did Katherine Anne Hollingsworth Dyson go to law school?
Katherine Anne Hollingsworth Dyson attended University of Minnesota Law School.
What company does Katherine Anne Hollingsworth Dyson work for?
Katherine Anne Hollingsworth Dyson is associated with Alexion Pharmaceuticals in Boston, MA.
Is Katherine Anne Hollingsworth Dyson in good standing?
Yes, Katherine Anne Hollingsworth Dyson 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.