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Katharine E. Lum

Court of Appeals Judge

Running in 2026: Court of Appeals Judge (November 3)

Judicial performance evaluation, 2026

Commission recommendation: Meets performance standards (9–0) · 9 of 9 commissioners voted “meets”

The commission's narrative

The State Commission on Judicial Performance finds that Judge Katharine E. Lum, by vote of 9-0 with one commissioner absent, and one commission vacancy, MEETS PERFORMANCE STANDARDS . Colorado’s statutory judicial performance standards are integrity, legal knowledge, communication skills, judicial temperament, and service to the legal profession and the public.

Judge Lum was appointed to the Colorado Court of Appeals in 2022 and has served for four years. This is her first time standing for retention. The Commission finds she embodies the qualities of an outstanding appellate judge and is a valuable asset to the Colorado Court of Appeals. Her opinions are fair and thoughtful, and she delivers well-reasoned decisions based on the law and facts. She is an exceptional judicial writer who conveys her opinions in a clear and accessible style understood by litigants, practitioners, and members of the public alike. She arrives well-prepared to oral arguments, and is engaged, present, and respectful in the Courtroom. She also serves as the Liaison to the 15th Judicial District. Beyond her duties as a judge, she participates in community service activities that advance the court’s mission.

The Commission conducted its evaluation of Judge Lum by considering her self-evaluation, observing her oral arguments, examining a selection of her legal opinions (including dissents), conducting an in-person interview with her, and reviewing survey responses submitted by attorneys and judges. Every survey respondent agreed that Judge Lum meets performance standards. She received positive feedback in regard to her strong listening, polite and respectful nature, and thorough preparation.

Judge Lum earned her JD from the University of California Berkeley School of Law. Prior to joining the bench, she was Of Counsel with Cooper Ramp Cage Bucar Lewis (and predecessor firms) where she specialized in domestic relations law at the trial and appellate levels; and she clerked for the Honorable Gregory J. Hobbs Jr. of the Colorado Supreme Court. She serves on the Supreme Court Standing Committee on Family Issues; as the Court of Appeals liaison and coordinator for a long-standing externship program with Colorado law schools; and as a board member of the Minoru Yasui Inn of Court.

1300 Broadway, Suite 220 Denver, Colorado 80203

(303) 928-7777

The evaluation on judicialperformance.colorado.gov · 2026 Retention Survey Report (PDF) · 2025 Interim Survey Report (PDF)

From the state's Office of Judicial Performance Evaluation. A commission of citizens, attorneys and non-attorneys for each judicial district (the state commission for appellate judges) reviews each judge standing for retention and finds that they meet, or do not meet, performance standards. Voters decide.

Personal Financial Disclosures

debts: up to $849,997 on their latest disclosure with entries: the top of each range they selected, added up (the form asks for ranges, not amounts; a range with no top counts at its figure).

StatementFiledWhat it lists
2026
Judge (Colorado Court of Appeals)
2026-08-136 income sources, 6 assets, 4 colorado property, 3 offices and directorships, 1 state-regulated businesses, 5 debts
2026
Judge (Colorado Court of Appeals)
2026-05-036 income sources, 6 assets, 6 colorado property, 3 offices and directorships, 1 state-regulated businesses, 3 debts
2026 Annual
Judge (Colorado Court of Appeals)
2026-01-096 income sources, 6 assets, 6 colorado property, 3 offices and directorships, 1 state-regulated businesses, 4 debts
2026 (amendment)
Judge (Colorado Court of Appeals)
2026-01-026 income sources, 6 assets, 6 colorado property, 3 offices and directorships, 1 state-regulated businesses, 4 debts
2025
Judge (Colorado Court of Appeals)
2025-01-106 income sources, 6 assets, 3 colorado property, 3 offices and directorships, 1 state-regulated businesses, 3 debts
2024
2024-10-28—
2024 update (amendment)
2024-05-30—
2024 update (amendment)
2024-03-10—
2024
Judge (Colorado Court of Appeals)
2024-01-066 income sources, 6 assets, 3 colorado property, 3 offices and directorships, 1 state-regulated businesses, 3 debts

Findings

Context Errors in the record

1 error in their public record: TRACER's listing names them differently from the form they signed

We found these in the records as filed or as TRACER lists them, and read each as meant (shown here so anyone can check the reading): TRACER lists their 2026 disclosure as “LUM, KATHERINE”; the form is signed “Katharine Lum”.

What to check
  • The original filing in TRACER for each one.
  • These don't change what we show: we use the amount, name or date as meant.
Rule: Errors in the record

How this rule works

Gifts they reported

What Katharine E. Lum listed on their quarterly reports of gifts, honoraria and other benefits since 2024: $1,150 across 6 items from 6 sources. Givers who are clients of a registered lobbyist are marked.

FromWhat, whenValue
KATE ROIN
$450 in all
ATTENDED BIRTHDAY DINNER FOR A FRIEND WITH SPOUSE AT RESTAURANT. GROUP DINNER - AMOUNT IS APPROXIMATE. · 2024-04-27$450
CBA-CLE
$290 in all
DISCOUNTED REGISTRATION TO FAMILY LAW INSTITUTE SEMINAR (NO MONEY RECEIVED) · 2024-08-08$290
COOPER RAMP CAGE BUCAR LEWIS (CRCBL)
$125 in all
CRCBL (MY FORMER LAW FIRM) SPONSORED A BAY AT METRO VOLUNTEER LAWYERS FUNDRAISER. I SAT IN THE BAY. NO ACTUAL FUNDS RECEIVED. AMT IS APPROXIMATE. · 2024-10-05$125
AMERICAN ACADEMY OF MATRIMONIAL LAWYERS
$115 in all
ANNUAL JUDGES' DINNER · 2025-10-07$115
AMER. ACADEMY OF MATRIMONIAL LAWYERS
$110 in all
ATTENDED AAML 2024 ANNUAL JUDGES' DINNER · 2024-09-24$110
NIRALI VYAS
$60 in all
GIFT CARD AND CRAFT SUPPLIES (AMOUNT AND DATE ARE APPROXIMATE) · 2026-03-13$60

From the reports in TRACER (search them: Gifts and Honoraria Report). Officials file one each quarter in which they receive a reportable item (C.R.S. 24-6-203).