Judge, Colorado Court of Appeals

Katharine E. Lum was appointed to the Colorado Court of Appeals in 2022 and is standing for retention for the first time on Nov. 3, 2026¹². Before the bench she was Of Counsel at a Colorado law firm specializing in domestic relations law and clerked for Colorado Supreme Court Justice Gregory J. Hobbs Jr.². She earned her law degree at the University of California, Berkeley².

• Judge, Colorado Court of Appeals, since 2022; liaison to the 15th Judicial District²
• Of Counsel, Cooper Ramp Cage Bucar Lewis (and predecessor firms), specializing in domestic relations law at the trial and appellate levels²
• Clerk to Colorado Supreme Court Justice Gregory J. Hobbs Jr.; JD, University of California, Berkeley School of Law²
• Serves on the Supreme Court Standing Committee on Family Issues and as a board member of the Minoru Yasui Inn of Court²
• Appointed to the Colorado Court of Appeals in 2022; this is her first retention election².
• Bar poll: Colorado Office of Judicial Performance Evaluation 2026 finding (an official state commission evaluation, not an endorsement). Recommendation: "Meets Performance Standards." As published: "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".
• Public discipline: Searched the Colorado Commission on Judicial Discipline's public Determination Database on 2026-10-06 (20 public determinations, 1984 to 2025) and its list of public court filings: no determination or filing names this judge. Discipline short of a public proceeding is confidential and is not listed by name.³