# Union Pacific Corporation board members entity: /record/union-pacific.md predicate: board_member page: /record/union-pacific/board_member as_of: 2026-11-12 cite: AsOf. "Union Pacific Corporation board member: John K. Tien", as of 2023-12-14. Claim clm_14057D602307, https://asof.is/claim/clm_14057D602307, accessed 2026-11-12. Source: https://www.sec.gov/Archives/edgar/data/100885/000143774923034441/0001437749-23-034441-index.htm. As of November 12, 2026, Union Pacific Corporation's board member on the AsOf record is John K. Tien, dated December 14, 2023, from a primary source (sec.gov). 1 claim on Union Pacific Corporation's board member, 1 open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted. ## Current board members What the record asserts on 2026-11-12. - [Union Pacific Corporation](/record/union-pacific.md) | board_member | John K. Tien | valid 2023-12-14 to present | conf 0.95 | valid | [clm_14057D602307](/claim/clm_14057D602307.md) sources: https://www.sec.gov/Archives/edgar/data/100885/000143774923034441/0001437749-23-034441-index.htm ## Every dated value One claim per line, oldest first. Superseded claims stay visible. - [Union Pacific Corporation](/record/union-pacific.md) | board_member | John K. Tien | valid 2023-12-14 to present | conf 0.95 | valid | [clm_14057D602307](/claim/clm_14057D602307.md) sources: https://www.sec.gov/Archives/edgar/data/100885/000143774923034441/0001437749-23-034441-index.htm ## Questions this record answers ### What is Union Pacific Corporation's current board member? John K. Tien, dated December 14, 2023, from a primary source (sec.gov). The record asserts this claim as of November 12, 2026 (status valid, confidence 0.95). ## Read on - This page: /record/union-pacific/board_member (markdown: /record/union-pacific/board_member.md) - Entity twin: /record/union-pacific.md ยท timeline: /timelines/union-pacific.md - Every company's board members: /facts/board_member.md --- AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.