# Union Pacific Corporation chair

entity: /record/union-pacific.md  
predicate: chair  
page: /record/union-pacific/chair  
as_of: 2026-11-09  
cite: AsOf. "Union Pacific Corporation chair: Michael R. McCarthy", undated. Claim clm_9BC4A1D73B8A, https://asof.is/claim/clm_9BC4A1D73B8A, accessed 2026-11-09. Source: https://www.sec.gov/Archives/edgar/data/100885/000010088526000098/unp-20260324.htm.  

As of November 9, 2026, Union Pacific Corporation's chair on the AsOf record is Michael R. McCarthy, undated on the record, from a primary source (sec.gov).

1 claim on Union Pacific Corporation's chair, 1 open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.

## Current chair

What the record asserts on 2026-11-09.

- [Union Pacific Corporation](/record/union-pacific.md) | chair | Michael R. McCarthy | valid undated to present | conf 0.95 | valid | [clm_9BC4A1D73B8A](/claim/clm_9BC4A1D73B8A.md)
  sources: https://www.sec.gov/Archives/edgar/data/100885/000010088526000098/unp-20260324.htm

## Every dated value

One claim per line, oldest first. Superseded claims stay visible.

- [Union Pacific Corporation](/record/union-pacific.md) | chair | Michael R. McCarthy | valid undated to present | conf 0.95 | valid | [clm_9BC4A1D73B8A](/claim/clm_9BC4A1D73B8A.md)
  sources: https://www.sec.gov/Archives/edgar/data/100885/000010088526000098/unp-20260324.htm

## Questions this record answers

### What is Union Pacific Corporation's current chair?

Michael R. McCarthy, undated on the record, from a primary source (sec.gov). The record asserts this claim as of November 9, 2026 (status valid, confidence 0.95).


## Read on

- This page: /record/union-pacific/chair (markdown: /record/union-pacific/chair.md)
- Entity twin: /record/union-pacific.md · timeline: /timelines/union-pacific.md
- Every company's chair: /facts/chair.md

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.