secwatch.observer — SEC 8-K summary
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Issuer:     UNION PACIFIC CORP (UNP)
CIK:        0000100885
Form:       8-K
Filed at:   2026-10-16T13:01:58+00:00
Accession:  0000100885-26-000305
Event type: leadership
Sentiment:  neutral
Materiality: 0.45
Item codes: 5.02, 7.01, 9.01
LLM model:  deepseek-v4.1-flash:cloud@v2

Union Pacific CFO Jennifer Hamann to retire in early 2027 after 35 years; successor unnamed
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- Hamann plans to retire as EVP and CFO effective in early 2027, per the Oct. 16, 2026 announcement; she retains her current responsibilities until then.
- Union Pacific said succession plans will be announced at a later date; no replacement was named.
- Hamann joined UP in 1992 on the audit staff and became CFO in January 2020, the first woman to hold the role.
- CEO Jim Vena credited her with guiding finances through COVID-19 and operational transformation; Hamann voiced support for the pending merger.
- Hamann serves on boards including TTX Company, Grupo Ferroviario Mexicano and Steel Dynamics.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/100885/000010088526000305/0000100885-26-000305-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/100885/000010088526000305/unp-20261016.htm
  HTML page:      https://secwatch.observer/filing/0000100885-26-000305

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