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AI brief of an SEC Form 8-K · Union Pacific (UNP)

Union Pacific CFO Jennifer Hamann to retire in early 2027

Neutral Impact 4 of 5 leadership Written later

Union Pacific said Chief Financial Officer Jennifer Hamann will retire in early 2027 after 35 years with the company, and she will keep her current responsibilities until then. The company has not yet named a successor and said it will announce succession plans and further transition details at a later date.

Key points

  • Jennifer L. Hamann, Executive Vice President and Chief Financial Officer, plans to retire effective in early 2027.
  • Hamann joined Union Pacific in 1992 and was named chief financial officer in January 2020.
  • Union Pacific said it will announce succession plans and additional transition details at a later date.
  • The filing reports no financial results; the announcement is furnished as Exhibit 99.1.

The filing

CompanyUnion Pacific (UNP)
Form8-K, current report
Filed with the SECOct 16, 2026, 9:01 AM ET
Accession number0000100885-26-000305

Items reported: 5.02 Director / Officer Change7.01 Regulation FD Disclosure

Read the filing on SEC.gov ↗

Written by AI (Anthropic Claude, claude-haiku-5-5) on Nov 8, 2026, 2:16 AM ET, from the text of the filing and its press-release exhibits only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on October 16, 2026.

Briefs are written by AI from the filing text (each brief's own page names the model) and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the model's reading of the filing for shareholders, not a price forecast. Not investment advice.