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AI brief of an SEC Form 8-K · First Interstate BancSystem (FIBK)

First Interstate BancSystem names Jeff Lee Chief Operations Officer, effective Sept. 14

Neutral Impact 3 of 5 leadership Written later

First Interstate BancSystem announced that Jeff Lee, 57, will join as Executive Vice President and Chief Operations Officer of the company and First Interstate Bank, with a formal start expected on September 14, 2026. The filing sets an initial base salary of $480,000 and an expected restricted stock unit award with a $200,000 grant date value, which is a routine executive hiring step for shareholders.

Key points

  • Jeff Lee, 57, to become EVP and Chief Operations Officer; start expected September 14, 2026
  • Initial annual base salary set at $480,000
  • Expected time-based restricted stock units with $200,000 grant date value, vesting in three annual installments beginning September 14, 2027
  • Lee was an independent strategic consultant from March 2025 to November 2025; previously held roles at Seacoast Banking Corporation of Florida until January 2024

The filing

CompanyFirst Interstate BancSystem (FIBK)
Form8-K, current report
Filed with the SECAug 21, 2026, 9:20 AM ET
Accession number0000860413-26-000088

Items reported: 5.02 Director / Officer Change

Read the filing on SEC.gov ↗

Written by AI (Anthropic Claude, claude-haiku-5-5) on Nov 8, 2026, 1:38 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 August 21, 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.