Scott James R. Jr 4

What Happened
Scott James R. Jr, identified as a 10% owner of First Interstate BancSystem, Inc. (FIBK), was granted 2,247 restricted stock units (transaction code A) on June 1, 2026. The grant shows a $0.00 acquisition price (immediate cash value $0). The RSUs are issuable upon vesting and will convert to common shares on June 1, 2027, subject to the reporting person’s continuous service through the earlier of that vesting date or the company’s next annual shareholder meeting.

Key Details

• Transaction date: 2026-06-01; Form 4 filed: 2026-06-03 (appears timely).
• Transaction type/code: Award/Grant (A).
• Shares granted: 2,247 RSUs; price: $0.00; immediate cash value: $0.
• Vesting: June 1, 2027, subject to continued service (per footnote F1).
• Shares held of record per filing (footnote F2): 1,952,320 shares across JS Investments LP and related trusts; the 2,247 RSUs are issuable upon vesting.
• Group/beneficial ownership note (footnote F3): reporting persons may be deemed part of a group and may share beneficial ownership; they disclaim ownership except to the extent of pecuniary interest.

Context
This is a compensation-related RSU grant, not an open-market purchase or sale. RSU awards are standard executive/owner compensation and only convert to actionable shares if/when they vest; they do not necessarily signal a buy or sell decision by the insider. As a 10% owner, the filing reflects significant ownership interests and related entity holdings rather than routine retail insider trading.