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Regulatory profile
Billings, MT · FDIC certificate #1105 · RSSD 659855
Performance workbook
Open the interactive workbook to compare reported quarterly history with national, asset-band and state peers.
Peer interpretation
$10B–$50B asset cohort · 112 institutions
Deterministic peer comparison, not a regulatory rating or diagnosis. “Opportunity” means lower favorable percentile within this asset cohort.
Reported performance
Period-matched peer context
Percentiles use 107 verified constituents for the same filing period.
Ten-year database
| Quarter | Assets | Deposits | Net loans | ROA | ROE | NIM |
|---|---|---|---|---|---|---|
| 2026-06-30 | $25.8B | $21.7B | $14.1B | 1.21% | 9.61% | 3.55% |
| 2026-03-31 | $26.4B | $22.2B | $14.6B | 1.02% | 8.11% | 3.50% |
| 2025-12-31 | $26.6B | $22.4B | $15.1B | 1.20% | 9.95% | 3.43% |
| 2025-09-30 | $27.3B | $22.9B | $15.9B | 1.03% | 8.66% | 3.39% |
| 2025-06-30 | $27.5B | $23.0B | $16.5B | 0.97% | 8.22% | 3.35% |
| 2025-03-31 | $28.2B | $23.0B | $17.2B | 0.81% | 7.04% | 3.28% |
| 2024-12-31 | $29.1B | $23.3B | $17.6B | 0.85% | 7.89% | 3.14% |
| 2024-09-30 | $29.5B | $23.1B | $17.8B | 0.87% | 8.14% | 3.08% |
| 2024-06-30 | $30.2B | $23.1B | $18.0B | 0.87% | 8.34% | 3.03% |
| 2024-03-31 | $30.1B | $23.1B | $18.0B | 0.87% | 8.37% | 3.02% |
| 2023-12-31 | $30.6B | $23.6B | $18.1B | 0.89% | 8.71% | 3.22% |
| 2023-09-30 | $30.5B | $23.8B | $18.0B | 0.91% | 8.96% | 3.26% |
| 2023-06-30 | $30.9B | $23.8B | $18.1B | 0.85% | 8.44% | 3.30% |
| 2023-03-31 | $31.6B | $24.3B | $18.1B | 0.78% | 7.82% | 3.40% |
| 2022-12-31 | $32.2B | $25.1B | $18.0B | 0.92% | 9.01% | 3.58% |
| 2022-09-30 | $31.3B | $25.9B | $17.5B | 0.83% | 8.05% | 3.53% |
| 2022-06-30 | $32.0B | $26.9B | $17.1B | 0.63% | 6.04% | 3.31% |
| 2022-03-31 | $33.1B | $28.1B | $16.9B | 0.32% | 3.05% | 3.02% |
| 2021-12-31 | $19.6B | $16.3B | $9.2B | 1.16% | 11.10% | 2.92% |
| 2021-09-30 | $19.3B | $16.0B | $9.5B | 1.15% | 10.87% | 2.97% |
| 2021-06-30 | $18.9B | $15.6B | $9.7B | 1.12% | 10.52% | 2.96% |
| 2021-03-31 | $18.4B | $15.1B | $9.8B | 1.23% | 11.33% | 3.03% |
| 2020-12-31 | $17.6B | $14.2B | $9.7B | 1.13% | 9.30% | 3.55% |
| 2020-09-30 | $17.0B | $13.9B | $10.1B | 1.09% | 8.85% | 3.61% |
| 2020-06-30 | $16.4B | $13.3B | $10.1B | 0.97% | 7.67% | 3.73% |
| 2020-03-31 | $14.4B | $11.6B | $8.9B | 0.86% | 6.55% | 3.91% |
| 2019-12-31 | $14.6B | $11.7B | $9.0B | 1.52% | 11.88% | 4.05% |
| 2019-09-30 | $14.6B | $11.8B | $9.0B | 1.50% | 11.76% | 4.05% |
| 2019-06-30 | $14.4B | $11.5B | $9.0B | 1.46% | 11.52% | 4.07% |
| 2019-03-31 | $13.4B | $10.8B | $8.4B | 1.45% | 11.65% | 4.00% |
| 2018-12-31 | $13.2B | $10.7B | $8.4B | 1.42% | 11.83% | 3.68% |
| 2018-09-30 | $12.4B | $10.1B | $7.7B | 1.49% | 12.68% | 3.84% |
| 2018-06-30 | $12.2B | $9.9B | $7.7B | 1.47% | 12.54% | 3.82% |
| 2018-03-31 | $12.2B | $10.0B | $7.6B | 1.40% | 11.92% | 3.74% |
| 2017-12-31 | $12.2B | $9.9B | $7.5B | 1.12% | 9.75% | 3.10% |
| 2017-09-30 | $12.1B | $9.9B | $7.5B | 1.00% | 8.80% | 2.87% |
| 2017-06-30 | $8.9B | $7.3B | $5.4B | 1.15% | 11.00% | 3.50% |
| 2017-03-31 | $9.0B | $7.3B | $5.3B | 1.09% | 10.37% | 3.45% |
| 2016-12-31 | $9.0B | $7.4B | $5.4B | 1.23% | 11.09% | 3.59% |
| 2016-09-30 | $8.9B | $7.3B | $5.4B | 1.22% | 10.81% | 3.56% |
| 2016-06-30 | $8.6B | $7.0B | $5.3B | 1.20% | 10.62% | 3.54% |
| 2016-03-31 | $8.7B | $7.1B | $5.2B | 1.08% | 9.60% | 3.53% |
Ownership, transformations and revisions
NIC relationships are time-bounded. Reviewed filing revisions remain distinct from mergers.
FIRST INTERSTATE BANCSYSTEM, INC.RSSD 1123670 · 1989-12-31 to current
FIRST INTERSTATE BANCSYSTEM, INC.RSSD 1123670 · 1976-12-31 to 1989-12-30
FIRST INTERSTATE BANCSYSTEM, INC.RSSD 1123670 · 1973-12-31 to 1976-12-30
FIRST INTERSTATE BANCSYSTEM, INC.RSSD 1123670 · 1971-12-16 to 1973-12-30
2022-02-01RSSD 131650 → 659855 · code 1
2019-04-08RSSD 3603970 → 659855 · code 1
2019-04-08RSSD 2110640 → 659855 · code 1
2018-11-10RSSD 1411032 → 659855 · code 1
2017-08-12RSSD 17464 → 659855 · code 1
2016-08-13RSSD 811756 → 659855 · code 1
No reviewed revisions published.
Latest registered batch · retrieved 8/27/2026, 10:51:00 AM · SHA-256 56519b9e6ae2ada5757ec111f52c6451d5e31d6d47a52fdcf0bf38acf129fcaa · source ↗
Put it in context
Use consistent definitions, then verify material findings against the official filing.