Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0000860413-25-000098
Filing Date
2025-06-03
Accepted
2025-06-03 14:56:20
Documents
1
Period of Report
2025-06-01

Document Format Files

Seq Description Document Type Size
1 FORM 4 wk-form4_1748976973.html 4  
1 FORM 4 wk-form4_1748976973.xml 4 10442
  Complete submission text file 0000860413-25-000098.txt   14354
Mailing Address 401 NO 31ST STREET BILLINGS MT 59101
Business Address 401 NO 31ST STREET BILLINGS MT 59101 4062555311
FIRST INTERSTATE BANCSYSTEM INC (Issuer) CIK: 0000860413 (see all company filings)

EIN.: 810331430 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 6022 State Commercial Banks
(CF Office: 02 Finance)

Mailing Address C/O FIRST INTERSTATE BANCSYSTEM INC P O BOX 30918 BILLINGS MT 59116
Business Address
HEYNEMAN JOHN M JR (Reporting) CIK: 0001198518 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-34653 | Film No.: 251018833

Mailing Address PO BOX 7113 BILLINGS MT 59103
Business Address PO BOX 7113 BILLINGS MT 59103 406-831-6855
Riki Rae Scott Davidson & John Heyneman Jr., Trustees FBO Riki Scott Davidson Exemption Trust Under the Scott Family 1996 Trust (Reporting) CIK: 0001908784 (see all company filings)

State of Incorp.: WY | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-34653 | Film No.: 251018830

Mailing Address 4100 BIG HORN AVE SHERIDAN WY 82801
Business Address 4100 BIG HORN AVE SHERIDAN WY 82801 307-763-2541
Towanda Investments Limited Partnership (Reporting) CIK: 0001908810 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-34653 | Film No.: 251018829

Mailing Address 4100 BIG HORN AVE SHERIDAN WY 82801
Business Address 4100 BIG HORN AVE SHERIDAN WY 82801 307-763-2541
John M Heyneman Jr. Trust (Reporting) CIK: 0001908848 (see all company filings)

State of Incorp.: WY | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-34653 | Film No.: 251018832

Mailing Address PO BOX 7113 BILLINGS MT 59103
Business Address PO BOX 7113 BILLINGS MT 59103 406-831-6855
Rae Ann Morss & John Heyneman Jr., Trustees FBO Rae Ann Morss Exemption Trust Under the Scott Family 1996 Trust (Reporting) CIK: 0001908849 (see all company filings)

State of Incorp.: WY | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-34653 | Film No.: 251018831