secwatch / observer
8-K filed May 29, 2026, 4:26 PM ET ticker FIBK CIK 0000860413
leadership confidence high sentiment neutral materiality 0.40

First Interstate BancSystem: three directors retire per age policy; charter amended to plurality voting

FIRST INTERSTATE BANCSYSTEM INC

Machine-readable event card

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secwatch.filing_event.v1
accession
0000860413-26-000048
form_type
8-K
ticker
FIBK
cik
0000860413
company_name
FIRST INTERSTATE BANCSYSTEM INC
filed_at
2026-05-29T20:26:09+00:00
discovered_at
2026-05-29T20:27:31.396379+00:00
generated_at
2026-05-29T20:27:37.712986+00:00
sec_items
["5.02", "5.03", "5.07", "9.01"]
event_type
leadership
sentiment
neutral
materiality_score
0.4
calibrated_materiality_score
0.4
confidence
high
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https://secwatch.observer/filing/0000860413-26-000048.json
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https://secwatch.observer/filing/0000860413-26-000048.md
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https://secwatch.observer/filing/0000860413-26-000048.txt
edgar_index_url
https://www.sec.gov/Archives/edgar/data/860413/000086041326000048/0000860413-26-000048-index.htm
edgar_primary_document_url
https://www.sec.gov/Archives/edgar/data/860413/000086041326000048/fibk-20260527.htm
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deepseek-v4-flash:cloud@v2
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Executive movements

Machine-extracted from this filing. Every card cites the SEC source. See all recent executive movements.

Departed

Stephen M. Lacy

Director
FIBK · FIRST INTERSTATE BANCSYSTEM INC
Effective
2026-05-27
Filed
May 29, 2026, 4:26 PM ET
on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors
Departed

Patricia L. Moss

Director
FIBK · FIRST INTERSTATE BANCSYSTEM INC
Effective
2026-05-27
Filed
May 29, 2026, 4:26 PM ET
on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors
Departed

David L. Jahnke

Director
FIBK · FIRST INTERSTATE BANCSYSTEM INC
Effective
2026-05-27
Filed
May 29, 2026, 4:26 PM ET
on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors

Source-grounded claims

02ce51c4e4

Stephen M. Lacy retired as Director at FIRST INTERSTATE BANCSYSTEM INC.

on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors

SEC 8-K Item 5.02 confidence 0.95 SEC evidence

03c7ba0b83

Patricia L. Moss retired as Director at FIRST INTERSTATE BANCSYSTEM INC.

on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors

SEC 8-K Item 5.02 confidence 0.95 SEC evidence

5d0dcbd5e1

David L. Jahnke retired as Director at FIRST INTERSTATE BANCSYSTEM INC.

on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors

SEC 8-K Item 5.02 confidence 0.95 SEC evidence

Comparable filings

FRST

Primis Financial elects two new board members; Clagett and Kabbash depart

Primis Financial Corp. May 27, 2026, 5:19 PM ET leadership Items 5.02, 5.07, 9.01

same fact type: executive_change same SEC item: 5.02, 5.07, 9.01 same event type: leadership similar materiality

This filing

on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors

Comparable filing

directors Robert Y. Clagett and Charles A. Kabbash did not stand for re-election at the annual meeting of stockholders held on May 21, 2026

Filing page SEC filing

ALNY

Alnylam elects Benjamin F. Cravatt to board; shareholders re-elect directors and approve say-on-pay

ALNYLAM PHARMACEUTICALS, INC. May 27, 2026, 4:30 PM ET leadership Items 5.02, 5.07, 9.01

same fact type: executive_change same SEC item: 5.02, 5.07, 9.01 same event type: leadership similar materiality

This filing

on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors

Comparable filing

Effective as of June 1, 2026, the Board of Directors (the “Board”) of Alnylam Pharmaceuticals, Inc. (the “Company”), following the recommendation of its Nominating and Corporate Governance Committee, expanded the size of the Company’s Board from ten to eleven and elected Benjamin F. Cravatt, Ph.D. to fill the newly created vacancy.

Filing page SEC filing

VMI

Former CFO Thomas Liguori enters separation agreement; $4.9M retirement benefits

VALMONT INDUSTRIES INC June 1, 2026, 4:15 PM ET leadership Items 5.02, 9.01

same fact type: executive_change same SEC item: 5.02, 9.01 same event type: leadership similar materiality

This filing

on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors

Comparable filing

Valmont Industries Inc. previously reported the appointment of John Schwietz as Valmont’s Executive Vice President and Chief Financial Officer and Corporate Secretary, effective April 8, 2026, to succeed Thomas Liguori.

Filing page SEC filing

PSQH

PSQ Holdings SVP of People Michael Hebert resigns; severance of $137,500

PSQ Holdings, Inc. June 1, 2026, 4:02 PM ET leadership Items 5.02, 9.01

same fact type: executive_change same SEC item: 5.02, 9.01 same event type: leadership similar materiality

This filing

on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors

Comparable filing

On May 26, 2026, Michael Hebert resigned from his position of Senior Vice President of People of PSQ Holdings, Inc. (the “Company”), effective May 31, 2026.

Filing page SEC filing

FSBW

FS Bancorp names Matt Mullet CEO as planned; Joe Adams retires but stays on board

FS Bancorp, Inc. June 1, 2026, 11:31 AM ET leadership Items 5.02, 9.01

same fact type: executive_change same SEC item: 5.02, 9.01 same event type: leadership similar materiality

This filing

on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors

Comparable filing

it has named Matthew D. Mullet as Chief Executive Officer of the Company effective June 1, 2026

Filing page SEC filing

MED

Medifast Chief Legal Officer resigns; receives one-month severance of $35,648

MEDIFAST INC June 1, 2026, 8:59 AM ET leadership Items 5.02, 9.01

same fact type: executive_change same SEC item: 5.02, 9.01 same event type: leadership similar materiality

This filing

on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors

Comparable filing

Effective as of May 29, 2026, Jason L. Groves, Esq., the Chief Legal Officer & Corporate Secretary of Medifast, Inc. (the “Company”), tendered his resignation from the Company.

Filing page SEC filing

DY

Dycom board reduced to nine; two directors retire after annual meeting

DYCOM INDUSTRIES INC June 1, 2026, 8:04 AM ET leadership Items 5.02, 5.07

same fact type: executive_change same SEC item: 5.02, 5.07 same event type: leadership similar materiality

This filing

on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors

Comparable filing

Ms. Laurie J. Thomsen did not stand for election at the 2026 Annual Meeting of Shareholders held on May 28, 2026 (the “2026 Annual Meeting”) and retired from the Board effective at the conclusion of the 2026 Annual Meeting.

Filing page SEC filing

CG

Carlyle appoints Kate Heinzelman as General Counsel; Jeff Ferguson to be Senior Advisor

Carlyle Group Inc. June 1, 2026, 8:00 AM ET leadership Items 5.02, 7.01, 9.01

same fact type: executive_change same SEC item: 5.02, 9.01 same event type: leadership similar materiality

This filing

on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company’s Board of Directors

Comparable filing

Mr. Ferguson will become a Senior Advisor to Carlyle

Filing page SEC filing

Source: SEC EDGAR
accession 0000860413-26-000048

This headline and bullets were generated automatically by deepseek-v4-flash:cloud@v2 from the public filing. Read the source on SEC.gov before relying on any specific claim. Not investment advice. See methodology for how this pipeline works.