Company · Ownership research

FIRST INTERSTATE BANCSYSTEM INC FIBK

CIK 0000860413

Form 4 transactions dated Sep 1, 2023 to Sep 26, 2026, as reported to the SEC.

Insider tradingInitial holdingsInstitutional holders
Insider filings on file run through 2026-07-28.
Some filings are submitted jointly by several insiders. The SEC form does not apportion the reported figures between them, so results include every joint filer.

Insider purchases & sales

Purchased
$347.72K
Sold
$65.06M

Sep 1, 2023 – Jul 28, 2026
Available records · partial months are marked ·

2023, from Sep 1, 20238 of 8 preview events
DateInsiderActivityTrade value (USD)% of prior holding

Showing 8 / 8 record groups in 2023. The complete set is available through the API.

FIRST INTERSTATE BANCSYSTEM INC · FIBK

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 8 of 8 purchase / sale groups and 5 of 5 other groups; the totals and the monthly series cover the whole window.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP.

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list_insider_transactions
{"ticker":"FIBK","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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MCP endpoint
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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.