---
type: "Bill"
title: "Expand livestock loss eligibility to include domestic bison"
description: "Expand livestock loss eligibility to include domestic bison"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "HB 504"
citation: "Montana HB 504 (2025)"
classification: ["bill"]
subjects: ["Agriculture", "Livestock", "Rule Making"]
status: "enacted"
primary_sponsors: ["Eric Tilleman"]
version_count: 35
action_count: 50
vote_count: 9
first_action: "2024-12-17T17:28:14+00:00"
last_action: "2025-05-05T16:39:32+00:00"
source: "openstates"
source_identifier: "ocd-bill/3f516af0-b677-4a25-aaa2-e216dbfc930b"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC2854?open_tab=sum"
source_hash: "2f8bc97d7b3ea4af816cb4cd005c79a3f8a299dd12f87da2fbae4402a2185804"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-mt"]
---

# Montana HB 504 (2025) — Expand livestock loss eligibility to include domestic bison

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **HB0504.001.001_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=295772)
2. **HB0504.001.001_Amendments-in-Context_final-not condensed.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=295771)
3. **HB0504_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=282537)
4. **HB0504_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=291817)
5. **HB0504_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=302385)
6. **HB0504_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304493)
7. **HB0504_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304494)
8. **HB0504_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304495)
9. **HB0504_1(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304496)
10. **HB0504_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=282196)
11. **HB0504_2(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304498)
12. **HB0504_2(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311228)
13. **HB0504_2(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304499)
14. **HB0504_2(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304530)
15. **HB0504_2(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304531)
16. **HB0504_2(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304532)
17. **HB0504_2(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304617)
18. **HB0504_2(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=306724)
19. **HB0504_2(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307243)
20. **HB0504_2(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311227)
21. **HB0504_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304497)
22. **HB0504_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311230)
23. **HB0504_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324683)
24. **HB0504_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=326690)
25. **HB0504_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=327738)
26. **HB0504_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311231)
27. **HB0504_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311458)
28. **HB0504_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311459)
29. **HB0504_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=317014)
30. **HB0504_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320582)
31. **HB0504_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321562)
32. **HB0504_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321563)
33. **HB0504_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321564)
34. **HB0504_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311229)
35. **LC2854.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=280750)

## Votes

- Do Concur — **97–3** (pass) · lower
- Do Pass — **98–0** (pass) · lower
- Do Concur — **44–4** (pass) · upper
- be_concurred_in — **11–0** (pass) · upper
- Do Pass — **99–1** (pass) · lower
- Do Concur — **47–3** (pass) · upper
- Do Concur — **97–0** (pass) · lower
- be_concurred_in_as_amended — **11–0** (pass) · upper
- do_pass — **17–0** (pass) · lower

## Sponsors

- Eric Tilleman — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2024-12-17T17:28:14+00:00** (LC) Drafter Assigned
- **2025-01-06T21:35:06+00:00** (LC) Draft On Hold
- **2025-02-07T16:19:23+00:00** (LC) Draft Taken Off Hold
- **2025-02-07T16:19:36+00:00** (LC) Draft Taken Off Hold
- **2025-02-07T22:58:15+00:00** (LC) Draft in Legal Review
- **2025-02-08T23:20:01+00:00** (LC) Draft in Edit
- **2025-02-11T16:19:51+00:00** (LC) Draft in Input/Proofing
- **2025-02-11T18:06:42+00:00** (LC) Draft in Final Drafter Review
- **2025-02-11T18:26:30+00:00** (LC) Draft in Assembly
- **2025-02-12T16:07:49+00:00** (LC) Draft Ready for Delivery
- **2025-02-13T22:11:12+00:00** (LC) Draft Delivered to Requester
- **2025-02-13T22:12:00+00:00** (H) Introduced
- **2025-02-13T22:15:20+00:00** (H) Fiscal Note Requested
- **2025-02-14T16:40:16+00:00** (H) Referred to Committee - (H) Agriculture `referral-committee`
- **2025-02-14T19:50:59+00:00** (H) First Reading `reading-1`
- **2025-02-20T21:26:16+00:00** (H) Fiscal Note Received `receipt`
- **2025-02-20T21:45:49+00:00** (H) Fiscal Note Signed
- **2025-02-21T14:55:00+00:00** (H) Fiscal Note Printed
- **2025-02-21T21:13:37+00:00** (H) Hearing - (H) Agriculture
- **2025-02-26T00:22:03+00:00** (H) Committee Executive Action--Bill Passed - (H) Agriculture `committee-passage`
- **2025-02-26T20:24:00+00:00** (H) Committee Report--Bill Passed - (H) Agriculture `committee-passage`
- **2025-03-01T21:58:00+00:00** (H) 2nd Reading Passed `reading-2, reading-2`
- **2025-03-03T22:06:00+00:00** (H) 3rd Reading Passed `passage, reading-3`
- **2025-03-03T23:19:19+00:00** (H) Transmitted to Senate
- **2025-03-04T20:29:13+00:00** (S) First Reading `reading-1`
- **2025-03-05T00:54:48+00:00** (S) Referred to Committee - (S) Agriculture, Livestock and Irrigation `referral-committee`
- **2025-03-14T17:13:44+00:00** (S) Hearing - (S) Agriculture, Livestock and Irrigation
- **2025-03-14T20:38:20+00:00** (S) Hearing Canceled - (S) Agriculture, Livestock and Irrigation
- **2025-03-14T20:38:43+00:00** (S) Hearing - (S) Agriculture, Livestock and Irrigation
- **2025-04-01T21:28:13+00:00** (S) Committee Executive Action--Bill Concurred - (S) Agriculture, Livestock and Irrigation
- **2025-04-02T19:42:00+00:00** (S) Committee Report--Bill Concurred - (S) Agriculture, Livestock and Irrigation
- **2025-04-02T22:53:01+00:00** (S) Rereferred to Committee - (S) Agriculture, Livestock and Irrigation `referral-committee, referral-committee`
- **2025-04-03T23:32:13+00:00** (S) Committee Executive Action--Bill Concurred as Amended - (S) Agriculture, Livestock and Irrigation
- **2025-04-04T01:44:00+00:00** (S) Committee Report--Bill Concurred as Amended - (S) Agriculture, Livestock and Irrigation
- **2025-04-07T19:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-04-07T20:00:00+00:00** (S) 2nd Reading Concurred `reading-2, reading-2`
- **2025-04-08T19:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-04-08T20:41:00+00:00** (S) 3rd Reading Concurred `passage, reading-3`
- **2025-04-08T21:47:28+00:00** (S) Returned to House with Amendments
- **2025-04-14T19:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-04-14T20:33:00+00:00** (H) 2nd Reading Senate Amendments Concurred `amendment-amendment, amendment-passage, reading-2, reading-2`
- **2025-04-15T19:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-04-15T20:38:00+00:00** (H) 3rd Reading Passed as Amended by Senate `passage, passage, reading-3, reading-3`
- **2025-04-15T22:11:56+00:00** (H) Sent to Enrolling
- **2025-04-16T04:46:15+00:00** (H) Returned from Enrolling
- **2025-04-18T20:50:00+00:00** (H) Signed by Speaker `passage`
- **2025-04-22T13:30:24+00:00** (S) Signed by President `passage`
- **2025-04-22T18:10:24+00:00** (H) Transmitted to Governor `executive-receipt`
- **2025-05-01T21:14:29+00:00** (H) Signed by Governor `executive-signature`
- **2025-05-05T16:39:32+00:00** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/3f516af0-b677-4a25-aaa2-e216dbfc930b`. Confidence: reported (aggregated from official Montana legislature records).