Contact
- Mailing Address
- Attn: Terrie Trettenbach, President 1341 Harrison AveButte, MT 59703
- Phone
- (406) 782-3266 Terrie L Trettenbach, President Listed on the 2025 LM-2 report (opens in new tab)
Officers 9
-
Terrie L. Trettenbach
President
-
Maria Ryan
Secretary-Treasurer
-
Leilani Hannifin
Vice President
-
Leticia Jacobson
Vice President
-
Tim Leader
Vice President
-
Seth Nicholson
Vice President
-
Anna Leighton
Vice President
-
Jamie Smith
Vice President
-
Kate Galt
Recording Secretary
An executive officer can send the current list.
Federal Filing
- Members Reported
- 1,600
- Last Report
- 2025
- Form
- LM-2
- File Number
- 547162
Members as the union reported them on its 2025 LM-2 report. Counts may include retirees and associate members.
NLRB cases for Local 1889 Elections and unfair labor practice charges on LaborLab Search
Sources 2
- OLMS LM-2 report, 2025 (file no. 547-162) (opens in new tab)
Checked Oct 12, 2026
- OLMS filings for file no. 547-162, labordata.bunkum.us (opens in new tab)
Checked Oct 12, 2026
Listings come from public filings with the U.S. Department of Labor and from the organizations' own websites, as of the dates under Sources. Details change, and we may have them wrong. Check with the organization before you rely on them. Use Suggest an Edit above to tell us what's out of date.