Contact
- Mailing Address
- Attn: Patrick Stefano, Treasurer Billings, MT 59107
- Phone
- (406) 670-4674 Rudy Mockel, President Listed on the 2025 LM-3 report (opens in new tab)
Officers 8
-
Rudy A. Mockel
President
-
Patrick O. Stefano
Treasurer
-
Tom L. Corbin
Vice President
-
Sarah R. Sollars
Secretary
-
Jacqueline Loyning
Trustee
-
Brad Peterson
Trustee
-
Steve Clark
SGT. at Arms
-
Deb K. Senn
Health Benefits Rep
An executive officer can send the current list.
Federal Filing
- Members Reported
- 103
- Last Report
- 2025
- Form
- LM-3
- File Number
- 84309
Members as the union reported them on its 2025 LM-3 report. Counts may include retirees and associate members.
Sources 2
- OLMS LM-3 report, 2025 (file no. 084-309) (opens in new tab)
Checked Oct 12, 2026
- OLMS filings for file no. 084-309, 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 Use Suggest an Edit above to tell us what's out of date.