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International Brotherhood of Boilermakers

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Contact

Mailing Address
Attn: Clinton Penny, Int'l Secretary-Treasurer 12200 N. Ambassador DriveKansas City, MO 64163

Officers 7

  • Timothy Simmons

    International President

  • Clinton Penny

    Int'l Secretary-Treasurer

  • Tom J. Baca

    Int'l Vice President

  • Jeffrey Campbell

    Int'l Vice President

  • John T. Fultz

    Int'l Vice President

  • Arnie Stadnick

    Int'l Vice President

  • Dan Sulivan

    Int'l Vice President

From the 2026 LM-2 report (opens in new tab)

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Federal Filing

Members Reported
43,594
Last Report
2026
Form
LM-2
File Number
74

Members as the union reported them on its 2026 LM-2 report. Counts may include retirees and associate members.

NLRB cases for International Brotherhood of Boilermakers Elections and unfair labor practice charges on LaborLab Search

Sources 2

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 Use Suggest an Edit above to tell us what's out of date.