LMI Aerospace, Inc.
Case Number: 14-RC-378297
Date Filed: 01/06/2026
Status: Open
Location: Saint Charles, MO
Region Assigned: Region 14, Saint Louis, Missouri
Tally Issued Date:02/20/2026
Status:Open
No. of Eligible Voters:45
Void Ballots:1
Total Ballots Counted:43
Challenged Ballots:5
Votes for Labor Union:15
Tally Type:Initial
Ballot Type:Single Labor Organization
Unit ID:A
Votes Against:28
Challenges Determinative:No
Labor Union:International Association of Machinists and Aerospace Workers, AFL-CIO
Voting Unit (Unit A):All full-time and regular part-time production and maintenance employees, quality inspectors, CMM operators and programmers employed by the Employer at its 3030 N. Highway 94 and 3600 Mueller Road, St. Charles, Missouri facilities, but EXCLUDING all quality engineers, manufacturing engineers, office clerical, professional employees, guards and supervisors as defined by the Act and all other employees.
Union to Certify:International Association of Machinists and Aerospace Workers, AFL-CIO
Docket Activity
Date 
|
Document | Issued/Filed By |
|---|---|---|
| 02/20/2026 | Tally of Ballots* | NLRB - GC |
| 02/17/2026 | Notice of Election | NLRB - GC |
| 02/17/2026 | Stipulated Election Agreement* | NLRB - GC |
| 02/02/2026 | RD Order* | NLRB - GC |
| 01/14/2026 | Notice of Election | NLRB - GC |
| 01/14/2026 | Stipulated Election Agreement* | NLRB - GC |
| 01/06/2026 | Signed RC Petition* | Petitioner |
The Docket Activity list does not reflect all actions in this case.
* This document may require redactions before it can be viewed. To obtain a copy, please file a request through our FOIA Branch.
Related Documents
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Allegations
Allegations data is not available.
Participants
| Participant | Address | Phone |
|---|---|---|
| Employer Legal Representative Bierman, Jon Polsinelli P.C. |
7676 Forsyth Blvd. Ste. 800 St. Louis, MO 63105 |
(314)889-7045 |
| Employer Legal Representative Cavanagh, Lyndsay Polsinelli, PC |
150 N Riverside Plaza Ste 3000 Chicago, IL 60606-1599 |
(312)873-3667 |
| Employer Employer LMI Aerospace, Inc. |
St. Charles, MO 63301 |
(636)946-6525 |
| Petitioner Union International Association of Machinists and Aerospace Workers, AFL-CIO |
Upper Marlboro, MD 20772 |
(301)967-4750 |
| Employer Employer Sonaca |
St. Charles, MO 63301 |
(636)946-6525 |
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