Mike Gouker signed Mammoth Underground LLC's 2024 Form 5500 as plan administrator.
Signer names are public record from the Form 5500 e-signature.
Mammoth Underground LLC's EIN is 02-0646474.
Download the official 2024 Form 5500 (PDF) for Mammoth Underground LLC from the U.S. Department of Labor's EFAST2 system.
Download the official 2024 Form 5500 (PDF)Mammoth Underground LLC's plan includes health coverage, life insurance, dental coverage.
The Schedule of Assets is filed as a free-form PDF attachment on EFAST2; we parse these offline and coverage is partial (priority is the largest plans by EOY assets). This plan also reports no pooled (Schedule D) interests, so its holdings aren’t hidden on a master-trust filing. The line-item data lives on DOL EFAST2 under the same ACK_ID.
See Methodology > Data linkages for how Form 5500 / Schedule H / Schedule D / Schedule of Assets fit together.
