---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-26-033135"
form_type: "8-K"
ticker: "MNTS"
cik: "0001781162"
company_name: "Momentus Inc."
filed_at: "2026-08-14T20:01:53+00:00"
generated_at: "2026-08-14T20:05:10.035717+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Momentus dismisses Frank Rimerman, appoints Baker Tilly as new auditor

## Summary
- Audit Committee dismissed Frank, Rimerman + Co. LLP effective Aug 11, 2026; no disagreements on accounting principles.
- Baker Tilly US, LLP appointed as new independent auditor; engagement agreement executed Aug 12, 2026.
- Frank Rimerman's 2024 report included going-concern explanatory paragraph; 2025 report was unqualified.
- Material weakness in internal controls for 2024 was remediated as of Dec 31, 2025, per 2025 Form 10-K.

## SEC filing metadata
- accession: 0001140361-26-033135
- form_type: 8-K
- ticker: MNTS
- cik: 0001781162
- company_name: Momentus Inc.
- filed_at: 2026-08-14T20:01:53+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1781162/000114036126033135/0001140361-26-033135-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1781162/000114036126033135/ny20080239x1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-26-033135
- JSON: https://secwatch.observer/filing/0001140361-26-033135.json
- Plain text: https://secwatch.observer/filing/0001140361-26-033135.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.