---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-23-016583"
form_type: "8-K"
ticker: "MNTS"
cik: "0001781162"
company_name: "Momentus Inc."
filed_at: "2023-04-05T23:59:59+00:00"
generated_at: "2026-06-17T05:57:57.561228+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Momentus appoints Eric R. Williams as CFO effective after Q1 2023 earnings call

## Summary
- Eric Williams named CFO; will assume role after Q1 2023 10-Q filing and next earnings call on May 11.
- Williams has 25+ years experience; previously CFO/COO at Rebus BioSystems, NovaSignal, Evidation Health.
- Interim CFO Dennis Mahoney will transition responsibilities to Williams.
- Base salary $375,000; target cash bonus 50% of base; eligible for RSUs equal to 1% of outstanding shares.
- Severance includes 6 months base salary, prorated annual bonus, and accelerated RSU vesting.

## SEC filing metadata
- accession: 0001140361-23-016583
- form_type: 8-K
- ticker: MNTS
- cik: 0001781162
- company_name: Momentus Inc.
- filed_at: 2023-04-05T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1781162/000114036123016583/0001140361-23-016583-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1781162/000114036123016583/brhc10050921_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-23-016583
- JSON: https://secwatch.observer/filing/0001140361-23-016583.json
- Plain text: https://secwatch.observer/filing/0001140361-23-016583.txt

## Key facts
- Executive change
  Eric R. Williams was appointed as Chief Financial Officer at Momentus Inc..
  - Action: appointed
  - Role: Chief Financial Officer
  source text: On April 5 , 2023, Momentus Inc. (the “Company”) announced the appointment of Eric R. Williams, age 58, as the Company’s next Chief Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1781162/000114036123016583/0001140361-23-016583-index.htm

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