---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-282759"
form_type: "8-K"
ticker: null
cik: "0001524741"
company_name: "U.S. SILICA HOLDINGS, INC."
filed_at: "2023-11-24T23:59:59+00:00"
generated_at: "2026-06-07T21:51:20.012014+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# CFO Donald A. Merril terminated without cause effective October 20, 2023; separation agreement signed November 17

## Summary
- Merril receives lump sum of $440,000 (annual base salary), plus 12 months COBRA continuation.
- Unvested time-based RSUs (totaling 47,067 shares) will vest within 30 days of execution.
- PSUs will vest on pro-rata basis based on actual performance for the full performance period.
- Vested stock options exercisable until 90 days after Oct 20 or original expiration.
- Merril released all claims and reaffirms non-compete/non-solicitation obligations.

## SEC filing metadata
- accession: 0001193125-23-282759
- form_type: 8-K
- cik: 0001524741
- company_name: U.S. SILICA HOLDINGS, INC.
- filed_at: 2023-11-24T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1524741/000119312523282759/0001193125-23-282759-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1524741/000119312523282759/d892389d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-282759
- JSON: https://secwatch.observer/filing/0001193125-23-282759.json
- Plain text: https://secwatch.observer/filing/0001193125-23-282759.txt

## Key facts
- Executive change
  Donald A. Merril departed as Executive Vice President and Chief Financial Officer at U.S. SILICA HOLDINGS, INC..
  - Action: terminated without cause
  - Role: Executive Vice President and Chief Financial Officer
  source text: Donald A. Merril, the Company’s Executive Vice President and Chief Financial Officer, was terminated without cause effective October 20, 2023
  evidence_url: https://www.sec.gov/Archives/edgar/data/1524741/000119312523282759/0001193125-23-282759-index.htm

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