---
schema_version: "secwatch.filing_event.v1"
accession: "0001171843-23-006872"
form_type: "8-K"
ticker: "PMDI"
cik: "0000806517"
company_name: "PSYCHEMEDICS CORP"
filed_at: "2023-11-08T23:59:59+00:00"
generated_at: "2026-06-08T12:10:29.790359+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Psychemedics VP of Lab Ops Michael Schaffer departs effective Nov 3, 2023

## Summary
- Michael Schaffer ceased as VP of Laboratory Operations and employment on Nov 3, 2023.
- No successor or reason for departure was disclosed in the filing.
- The company thanked Dr. Schaffer for his years of service.

## SEC filing metadata
- accession: 0001171843-23-006872
- form_type: 8-K
- ticker: PMDI
- cik: 0000806517
- company_name: PSYCHEMEDICS CORP
- filed_at: 2023-11-08T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/806517/000117184323006872/0001171843-23-006872-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/806517/000117184323006872/f8k_110723.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001171843-23-006872
- JSON: https://secwatch.observer/filing/0001171843-23-006872.json
- Plain text: https://secwatch.observer/filing/0001171843-23-006872.txt

## Key facts
- Executive change
  Michael Schaffer departed as Vice President of Laboratory Operations at PSYCHEMEDICS CORP.
  - Action: ceased serving
  - Role: Vice President of Laboratory Operations
  source text: Effective November 3, 2023, Michael Schaffer ceased serving as Vice President of Laboratory Operations of Psychemedics Corporation (the "Company") and is no longer employed by the Company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/806517/000117184323006872/0001171843-23-006872-index.htm

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