---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-23-014648"
form_type: "8-K"
ticker: "CATX"
cik: "0000728387"
company_name: "Perspective Therapeutics, Inc."
filed_at: "2023-05-15T23:59:59+00:00"
generated_at: "2026-06-15T01:49:06.873664+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Perspective Therapeutics appoints Heidi Henson to board as Audit Committee Chair; McCormick resigns

## Summary
- Michael McCormick resigned from the Board effective immediately; departure described as amicable.
- Heidi Henson appointed as director effective June 1, 2023, to fill the vacancy; named Audit Committee Chair.
- Rob Williamson steps down as Audit Committee Chair but remains a member; becomes Compensation Committee Chair.
- Lori Woods steps down as Compensation Committee Chair but remains a member.
- Henson has over 25 years of finance experience, most recently CFO of Pardes Biosciences.

## SEC filing metadata
- accession: 0001437749-23-014648
- form_type: 8-K
- ticker: CATX
- cik: 0000728387
- company_name: Perspective Therapeutics, Inc.
- filed_at: 2023-05-15T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/728387/000143774923014648/0001437749-23-014648-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/728387/000143774923014648/isr20230512_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-23-014648
- JSON: https://secwatch.observer/filing/0001437749-23-014648.json
- Plain text: https://secwatch.observer/filing/0001437749-23-014648.txt

## Key facts
- Executive change
  Heidi Henson was appointed as Director at Perspective Therapeutics, Inc..
  - Action: appointed
  - Role: Director
  source text: Following Mr. McCormick’s resignation, effective as of June 1, 2023, the Board appointed Ms. Heidi Henson as a director of the Company to fill the vacant position on the Board and a member of the Audit (as Chairperson) and Compensation committees of the Board.
  evidence_url: https://www.sec.gov/Archives/edgar/data/728387/000143774923014648/0001437749-23-014648-index.htm
- Executive change
  Michael McCormick resigned as Director at Perspective Therapeutics, Inc..
  - Action: resigned
  - Role: Director
  source text: On May 9, 2023, Michael McCormick gave notice of his resignation from the Board of Directors of the Company (the “ Board ”), effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/728387/000143774923014648/0001437749-23-014648-index.htm

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