---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-21-222565"
form_type: "8-K"
ticker: "LNTH"
cik: "0001521036"
company_name: "Lantheus Holdings, Inc."
filed_at: "2021-07-23T23:59:59+00:00"
generated_at: "2026-06-30T02:55:56.883266+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# COO John Bolla resigns; Andrea Sabens named principal accounting officer at Lantheus

## Summary
- John Bolla resigns as Chief Operations Officer effective August 6, 2021 to pursue other opportunities.
- Resignation not due to any disagreement with the Company, board, or management.
- Search underway for next operations leader; no replacement named yet.
- Andrea Sabens, age 42, appointed principal accounting officer effective July 21, 2021.
- Sabens, a CPA with 20 years of experience, had served as VP Finance since joining Lantheus in 2009.

## SEC filing metadata
- accession: 0001193125-21-222565
- form_type: 8-K
- ticker: LNTH
- cik: 0001521036
- company_name: Lantheus Holdings, Inc.
- filed_at: 2021-07-23T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1521036/000119312521222565/0001193125-21-222565-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1521036/000119312521222565/d172337d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-21-222565
- JSON: https://secwatch.observer/filing/0001193125-21-222565.json
- Plain text: https://secwatch.observer/filing/0001193125-21-222565.txt

## Key facts
- Executive change
  John Bolla resigned as Chief Operations Officer at Lantheus Holdings, Inc..
  - Action: resigned
  - Role: Chief Operations Officer
  source text: On July 19, 2021, John Bolla informed Lantheus Holdings, Inc. (the “ Company”) of his intention to resign as the Chief Operations Officer of the Company and its subsidiaries, effective as of August 6, 2021 to pursue other opportunities.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1521036/000119312521222565/0001193125-21-222565-index.htm
- Executive change
  Andrea Sabens was appointed as principal accounting officer at Lantheus Holdings, Inc..
  - Action: appointed
  - Role: principal accounting officer
  source text: On July 21, 2021, the Board of Directors of the Company appointed Andrea Sabens as the principal accounting officer of the Company and its subsidiaries, effective July 21, 2021 (the “ Effective Date ”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1521036/000119312521222565/0001193125-21-222565-index.htm
- Executive change
  Robert J. Marshall, Jr. changed role as principal accounting officer at Lantheus Holdings, Inc..
  - Action: will no longer serve as
  - Role: principal accounting officer
  source text: Robert J. Marshall, Jr., the Company’s Chief Financial Officer and principal financial officer, will no longer serve as principal accounting officer of the Company as of the Effective Date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1521036/000119312521222565/0001193125-21-222565-index.htm

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