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AI brief of an SEC Form 8-K · Lantheus (LNTH)

Lantheus CEO Brian Markison to retire; consulting role set for January to March 2026

Neutral Impact 4 of 5 leadership Written later

Lantheus disclosed that CEO Brian Markison is retiring under agreements dated November 6, 2025. He will receive base salary through December 31, 2025, and will then serve as an advisor from January 1 to March 31, 2026, at $83,333 per month, with the option to extend. The filing says his outstanding equity awards will keep vesting through his retirement date, which matters to shareholders because it defines the transition terms for the company's top executive.

Key points

  • CEO Brian Markison's retirement agreement and consulting agreement are both effective November 6, 2025.
  • Base salary continues through the retirement date of December 31, 2025.
  • Advisory fee is $83,333 per month for consulting from January 1, 2026 through March 31, 2026, with the option to extend.
  • A lump sum equal to his 2025 earned annual cash bonus, if any, will be paid within 60 days of the retirement date.

The filing

CompanyLantheus (LNTH)
Form8-K, current report
Filed with the SECNov 12, 2025, 4:30 PM ET
Accession number0001193125-25-277754

Items reported: 5.02 Director / Officer Change

Read the filing on SEC.gov ↗

Written by AI (Anthropic Claude, claude-haiku-5-5) on Nov 8, 2026, 12:57 AM ET, from the text of the filing and its press-release exhibits only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on November 12, 2025.

Briefs are written by AI from the filing text (each brief's own page names the model) and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the model's reading of the filing for shareholders, not a price forecast. Not investment advice.