8-K current report · filed Jun 15, 2026

Adaptive Biotechnologies Corp (ADPT) 8-K Current Report: June 15, 2026

Item 8.01Item EX-99.1ADPT overview

Short answer

Adaptive Biotechnologies Corp (ADPT) filed an 8-K current report with the SEC on June 15, 2026 reporting Item 8.01 (Other Events), Item EX-99.1 (Exhibit EX-99.1). Planned $250 million convertible senior notes due 2031, subject to market conditions and qualified institutional buyers.

Adaptive Biotechnologies Corp 8-K event analysis

AI summary of each reported item and its exhibits

Item 8.01 · Other Events

  • Planned $250 million convertible senior notes due 2031, subject to market conditions and qualified institutional buyers
  • Initial purchasers may buy up to an additional $37.5 million under a 13-day option
  • Proceeds coincide with planned separation of MRD and Immune Medicine businesses
  • Business separation introduces potential strategic and execution risk for shareholders

Item EX-99.1 · Exhibit EX-99.1

  • Proposed $250 million convertible senior notes due July 1, 2031, plus potential $37.5 million overallotment
  • Proceeds targeted for OrbiMed Purchase Agreement repayment, improving financial flexibility
  • Up to $25 million share repurchase could reduce dilution but may support the stock price and raise conversion pricing
  • Capped calls intended to offset conversion dilution, though protection ends above the capped-call price
  • Interest rate and conversion terms remain undetermined until pricing, creating execution and dilution uncertainty

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