8-K current report · filed Apr 27, 2026

Compass Therapeutics, Inc. (CMPX) 8-K Current Report: April 27, 2026

Item 7.01Item 8.01CMPX overview

Short answer

Compass Therapeutics, Inc. (CMPX) filed an 8-K current report with the SEC on April 27, 2026 reporting Item 7.01 (Regulation FD Disclosure), Item 8.01 (Other Events). Randomized Phase 2/3 BTC study data disclosed, potentially material to Compass Therapeutics’ clinical and valuation outlook.

Compass Therapeutics, Inc. 8-K event analysis

AI summary of each reported item and its exhibits

Item 7.01 · Regulation FD Disclosure

  • Randomized Phase 2/3 BTC study data disclosed, potentially material to Compass Therapeutics’ clinical and valuation outlook
  • Management webcast scheduled April 27, 2026 at 8:00 a.m. ET to review trial results
  • Full press release and presentation filed as Exhibits 99.1 and 99.2 for detailed efficacy and safety analysis

Item 8.01 · Other Events

  • COMPANION-002 met its ORR endpoint: 17.1% versus 5.3% for paclitaxel, including one complete response
  • Median PFS improved to 4.7 months versus 2.6 months, with HR 0.44 and p<0.0001
  • OS endpoint not met, largely confounded by 54% control-arm crossover to tovecimig
  • Crossover patients showed median OS 12.8 months versus 6.1 months for non-crossover patients
  • FDA discussions planned ahead of a BLA submission, but regulatory approval remains uncertain

Generated from the filing text and exhibits; verify against the original. What 8-K item codes mean

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