8-K current report · filed Sep 29, 2026

Phathom Pharmaceuticals, Inc. (PHAT) 8-K Current Report: September 29, 2026

Item 8.01PHAT overview

Short answer

Phathom Pharmaceuticals, Inc. (PHAT) filed an 8-K current report with the SEC on September 29, 2026 reporting Item 8.01 (Other Events). Phase 3 pHalcon-NERD-302 initiated patient screening for VOQUEZNA 10 mg as-needed treatment in non-erosive GERD.

Phathom Pharmaceuticals, Inc. 8-K event analysis

AI summary of each reported item and its exhibits

Item 8.01 · Other Events

  • Phase 3 pHalcon-NERD-302 initiated patient screening for VOQUEZNA 10 mg as-needed treatment in non-erosive GERD
  • Approximately 500 patients across 80 U.S. sites, randomized 1:1 against placebo for 24 weeks
  • Topline results expected in Q1 2028, creating a multi-year regulatory catalyst
  • Positive results could support a label-expansion submission for VOQUEZNA’s as-needed use
  • Key risks include enrollment delays, failed replication of Phase 2 results, inconclusive data, safety issues, and regulatory rejection

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