8-K current report · filed Sep 10, 2026

Tarsus Pharmaceuticals, Inc. (TARS) 8-K Current Report: September 10, 2026

Item 2.01Item 8.01Item EX-99.1TARS overview

Short answer

Tarsus Pharmaceuticals, Inc. (TARS) filed an 8-K current report with the SEC on September 10, 2026 reporting Item 2.01 (Completion of Acquisition or Disposition of Assets), Item 8.01 (Other Events), Item EX-99.1 (Exhibit EX-99.1). Acquisition of Alkeus completed September 4, 2026, adding gildeuretinol through a wholly owned subsidiary.

Tarsus Pharmaceuticals, Inc. 8-K event analysis

AI summary of each reported item and its exhibits

Item 2.01 · Completion of Acquisition or Disposition of Assets

  • Acquisition of Alkeus completed September 4, 2026, adding gildeuretinol through a wholly owned subsidiary
  • Up-front consideration: $270M cash plus 2,908,692 Tarsus shares, subject to adjustments
  • Additional milestones up to $350M, including $250M upon U.S. regulatory approval and $100M upon first U.S. sale
  • Future revenue sharing in low-to-mid single digits of worldwide gildeuretinol net sales
  • Registration rights for certain Alkeus equityholders became effective at closing, creating potential future share-sale overhang

Item 8.01 · Other Events

  • Tarsus completed an acquisition on September 4, 2026
  • Transaction completion marks a material strategic change requiring review of Exhibit 99.1
  • Investors should assess the acquired asset, purchase consideration, and expected financial impact in the attached release

Item EX-99.1 · Exhibit EX-99.1

  • Acquisition of Alkeus completed, adding worldwide rights to Phase 3 gildeuretinol for Stargardt disease
  • Pipeline expands into rare retinal disease with no FDA-approved therapy and estimated 86,000 U.S. patients
  • NORTHSTAR Phase 3 topline data anticipated in 2029, extending the program’s key value catalyst
  • Gildeuretinol studied in more than 400 individuals and holds four FDA designations
  • Strategic shift strengthens Tarsus’ eye-care pipeline but adds substantial late-stage clinical and regulatory execution risk

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