SXTP · 60 Degrees Pharmaceuticals, Inc.

Summary

60 Degrees Pharmaceuticals, Inc. disclosed on March 20, 2026, a correction to an error in its Prospectus Supplement dated March 13, 2026, stating an affiliate beneficially owns 23,367 shares of common stock instead of 21,490 shares (16,781 shares post 1-for-4 reverse stock split instead of 15,905 shares). The error originated from a Form 4 filed September 15, 2025, and no other information in the Prospectus Supplement is affected.

Key takeaways

• Affiliate beneficial ownership corrected from 21,490 shares to 23,367 shares
• Corrected total shares post 1-for-4 reverse stock split: 16,781 shares (previously 15,905)
• Error traced to Form 4 filed September 15, 2025, carried to December 16, 2025 Form 4 and Prospectus Supplement