SCHEDULE 13D/A

Design Therapeutics Inc

Common Stock · CUSIP: 25056L103

Event date: 2025-11-07

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Logos Global Management LPReported CIK 0001792126

  Shares: 3,240,000.00 · Class: 5.7%

• Logos Global Management GP LLC

  Shares: 3,240,000.00 · Class: 5.7%

• Logos Global Master Fund LPReported CIK 0001831371

  Shares: 2,240,000.00 · Class: 3.9%

• Logos GP LLC

  Shares: 2,240,000.00 · Class: 3.9%

• Arsani WilliamReported CIK 0001848372

  Shares: 3,255,000.00 · Class: 5.7%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.