WD-40 is trading at $186.61, down 8.48% before the September 29, 2026 open; no direct catalyst has been established.

  • No new company-specific announcement explaining the decline was found. The latest listed company news is the September 3 CFO transition announcement, which predates this move.
  • Supplied pre-market indices are nearly flat, while the market context cites higher Treasury yields and oil prices.