Tenable is trading 4.3% down now at $30.66 after announcing a proposed $650 million convertible senior-notes offering due 2031 on September 10, 2026, raising dilution concerns.

  • Investors are concerned the notes could increase future share dilution; planned capped-call transactions and a $200 million stock buyback may mitigate it.
  • Shares are falling even as major U.S. indexes rise, indicating company-specific pressure.
  • The offering was subsequently upsized to $725 million on September 11, 2026.