TENB ▼ -7.7% - Tenable Holdings, Inc. $TENB - Tenable Holdings, Inc. Announces Proposed Private Placement of $650.0 Million of Convertible Senior Notes Tenable Holdings announced a proposed private placement of $650 million in convertible senior notes, which sent shares down 7.7% as investors typically react negatively to dilutive offerings that increase the company's debt load and potential future share dilution. 10-SEP-2026 07:01 AM ET