Tenable just put a convertible on the table. The underwrite is not the coupon. It is the dry powder.
On September 10 Tenable Holdings (Nasdaq: TENB) announced it intends to offer, subject to market conditions, $650.0 million aggregate principal amount of Convertible Senior Notes due 2031 in a Rule 144A private placement to QIBs. Initial purchasers get an option for up to an additional $65.0 million for 13 days from first issuance. Interest rate, conversion rate, and other terms price later. The notes are general senior unsecured obligations; interest pays semiannually. On conversion, Tenable will pay cash up to principal and may settle the remainder in cash, stock, or a mix at its election. Source: the IR release, not a rumor desk.
Use of proceeds is the real slide. Net proceeds are earmarked (i) to pay the cost of privately negotiated capped call transactions, (ii) to repurchase up to $200.0 million of common stock concurrently with pricing, (iii) to repay in full the term loans under Tenable’s senior secured credit facility, and (iv) for general corporate purposes — which the company explicitly says may include additional share repurchases, acquisitions or strategic investments in complementary businesses or technologies, working capital, opex, capex, and G&A. After closing, Tenable intends to enter a new senior secured revolving credit facility — with no assurance on terms or that it closes. If the greenshoe prints, more capped calls first; remainder to G&A uses.
Mechanics matter for dilution optics. Concurrently with pricing, Tenable expects capped calls with option counterparties covering the shares initially underlying the notes — designed generally to reduce potential dilution and/or offset cash payments above principal, subject to a cap. Concurrent buybacks of up to $200 million are expected in privately negotiated trades through an initial purchaser or affiliate, at a purchase price equal to the last reported Nasdaq sale price on the pricing date. That can push the effective conversion price higher. Further buybacks may continue under the previously authorized repurchase program. Classic convert stack: raise, hedge, buy back, refinance secured term loans, keep M&A optionality.
POV: exposure management is in a platform war — CNAPP, ASM, identity-adjacent attack-path, and now frontier-model “adversary view” product narratives. A $650M convert with up to $200M buyback and an explicit acquisitions line is not a distress print. It is a capital-structure reset that swaps secured term debt for unsecured convert capacity and leaves room for tuck-ins. Deal pipeline: Undisclosed. Do underwrite the optionality the release actually printed: refinance + buyback + “acquisitions or strategic investments.” Interest rate and conversion premium are still TBD at pricing — so the multiple is not underwriteable until the pricing 8-K lands. Question the greenshoe and the revolver. Source: Columbia, Sept. 10.
Underwrite sheet — sourced only: $650.0M Convertible Senior Notes due 2031; +$65.0M option (13 days); Rule 144A QIBs; senior unsecured; cash up to principal on conversion, remainder cash/stock/mix at election; proceeds = capped calls + up to $200.0M concurrent repurchase + repay term loans in full + G&A which may include acquisitions/strategic investments; intended new senior secured revolver (no assurance); capped calls to reduce dilution / offset excess cash, subject to a cap; buyback price = last reported Nasdaq sale on pricing date (Tenable IR, Sept. 10, 2026). No coupon or conversion rate until pricing. The war chest is the story. The coupon is a footnote.