AST SpaceMobile Completes $1 Billion Convertible Notes Offering With 1.625% Interest Rate

Convertible Notes Structure and Terms

AST SpaceMobile completed the issuance of $1.0 billion in principal amount of 1.625% Convertible Senior Notes due 2034 on July 20, 2026. The notes were issued pursuant to an indenture dated the same date between the company and U.S. Bank Trust Company, National Association, serving as trustee. Interest accrues at 1.625% per year from the issuance date and will be paid semiannually in arrears on February 1 and August 1 of each year, with the first payment scheduled for February 1, 2027. The notes mature on February 1, 2034, unless earlier converted or repurchased in accordance with the indenture terms.

The offering includes a greenshoe option that grants initial purchasers the right to purchase an additional $150 million in principal amount of notes within a 13-day settlement period beginning on and including July 20, 2026. The notes issued on the completion date do not include any notes potentially purchased under this option. As general unsecured obligations of the company, the notes rank equally with other unsecured indebtedness but may rank below secured indebtedness and other obligations.

Conversion Rights and Pricing Mechanics

The conversion rate for the notes is initially set at 12.5672 shares of Class A Common Stock per $1,000 principal amount, translating to an initial conversion price of approximately $79.57 per share. The company disclosed that this conversion price represents a premium of approximately 20% above the last reported sale price of the Class A Common Stock on the Nasdaq Global Select Market on July 15, 2026. The conversion rate is subject to adjustment for certain events as specified in the indenture, though adjustments will not apply to accrued and unpaid interest.

Holders may convert their notes at their option under three distinct scenarios. First, during any calendar quarter commencing after the quarter ending December 31, 2026, conversion is available if the last reported sale price of Class A Common Stock equals or exceeds 130% of the conversion price for at least 20 trading days (consecutive or not) during a 30 consecutive trading day period ending on the last trading day of the immediately preceding calendar quarter. Second, conversion rights activate during the five business day period following any 10 consecutive trading day measurement period in which the trading price of the notes falls below 98% of the product of the Class A Common Stock price and the conversion rate. Third, holders may convert upon the occurrence of specified corporate events as detailed in the indenture.

Conversion Availability After November 2033

Beginning on November 1, 2033 and extending until the close of business on the second scheduled trading day immediately preceding the maturity date, holders gain unrestricted conversion rights. During this final pre-maturity period, noteholders may convert all or any portion of their notes at any time, in integral multiples of $1,000 principal amount, without regard to the conditions that previously restricted conversion eligibility. This provision ensures that holders approaching the maturity date have full flexibility to exercise their conversion rights regardless of stock price levels or other circumstances.

Following certain corporate events occurring prior to the maturity date, the company will, under specified circumstances, increase the conversion rate for holders who elect to convert their notes in connection with such corporate events. This anti-dilution mechanism protects noteholders' economic interests in scenarios involving significant corporate transactions, though the precise circumstances triggering these adjustments are defined in the indenture documentation.

Redemption Restrictions and Fundamental Change Provisions

The company disclosed that it may not redeem the notes prior to the maturity date, and no sinking fund has been established for the notes. This structure differs from some convertible offerings that include call provisions allowing issuers to redeem notes at specified prices and times. The absence of redemption rights provides holders with greater certainty regarding the notes' continued existence until conversion or maturity occurs.

If the company undergoes a "fundamental change" as defined in the indenture, holders may require the company to repurchase all or any portion of their notes at a repurchase price equal to 100% of the principal amount plus accrued and unpaid interest, calculated to but excluding the repurchase date. This provision is subject to certain conditions and exceptions as described in the indenture documentation. Such fundamental change repurchase rights provide noteholders with a liquidity option if significant changes occur to the company's business or control structure.

Events of Default and Covenant Structure

The indenture includes customary covenants and specifies events of default that would render the notes immediately due and payable. Among the enumerated events of default are: failure to pay interest within 30 days of due date; failure to pay principal at stated maturity or upon required repurchase or acceleration; failure to convert notes within five business days following a valid conversion notice; failure to provide fundamental change notice or corporate transaction notice within specified timeframes; and failure to comply with consolidation, merger, or asset sale obligations contained in the indenture.

Additional default triggers include the company's failure to comply with other indenture obligations for 60 days following written notice from the trustee or holders representing at least 25% in principal amount of outstanding notes. The indenture also includes a cross-default provision specifying that a default by the company or any significant subsidiary regarding any mortgage, agreement, or instrument securing indebtedness exceeding $50.0 million (or its foreign currency equivalent) in principal amount, if such indebtedness becomes due and payable prior to its stated maturity date or constitutes a breach, triggers an event of default under the convertible notes indenture.

Bankruptcy and Insolvency Events

The indenture specifies that certain bankruptcy or insolvency events involving the company constitute automatic events of default without further notice or action required. These provisions ensure that noteholders receive immediate protection through note acceleration if the company enters bankruptcy proceedings or becomes insolvent. The automatic nature of such defaults reflects standard protective mechanisms in convertible debt instruments, providing creditors with immediate remedies upon the company's financial distress.

The trustee and noteholders retain the right to declare all outstanding notes immediately due and payable upon the occurrence of any enumerated event of default, subject to notice and cure provisions where specified. This enforcement mechanism provides noteholders with significant leverage to protect their interests should the company encounter financial difficulties or breach material covenants under the indenture.

Use of Proceeds and Capital Structure Implications

The filing does not disclose specific information regarding the company's intended use of the $1.0 billion in gross proceeds from the convertible notes offering. Investors seeking to understand how AST SpaceMobile plans to allocate these proceeds should monitor subsequent company disclosures and investor presentations for guidance on capital allocation priorities. The proceeds may support satellite operations, network infrastructure development, or other strategic business initiatives, though these details were not provided in the current filing.

The addition of $1.0 billion in convertible debt affects the company's capital structure and leverage profile. The low 1.625% coupon rate reflects the embedded conversion option value, allowing the company to access capital at below-market fixed income rates while providing investors with equity upside if the stock price appreciates beyond the $79.57 conversion price. The maturity date of February 1, 2034 provides the company with nearly eight years to achieve operational milestones or refinance the obligation before repayment becomes due.

Conversion Option Value and Investor Considerations

The 20% premium of the conversion price to the July 15, 2026 stock price reflects customary terms for convertible offerings at the time of issuance. This premium creates an initial buffer where investors benefit from the fixed income yield and principal repayment obligation if the stock price declines or fails to appreciate substantially. However, if the company's stock price rises significantly above $79.57 per share, noteholders would have strong incentive to convert their notes into equity, capturing the appreciation in company value.

The immediate share price impact was not clear from available public information. The conversion ratio of 12.5672 shares per $1,000 principal amount means that if all notes were converted, approximately 12.567 million shares of Class A Common Stock would be issued (based on the $1.0 billion principal amount). This potential dilution should be considered alongside the capital raised and how management deploys these resources to grow enterprise value.