8-K: Sky Harbour Secures $15M Note, Issues Shares to Yorkville

Sky Harbour Group Corporation's subsidiary secured a $15 million promissory note from Yorkville, accompanied by the issuance of 50,000 Class A common shares.

Summary

• Sky Harbour LLC, a subsidiary of Sky Harbour Group Corporation, issued a non-convertible, unsecured promissory note for $15 million to YA II PN, Ltd. (Yorkville) on December 8, 2025.
• The note carries an interest rate of 7.75% per annum, increasing to 18% upon an event of default, and matures on June 8, 2027.
• Repayments of $1,250,000 per month will commence on July 8, 2026, for twelve successive months.
• The parent company, Sky Harbour Group Corporation, guarantees the obligations under the promissory note.
• Proceeds from the note are designated for working capital and general corporate purposes.
• In connection with the note, Sky Harbour Group Corporation issued 50,000 shares of its Class A common stock to Yorkville on December 15, 2025, through a registered direct offering.

Sentiment

Score: 6

Explanation: The filing indicates a successful capital raise to support operations, which is positive for liquidity. However, the unsecured nature of the debt and the high default interest rate introduce some risk. The share issuance is minor dilution but part of the financing package.

Positives

• Secured $15 million in funding for working capital and general corporate purposes.
• The legal opinion confirms the validity of the 50,000 Class A common shares issued.

Negatives

• The promissory note is unsecured, potentially increasing risk for the lender and indicating a higher risk profile for the borrower.
• An 18% interest rate upon default is a significant penalty, highlighting potential financial stress if repayment terms are not met.
• Issuance of 50,000 shares to Yorkville could lead to minor dilution for existing shareholders, although the amount is relatively small.

Risks

• Default Risk: The promissory note includes an 18% interest rate upon an event of default, indicating significant financial penalties if the borrower fails to meet its obligations.
• Unsecured Debt: The $15 million promissory note is unsecured, meaning there is no collateral backing the debt, which could increase risk for the lender and potentially for the company if it struggles to repay.
• Dilution Risk: The issuance of 50,000 shares of Class A common stock to Yorkville, while small, represents a slight dilution for existing shareholders.

Future Outlook

The proceeds from the $15 million promissory note are intended for working capital and general corporate purposes, suggesting a focus on ongoing operations and potential growth initiatives. The structured repayment schedule indicates a clear plan for managing this new debt.

Management Comments

• The proceeds of the Yorkville Promissory Note may be used for working capital and general corporate purposes.

Industry Context

This financing activity suggests Sky Harbour Group Corporation is actively managing its capital structure to support its operations, likely within the specialized aviation infrastructure or FBO (Fixed-Base Operator) industry. The use of a promissory note and a registered direct offering indicates a need for capital that is being met through a combination of debt and equity, common for companies expanding or requiring operational liquidity. The interest rate on the note (7.75%) provides a benchmark for the company's cost of debt in the current market.

Comparison to Industry Standards

• The 7.75% interest rate on an unsecured promissory note could be considered moderate to high depending on the company's credit rating and prevailing market conditions for similar-sized companies in the aviation infrastructure sector. For instance, larger, more established aviation companies like Signature Aviation or Atlantic Aviation might secure lower rates due to stronger balance sheets and secured debt options.
• The issuance of 50,000 shares for a $15 million note implies a specific valuation context for the equity component, which would need to be compared against recent trading prices and industry-specific valuation multiples (e.g., EV/EBITDA for infrastructure assets) of peers like Universal Weather and Aviation or smaller regional FBO operators to assess its fairness.
• The structured repayment of $1.25 million monthly over 12 months starting in July 2026 suggests a clear cash flow expectation, which is a positive for debt management, but the unsecured nature and default interest rate of 18% are higher risk indicators compared to typical investment-grade corporate debt.

Stakeholder Impact

• Shareholders: Experience minor dilution due to the issuance of 50,000 Class A common shares. Benefit from improved company liquidity and funding for general corporate purposes.
• Creditors (Yorkville): Become a creditor with a $15 million unsecured promissory note, guaranteed by the parent company, and also receive 50,000 shares.
• Employees/Operations: Benefit from enhanced working capital, supporting ongoing operations and potential strategic initiatives.

Next Steps

• Commence monthly repayments of $1,250,000 on the Yorkville Promissory Note starting July 8, 2026.
• Continue utilizing the proceeds from the promissory note for working capital and general corporate purposes.

Key Dates

Recommendation

The company successfully secured $15 million in financing, which is a positive for liquidity and operational stability. However, the unsecured nature of the debt and the high default interest rate (18%) introduce a degree of risk. While the capital infusion supports ongoing operations, the terms of the debt suggest a potentially higher cost of capital or perceived risk by lenders. The minor share dilution is not a major concern. Given the balance of securing necessary funding against the terms of that funding, a "hold" recommendation is appropriate as investors should monitor the company's ability to utilize this capital effectively and manage its debt obligations without triggering the higher default interest rate.

Keywords

Sky Harbour Group Corporation, SKYH, Promissory Note, Debt Financing, Registered Direct Offering, Class A Common Stock, Yorkville, Working Capital, Corporate Finance, SEC Filing, 8-K