Note 3. Long-Term Debt

Note Agreement

On May 4, 2020, we entered into a Note Purchase and Private Shelf Agreement with PGIM, Inc. (“Prudential”) and certain affiliates and managed accounts of Prudential (as subsequently amended, the “Note Agreement”). The Note Agreement, which is uncommitted and subject to Prudential’s sole discretion, provides for the issuance of senior promissory notes with an aggregate principal amount of up to $350.0 million through March 22, 2026. On May 4, 2020, we issued $100.0 million aggregate principal amount of senior promissory notes (the “Series B Notes”). Borrowing availability under the Note Agreement is reduced by the outstanding amount of the existing Series B Notes, and all other senior promissory notes issued pursuant to the Note Agreement.

The Series B Notes bear interest at 3.10% per annum and mature on May 4, 2027, unless prepaid. The first three principal payments of $20.0 million each were paid in May of 2023, 2024 and 2025. The remaining $40.0 million will be paid in two equal annual installments of $20.0 million in May 2026 and May 2027. The Series B Notes are senior unsecured obligations and rank pari passu with borrowings under our third amended and restated credit agreement, dated March 22, 2023, with Wells Fargo Bank, National Association serving as administrative agent for the lenders (as subsequently amended on May 23, 2025, the “Credit Agreement”) or other senior promissory notes issued pursuant to the Note Agreement.

Credit Agreement

The Credit Agreement, which matures in March 2028, initially provided for a five-year, $250.0 million senior unsecured revolving line of credit and a $150.0 million accordion feature. On May 23, 2025, we exercised the accordion feature and entered into an amendment to the Credit Agreement to increase the total borrowing capacity from existing lenders by $150.0 million to an aggregate of $400.0 million. The Credit Agreement allows for up to $100.0 million to be utilized for letters of credit against the line of credit, which was unchanged by the amendment.

At our option, borrowings under the Credit Agreement bear interest at either: (i) the Secured Overnight Financing Rate (“SOFR”) plus the Term SOFR Adjustment, as defined in the Credit Agreement, equal to 0.100%, plus an applicable margin that ranges from 1.000% to 1.375%; or (ii) a Base Rate, as defined in the Credit Agreement, plus an applicable margin that ranges from 0.000% to 0.375%. The applicable margin for each of the foregoing options is dependent upon our consolidated debt to consolidated total capitalization ratio. Letter of credit fees equal to the applicable margin for SOFR loans are charged quarterly in arrears on the daily average aggregate stated amount of all letters of credit outstanding during the quarter. Commitment fees ranging from 0.090% to 0.175% (based upon our consolidated debt to total consolidated capitalization ratio) are charged quarterly in arrears on the aggregate unutilized portion of the Credit Agreement.

For periods covered under the Credit Agreement, the applicable margin on SOFR loans and letter of credit fees were 1.000% and commitment fees were 0.090%.

There were $38.2 million and $37.7 million of outstanding letters of credit at June 30, 2025 and December 31, 2024, respectively. As of June 30, 2025, we had $231.8 million of borrowing availability under the Credit Agreement after taking into account Credit Agreement borrowings and letters of credit.

General Debt Provisions

The Credit Agreement and Note Agreement contain customary covenants, including financial covenants that require us to observe a maximum ratio of debt to total capital and a minimum fixed charge coverage ratio. The Credit Agreement and Note Agreement also include a provision limiting our ability to make restricted payments, including dividends and payments for share repurchases, unless, among other conditions, no defaults or events of default are ongoing (or would be caused by such restricted payment).