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Debt Obligations
 12 Months Ended
Dec. 31, 2023
Debt Disclosure [Abstract]  
Debt Obligations DEBT OBLIGATIONS
Debt obligations consisted of the following (in thousands):
 December 31, 2023December 31, 2022
Revolving credit facility730,000 620,000 
Senior notes578,574 578,094 
Convertible notes444,420 256,903 
Other financing arrangements9,288 9,927 
Total debt obligations1,762,282 1,464,924 
Less: current portion(54,710)(639)
Total long term obligations, net$1,707,572 $1,464,285 
On August 14, 2023 the Company issued $400.0 million aggregate principal amount of Convertible Senior Notes due 2029 ("2023 Convertible Notes"). These notes were issued in a private offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the "1933 Act"). The 2023 Convertible Notes bear interest at a rate of 3.875% per year payable semi-annually in arrears on February 15 and August 15 each year, beginning February 15, 2024. The 2023 Convertible Notes mature on August 15, 2029, unless earlier purchased, redeemed or converted in accordance with their terms prior to such date. The 2023 Convertible Notes are unsecured indebtedness, subordinated to the Company's existing and future secured indebtedness and other liabilities, including trade payables.
Conversion of the 2023 Convertible Notes can only occur upon satisfaction of certain conditions and during certain periods, beginning any calendar quarter commencing after December 31, 2023 and thereafter, until the close of business on the second scheduled trading day immediately preceding the maturity date. The Company will settle the principal value of the notes in cash. The initial conversion rate is 31.2864 common shares per $1,000 principal amount of 2023 Convertible Notes (equivalent to an initial conversion price of approximately $31.28 per common share). If a “make-whole fundamental change” (as defined in the offering circular with the 2023 Convertible Notes) occurs, ATSG will, in certain circumstances, increase the conversion rate for a specified period of time. Upon the occurrence of certain fundamental changes, holders of the 2023 Convertible Notes can require the Company to
repurchase their notes for a cash repurchase price equal to the principal amount of the notes, plus any accrued and unpaid interest.
The Company used a portion of the proceeds from the 2023 Convertible Notes to repurchase 5,435,777 shares of its common stock concurrently with offering of the 2023 Convertible Notes. Additionally, the Company used a portion of the proceeds to repurchase $204.5 million principal amount of its outstanding 1.125% Convertible Senior Notes issued in 2017 (the “2017 Convertible Notes”). The Company used the remainder of the proceeds from the offering to satisfy fees and expenses associated with the offering, to repay a portion of the outstanding borrowings under its revolving credit facility and for general corporate purposes.
In addition, the Company is a party to a syndicated credit agreement (as amended, the "Senior Credit Agreement") which includes the ability to execute term loans and a revolving credit facility. On October 19, 2022, the Company amended the Senior Credit Agreement. This amendment i) increased the aggregate amount of the revolving credit facility from $800 million to $1 billion, ii) extended the maturity date of the agreement from April 6, 2026 to October 19, 2027, iii) replaced LIBOR with SOFR as an interest rate benchmark, iv) reduced the collateral to outstanding loan ratio to 1.15:1.00 from 1.25:1:00, v) permits cash dividends and share repurchases provided the secured leverage ratio is less than 3.00 to 1.00 and the total leverage ratio is less than 3.50 to 1.00, and removed the annual limitation on cash dividends and share repurchases which was $100 million.
The interest rate is a pricing premium added to SOFR based upon the Company's debt to its earnings before interest, taxes, depreciation and amortization expenses ("EBITDA") as defined under the Senior Credit Agreement. As of December 31, 2023, the unused revolving credit facility available to the Company at the trailing twelve-month EBITDA level was $358.5 million, and additional permitted indebtedness under the Senior Credit Agreement subject to compliance with other covenants.
On March 1, 2023, the Company entered into an additional revolving credit facility domiciled in Ireland (the "Irish Facility"). The terms and conditions of the Irish Facility are similar to the Senior Credit Agreement in the U.S. The Irish Facility has a maximum capacity of $100.0 million but has the ability to be upsized using the same accordion feature that is present in the Senior Credit Agreement. The maturity date of the Irish Facility is the same as the Senior Credit Agreement.
On January 28, 2020, the Company, through its CAM subsidiary, completed a debt offering of $500.0 million in senior unsecured notes (the “Senior Notes”) that were guaranteed by ATSG and certain of its other subsidiaries. The Senior Notes were sold only to qualified institutional buyers in the United States pursuant to Rule 144A under the Securities Act of 1933, as amended (the “1933 Act”), and certain investors pursuant to Regulation S under the Securities Act. The Senior Notes are senior unsecured obligations that bear interest at a fixed rate of 4.75% per year, payable semiannually in arrears on February 1 and August 1 of each year, beginning on August 1, 2020. The Senior Notes will mature on February 1, 2028. The Senior Notes contain customary events of default and certain covenants which are generally no more restrictive than those set forth in the Senior Credit Agreement. On April 13, 2021, the Company, through a subsidiary, completed its offering of $200.0 million of additional notes ("Additional Notes") under the existing Senior Notes. The Additional Notes are fully fungible with the Senior Notes, treated as a single class for all purposes under the indenture governing the existing notes with the same terms as those of the existing notes (other than issue date and issue price). The proceeds of $205.5 million, net of scheduled interest payable, were used, in conjunction with draws from the revolving credit facility to repay the unsubordinated term loans. Upon retirement of the unsubordinated term loans, the company expensed debt issuance costs of $6.5 million related to the unsubordinated term loans.
During 2022, the Company repurchased Senior Notes having a principal value of $120.0 million in the open market at a 5.5% reducing the Senior Notes carrying value to $578.0 million. The Company recognized a net pre-tax gain of $4.5 million, net of fees, which was recorded under net gain of financial instruments on the income statement during the corresponding period.
The balance of the Senior Notes is net of debt issuance costs of $4.3 million and $5.4 million as of December 31, 2023 and 2022, respectively. Under the terms of the Senior Credit Agreement, interest rates are adjusted at least quarterly based on the Company's EBITDA, its outstanding debt level and prevailing SOFR or prime rates. At the Company's debt-to-EBITDA ratio as December 31, 2023, the SOFR based financing for the revolving credit facility bear variable interest rates of 6.69%. The Senior Notes do not require principal payments until maturity but prepayments are allowed without penalty beginning February 1, 2025.
The Senior Credit Agreement is collateralized by certain of the Company's Boeing 777, 767 and 757 aircraft. Under the terms of the Senior Credit Agreement, the Company is required to maintain certain collateral coverage ratios set forth in the Senior Credit Agreement. The Senior Credit Agreement limits the amount of dividends the Company can pay and the amount of common stock it can repurchase to $100.0 million during any calendar year, provided the Company's total debt to EBITDA ratio is under 3.50 times and the secured debt to EBITDA ratio is under 3.0 times, after giving effect to the dividend or repurchase. The Senior Credit Agreement contains covenants, including a maximum permitted total EBITDA to debt ratio, a fixed charge covenant ratio requirement, limitations on certain additional indebtedness, and on guarantees of indebtedness. The Senior Credit Agreement stipulates events of default, including unspecified events that may have material adverse effects on the Company. If an event of default occurs, the Company may be forced to repay, renegotiate or replace the Senior Credit Agreement.
In September 2017, the Company issued $258.8 million aggregate principal amount of 1.125% Convertible Senior Notes due 2024 ("2017 Convertible Notes") in a private offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act. The 2017 Convertible Notes bear interest at a rate of 1.125% per year payable semi-annually in arrears on April 15 and October 15 each year, beginning April 15, 2018. The 2017 Convertible Notes mature on October 15, 2024, unless repurchased or converted in accordance with their terms prior to such date. The 2017 Convertible Notes are unsecured indebtedness, subordinated to the Company's existing and future secured indebtedness and other liabilities, including trade payables. Conversion of the 2017 Convertible Notes can only occur upon satisfaction of certain conditions and during certain periods, beginning any calendar quarter commencing after December 31, 2017 and thereafter, until the close of business on the second scheduled trading day immediately preceding the maturity date. Upon the occurrence of certain fundamental changes, holders of the 2017 Convertible Notes can require the Company to repurchase their notes at the cash repurchase price equal to the principal amount of the notes, plus any accrued and unpaid interest.
The 2017 Convertible Notes may be settled in cash, the Company’s common shares or a combination of cash and the Company’s common shares, at the Company’s election. The initial conversion rate is 31.3475 common shares per $1,000 principal amount of Convertible Notes (equivalent to an initial conversion price of approximately $31.90 per common share). If a “make-whole fundamental change” (as defined in the offering circular with the 2017 Convertible Notes) occurs, the Company will, in certain circumstances, increase the conversion rate for a specified period of time.
In conjunction with the 2017 Convertible Notes, the Company purchased convertible note hedges under privately negotiated transactions for $56.1 million, having the same number of the Company's common shares, 8.1 million shares and same strike price of $31.90, that underlie the 2017 Convertible Notes. The convertible note hedges are expected to reduce the potential equity dilution with respect to ATSG's common stock, and/or offset any cash payments in excess of the principal amount due, as the case may be, upon conversion of the 2017 Convertible Notes. The Company's current intent and policy is to settle all note conversions through a combination settlement which satisfies the principal amount of the 2017 Convertible Notes outstanding with cash.
The conversion feature of the 2017 Convertible Notes required bifurcation from the principal amount under the applicable accounting guidance. On January 1, 2022 the Company adopted ASU 2020-06 using the modified retrospective approach as discussed in Note A which recombined the value of the previously bifurcated embedded feature with the convertible note and eliminated the discount. The carrying value of the Company's convertible debt is shown below (in thousands):
2017 Convertible Notes2023 Convertible NotesTotal Convertible Notes
Principal Value December 31, 2022$258,750 $— $258,750 
Issuance of convertible debt— 400,000 400,000 
Repurchase of convertible debt(204,525)— (204,525)
Unamortized issuance cost(165)(9,640)(9,805)
Convertible Debt December 31, 2023$54,060 $390,360 $444,420 
In conjunction with the offering of the 2017 Convertible Notes, the Company also sold warrants to the convertible note hedge counterparties in separate, privately negotiated warrant transactions at a higher strike price and for the same number of the Company’s common shares, subject to customary anti-dilution adjustments.
On August 14, 2023, the Company repurchased outstanding 2017 Convertible Notes having a principal value of $204.5 million in the open market, reducing the 2017 Convertible Notes carrying value to $54.2 million. The Company recognized a net pre-tax gain of $1.3 million, net of fees, which was recorded under net gain of financial instruments on the income statement during the corresponding period. In conjunction with the repurchase of the 2017 Convertible Notes the Company settled a pro-rata portion of the related warrants and note hedges and received $1.3 million in net cash proceeds. As of December 31, 2023 these warrants could result in 1.7 million additional shares of ATSG's common stock, if the Company's traded market price exceeds the strike price which is $41.35 per share and is subject to certain adjustments under the terms of the warrant transactions.
The scheduled cash principal payments for the Company's debt obligations, as of December 31, 2023, for the next five years are as follows (in thousands):
Principal
Payments
2024$54,875 
2025661 
2026672 
2027730,686 
2028580,735 
2029 and beyond405,924 
Total principal cash payments1,773,553 
Less: unamortized issuance costs, premiums and discounts(11,271)
Total debt obligations$1,762,282