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Long-Term Debt | 12 Months Ended
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Dec. 31, 2024
Debt Disclosure [Abstract] |
Long-Term Debt | 6. LONG-TERM DEBT Long-term debt at December 31, 2024 and 2023 were as follows:
|  | 2024 |  |  | 2023 |
Revolving credit facility |  | $ | 35,000 |  |  | $ | 90,000 |
Second lien credit agreement |  |  | 90,597 |  |  |  | — |
2029 Notes |  |  | 322,619 |  |  |  | 322,070 |
Total |  | $ | 448,216 |  |  | $ | 412,070 |
Second lien credit agreement On April 24, 2024, the Company, Great Lakes Dredge & Dock Company, LLC, NASDI Holdings, LLC, Great Lakes Environmental & Infrastructure Solutions, LLC, Great Lakes U.S. Fleet Management, LLC, and Drews Services LLC (collectively, the “Credit Parties”) entered into a $150.0 million second lien credit agreement (as amended, supplemented or otherwise modified from time to time, the “Second Lien Credit Agreement”) with Guggenheim Corporate Funding, LLC, on behalf of one or more clients, as the lender, and Guggenheim Credit Services, LLC as Administrative Agent, Collateral Agent and Lead Arranger (“GCS”). The material terms of the Second Lien Credit Agreement are summarized below. The Second Lien Credit Agreement provides for (i) a senior secured second-lien term loan facility in an aggregate principal amount of $100.0 million, which was funded in full on the initial closing date (the “Closing Date”) and (ii) a senior secured second-lien delayed draw term loan facility in the aggregate principal amount up to $50.0 million, which is available to the Company for a period of 12 months following the Closing Date, subject to the terms and conditions as set forth therein. Net proceeds to the Company, after payment of original discount on the initial loans, a closing fee on the delayed draw facility and other debt issuance costs, including those associated with the ABL Amendment described below, were approximately $88.7 million. The Second Lien Credit Agreement contains customary representations, mandatory prepayments and affirmative and negative covenants, including a minimum liquidity covenant that requires the Credit Parties to maintain consolidated liquidity of (a) $12.5 million at any time the fixed charge coverage ratio for the most recently ended four fiscal quarter period is less than 1.10 to 1.00 and (b) $50.0 million at any time the fixed charge coverage ratio for the most recently ended four fiscal quarters is greater than or equal to 1.10 to 1.00. For the first 18 months following the Closing Date, the Company may prepay all or a part of the loans under the Second Lien Credit Agreement by paying the principal amount of the loans to be prepaid plus a customary “make-whole” premium, subject to a make-whole carveout of up to $25.0 million (less the amount of any undrawn delayed draw term loan commitments at such time) at 103% with proceeds from a qualifying Maritime Administration (“MARAD”) financing. Thereafter, the Company may prepay all or a part of the loans under the Second Lien Credit Agreement by paying, (i) in months 19-30 following the Closing Date, 103% of the principal amount of the loans to be prepaid, plus accrued and unpaid interest and (ii) in months 31 to 42 after the Closing Date, 101% of the principal amount of loans to be prepaid, plus accrued and unpaid interest. The Second Lien Credit Agreement also contains customary events of default (including non-payment of principal or interest on any material debt and breaches of covenants) as well as events of default relating to certain actions by the Company’s surety bonding providers. The obligations of the Credit Parties under the Second Lien Credit Agreement are unconditionally guaranteed, on a joint and several basis, by each borrower (other than the Company) and subsidiary guarantor under the ABL Credit Agreement (as defined below), each existing or future issuer or guarantor under the indenture governing the Company’s 5.25% Senior Notes due 2029, and each other existing and subsequently acquired or formed material direct or indirect wholly-owned domestic subsidiary of the Company. The loans under the Second Lien Credit Agreement funded on the Closing Date were used to repay amounts outstanding under the ABL Credit Agreement, to pay fees and expenses associated with the transactions and for general corporate purposes, including to fund upcoming new build payments. The delayed draw portion of the term loans, if funded, will be used to fund future new build payments, ongoing working capital and for other general corporate purposes. The Second Lien Credit Agreement matures on the earlier of April 24, 2029 and the date that is ninety-one (91) days prior to the scheduled maturity date of the Company’s 5.25% Senior Notes due 2029. The obligations under the Second Lien Credit Agreement are secured on a second-priority basis by substantially all of the assets of the Credit Parties. The outstanding obligations thereunder shall be secured by a valid second priority perfected lien on substantially all of the U.S. flagged and located vessels of the Credit Parties and a valid perfected lien on all domestic accounts receivable and substantially all other assets of the Credit Parties, subject to the permitted liens and interests of other parties (including the Company’s surety bonding providers). Pursuant to the terms of that certain Intercreditor Agreement dated as of April 24, 2024, (as amended, restated, supplemented, or otherwise modified from time to time, the “Intercreditor Agreement”), by and between PNC Bank, National Association, as first lien agent, and GCS, as second lien agent, the obligations under the Second Lien Credit Agreement are subordinated to the first-priority liens securing the obligations under the ABL Credit Agreement described below. Interest on the term loan facility under the Second Lien Credit Agreement is equal to either a base rate option (“Base Rate Loan”) or a Secured Overnight Financing Rate (“SOFR”) option (“Term SOFR Loan”) at the Company’s election. In the case of a Base Rate Loan, interest on the unpaid principal amount shall equal (i) the greatest of (a) the “Prime Rate” in the United States as quoted from time to time by The Wall Street Journal or the highest per annum rate of interest published by the Federal Reserve Board, (b) the federal funds effective rate (but not less than zero) plus 0.50% and (c) Term SOFR for a one-month interest period on such day, plus 1.00%, plus (ii) 6.75%. In the case of a Term SOFR Loan, interest on the unpaid principal amount shall equal the Term SOFR Reference Rate on the day that is two business days prior to the first day of such applicable interest period, plus 7.75%. In addition, the Company is required to pay a quarterly fee of 1.00% per annum on the undrawn commitments in respect of the delayed draw term loan facility. The Company had $100.0 million borrowings on the Second Lien Credit Agreement as of December 31, 2024. The interest rate on the Second Lien Credit Agreement borrowings as of December 31, 2024 is 12.09%. Credit agreement On April 24, 2024, the Credit Parties, PNC Bank, National Association (“PNC”), as agent for the lenders, and certain financial institutions party thereto entered into an amendment to the ABL Credit Agreement described below (the “ABL Amendment”). The ABL Amendment (w) eliminates the Company’s ability to increase the commitments under the senior secured revolving credit facility (x) modifies the pricing of loans and undrawn commitments as summarized below, (y) adds a minimum liquidity covenant, for so long as the Second Lien Credit Agreement has not been prepaid and terminated, that requires the Credit Parties to maintain consolidated liquidity of (a) $12.5 million at any time the fixed charge coverage ratio for the most recently ended four fiscal quarter period is less than 1.10 to 1.00 and (b) $50.0 million at any time the fixed charge coverage ratio for the most recently ended four fiscal quarters is greater than or equal to 1.10 to 1.00 and (z) makes certain other customary changes in connection with the Credit Parties’ entry into the Second Lien Credit Agreement. The Company has availability of up to $200.0 million for the issuance of letters of credit under the ABL Amendment. The ABL Amendment modifies the Applicable Margin for Advances as follows: (i) following the ABL Amendment closing date through and including the date immediately prior to the date on which the Borrowing Base Certificate is required to be delivered for most recently completed fiscal quarter (commencing with the fiscal quarter ending on September 30, 2024) (the “Adjustment Date”), (a) the Applicable Margin for Domestic Rate Loans Advances is 1.50% and (b) the Applicable Margins for Term SOFR Rate Loans Advances is 2.50%, (ii) beginning as of the Adjustment Date, to the extent the quarterly average undrawn availability for the prior fiscal quarter is (x) greater than 66.7% of the Maximum Revolving Advance Amount, (a) the Applicable Margin for Domestic Rate Loans Advances is 1.25% and (b) the Applicable Margins for Term SOFR Rate Loans Advances is 2.25%; (y) to the extent the quarterly average undrawn availability for the prior fiscal quarter is less than or equal to 66.7% of the Maximum Revolving Advance Amount but greater than 33.3%, (a) the Applicable Margin for Domestic Rate Loans Advances is 1.50% and (b) the Applicable Margins for Term SOFR Rate Loans Advances is 2.50%; and (z) to the extent the quarterly average undrawn availability for the prior fiscal quarter is less than or equal to 33.3% of the Maximum Revolving Advance Amount, (a) Applicable Margin for Domestic Rate Loans Advances is 1.75% and (b) the Applicable Margin for Term SOFR Rate Loans Advances is 2.75%. Additionally, the Company has an option to borrow at Green Loan Advance Rates, each of which will be 0.05% lower than the corresponding applicable rate if the Company certifies that it will use such proceeds to invest in renewable energy and clean transportation projects and it complies with green loan principles. On July 29, 2022, the Credit Parties entered into a second amended and restated revolving credit and security agreement (as amended by the ABL Amendment and as may be further amended, supplemented or otherwise modified from time to time, the “ABL Credit Agreement”) with certain financial institutions from time to time party thereto as lenders, PNC Bank, National Association, as Agent (the “Agent”), PNC Capital Markets, CIBC Bank USA, Bank of America, N.A. and Truist Securities, Inc., as Joint Lead Arrangers and Joint Bookrunners, CIBC Bank USA and Truist Bank as Co-Syndication Agents, Bank of America, N.A., as Documentation Agent and PNC Bank National Association, as Green Loan Coordinator. The ABL Credit Agreement amends and restates the prior ABL Credit Agreement dated as of May 3, 2019 by and among the financial institutions from time to time party thereto as lenders, the Agent and the Credit Parties party thereto such that the terms and conditions of the prior credit agreement have been subsumed and replaced in their entirety by the terms and conditions of the ABL Credit Agreement, including the amount available under the revolving credit facility. The terms of the ABL Credit Agreement are summarized below. The ABL Credit Agreement provides for a senior secured revolving credit facility in an aggregate principal amount of up to $300.0 million. The maximum borrowing capacity under the ABL Credit Agreement is determined by a formula and may fluctuate depending on the value of the collateral included in such formula at the time of determination. The ABL Credit Agreement contains a green loan option where the Company can borrow at the lower interest rates described below so long as such funds are used to fund capital investments related to renewable energy and clean transportation projects and are consistent with green loan principles. The green loan option is subject to a $35.0 million sublimit. The ABL Credit Agreement contains customary representations and affirmative and negative covenants, including a springing financial covenant that requires the Credit Parties to maintain a fixed charge coverage ratio (ratio of earnings before income taxes, depreciation and amortization, net interest expenses, non-cash charges and losses and certain other non-recurring charges, minus capital expenditures, income and franchise taxes, to net cash interest expense plus scheduled cash principal payments with respect to debt plus restricted payments paid in cash) of not less than 1.10 to 1.00. The springing financial covenant is triggered when the undrawn availability of the ABL Credit Agreement is less than 12.5% of the maximum loan amount for five consecutive days. The ABL Credit Agreement also contains customary events of default (including non-payment of principal or interest on any material debt and breaches of covenants) as well as events of default relating to certain actions by the Company’s surety bonding providers. The obligations of the Credit Parties under the ABL Credit Agreement are unconditionally guaranteed, on a joint and several basis, by each existing and subsequently acquired or formed material direct and indirect domestic subsidiary of the Company. Borrowings under the ABL Credit Agreement will be used to pay fees and expenses related to the ABL Credit Agreement, finance acquisitions permitted under the ABL Credit Agreement, finance ongoing working capital, for other general corporate purposes, and with respect to any green loan, fund capital investments related to renewable energy and clean transportation projects. The ABL Credit Agreement matures on the earlier of July 29, 2027 or the date that is ninety-one (91) days prior to the scheduled maturity date of the Company’s unsecured senior notes, which is currently June 1, 2029, if the Company fails to refinance its unsecured senior notes prior to their scheduled maturity date but only if such scheduled maturity date is prior to the maturity date of the ABL Credit Agreement. The obligations under the ABL Credit Agreement are secured by substantially all of the assets of the Credit Parties. The outstanding obligations thereunder shall be secured by a valid first priority perfected lien on substantially all of the U.S. flagged and located vessels of the Credit Parties and a valid perfected lien on all domestic accounts receivable and substantially all other assets of the Credit Parties, subject to the permitted liens and interests of other parties (including the Company’s surety bonding providers). The Company had $35.0 million and $90.0 million borrowings on the revolver as of December 31, 2024 and 2023, respectively. There were $43.5 million and $49.8 million of letters of credit outstanding as of December 31, 2024 and 2023, respectively. The Company had $221.2 million and $122.3 million of net availability under the ABL Amendment as of December 31, 2024 and 2023, respectively. The availability under the ABL Amendment was suppressed by $0.3 million and $37.9 million as of December 31, 2024 and 2023, respectively, as a result of certain limitations of borrowing related to reserves and compliance with the Company's obligations set forth in the ABL Credit Agreement or the prior credit agreement. Based on the aforementioned variable interest rate components, the weighted average interest rate on the revolver borrowings is 6.70% and 6.71% as of December 31, 2024 and 2023, respectively. Senior notes and subsidiary guarantors In May 2021, the Company sold $325.0 million of unsecured 5.25% Senior Notes (the “2029 Notes”) pursuant to a private offering. The 2029 Notes were priced to investors at par and will mature on June 1, 2029. The Company used the net proceeds from the offering, together with cash on hand, to redeem all $325.0 million aggregate principal amount of its outstanding 8.00% Senior Notes due 2022. The Company’s obligations under these 2029 Notes are guaranteed by each of the Company’s existing and future 100% owned domestic subsidiaries that are co-borrowers or guarantors under the ABL Credit Agreement. Such guarantees are full, unconditional and joint and several. The parent company issuer has no independent assets or operations and all non-guarantor subsidiaries have been determined to be minor. The weighted average interest rate on the Company’s total outstanding borrowings, after adjusting for the effects of interest rate swaps, was 6.77%, and 5.57% as of December 31, 2024 and 2023, respectively. Other The scheduled principal payments through the maturity date of the Company’s long-term debt at December 31, 2024, are as follows:
Years Ending December 31, |  |  |
2025 |  | $ | — |
2026 |  |  | — |
2027 |  |  | 35,000 |
2028 |  |  | — |
2029 |  |  | 425,000 |
Thereafter |  |  | — |
Total |  | $ | 460,000 |
The Company incurred amortization of deferred financing fees for its long-term debt of $2.6 million, $1.0 million and $1.1 million for each of the years ended December 31, 2024, 2023 and 2022. Such amortization is recorded as a component of net interest expense.

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