9.Long-Term Debt

Our Long-Term Debt consists of the following:

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Senior Sustainability-Linked Notes

In April 2021, we issued $400.0 million aggregate principal amount of 7.625% Senior Sustainability-Linked Notes (the “Notes”) due April 1, 2026. Proceeds from the offering were $390.6 million, net of $9.4 million of debt issuance costs, and were used to repay $297.0 million of borrowings under the Credit Facility, redeem outstanding redeemable preferred units for $74.4 million, and for general corporate purposes.

The Notes are unsecured and effectively subordinated to the Credit Facility to the extent of the value of the collateral securing the Credit Facility. The Notes are guaranteed on a senior unsecured basis by our wholly- owned subsidiaries. Interest on the Notes is payable on April 1 and October 1 of each year. We may redeem all or part of the Notes at any time on or after April 1, 2023 at redemption prices ranging from 103.8125% on or after April 1, 2023 to 100% on or after April 1, 2025. In addition, on or before April 1, 2023, we may redeem up to 40% of the aggregate principal amount of the Notes with the net cash proceeds of certain equity offerings, if certain conditions are met, at a redemption price of 107.625% of the principal amount of the Notes, plus accrued interest. At any time prior to April 1, 2023, we may also redeem the Notes, in whole or in part, at a price equal to 100% of the principal amount of the Notes plus a “make-whole” premium. If we undergo a change of control, we may be required to repurchase all or a portion of the Notes at a price equal to 101% of the principal amount of the Notes, plus accrued interest.

Certain of these redemption prices are subject to increase if we fail to satisfy the Sustainability Performance Target (as defined in the indenture governing the Notes and referred to herein as “SPT”) and provide notice of such satisfaction to the trustee. From and including the interest period ending on October 1, 2023, the interest rate shall be increased by 25 basis points to 7.875% per annum unless we notify the trustee for the Notes at least 30 days prior to April 1, 2023 that, for the year ending December 31, 2022: (i) the SPT has been satisfied and (ii) the satisfaction of the SPT has been confirmed in accordance with customary procedures.

Credit Facility

Concurrent with the Notes offering in April 2021, we entered into a Restated Credit Agreement to, among other things, (i) decrease the commitments under the Credit Facility to $200.0 million, (ii) extend the maturity date to April 1, 2025, (iii) reprice the loans made under the Credit Facility and unused commitment fees to be determined based on a leverage ratio ranging from 3.00:1.00 to 4.50:1.00, (iv) provide for a $75.0 million incremental revolving facility, which shall be on the same terms as under the Credit Facility, (v) annualize EBITDA for 2021 for the purpose of covenant calculations for 2021, (vi) amend the leverage ratio covenant to comprise of a maximum total funded debt to EBITDA ratio, net of $40.0 million of unrestricted cash and cash equivalents if the facility is drawn, and net of all unrestricted cash and cash equivalents if the facility is undrawn, (vii) increase the leverage ratio covenant test level for the first two fiscal quarters of 2021 to 5.00 to

1.00, for the third quarter of 2021 to 4.75 to 1.00, and thereafter to 4.50 to 1.00 and (viii) add a secured leverage covenant of 2.50 to 1.00.

We incurred $1.4 million of expenses to refinance the Credit Facility that is included in other long- term assets. We accounted for the Restated Credit Agreement as a debt modification and recognized a loss of $0.4 million in April 2021.

As of December 31, 2021, we had no outstanding borrowings under the Credit Facility, $0.15 million in letters of credit outstanding and $200.0 million in revolving commitments available.

As of December 31, 2020, we had $297.0 million of outstanding borrowings under the Credit Facility, $0.15 million in letters of credit outstanding and $5.5 million in revolving commitments available.

The Credit Facility is secured by all of the real and material personal property owned by Solaris LLC or any of its subsidiaries, other than certain excluded assets. At December 31, 2021, we were in compliance with all covenants contained in the Credit Facility.