13. DEBT

WES Operating is the borrower for all outstanding debt and is expected to be the borrower for all future debt issuances. The following table presents the outstanding debt:
December 31, 2025December 31, 2024
thousandsPrincipalCarrying
Value
Fair
Value (1)
PrincipalCarrying
Value
Fair
Value (1)
Short-term debt
3.100% Senior Notes due 2025
$ $ $ $663,831 $663,727 $662,457 
3.950% Senior Notes due 2025
   336,758 336,349 335,209 
4.650% Senior Notes due 2026
440,505 440,205 440,923 — — — 
Finance lease liabilities8,620 8,620 8,620 10,956 10,956 10,956 
Total short-term debt
$449,125 $448,825 $449,543 $1,011,545 $1,011,032 $1,008,622 
 
Long-term debt
4.650% Senior Notes due 2026
$ $ $ $440,505 $439,637 $438,699 
4.500% Senior Notes due 2028
342,935 341,667 344,561 342,935 341,123 336,207 
4.750% Senior Notes due 2028
336,260 335,143 340,517 336,260 334,753 330,483 
6.350% Senior Notes due 2029
600,000 595,551 632,118 600,000 594,270 621,936 
7.250% Senior Notes due 2030
500,000 528,142 533,615 — — — 
4.050% Senior Notes due 2030
1,057,134 1,052,468 1,036,182 1,057,134 1,051,440 992,321 
4.800% Senior Notes due 2031
600,000 594,558 599,994 — — — 
6.150% Senior Notes due 2033
750,000 742,637 796,073 750,000 741,857 764,760 
5.450% Senior Notes due 2034
800,000 791,251 806,936 800,000 790,511 772,536 
5.500% Senior Notes due 2035
600,000 590,713 598,260 — — — 
5.450% Senior Notes due 2044
600,000 594,363 548,040 600,000 594,192 534,096 
5.300% Senior Notes due 2048
700,000 688,259 605,563 700,000 687,990 595,826 
5.500% Senior Notes due 2048
350,000 343,196 309,831 350,000 343,051 304,003 
5.250% Senior Notes due 2050
1,000,000 984,797 858,550 1,000,000 984,494 857,260 
Finance lease liabilities12,425 12,425 12,425 23,329 23,329 23,329 
Total long-term debt
$8,248,754 $8,195,170 $8,022,665 $7,000,163 $6,926,647 $6,571,456 
_________________________________________________________________________________________
(1)Fair value is measured using the market approach and Level-2 fair value inputs.
13. DEBT

Debt activity. The following table summarizes the debt activity for the periods presented:
thousandsCarrying Value
Balance at December 31, 2023$7,901,304 
Commercial paper borrowings (repayments), net (1)
(610,312)
Issuance of 5.450% Senior Notes due 2034
800,000 
Repayment of 3.100% Senior Notes due 2025
(2,650)
Repayment of 3.950% Senior Notes due 2025
(12,405)
Repayment of 4.650% Senior Notes due 2026
(26,699)
Repayment of 4.500% Senior Notes due 2028
(14,159)
Repayment of 4.750% Senior Notes due 2028
(46,628)
Repayment of 4.050% Senior Notes due 2030
(47,459)
Finance lease liabilities(1,819)
Other(1,494)
Balance at December 31, 2024$7,937,679 
Acquisition of 7.250% Senior Notes due 2030
500,000 
Issuance of 4.800% Senior Notes due 2031
600,000 
Issuance of 5.500% Senior Notes due 2035
600,000 
Repayment of 3.100% Senior Notes due 2025
(663,831)
Repayment of 3.950% Senior Notes due 2025
(336,758)
Finance lease liabilities(13,241)
Other (2)
20,146 
Balance at December 31, 2025$8,643,995 
_________________________________________________________________________________________
(1)Net of borrowings and repayments related to commercial paper notes with original maturities of 90 days or less.
(2)Includes $29.4 million of premiums related to the 7.250% Senior Notes due 2030.

WES Operating Senior Notes. In January 2020, WES Operating issued the 4.050% Senior Notes due 2030 and 5.250% Senior Notes due 2050. Including the effects of the issuance prices, underwriting discounts, and interest-rate adjustments, the effective interest rates of the Senior Notes due 2030 and 2050 were 4.169% and 5.363%, respectively, at December 31, 2025 and 2024. The effective interest rate of these notes is subject to adjustment from time to time due to a change in credit rating.
During the fourth quarter of 2025, as part of the acquisition of Aris, WES Operating assumed $500.0 million in aggregate principal amount of 7.250% Senior Notes due 2030. See Note 3. Also during the fourth quarter of 2025, WES Operating completed the public offerings of $1.2 billion in aggregate principal amount of Senior Notes. Net proceeds from these public offerings (i) will be used to repay the 4.650% Senior Notes due 2026, (ii) were used to pay amounts outstanding under its commercial paper program (including borrowings incurred to fund the cash consideration of the acquisition of Aris), and (iii) will be used for general partnership purposes, including the funding of capital expenditures.
During the second quarter of 2025, WES Operating retired the total principal amount outstanding of the 3.950% Senior Notes due 2025 at par value. During the first quarter of 2025, WES Operating retired the total principal amount outstanding of the 3.100% Senior Notes due 2025 at par value. See Debt activity above. As of December 31, 2025, the 4.650% Senior Notes due 2026 were classified as short-term debt on the consolidated balance sheet.
13. DEBT

During the third quarter of 2024, WES Operating completed the public offering of $800.0 million in aggregate principal amount of 5.450% Senior Notes due 2034. Net proceeds from the offering were used to repay a portion of the 3.100% and 3.950% Senior Notes due 2025, and for general partnership purposes, including the funding of capital expenditures. In addition, during 2024, WES Operating purchased and retired $150.0 million of certain of its senior notes via open-market repurchases with cash from operations.
As of December 31, 2025, WES Operating was in compliance with all covenants under the relevant governing indentures.

Revolving credit facility. In April 2025, WES Operating exercised an option to extend the maturity date of the RCF from April 2029 to April 2030, for each extending lender. The non-extending lenders’ commitments mature in April 2028 and represent $120.0 million out of $2.0 billion of total commitments, which are expandable to a maximum of $2.5 billion, from all lenders.
The RCF bears interest at an Adjusted Term SOFR (as defined in the RCF amendment), plus applicable margins ranging from 1.00% to 1.70%, or an alternate base rate equal to the greatest of (a) the Prime Rate, (b) the Federal Funds Effective Rate plus 0.50%, or (c) Adjusted Term SOFR for a one-month tenor in effect on such day plus 1.00%, in each case plus applicable margins currently ranging from zero to 0.70%, based on WES Operating’s senior unsecured debt rating. A required quarterly facility fee is paid ranging from 0.125% to 0.300% of the commitment amount (whether drawn or undrawn), which also is based on the senior unsecured debt rating.
The RCF contains certain covenants that limit, among other things, WES Operating’s ability, and that of certain of its subsidiaries, to incur additional indebtedness, grant certain liens, merge, consolidate, or allow any material change in the character of its business, enter into certain related-party transactions, and use proceeds other than for partnership purposes. The RCF also contains various customary covenants, certain events of default, and a maximum consolidated leverage ratio as of the end of each fiscal quarter (which is defined as the ratio of consolidated indebtedness as of the last day of a fiscal quarter to Consolidated EBITDA, as defined in the RCF agreement, for the most-recent four-consecutive fiscal quarters ending on such day) of 5.0 to 1.0, or a consolidated leverage ratio of 5.5 to 1.0 with respect to quarters ending in the 270-day period immediately following certain acquisitions. As a result of certain covenants contained in the RCF, our capacity to borrow under the RCF may be limited.
As of December 31, 2025, there were no outstanding borrowings, resulting in $2.0 billion in effective borrowing capacity under the RCF. Any outstanding commercial paper borrowings (see below) reduce the effective borrowing capacity under the RCF as WES Operating maintains availability under the RCF as support for its commercial paper program. As of December 31, 2025 and 2024, the interest rate on any outstanding RCF borrowings was 4.99% and 5.63%, respectively. The facility-fee rate was 0.20% at December 31, 2025 and 2024. As of December 31, 2025, WES Operating was in compliance with all covenants under the RCF.

Commercial paper program. In November 2023, WES Operating entered into an unsecured commercial paper program under which it may issue (and have outstanding at any one time) an aggregate principal amount up to $2.0 billion. WES Operating intends to maintain a minimum aggregate available borrowing capacity under the RCF equal to the aggregate amount of outstanding commercial paper borrowings. The maturities of the notes may vary but may not exceed 397 days. As of December 31, 2025, there were no outstanding borrowings under the commercial paper program.

Historical Timeline

Fiscal YearFiled
2025Feb 18, 2026Showing above
2024Feb 26, 2025
2023Feb 21, 2024
2022Feb 22, 2023
2021Feb 23, 2022
2020Feb 26, 2021
2019Feb 27, 2020
2018Feb 20, 2019
2017Feb 16, 2018
2016Feb 23, 2017
2015Feb 25, 2016

About Debt Disclosures

Debt disclosures detail a company's borrowing structure — the types of instruments, interest rates, maturity schedule, and covenant restrictions that define its financial obligations and flexibility. This section is essential for assessing refinancing risk, interest rate exposure, and the margin of safety against financial distress.

Key signals: the maturity schedule reveals concentration risk — large maturities within 1-2 years during tight credit markets can force dilutive refinancing or asset sales. Compare the fair value of debt against carrying amount to gauge whether the market views the company's credit risk differently than the balance sheet suggests. Watch covenant compliance disclosures for tightening cushions, especially leverage and interest coverage ratios. Variable-rate debt exposure quantifies sensitivity to interest rate changes. Secured versus unsecured mix affects recovery rates and future borrowing capacity. Compare net debt-to-EBITDA against industry peers and covenant limits to assess financial health.