Devon Energy · Earnings release · 8-K Exhibit 99

Devon Energy First-Quarter 2026

Supplemental Tables

TABLE OF CONTENTS:

PAGE:

Consolidated Statements of Earnings

2

Supplemental Information for Consolidated Statements of Earnings

3

Consolidated Balance Sheets

4

Consolidated Statements of Cash Flows

5

Production

6

Capital Expenditures and Supplemental Information for Capital Expenditures

7

Realized Pricing

8

Asset Margins

9

Core Earnings

EBITDAX

Net Debt, NetDebt-to-EBITDAX, Free Cash Flow and Reinvestment Rate

1

CONSOLIDATED STATEMENTS OF EARNINGS

(in millions, except per share amounts)

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Oil, gas and NGL sales

$

$

$

$

$

Oil, gas and NGL derivatives (1)

)

)

Marketing and midstream revenues

Total revenues

Production expenses (2)

Exploration expenses

5

8

Marketing and midstream expenses

Depreciation, depletion and amortization

Asset impairments

—

—

—

—

Asset dispositions

1

(1

)

)

)

2

General and administrative expenses

Financing costs, net (3)

Restructuring and transaction costs

—

9

9

Other, net

)

)

2

9

Total expenses

Earnings before income taxes

Income tax expense (4)

Net earnings

Net earnings attributable to noncontrolling interests

—

—

6

Net earnings attributable to Devon

$

$

$

$

$

Net earnings per share:

Basic net earnings per share

$

$

$

$

$

Diluted net earnings per share

$

$

$

$

$

Weighted average common shares outstanding:

Basic

Diluted

2

SUPPLEMENTAL INFORMATION FOR CONSOLIDATED STATEMENTS OF EARNINGS

(1)

OIL, GAS AND NGL DERIVATIVES

(in millions)

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Derivative cash settlements

$

)

$

$

$

$

)

Derivative valuation changes

)

)

Oil, gas and NGL derivatives

$

)

$

$

$

$

)

(2) PRODUCTION EXPENSES

(in millions)

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Lease operating expense

$

$

$

$

$

Gathering, processing & transportation

Production taxes

Property taxes

Production expenses

$

$

$

$

$

(3) FINANCING COSTS, NET

(in millions)

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Interest based on debt outstanding

$

$

$

$

$

Interest income

)

)

)

)

)

Other

5

2

2

4

6

Financing costs, net

$

$

$

$

$

(4) INCOME TAX EXPENSE

(in millions)

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Current expense (benefit) (1)

$

)

$

$

)

$

$

Deferred expense

Income tax expense

$

$

$

$

$

(1)

Reflects the impact of new tax guidance released in the first quarter of 2026 which established a new

adjustment to the corporate alternative minimum tax associated with the amortization of research costs beginning in 2025 under the One Big Beautiful Bill Act transition rule.

3

CONSOLIDATED BALANCE SHEETS

(in millions)

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Current assets:

Cash, cash equivalents and restricted cash

$

$

$

$

$

Accounts receivable

Inventory

Other current assets

Total current assets

Oil and gas property and equipment, based on successful efforts accounting, net

Other property and equipment, net

Total property and equipment, net

Goodwill

Right-of-useassets

Investments

Other long-term assets

Total assets

$

$

$

$

$

Current liabilities:

Accounts payable

$

$

$

$

$

Revenues and royalties payable

Short-term debt

Other current liabilities

Total current liabilities

Long-term debt

Lease liabilities

Asset retirement obligations

Other long-term liabilities

Deferred income taxes

Stockholders’ equity:

Common stock

Additional paid-in capital

Retained earnings

Accumulated other comprehensive loss

)

)

)

)

)

Total stockholders’ equity attributable to Devon

Noncontrolling interests

—

—

—

Total equity

Total liabilities and equity

$

$

$

$

$

4

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Cash flows from operating activities:

Net earnings

$

$

$

$

$

Adjustments to reconcile net earnings to net cash from operating activities:

Depreciation, depletion and amortization

Asset impairments

—

—

—

—

Leasehold impairments

3

(2

)

1

7

5

Accretion of liabilities

4

3

4

3

6

Total (gains) losses on commodity derivatives

)

)

)

Cash settlements on commodity derivatives

)

)

(Gains) losses on asset dispositions

1

(1

)

)

)

2

Deferred income tax expense

Share-based compensation

Other

(5

)

)

5

)

Changes in assets and liabilities, net

)

)

)

Net cash from operating activities

Cash flows from investing activities:

Capital expenditures

)

)

)

)

)

Acquisitions of property and equipment

)

)

)

)

(8

)

Divestitures of property and equipment and investments

2

2

Distributions from investments

9

7

9

Contributions to investments and other

(2

)

)

(2

)

(8

)

(2

)

Net cash from investing activities

)

)

)

)

)

Cash flows from financing activities:

Repayments of long-term debt

—

—

)

—

—

T1Repurchases of common stock

)

)

)

)

)

Dividends paid on common stock

)

)

)

)

)

Contributions from noncontrolling interests

—

—

—

—

Distributions to noncontrolling interests

—

—

—

)

(9

)

Acquisition of noncontrolling interests

—

—

)

—

—

Repayment of finance leases

(3

)

(8

)

—

—

)

Shares exchanged for tax withholdings and other

)

—

(1

)

(5

)

)

Net cash from financing activities

)

)

)

)

)

Effect of exchange rate changes on cash

—

(1

)

—

1

—

Net change in cash, cash equivalents and restricted cash

)

Cash, cash equivalents and restricted cash at beginning of period

Cash, cash equivalents and restricted cash at end of period

$

$

$

$

$

Reconciliation of cash, cash equivalents and restricted cash:

Cash and cash equivalents

$

$

$

$

$

Restricted cash

Total cash, cash equivalents and restricted cash

$

$

$

$

$

5

PRODUCTION

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Oil (MBbls/d)

Delaware Basin

Rockies

Eagle Ford

Anadarko Basin

Other

4

3

3

3

4

Total

Natural gas liquids (MBbls/d)

Delaware Basin

Rockies

Eagle Ford

Anadarko Basin

Other

—

—

—

—

—

Total

Gas (MMcf/d)

Delaware Basin

Rockies

Eagle Ford

Anadarko Basin

Other

1

1

—

1

—

Total

Total oil equivalent (MBoe/d)

Delaware Basin

Rockies

Eagle Ford

Anadarko Basin

Other

4

4

4

4

4

Total

6

CAPITAL EXPENDITURES

(in millions)

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Delaware Basin

$

$

$

$

$

Rockies

Eagle Ford

Anadarko Basin

Other

1

2

1

2

2

Total upstream capital

$

$

$

$

$

Midstream and Corporate

Capital expenditures

$

$

$

$

$

Acquisitions

8

Total capital

$

$

$

$

$

SUPPLEMENTAL INFORMATION FOR CAPITAL EXPENDITURES

GROSS OPERATED SPUDS

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Delaware Basin

Rockies

Eagle Ford

Anadarko Basin

7

8

5

Total

GROSS OPERATED WELLS TIED-IN

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Delaware Basin

Rockies

Eagle Ford

Anadarko Basin

—

9

6

Total

NET OPERATED WELLS TIED-IN

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Delaware Basin

Rockies

Eagle Ford

7

Anadarko Basin

—

4

5

5

2

Total

AVERAGE LATERAL LENGTH

(based on wells tied-in)

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Delaware Basin

Rockies

Eagle Ford

Anadarko Basin

—

Total

7

REALIZED PRICING

BENCHMARK PRICES

(average prices)

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Oil ($/Bbl) - West Texas Intermediate (Cushing)

$

$

$

$

$

Natural Gas ($/Mcf) - Henry Hub

$

$

$

$

$

NGL ($/Bbl) - Mont Belvieu Blended

$

$

$

$

$

REALIZED

PRICES

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Oil (Per Bbl)

Delaware Basin

$

$

$

$

$

Rockies

Eagle Ford

Anadarko Basin

Realized price without hedges

Cash settlements

)

Realized price, including cash settlements

$

$

$

$

$

Natural gas liquids (Per Bbl)

Delaware Basin

$

$

$

$

$

Rockies

Eagle Ford

Anadarko Basin

Realized price without hedges

Cash settlements

—

)

Realized price, including cash settlements

$

$

$

$

$

Gas (Per Mcf)

Delaware Basin

$

$

$

$

$

Rockies

)

)

Eagle Ford

Anadarko Basin

Realized price without hedges

Cash settlements

)

Realized price, including cash settlements

$

$

$

$

$

Total oil equivalent (Per Boe)

Delaware Basin

$

$

$

$

$

Rockies

Eagle Ford

Anadarko Basin

Realized price without hedges

Cash settlements

)

)

Realized price, including cash settlements

$

$

$

$

$

8

ASSET MARGINS

BENCHMARK PRICES

(average prices)

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Oil ($/Bbl) - West Texas Intermediate (Cushing)

$

$

$

$

$

Natural Gas ($/Mcf) - Henry Hub

$

$

$

$

$

NGL ($/Bbl) - Mont Belvieu Blended

$

$

$

$

$

PER-UNIT CASH MARGIN BY ASSET (per Boe)

Quarter 1

Quarter 4

Quarter 3

Quarter 2

Quarter 1

Delaware Basin

Realized price

$

$

$

$

$

Lease operating expenses

)

)

)

)

)

Gathering, processing & transportation

)

)

)

)

)

Production & property taxes

)

)

)

)

)

Field-level cash margin

$

$

$

$

$

Rockies

Realized price

$

$

$

$

$

Lease operating expenses

)

)

)

)

)

Gathering, processing & transportation

)

)

)

)

)

Production & property taxes

)

)

)

)

)

Field-level cash margin

$

$

$

$

$

Eagle Ford

Realized price

$

$

$

$

$

Lease operating expenses

)

)

)

)

)

Gathering, processing & transportation

)

)

)

)

)

Production & property taxes

)

)

)

)

)

Field-level cash margin

$

$

$

$

$

Anadarko Basin

Realized price

$

$

$

$

$

Lease operating expenses

)

)

)

)

)

Gathering, processing & transportation

)

)

)

)

)

Production & property taxes

)

)

)

)

)

Field-level cash margin

$

$

$

$

$

Devon - Total

Realized price

$

$

$

$

$

Lease operating expenses

)

)

)

)

)

Gathering, processing & transportation

)

)

)

)

)

Production & property taxes

)

)

)

)

)

Field-level cash margin

$

$

$

$

$

9

NON-GAAP MEASURES

(all monetary values in millions, except

per share amounts)

Devon’s earnings materials include non-GAAP financial measures. These non-GAAP measures are not alternatives to GAAP measures, and you should not consider these non-GAAP measures in isolation or as a substitute for analysis of our results as

reported under GAAP. Below is additional disclosure regarding each of the non-GAAP measures used in the earnings materials, including reconciliations to their most directly comparable GAAP measure.

The earnings materials may include forward-looking non-GAAP measures. The company is unable to provide reconciliations

of these forward-looking non-GAAP measures, because components of the calculations are inherently unpredictable, such as changes to current assets and liabilities, the timing of changes in capital accruals,

unknown future events and estimating certain future GAAP measures. The inability to reliably quantify certain components of the calculation would significantly affect the usefulness and accuracy of a reconciliation.

CORE EARNINGS

Devon’s reported net earnings

include items of income and expense that are typically excluded by securities analysts in their published estimates of the company’s financial results. Accordingly, the company also uses the measures of core earnings and core earnings per

share attributable to Devon. Devon believes these non-GAAP measures facilitate comparisons of its performance to earnings estimates published by securities analysts. Devon also believes these non-GAAP measures can facilitate comparisons of its performance between periods and to the performance of its peers. The following table summarizes the effects of these items on first-quarter 2026 and fourth-quarter

Before-tax

After-tax

After NCI

Per Diluted

Share

Total

Earnings (GAAP)

$

$

$

$

Adjustments:

Asset dispositions

1

1

1

—

Asset and exploration impairments

2

2

2

T2Fair value changes in financial instruments

Restructuring and transaction costs

Core earnings (Non-GAAP)

$

$

$