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BCS

Notice of Proposed Sale · 144

Devon Energy Corporation

DVNNYSEEQUITYCurrent

Notice of Proposed Sale

Filed Jul 28, 2026Accepted Jul 28, 2026, 12:43 PM EDTFiling CIK 1090012Accession 0001959173-26-005406
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Structured filing — 144

primary_doc.xml

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer
DEVON ENERGY CORP/DE
Issuer CIK
0001090012
SEC file number
001-32318
Phone
4055523333
Person for whose account securities are to be sold
Cashion Tana K
Relationships to issuer
Former Officer
Street
THREE MEMORIAL CITY PLAZA
Street (continued)
840 GESSNER ROAD, SUITE 1400
City
HOUSTON
State / country code
TX
Postal code
77024

Securities proposed for sale

Securities proposed for sale · 1 reported row
SecurityProposed unitsAggregate market valueUnits outstandingApproximate sale dateExchangeBroker / market maker
Common35,7801,538,092.54621,400,00007/28/2026NYSEFidelity Brokerage Services LLC

Broker / market maker — proposed row 1, entry 1

Name
Fidelity Brokerage Services LLC
Street
900 Salem Street
City
Smithfield
State / country code
RI
Postal code
02917

Acquisition of securities to be sold

Acquisition of securities to be sold · 3 reported rows
SecurityAcquiredNature of acquisitionAcquired fromAmount acquiredGift transactionPayment dateNature of payment
Common02/10/2024Restricted Stock VestingIssuer15,633N02/10/2024Compensation
Common02/10/2025Restricted Stock VestingIssuer10,823N02/10/2025Compensation
Common02/10/2026Restricted Stock VestingIssuer9,324N02/10/2026Compensation

Sales reported in the preceding three months

Sales reported in the preceding three months · 1 reported row
SellerSecuritySale dateAmount soldGross proceeds
Tana K. CashionCommon06/18/202633,7241,418,553.05

Seller — prior-sale row 1, entry 1

Name
Tana K. Cashion
Street
333 West Sheridan Avenue
City
Oklahoma City
State / country code
OK
Postal code
73102-5015

Prior-sale reporting

Nothing to report for the preceding three months
N

Notice signature

Notice date
07/28/2026
Signed
/s/ Jared Cook, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Tana K. Cashion

Company context

Devon Energy is a leading oil and gas producer in the U.S. with a diversified multi-basin portfolio headlined by a world-class acreage position in the Delaware Basin. Devon’s disciplined cash-return business model is designed to achieve strong returns, generate free cash flow and return capital to shareholders, while focusing on safe and sustainable operations. For more information, please visit www.devonenergy.com.

Current securities

Recent company filings

  1. Regulation FD Disclosure · Other EventsOct 8, 2026
  2. SD filingSep 23, 2026
  3. 144 filingSep 14, 2026
  4. 144 filingSep 14, 2026
  5. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory ArrangementsAug 27, 2026

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