# EDGAR Filing Document

**Accession Number:** 0001090012
**File Stem:** 0001193125-26-217498
**Filing Date:** 2026-5
**Character Count:** 8830
**Document Hash:** 9b15f02eeeca75612445ef81c3ce2c5e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-217498.hdr.sgml**: 20260511

**ACCESSION NUMBER**: 0001193125-26-217498

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260507

**FILED AS OF DATE**: 20260511

**DATE AS OF CHANGE**: 20260511

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** SIRGO BLAKE A
- **CENTRAL INDEX KEY:** 0001811762

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-32318
- **FILM NUMBER:** 26965148

**MAIL ADDRESS:**
- **STREET 1:** C/O COTERRA ENERGY INC.
- **STREET 2:** 840 GESSNER ROAD, SUITE 1400
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77024
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** DEVON ENERGY CORP/DE
- **CENTRAL INDEX KEY:** 0001090012
- **STANDARD INDUSTRIAL CLASSIFICATION:** CRUDE PETROLEUM & NATURAL GAS [1311]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 731567067
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** THREE MEMORIAL CITY PLAZA
- **STREET 2:** 840 GESSNER ROAD, SUITE 1400
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77024
- **BUSINESS PHONE:** 4055523333

**MAIL ADDRESS:**
- **STREET 1:** THREE MEMORIAL CITY PLAZA
- **STREET 2:** 840 GESSNER ROAD, SUITE 1400
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77024

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DEVON DELAWARE CORP
- **DATE OF NAME CHANGE:** 19990707

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>SIRGO BLAKE A<br><sub>(Last) (First) (Middle)</sub><br>THREE MEMORIAL CITY PLAZA<br>840 GESSNER ROAD, SUITE 1400<br><sub>(Street)</sub><br>HOUSTON, TX 77024<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-05-07 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_EVP, Operations_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>DEVON ENERGY CORP/DE [ DVN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock<sup>(1)</sup> | 2026-05-07 |  | A |  | 58497 | A | <sup>(1)</sup> | 58497 | D |  |
| Common Stock<sup>(2)</sup> | 2026-05-07 |  | A |  | 70271 | A | <sup>(2)</sup> | 128768 | D |  |
| Common Stock<sup>(3)(4)</sup> | 2026-05-07 |  | A |  | 36722 | A | <sup>(3)(4)</sup> | 165490 | D |  |
| Common Stock<sup>(3)(5)</sup> | 2026-05-07 |  | A |  | 33549 | A | <sup>(3)(5)</sup> | 199039 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) On May 7, 2026, pursuant to the Agreement and Plan of Merger entered into on February 1, 2026, by and among Devon Energy Corporation (''Devon''), Coterra Energy Inc. (''Coterra") and Cubs Merger Sub, Inc. (the ''Merger Agreement''), as of the effective time of the transactions contemplated thereby (the "Effective Time"), Coterra became a wholly owned subsidiary of Devon. Pursuant to the Merger Agreement, at the Effective Time, each share of Coterra's common stock, par value $0.10 per share ("Coterra Common Stock") was converted into the right to receive 0.7 shares of Devon's common stock, par value $0.10 per share ("Devon Common Stock"), subject to certain exceptions.

(2) Pursuant to the Merger Agreement, at the Effective Time, each time-based Coterra restricted stock unit ("Coterra RSU") outstanding and unvested as of immediately prior to the Effective Time was converted into 0.7 Devon time-based restricted stock units ("Devon RSUs"), with each Devon RSU representing a contingent right to receive a share of Devon Common Stock, subject to the same terms and conditions as were applicable to the corresponding Coterra RSU immediately prior to the Effective Time. The Coterra RSUs granted to the reporting person on February 24, 2026 were converted into 36,722 Devon RSUs, which will vest on January 31, 2029, and the Coterra RSUs granted to the reporting person on February 19, 2025 were converted into 33,549 Devon RSUs, which will vest on January 31, 2028.

(3) These Devon RSUs relate to an award of Coterra performance stock units (a "Coterra PSU Award") that, pursuant to the Merger Agreement, at the Effective Time, was deemed earned at 100% of the target level as a result of the certification by the Compensation Committee of Coterra's board of directors to the actual level of performance achieved under the terms of such Coterra PSU Award prior to the Effective Time and was converted, on the same terms and conditions (other than any continuing performance-based vesting conditions and cash settlement features), into an award of Devon RSUs covering a number of shares of Devon Common Stock equal to the product of (i) the target number of shares of Coterra Common Stock subject to such Coterra PSU Award as of immediately prior to the Effective Time, multiplied by (ii) 0.7.

(4) The Coterra PSU Award to which these Devon RSUs relate was granted to the reporting person on February 24, 2026 and, at the Effective Time, converted into 36,722 Devon RSUs, which will vest on January 31, 2029.

(5) The Coterra PSU Award to which these Devon RSUs relate was granted to the reporting person on February 19, 2025 and, at the Effective Time, converted into 33,549 Devon RSUs, which will vest on January 31, 2028.

**Signature:** /s/ Edward T. Highberger, attorney-in-fact  
**Date:** 2026-05-11

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**