Magnolia Oil & Gas (MGY) director sells 19,235 Class A shares

Rhea-AI Filing Summary

Magnolia Oil & Gas Corp director Arcilia Acosta sold 19,235 shares of Class A Common Stock in an open‑market transaction. The weighted average sale price was $29.10 per share, with individual trades ranging from $29.10 to $29.12. After the sale, she directly holds 128,249 shares.

Insider Trade Summary

Net Seller: 19,235 shares ($559,777)

Net Sell 1 txn

Insider Acosta Arcilia

Role Director

Sold 19,235 shs ($560K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	19,235	$29.102	$560K

Holdings After Transaction: Class A Common Stock — 128,249 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Acosta Arcilia

(Last) (First) (Middle)

C/O MAGNOLIA OIL & GAS CORPORATION

NINE GREENWAY PLAZA, SUITE 1300

(Street)

HOUSTON TX 77046

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Magnolia Oil & Gas Corp [ MGY ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/09/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	03/09/2026		S		19,235	D	$29.102(1)	128,249	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $29.10 to $29.12, inclusive. The reported person undertakes to provide to the Company, any Company security holder, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

	/s/ Timothy D. Yang , Attorney-in-Fact	03/11/2026
	** Signature of Reporting Person	Date
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.

FAQ

What insider transaction did Magnolia Oil & Gas (MGY) report for Arcilia Acosta?

Magnolia Oil & Gas reported that director Arcilia Acosta sold 19,235 shares of Class A Common Stock. The transaction was an open‑market sale and leaves her with 128,249 shares held directly after the trade, according to the Form 4 disclosure.

How many Magnolia Oil & Gas (MGY) shares did the director sell and at what price?

Director Arcilia Acosta sold 19,235 Magnolia Oil & Gas Class A shares. The weighted average sale price was $29.10 per share, with individual transaction prices ranging from $29.10 to $29.12, as disclosed in the Form 4 footnote.

How many Magnolia Oil & Gas (MGY) shares does Arcilia Acosta hold after this Form 4 sale?

Following the reported sale, Arcilia Acosta directly holds 128,249 shares of Magnolia Oil & Gas Class A Common Stock. This post‑transaction holding figure is disclosed in the Form 4 and reflects her remaining direct ownership position after the open‑market sale.

Was the Magnolia Oil & Gas (MGY) insider trade an open‑market sale?

Yes. The Form 4 classifies Arcilia Acosta’s transaction as an open‑market sale of Class A Common Stock. The sale involved 19,235 shares at a weighted average price of $29.10 per share, executed across multiple trades within a narrow price range.

Did the Magnolia Oil & Gas (MGY) Form 4 mention derivative securities for this insider?

No derivative transactions appear in this Form 4 for Arcilia Acosta. The filing shows a single non‑derivative transaction involving Class A Common Stock, and the derivative summary section is empty, indicating no options or other derivative exercises were reported.

What price range did Magnolia Oil & Gas (MGY) shares trade at in this insider sale?

The insider sale by director Arcilia Acosta occurred at prices ranging from $29.10 to $29.12 per share. The Form 4 notes that $29.10 is a weighted average, with multiple individual trades executed within that narrow price interval.