Statement of Changes in Beneficial Ownership (4)

FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^* EnerVest, Ltd.	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 __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below)
(Last) (First) (Middle) 1001 FANNIN STREET, SUITE 800,	3. Date of Earliest Transaction (MM/DD/YYYY) 6/18/2021
(Street) HOUSTON, TX 77002 (City) (State) (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _ X _ 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. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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)
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Common Stock	6/18/2021		C		1100379 ⁽⁴⁾	A	⁽¹⁾	30604226 ⁽²⁾⁽³⁾⁽⁵⁾⁽¹⁰⁾⁽¹¹⁾	D
Class A Common Stock	6/18/2021		S		7600000 ⁽¹⁵⁾	D	$14.35 ⁽⁷⁾	23004226 ⁽²⁾⁽³⁾⁽¹⁰⁾⁽¹¹⁾⁽¹⁴⁾	D

*Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)*
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		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 of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)
Class B Common Stock	⁽¹⁾⁽⁴⁾	6/18/2021		C			1100379 ⁽⁴⁾	⁽¹⁾	⁽⁹⁾	Class A Common Stock	1100379 ⁽⁴⁾	$0 ⁽¹⁾	65523656 ⁽²⁾⁽³⁾⁽⁶⁾⁽¹⁰⁾⁽¹¹⁾⁽¹²⁾	D
Class B Common Stock	⁽¹⁾⁽⁸⁾	6/18/2021		S			5000000 ⁽⁸⁾	⁽¹⁾	⁽⁹⁾	Class A Common Stock	5000000 ⁽⁸⁾	$14.35 ⁽⁷⁾	60523656 ⁽²⁾⁽³⁾⁽¹⁰⁾⁽¹¹⁾⁽¹²⁾⁽¹³⁾	D

Explanation of Responses:
(1)	Shares of the Issuer's Class B Common Stock ("Class B Common Stock"), when combined with an equal number of units ("Units") of Magnolia Oil & Gas Parent LLC, a Delaware limited liability company of which the Issuer is the managing member, are exchangeable from time to time at the option of the holders thereof for shares of the Issuer's Class A Common Stock ("Class A Common Stock") on a one-for-one basis (or, at the Issuer's option, for cash).
(2)	EnerVest Management GP, L.C. ("EVM GP") is the general partner of EnerVest, Ltd. ("EnerVest"), which is the sole member, with sole control over the actions of, each of, EVFA GP XIV, LLC, EVFA XIV-2A, LLC and EVFA XIV-3A, LLC, the managing general partners, respectively, of EnerVest Energy Institutional Fund XIV-A, L.P. ("EV XIV-A"), EnerVest Energy Institutional Fund XIV-2A, L.P. ("EV XIV-2A") and EnerVest Energy Institutional Fund XIV-3A, L.P. ("EV XIV-3A"). EnerVest is also the sole member, with sole control over the actions of, each of, EnerVest Holding XIV, LLC, the general partner of EnerVest Energy Institutional Fund XIV-WIC, L.P. ("EV XIV-WIC"), EVFC GP XIV, LLC, the managing general partner of EnerVest Energy Institutional Fund XIV-C-AIV, L.P. ("EV XIV-C-AIV"), and EVFC GP XIV, LLC, the managing general partner of EnerVest Energy Institutional Fund XIV-C, L.P. ("EV XIV-C").
(3)	EnerVest Investment Services, L.L.C. ("EIS, LLC") is the investment advisor for EV XIV-A, EV XIV-2A, EV XIV-3A, EV XIV-WIC, EV XIV-C-AIV and EV XIV-C (such six entities together, the "Record Holders" and each, a "Record Holder").
(4)	Represents: (i) 728,276 shares of Class B Common Stock held by EV XIV-A converted to the same number of shares of Class A Common Stock; (ii) 7,608 shares of Class B Common Stock held by EV XIV-WIC converted to the same number of shares of Class A Common Stock; (iii) 139,369 shares of Class B Common Stock held by EV XIV-2A converted to the same number of shares of Class A Common Stock; (iv) 143,773 shares of Class B Common Stock held by EV XIV-3A converted to the same number of shares of Class A Common Stock; and (v) 81,353 shares of Class B Common Stock held by EV XIV-C-AIV converted to the same number of shares of Class A Common Stock (collectively, the "June 2021 Conversion Shares").
(5)	Represents the June 2021 Conversion Shares and 29,503,847 shares of Class A Common Stock held by EV XIV-C.
(6)	Represents shares of Class B Common Stock held (prior to giving effect to the June 2021 Transfer (defined below)) as follows: (i) 43,366,254 shares of Class B Common Stock held by EV XIV-A; (ii) 453,027 shares of Class B Common Stock held by EV XIV-WIC; (iii) 8,298,927 shares of Class B Common Stock held by EV XIV-2A; (iv) 8,561,190 shares of Class B Common Stock held by EV XIV-3A; and (v) 4,844,258 shares of Class B Common Stock held by EV XIV-C-AIV.
(7)	This amount represents the purchase price in the 144 Sale (as defined below). The Record Holders, other than EV XIV-C, also used this price per share for the purchase price of the shares of Class B Common Stock under the June 2021 Transfer.
(8)	Represents: (i) 3,309,206 shares of Class B Common Stock transferred by EV XIV-A; (ii) 34,570 shares of Class B Common Stock transferred by EV XIV-WIC; (iii) 633,277 shares of Class B Common Stock transferred by EV XIV-2A; (iv) 653,290 shares of Class B Common Stock transferred by EV XIV-3A; and (v) 369,657 shares of Class B Common Stock transferred by EV XIV-C-AIV (collectively, the "June 2021 Transfer").
(9)	Not applicable.
(10)	Each Record Holder and each of EVM GP, EnerVest, EVFA GP XIV, LLC, EVFA XIV-2A, LLC, EVFA XIV-3A, LLC, EnerVest Holding XIV, LLC, EVFC GP XIV, LLC, and EIS, LLC (collectively, the "Non-Fund Entities") directly (whether through ownership or position) or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, to be the indirect beneficial owner of some or all of the Equity Interests (as defined below) owned by the Record Holders and, therefore, a "ten percent holder" hereunder.
(11)	Each Record Holder and each Non-Fund Entity disclaims beneficial ownership of the Equity Interests reported herein, except to the extent of its pecuniary interest therein, and, with respect to each of the Record Holders, except to the extent of its respective direct ownership reported herein, and this report shall not be deemed an admission that the Reporting Persons are the beneficial owners of such securities for purposes of Section 16 or for any other purposes.
(12)	Represents the aggregate number of shares of Class B Common Stock owned by EV XIV-A, EV XIV-2A, EV XIV-3A, EV XIV-WIC, and EV XIV-C-AIV. (EV XIV-C's shares of Class A Common Stock, together with the shares of Class B Common Stock and Units held by EV XIV-A, EV XIV-2A, EV XIV-3A, EV XIV-WIC, and EV XIV-C-AIV, are collectively referred to herein as the "Equity Interests.")
(13)	EV XIV-A owns of record 40,057,048 shares of Class B Common Stock; EV XIV-2A owns of record 7,665,650 shares of Class B Common Stock; EV XIV-3A owns of record 7,907,900 shares of Class B Common Stock; EV XIV-WIC owns of record 418,457 shares of Class B Common Stock; and EV XIV-C-AIV owns of record 4,474,601 shares of Class B Common Stock.
(14)	EV XIV-C owns of record 23,004,226 shares of Class A Common Stock.
(15)	Represents shares of Class A Common Stock sold in a transaction exempt from registration pursuant to Rule 144 under the Securities Act of 1933, as amended (the "144 Sale"), as follows: (i) 728,276 shares of Class A Common Stock sold by EV XIV-A; (ii) 7,608 shares of Class A Common Stock sold by EV XIV-WIC; (iii) 139,369 shares of Class A Common Stock sold by EV XIV-2A; (iv) 143,773 shares of Class A Common Stock sold by EV XIV-3A; (v) 81,353 shares of Class A Common Stock sold by EV XIV-C-AIV; and (vi) 6,499,621 shares of Class A Common Stock sold by EV XIV-C.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
EnerVest, Ltd. 1001 FANNIN STREET, SUITE 800 HOUSTON, TX 77002	X	X
EnerVest Management GP, L.C. C/O ENERVEST LTD. 1001 FANNIN STREET, SUITE 800 HOUSTON, TX 77002		X
EnerVest Energy Institutional Fund XIV-A, L.P. C/O ENERVEST LTD. 1001 FANNIN STREET, SUITE 800 HOUSTON, TX 77002		X
EnerVest Energy Institutional Fund XIV-2A, L.P. C/O ENERVEST LTD. 1001 FANNIN STREET, SUITE 800 HOUSTON, TX 77002		X
EnerVest Energy Institutional Fund XIV-3A, L.P. C/O ENERVEST LTD. 1001 FANNIN STREET, SUITE 800 HOUSTON, TX 77002		X
EnerVest Energy Institutional Fund XIV-WIC, L.P. C/O ENERVEST LTD. 1001 FANNIN STREET, SUITE 800 HOUSTON, TX 77002		X
EnerVest Energy Institutional Fund XIV-C-AIV, L.P. C/O ENERVEST LTD. 1001 FANNIN STREET, SUITE 800 HOUSTON, TX 77002		X
EnerVest Energy Institutional Fund XIV-C, L.P. C/O ENERVEST LTD. 1001 FANNIN STREET, SUITE 800 HOUSTON, TX 77002		X
EnerVest Investment Services, L.L.C. C/O ENERVEST LTD. 1001 FANNIN STREET, SUITE 800 HOUSTON, TX 77002		X

Signatures
/s/ Jud Walker, President & Chief Executive Officer, EnerVest Management GP, L.C., the General Partner of EnerVest, Ltd.		6/21/2021
^**Signature of Reporting Person		Date
/s/ Jud Walker, President & Chief Executive Officer, EnerVest Management GP, L.C.		6/21/2021
^**Signature of Reporting Person		Date
/s/ Jud Walker, President & Chief Executive Officer, EnerVest Management GP, L.C., the General Partner of EnerVest, Ltd., the sole member of EVFA GP XIV, LLC, the Managing General Partner of EnerVest Energy Institutional Fund XIV-A, L.P.		6/21/2021
^**Signature of Reporting Person		Date
/s/ Jud Walker, President & Chief Executive Officer, EnerVest Management GP, L.C., the General Partner of EnerVest, Ltd., the sole member of EVFA XIV-2A, LLC, the Managing General Partner of EnerVest Energy Institutional Fund XIV-2A, L.P.		6/21/2021
^**Signature of Reporting Person		Date
/s/ Jud Walker, President & Chief Executive Officer, EnerVest Management GP, L.C., the General Partner of EnerVest, Ltd., the sole member of EVFA XIV-3A, LLC, the Managing General Partner of EnerVest Energy Institutional Fund XIV-3A, L.P.		6/21/2021
^**Signature of Reporting Person		Date
/s/ Jud Walker, President & Chief Executive Officer, EnerVest Management GP, L.C., the General Partner of EnerVest, Ltd., the sole member of EnerVest Holding XIV, LLC, the General Partner of EnerVest Energy Institutional Fund XIV-WIC, L.P.		6/21/2021
^**Signature of Reporting Person		Date
/s/ Jud Walker, President & Chief Executive Officer, EnerVest Management GP, L.C., the General Partner of EnerVest, Ltd., the sole member of EVFC GP XIV, LLC, the Managing General Partner of EnerVest Energy Institutional Fund XIV-C, L.P.		6/21/2021
^**Signature of Reporting Person		Date
/s/ Jud Walker, President & Chief Executive Officer, EnerVest Management GP, L.C., the General Partner of EnerVest, Ltd., the sole member of EVFC GP XIV, LLC, the Managing General Partner of EnerVest Energy Institutional Fund XIV-C-AIV, L.P.		6/21/2021
^**Signature of Reporting Person		Date
/s/ Travis W. Hancock, Senior Vice President & Chief Financial Officer, EnerVest Operating, L.L.C., the General Partner of EnerVest Holding, L.P., the sole member of EnerVest Investment Services, L.L.C.		6/21/2021
^**Signature of Reporting Person		Date