Ring Energy (REI): PEAK6 entities disclose 6.6% ownership stake in 13G filing

Rhea-AI Filing Summary

Ring Energy, Inc. common stock holders are informed that several affiliated PEAK6 entities, along with individuals Matthew Hulsizer and Jennifer Just, have reported beneficial ownership of 17,079,382 shares of Ring Energy common stock, par value $0.001 per share.

This position represents 6.6% of the outstanding common stock. For each reporting person, the filing lists no sole voting or dispositive power and 17,079,382 shares of shared voting and shared dispositive power, reflecting coordinated control within the PEAK6 ownership structure.

Key Figures

Shares beneficially owned: 17,079,382 shares Percent of class: 6.6% Par value per share: $0.001 +2 more

5 metrics

Shares beneficially owned 17,079,382 shares Beneficially owned by PEAK6 entities and individuals as reported

Percent of class 6.6% Portion of Ring Energy common stock beneficially owned

Par value per share $0.001 Par value of Ring Energy common stock class reported

CUSIP 76680V108 Identifier for Ring Energy common stock

Number of reporting persons 8 Six PEAK6 entities plus Matthew Hulsizer and Jennifer Just

Key Terms

beneficially owned, shared voting power, shared dispositive power, Schedule 13G, +1 more

5 terms

beneficially owned financial

"Amount beneficially owned: PEAK6 Capital Management LLC is wholly owned..."

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

shared voting power financial

"6 | Shared Voting Power 17,079,382.00 7 | Sole Dispositive Power 0.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

shared dispositive power financial

"8 | Shared Dispositive Power 17,079,382.00 9 17,079,382.00"

Schedule 13G regulatory

"form_type": "SCHEDULE 13G"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

CUSIP Number financial

"(e) | CUSIP Number(s): 76680V108"

A CUSIP number is a nine-character code that uniquely identifies a specific U.S. or Canadian stock, bond, or other security, similar to a barcode or a social-security number for a financial instrument. It matters to investors because it removes confusion between similar securities, ensures trades and settlements are applied to the correct issue, and helps locate official documents and transaction records quickly.

FAQ

What stake in Ring Energy (REI) does PEAK6 report in this Schedule 13G?

The filing reports that PEAK6-affiliated entities and two individuals beneficially own 17,079,382 shares of Ring Energy common stock, representing 6.6% of the class. This indicates a significant, though non‑controlling, institutional position in REI.

Who are the reporting persons in the Ring Energy (REI) Schedule 13G?

The reporting persons are PEAK6 Capital Management LLC, several related PEAK6 entities, and individuals Matthew Hulsizer and Jennifer Just. Together they report shared beneficial ownership and shared voting and dispositive power over Ring Energy shares.

How much voting power over Ring Energy (REI) shares does PEAK6 have?

Each reporting person reports 0 shares with sole voting power and 17,079,382 shares with shared voting power. They also report the same amount with shared dispositive power, showing voting and disposition decisions are shared among the PEAK6-related entities and individuals.

What percentage of Ring Energy (REI) common stock is reported as beneficially owned?

The Schedule 13G states that the reporting persons beneficially own 6.6% of Ring Energy’s common stock. This percentage is based on the company’s outstanding shares and reflects a sizeable institutional ownership position without indicating majority control.

What class of Ring Energy (REI) securities is covered and what is the CUSIP?

The filing covers Ring Energy’s Common Stock, par value $0.001 per share. The security is identified by CUSIP 76680V108. All reported ownership figures, including the 17,079,382 shares and 6.6% stake, relate to this class of common stock.

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Available on EDGAR 08/14/2026 - 09:20 AM Accepted by SEC EDGAR 08/14/2026 - 09:19 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

RING ENERGY, INC.

(Name of Issuer)

Common Stock, par value $0.001

(Title of Class of Securities)

76680V108

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 76680V108

1

Names of Reporting Persons

PEAK6 Capital Management LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 17,079,382.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 17,079,382.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

17,079,382.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.6 %

12

Type of Reporting Person (See Instructions)

BD

SCHEDULE 13G

CUSIP Number(s): 76680V108

1

Names of Reporting Persons

PEAK6 Partners LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 17,079,382.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 17,079,382.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

17,079,382.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.6 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 76680V108

1

Names of Reporting Persons

PEAK6 LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 17,079,382.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 17,079,382.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

17,079,382.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.6 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 76680V108

1

Names of Reporting Persons

PEAK6 Investments LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 17,079,382.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 17,079,382.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

17,079,382.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.6 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 76680V108

1

Names of Reporting Persons

PEAK6 Group LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 17,079,382.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 17,079,382.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

17,079,382.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.6 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 76680V108

1

Names of Reporting Persons

PEAK6 Capital Management Holdings LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 17,079,382.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 17,079,382.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

17,079,382.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.6 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP Number(s): 76680V108

1

Names of Reporting Persons

Matthew Hulsizer

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 17,079,382.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 17,079,382.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

17,079,382.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.6 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

CUSIP Number(s): 76680V108

1

Names of Reporting Persons

Jennifer Just

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 17,079,382.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 17,079,382.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

17,079,382.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.6 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: RING ENERGY, INC.
(b)	Address of issuer's principal executive offices: 1725 HUGHES LANDING BLVD., SUITE 900, THE WOODLANDS, TEXAS, 77380
Item 2.
(a)	Name of person filing: PEAK6 Capital Management LLC PEAK6 Partners LLC PEAK6 LLC PEAK6 Investments LLC PEAK6 Group LLC PEAK6 Capital Management Holdings LLC Matthew Hulsizer Jennifer Just
(b)	Address or principal business office or, if none, residence: PEAK6 Capital Management LLC - 141 W. Jackson Blvd., Suite 500, Chicago IL 60604 PEAK6 Partners LLC - 2010 E. 6th St., Austin TX 78702 PEAK6 LLC - 2010 E. 6th St., Austin TX 78702 PEAK6 Investments LLC - 2010 E. 6th St., Austin TX 78702 PEAK6 Group LLC - 2010 E. 6th St., Austin TX 78702 PEAK6 Capital Management Holdings LLC - 141 W. Jackson Blvd., Suite 500, Chicago IL 60604 Matthew Hulsizer - 2010 E. 6th St., Austin TX 78702 Jennifer Just- 2010 E. 6th St., Austin TX 78702
(c)	Citizenship: PEAK6 Capital Management LLC, Delaware PEAK6 LLC, Delaware PEAK6 Investments LLC, Delaware PEAK6 Group LLC, Delaware PEAK6 Capital Management Holdings LLC, Delaware Matthew Hulsizer, U.S. Citizen Jennifer Just, U.S. Citizen
(d)	Title of class of securities: Common Stock, par value $0.001
(e)	CUSIP Number(s): 76680V108
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: PEAK6 Capital Management LLC is wholly owned by PEAK6 Capital Management Holdings LLC, which is owned by PEAK6 Group LLC, which is owned by PEAK6 Investments LLC, which is majority owned by PEAK6 Partners LLC and minority owned by PEAK6 LLC. Matthew Hulsizer and Jennifer Just are the majority direct and/or indirect ultimate beneficial owners of PEAK6 Partners LLC and PEAK6 LLC. The information specified in items 4(a) - (c) is provided in rows 5 through 11 of the cover pages for each Reporting Person and is incorporated by reference.
(b)	Percent of class: The information specified in items 4(a) - (c) is provided in rows 5 through 11 of the cover pages for each Reporting Person and is incorporated by reference.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The information specified in items 4(a) - (c) is provided in rows 5 through 11 of the cover pages for each Reporting Person and is incorporated by reference.
	(ii) Shared power to vote or to direct the vote: The information specified in items 4(a) - (c) is provided in rows 5 through 11 of the cover pages for each Reporting Person and is incorporated by reference.
	(iii) Sole power to dispose or to direct the disposition of: The information specified in items 4(a) - (c) is provided in rows 5 through 11 of the cover pages for each Reporting Person and is incorporated by reference.
	(iv) Shared power to dispose or to direct the disposition of: The information specified in items 4(a) - (c) is provided in rows 5 through 11 of the cover pages for each Reporting Person and is incorporated by reference.
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

PEAK6 Capital Management LLC

Signature:	Tom Simpson
Name/Title:	Chief Executive Officer
Date:	08/14/2026

PEAK6 Partners LLC

Signature:	Matthew Hulsizer
Name/Title:	Manager
Date:	08/14/2026

PEAK6 LLC

Signature:	Matthew Hulsizer
Name/Title:	Manager
Date:	08/14/2026

PEAK6 Investments LLC

Signature:	Jay Coppoletta
Name/Title:	Chief Corp. Dev & Legal Officer
Date:	08/14/2026

PEAK6 Group LLC

Signature:	Jay Coppoletta
Name/Title:	Chief Corp. Dev & Legal Officer
Date:	08/14/2026

PEAK6 Capital Management Holdings LLC

Signature:	Jay Coppoletta
Name/Title:	Chief Corp. Dev & Legal Officer
Date:	08/14/2026

Matthew Hulsizer

Signature:	Matthew Hulsizer
Name/Title:	Individual
Date:	08/14/2026

Jennifer Just

Signature:	Jennifer Just
Name/Title:	Individual
Date:	08/14/2026

Exhibit Information

Exhibit A included with Cover.