Upgrade to SI Premium - Free Trial

Form SCHEDULE 13D/A Riley Exploration Permia Filed by: Yorktown Energy Partners XI, L.P.

May 28, 2026 9:33 PM





If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




schemaVersion:


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) The percent of class represented by the amount in Row (11) is based on 21,695,947 shares of common stock, par value $0.001 per share ("Common Stock") issued and outstanding as of May 4, 2026, which is the total number of shares outstanding as reported in the Issuer's quarterly report on Form 10-Q filed with the SEC on May 6, 2026.


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) These securities are directly held by Yorktown Energy Partners XI, L.P. ("Yorktown XI"). Yorktown XI Company LP is the sole general partner of Yorktown XI. As a result, Yorktown XI Company LP may be deemed to have the power to vote or direct the vote or to dispose or direct the disposition of the shares of Common Stock owned by Yorktown XI. Yorktown XI Company LP disclaims beneficial ownership of the securities owned by Yorktown XI in excess of its pecuniary interests therein. (2) The percent of class represented by the amount in Row (11) is based on 21,695,947 shares of Common Stock issued and outstanding as of May 4, 2026, which is the total number of shares outstanding as reported in the Issuer's quarterly report on Form 10-Q filed with the SEC on May 6, 2026.


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) These securities are directly held by Yorktown XI. Yorktown XI Company LP is the sole general partner of Yorktown XI, and Yorktown XI Associates LLC is the sole general partner of Yorktown XI Company LP. As a result, Yorktown XI Associates LLC may be deemed to have the power to vote or direct the vote or to dispose or direct the disposition of the shares owned by Yorktown XI. The managing members of Yorktown XI Associates LLC, who act by majority approval, are Bryan H. Lawrence, W. Howard Keenan, Jr., Peter A. Leidel, Tomas R. LaCosta, Robert A. Signorino and Bryan R. Lawrence. Yorktown XI Company LP and Yorktown XI Associates LLC disclaim beneficial ownership of the securities owned by Yorktown XI in excess of their respective pecuniary interests therein. The managing members of Yorktown XI Associates LLC disclaim beneficial ownership of the securities owned by Yorktown XI. (2) The percent of class represented by the amount in Row (11) is based on 21,695,947 shares of Common Stock issued and outstanding as of May 4, 2026, which is the total number of shares outstanding as reported in the Issuer's quarterly report on Form 10-Q filed with the SEC on May 6, 2026.


SCHEDULE 13D


YORKTOWN ENERGY PARTNERS XI, L.P.
Signature:/s/ Bryan H. Lawrence
Name/Title:Managing Member of the general partner of the general partner
Date:05/28/2026
YORKTOWN XI COMPANY LP
Signature:/s/ Bryan H. Lawrence
Name/Title:Managing Member of the general partner
Date:05/28/2026
YORKTOWN XI ASSOCIATES LLC
Signature:/s/ Bryan H. Lawrence
Name/Title:Managing Member of the general partner
Date:05/28/2026

ATTACHMENTS / EXHIBITS

EXHIBIT 99.1

Categories

SEC Filings