X0202 SCHEDULE 13D/A 0001140361-23-032776 0001503466 XXXXXXXX LIVE 12 Class A Common Stock, par value $0.01 per share 03/23/2026 0001687187 75134P303 Ramaco Resources, Inc.

250 West Main Street Suite 1900 Lexington KY 40507

Bryan H. Lawrence (212) 515-2112 Yorktown Partners LLC 410 Park Avenue, 20th Floor New York NY 10022 Jesse E. Betts (214) 233-4537 Willkie Farr & Gallagher LLP 2828 Routh Street Dallas TX 75201 0001503466 N Yorktown Energy Partners IX, L.P. OO DE 0 2694564 0 2694564 2694564 4.81 PN (1) The percent of class represented by the amount in Row (11) is based on 55,963,520 shares of Class A common stock, par value $0.01 per share ("Class A Common Stock") of Ramaco Resources, Inc. (the "Issuer") outstanding as of February 25, 2026, as reported in the Issuer's Form 10-K, filed with the Securities and Exchange Commission ("SEC") on February 26, 2026. Y Yorktown IX Company LP OO DE 0 2694564 0 2694564 2694564 4.81 PN (1) These securities are directly held by Yorktown Energy Partners IX, L.P. Yorktown IX Company LP is the sole general partner of Yorktown Energy Partners IX, L.P. As a result, Yorktown IX 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 owned by Yorktown Energy Partners IX, L.P. Yorktown IX Company LP disclaims beneficial ownership of the securities owned by Yorktown Energy Partners IX, L.P. in excess of its pecuniary interests therein. (2) The percent of class represented by the amount in Row (11) is based on 55,963,520 shares of Class A Common Stock of the Issuer outstanding as of February 25, 2026, as reported in the Issuer's Form 10-K, filed with the SEC on February 26, 2026. Y Yorktown IX Associates LLC OO DE 0 2694564 0 2694564 2694564 4.81 OO (1) These securities are directly held by Yorktown Energy Partners IX, L.P. Yorktown IX Company LP is the sole general partner of Yorktown Energy Partners IX, L.P. and Yorktown IX Associates LLC is the sole general partner of Yorktown IX Company LP. As a result, Yorktown IX 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 Energy Partners IX, L.P. Yorktown IX Company LP and Yorktown IX Associates LLC disclaim beneficial ownership of the securities owned by Yorktown Energy Partners IX, L.P. in excess of their pecuniary interests therein. (2) The percent of class represented by the amount in Row (11) is based on 55,963,520 shares of Class A Common Stock of the Issuer outstanding as of February 25, 2026, as reported in the Issuer's Form 10-K, filed with the SEC on February 26, 2026. Class A Common Stock, par value $0.01 per share Ramaco Resources, Inc. 250 West Main Street Suite 1900 Lexington KY 40507 This Amendment No. 12 amends the Schedule 13D with respect to the shares of Class A Common Stock, of the Issuer, previously filed by Yorktown Energy Partners IX, L.P., a Delaware limited partnership, Yorktown IX Company LP, a Delaware limited partnership, and Yorktown IX Associates LLC, a Delaware limited liability company (together, the "Reporting Persons") with the SEC on February 21, 2017, as amended by Amendment No. 1 thereto filed with the SEC on October 22, 2018, as further amended by Amendment No. 2 thereto filed with the SEC on March 28, 2019, as further amended by Amendment No. 3 filed with the SEC on May 31, 2019, as further amended by Amendment No. 4 filed with the SEC on November 8, 2021, as further amended by Amendment No. 5 filed with the SEC on March 8, 2022, as further amended by Amendment No. 6 filed with the SEC on May 19, 2022, as further amended by Amendment No. 7 filed with the SEC on May 26, 2022, as further amended by Amendment No. 8 filed with the SEC on June 2, 2022, as further amended by Amendment No. 9 filed with the SEC on November 21, 202 , as further amended by Amendment No. 10 filed with the SEC on March 31, 2025, as further amended by amendment No. 11 filed with the SEC on August 8, 2025 (the "Schedule 13D"). Capitalized terms used herein without definition shall have the meanings given to such terms in the Schedule 13D. This Amendment No. 12 amends the Schedule 13D as specifically set forth herein. Item 5(a) is hereby amended and restated in its entirety by the following: As of March 23, 2026, each of the Reporting Persons beneficially owns 2,694,564 shares of Class A Common Stock of the Issuer, representing 4.81% of the issued and outstanding shares of Class A Common Stock of the Issuer (based on 55,963,520 shares of Class A Common Stock of the Issuer outstanding as of February 25, 2026, as reported in the Issuer's Form 10-K, filed with the SEC on February 26, 2026). Each Reporting Person disclaims beneficial ownership of the reported Class A Common Stock except to the extent of such Reporting Person's pecuniary interest therein, and this statement shall not be deemed an admission that such Reporting Person is the beneficial owner of the reported Class A Common Stock for the purposes of Section 13(d) of the Exchange Act or any other purpose. Item 5(b) is hereby amended and restated in its entirety by the following: As of March 23, 2026, Yorktown Energy Partners IX, L.P. directly owns 2,694,564 shares of Class A Common Stock of the Issuer. Yorktown IX Company LP is the sole general partner of Yorktown Energy Partners IX, L.P. Yorktown IX Associates LLC is the sole general partner of Yorktown IX Company LP. Yorktown IX Associates LLC has the sole power to cause Yorktown IX Company LP to cause Yorktown Energy Partners IX, L.P. to vote or direct the vote or to dispose or direct the disposition of the shares owned by Yorktown Energy Partners IX, L.P. Item 5(c) is hereby amended and restated in its entirety by the following: From March 5, 2026 through March 23, 2026, Yorktown Equity Partners IX, L.P. sold 402,570 shares of Class A Common Stock of the Issuer in a series of open market sales. Except as disclosed in the table below, there have been no transactions in the shares of Class A Common Stock by the Reporting Persons in the last 60 days: Date of Sale Number of Shares Weighted Average Price Per Share March 5, 2026 6,637 $15.1791(1) March 17, 2026 65,989 $14.2172(2) March 18, 2026 65,989 $13.7665(3) March 19, 2026 131,977 $14.4059(4) March 20, 2026 65,989 $13.4811(5) March 23, 2026 65,989 $13.5327(6) 1. This price is a weighted average price. These shares of Class A Common Stock were sold in multiple transactions at prices ranging from $15.00 to $15.60, inclusive. The Reporting Persons undertake to provide to the Issuer, 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 footnotes (1), (2), (3), (4), (5) and (6) herein. 2. This price is a weighted average price. These shares of Class A Common Stock were sold in multiple transactions at prices ranging from $13.905 to $14.4225, inclusive. 3. This price is a weighted average price. These shares of Class A Common Stock were sold in multiple transactions at prices ranging from $13.585 to $14.10, inclusive. 4. This price is a weighted average price. These shares of Class A Common Stock were sold in multiple transactions at prices ranging from $12.7075 to $15.077, inclusive. 5. This price is a weighted average price. These shares of Class A Common Stock were sold in multiple transactions at prices ranging from $13.10 to $14.0977, inclusive. 6. This price is a weighted average price. These shares of Class A Common Stock were sold in multiple transactions at prices ranging from $13.20 to $13.85, inclusive. March 23, 2026 Yorktown Energy Partners IX, L.P. /s/ Bryan H Lawrence 03/25/2026 Yorktown IX Company LP /s/ Bryan H Lawrence 03/25/2026 Yorktown IX Associates LLC /s/ Bryan H Lawrence 03/25/2026