Yorktown Energy Partners X, L.P.

In its 13F for Q4 2025 (holdings as of December 31, 2025, filed February 17, 2026), Yorktown Energy Partners X, L.P. reported 4 stock positions worth $77.4 million. Its top holding was Ramaco Resources Class A (METC) at 58.2% of the portfolio, followed by Epsilon Energy (EPSN, 15.9%) and Riley Exploration Permian (REPX, 13.3%). Compared with Q3 2025, it opened 1 new position and added to 1. The biggest buy was a new position in Epsilon Energy (EPSN).

Most Recent 13F
Q2 2026
Location
New York, NY
CIK
0001577919
Portfolio Value
$77.4M (Q4 2025)
SEC Filing
0001140361-26-005790 ↗ filed Feb 17, 2026

Holdings Value

0$50.0M$100.0M$150.0M Q1 2024: $85.5M Q1 2024 Q2 2024: $58.6M Q2 2024 Q3 2024: $55.4M Q3 2024 Q4 2024: $52.3M Q4 2024 Q1 2025: $40.3M Q1 2025 Q2 2025: $55.3M Q2 2025 Q3 2025: $107.4M Q3 2025 Q4 2025: $77.4M $77.4M Q4 2025 Q1 2026: $69.5M Q1 2026 Q2 2026: $47.6M Q2 2026

Holdings 4 stocks · $77.4M

METC Ramaco Resources Inc. Class A 58.19% 2,502,930 $45.1M No change
EPSN Epsilon Energy Ltd. 15.92% 2,656,705 $12.3M New
REPX Riley Exploration Permian Inc. 13.33% 390,860 $10.3M No change
METCB Ramaco Resources Inc. Class B 12.56% 827,876 $9.7M Add +1.4%

Portfolio Sells Q3 2025 → Q4 2025

None this quarter.

Portfolio Buys Q3 2025 → Q4 2025

EPSN Epsilon Energy Ltd. New 15.92% +15.92
METCB Ramaco Resources Inc. Class B Add +1.4% 12.56% −0.24

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 3$47.6MMETC, EPSN, METCB
Q1 2026 4$69.5MMETC, EPSN, REPX, METCB
Q4 2025 4$77.4MMETC, EPSN, REPX, METCB
Q3 2025 3$107.4MMETC, METCB, REPX
Q2 2025 3$55.3MMETC, REPX, METCB
Q1 2025 3$40.3MMETC, REPX, METCB
Q4 2024 3$52.3MMETC, REPX, METCB
Q3 2024 3$55.4MMETC, REPX, METCB
Q2 2024 3$58.6MMETC, REPX, METCB
Q1 2024 4$85.5MMETC, REPX, STR, METCB