Managers / Q4 2025 · view latest →
Yorktown Energy Partners X, L.P.
CIK 0001577919 · 410 PARK AVENUE, 20TH FLOOR, NEW YORK, NY, 10022 · 212-515-2115
Summary
Yorktown Energy Partners X, L.P. reported $77M in U.S.-listed holdings across 4 positions for Q4 2025.
The portfolio is heavily concentrated: METC alone accounts for 70.8% of reported value.
Compared with Q3 2025, the fund opened 1 new position and exited 0.
Portfolio Metrics
Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded, with multiple share classes and repeated sub-manager rows for the same issuer combined into one position — the same rule the holdings table uses by default. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.
Reported Value by Quarter
Portfolio Composition
- Common Stock · 100.0% · $77M
Quarter-over-Quarter Changes full breakdown →
vs Q3 2025 (amended baseline)
| Issuer | Move | Share Δ | Shares now | Value Δ | Value now |
|---|---|---|---|---|---|
| EPSNEpsilon Energy Ltd | NEW | +2.66M | 2.66M | +$12M | $12M |
| METCBRamaco Resources Inc | HELD | +11.7K | 827.9K | −$4M | $10M |
| METCRamaco Resources Inc | HELD | +0 | 2.50M | −$38M | $45M |
| REPXRiley Exploration Permian Inc | HELD | +0 | 390.9K | −$277,511 | $10M |
Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.
Holdings — Q4 2025
| # | Issuer | Class | % Portfolio | Value ↓ | Shares |
|---|---|---|---|---|---|
| 1 | METCRamaco Resources Inc | COM CL A · COM CL B | 70.75% | $55M | 3.33M |
| 2 | EPSNEpsilon Energy Ltdhistory → | COM | 15.92% | $12M | 2.66M |
| 3 | REPXRiley Exploration Permian Inchistory → | COM | 13.33% | $10M | 390.9K |
Filing History
| Quarter | Reported Value | Positions | Filed | Type | Links |
|---|---|---|---|---|---|
| Q1 2026 | $69M | 4 | May 15, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q4 2025 | $77M | 4 | Feb 17, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q3 2025 | $107M | 3 | Nov 14, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q2 2025 | $55M | 3 | Aug 14, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q1 2025 | $40M | 3 | May 15, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q4 2024 | $52M | 3 | Feb 14, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q3 2024 | $55M | 3 | Nov 13, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q2 2024 | $59M | 3 | Aug 13, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q1 2024 | $86M | 4 | May 15, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q4 2023 | $80M | 4 | Feb 14, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q3 2023 | $134M | 5 | Nov 14, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q2 2023 | $121M | 5 | Aug 14, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q1 2023 | $104M | 4 | May 12, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q4 2022 | $111M | 4 | Feb 14, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q3 2022 | $105M | 3 | Nov 14, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q2 2022 | $132M | 3 | Aug 11, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q1 2022 | $315M | 3 | May 16, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q4 2021 | $267M | 4 | Feb 14, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q3 2021 | $304M | 4 | Nov 15, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q2 2021 | $33M | 3 | Aug 16, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q1 2021 | $26M | 3 | May 17, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q4 2020 | $18M | 2 | Feb 16, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q3 2020 | $19M | 3 | Nov 16, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q2 2020 | $17M | 3 | Aug 14, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q1 2020 | $21M | 3 | May 15, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q4 2019 | $64M | 3 | Feb 14, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q3 2019 | $77M | 3 | Nov 14, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q2 2019 | $109M | 3 | Aug 14, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q1 2019 | $96M | 2 | May 15, 2019 | 13F-HR | changes · EDGAR ↗ |
Other Included Managers
This filing reports holdings on behalf of 2 additional managers.
- Yorktown X Associates LLC028-17863
- Yorktown X Co LP028-17862
13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.