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Yorktown Energy Partners X, L.P.

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13F filer, CIK 1577919, New York, NY

Yorktown Energy Partners X, L.P. reported $77,426,100 across 4 holdings for the quarter ended 2025-12-31, in a 13F-HR filed 2026-02-17.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001140361-26-005790

Period
2025-12-31
Reported value
$77.4M
Holdings
4
Top 10 weight
100%
New
1
Sold out
0

Part of the filer group Yorktown Energy Partners XI, L.P.

How groups are built

Largest buys vs the previous quarter

SecurityShares changeApprox. value
EPSNnew+2,656,705$12.3M
METCBadded+11,744$138K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

None.

Holdings, Q4 2025

Share positions as resolved from 13F-HR 0001140361-26-005790, largest first. % of portfolio is the value over $77,426,100, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
METCRAMACO RES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 3,196,199 shares; 2024Q4: 3,196,199 shares; 2025Q1: 2,929,557 shares; 2025Q2: 2,929,557 shares; 2025Q3: 2,502,930 shares; 2025Q4: 2,502,930 shares 2,502,930$45.1M58.19%0Timeline
EPSNEPSILON ENERGY LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 2,656,705 shares 2,656,705$12.3M15.92%newTimeline
REPXRILEY EXPLORATION PERMIAN INQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 390,860 shares; 2024Q4: 390,860 shares; 2025Q1: 390,860 shares; 2025Q2: 390,860 shares; 2025Q3: 390,860 shares; 2025Q4: 390,860 shares 390,860$10.3M13.33%0Timeline
METCBRAMACO RES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 713,193 shares; 2024Q4: 713,193 shares; 2025Q1: 668,723 shares; 2025Q2: 806,465 shares; 2025Q3: 816,132 shares; 2025Q4: 827,876 shares 827,876$9.73M12.56%+11,744Timeline

How Q4 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001140361-26-005790 base2026-02-17acceptance time not in the bulk data set