Yorktown Energy Partners X, L.P. - Stock Holdings in 13F Filings (SEC)

Updated on March 15, 2026.

Based on 13F Filings filed with the SEC on February 17, 2026, for the 2025 Q4 period, Yorktown Energy Partners X, L.P. held in its portfolio 4 assets valued at $77,426,100 (i.e. $77.43M).

The most valuable assets in the portfolio included: Ramaco Resources Inc ($45.05M), Epsilon Energy Ltd ($12.33M), and Riley Exploration Permian Inc ($10.32M).

The chart below shows the top 4 valuable assets, and the table below shows the top 4 valuable assets.

You can see similar for other investment managers.

Related Topics: SEC Topic List.

Data Source: SEC.

Top Valuable Stocks in Yorktown Energy Partners X, L.P. Portfolio

Ramaco Resources Inc

Epsilon Energy Ltd

Riley Exploration Permian Inc

Ramaco Resources Inc

Yorktown Energy Partners X, L.P. - Stock Holdings in 13F Filings (SEC)

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Name of Issuer	No. of Shares	Value ($)	Class
Ramaco Resources Inc	2502930	45052741	COM CL A
Epsilon Energy Ltd	2656705	12327111	COM
Riley Exploration Permian Inc	390860	10318704	COM
Ramaco Resources Inc	827876	9727544	COM CL B