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Yorktown Energy Partners XI, L.P.: EPSN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Yorktown Energy Partners XI, L.P. on EPSN, newest first. How the timeline and the estimate are built.

Yorktown Energy Partners XI, L.P. held 6,707,389 EPSN shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 6,707,389 shares
    Change vs previous 13F 0 shares

    18.92% of the 13F portfolio, value $36,286,975.

    13F-HR 0001140361-26-033072 filed by Yorktown Energy Partners XI, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    • YORKTOWN ENERGY PARTNERS IX, L.P.: 1,181,124 shares
    • Yorktown Energy Partners X, L.P.: 2,656,705 shares
    • Yorktown Energy Partners XI, L.P.: 2,869,560 shares

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 6,707,389 shares
    Change vs previous 13F +90,117 shares

    15.38% of the 13F portfolio, value $41,317,517.

    13F-HR 0001140361-26-021707 filed by Yorktown Energy Partners XI, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    • YORKTOWN ENERGY PARTNERS IX, L.P.: 1,181,124 shares
    • Yorktown Energy Partners X, L.P.: 2,656,705 shares
    • Yorktown Energy Partners XI, L.P.: 2,869,560 shares

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 6,617,272 shares
    Change vs previous 13F not available

    10.37% of the 13F portfolio, value $30,704,142.

    13F-HR 0001140361-26-005796 filed by Yorktown Energy Partners XI, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    • YORKTOWN ENERGY PARTNERS IX, L.P.: 1,181,124 shares
    • Yorktown Energy Partners X, L.P.: 2,656,705 shares
    • Yorktown Energy Partners XI, L.P.: 2,779,443 shares

    Acceptance time not in the bulk data set (spec §4.2).