Yorktown Energy Partners XI, L.P. — 13F Holdings & Portfolio
CIK 1667954 · latest 13F-HR filed 2026-05-15
Yorktown Energy Partners XI, L.P. manages $141.5M in 13F-reported U.S. long-equity assets across 4 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are REPX (45.95%), METC (32.55%), EPSN (12.49%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 0 new positions, exited 0, added to 2, and trimmed 2.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$141.5M
Long-equity book
4
Distinct positions
2026-03-31
Filed 2026-05-15
+0 / −0 / ↑2 / ↓2
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- Riley Exploration Permain$17.9M +38.1%
- Epsilon Energy Ltd$4.8M +37.1%
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | Riley Exploration Permain | REPX | 76665T102 | $65.0M | 45.95% | 1,784,113 | SH |
| 2 | Ramaco Resources Inc | METC | 75134P600 | $46.1M | 32.55% | 2,979,968 | SH |
| 3 | Epsilon Energy Ltd | EPSN | 294375209 | $17.7M | 12.49% | 2,869,560 | SH |
| 4 | Ramaco Resources Inc | METCB | 75134P501 | $12.8M | 9.01% | 1,250,613 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-15 | $141.5M | 4 | 0001140361-26-021707 |
| 2025-12-31 | 2026-02-17 | $142.9M | 4 | 0001140361-26-005796 |
| 2025-09-30 | 2025-11-14 | $194.9M | 3 | 0001140361-25-042333 |