SCHEDULE 13D/A Filed 2026-05-28 Event 2026-05-28 SEC 0001140361-26-023207 →

Yorktown Energy Partners XI, L.P. → Riley Exploration Permian, Inc. REPX

Stake: — Shares: 1,284,113 Class: Common Stock, par value $0.001 per share

Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 28/100 · Filer 90d Win Rate: 0% · Hist. 90d Edge: +0.0%

Active Schedule 13D filer baseline
Elevated short days-to-cover (6.3 DTC)

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

8 13D/G filings on this issuer

7 other filings besides this one

Filer Track Record

2 filings by this filer

1 other filing in the data moat

Short Interest · settle 2026-10-15

DTC 6.29

1,195,371 shares short · +0.3% vs prior

Post-Filing Returns · since 2026-05-28 on REPX

+1 day

0.0%

+5 days

0.0%

+30 days

0.0%

+60 days

+1.7%

+90 days

—

+180 days

—

Anchor price 33.14 on closest trading day on/after 2026-05-28. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on Riley Exploration Permian, Inc.

Filed	Form	Filer	Stake	Shares
2026-01-23	SCHEDULE	Bluescape Riley Exploration Holdings LLC	17.90%	3,922,699	view →
2023-07-19	SC	Riley Exploration Group, LLC	—	—	view →
2023-07-14	SC	Texel Resources Inc.	—	—	view →
2021-12-07	SC	Boomer Petroleum LLC	—	—	view →
2021-10-18	SC	Riley Exploration Group, LLC	—	—	view →
2021-04-14	SC	Bluescape Riley Exploration Holdings LLC	—	—	view →
2021-04-09	SC	Bluescape Riley Exploration Holdings LLC	—	—	view →

Other Filings by Yorktown Energy Partners XI, L.P.

Filed	Form	Issuer	Stake	Shares
2025-08-11	SCHEDULE	Ramaco Resources, Inc. METCZ	6.86%	3,786,797	view →

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