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REI SCHEDULE 13G/A: SEC filing

PEAK6 Capital Management LLC and affiliated entities

Filed with the SEC on · accession 0001389956-26-000020

REI filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Nov 12, 2026. PEAK6 Capital Management LLC and affiliated entities filed an amended Schedule 13G reporting beneficial ownership of 10,487,298 shares (4.0%) of Ring Energy, Inc. common stock as of September 30, 2026. The stock moved +1.7% by the first close after the filing.

Summary of the filing

PEAK6 Capital Management LLC and affiliated entities filed an amended Schedule 13G reporting beneficial ownership of 10,487,298 shares (4.0%) of Ring Energy, Inc. common stock as of September 30, 2026. The filing is a passive investment disclosure under Rule 13d-1(b).

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Key details

Shares beneficially owned$10.5M
Percent of class ownedPCT 4
Reporting person / beneficial ownerPEAK6 Capital Management LLC
Parent entity of reporting personPEAK6 Partners LLC
Parent entity of reporting personPEAK6 LLC
Parent entity of reporting personPEAK6 Investments LLC
Parent entity of reporting personPEAK6 Group LLC
Parent entity of reporting personPEAK6 Capital Management Holdings LLC
IssuerRing Energy, Inc.
Majority beneficial owner of peak6 entities / reporting personMatthew Hulsizer
Majority beneficial owner of peak6 entities / reporting personJennifer Just
Chief executive officer, peak6 capital management llcTom Simpson
Chief corp. dev & legal officer, peak6 entitiesJay Coppoletta

How REI stock reacted

Close before

$1.18

Nov 11, 2026

First close after

+1.69%

$1.20

5 trading days

—

Since filing

+1.69%

$1.20

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Frequently asked questions

What did REI file with the SEC on Nov 12, 2026?

REI filed a SCHEDULE 13G/A (SEC filing). PEAK6 Capital Management LLC and affiliated entities filed an amended Schedule 13G reporting beneficial ownership of 10,487,298 shares (4.0%) of Ring Energy, Inc. common stock as of September 30, 2026. The filing is a passive investment disclosure under Rule 13d-1(b).

How do I read a SCHEDULE 13G/A?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).

How did REI stock react to this filing?

REI closed at $1.18 before the filing and $1.20 on Nov 12, 2026 (+1.69%).

Other REI SEC filings

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