Welcome to our dedicated page for Questar Corporation SEC filings (Ticker: STR), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
This page compiles historical SEC filings for Sitio Royalties Corp. (STR), an energy company that focused on oil and gas mineral and royalty interests before its acquisition by Viper Energy, Inc. These documents provide a detailed record of Sitio’s regulatory history, financial reporting and corporate transactions.
Core filings such as annual reports on Form 10-K and quarterly reports on Form 10-Q (referenced in company disclosures) contain information on Sitio’s oil, natural gas and natural gas liquids revenues, lease bonus and other income, production volumes, realized prices, expenses, debt structure and proved reserves. They also describe the company’s mineral and royalty interests across basins including the Delaware, Midland, DJ, Eagle Ford and Williston/Other areas.
Current reports on Form 8-K are particularly important for understanding key events. In 2025, multiple 8-K filings outline the Agreement and Plan of Merger with Viper Energy, Inc., the approval of the merger by Sitio stockholders at a special meeting on August 18, 2025, and the consummation of the mergers on August 19, 2025. One Form 8-K explains the exchange of Sitio Class A common stock for shares of New Viper Class A common stock and notes that Sitio became a wholly owned subsidiary of New Viper.
Filings related to Sitio’s trading status document its transition off the public markets. A Form 25-NSE dated August 21, 2025 records the removal of Sitio’s Class A common stock from listing and registration on the New York Stock Exchange. A subsequent Form 15 dated September 2, 2025 certifies the termination of registration under Section 12(g) of the Exchange Act and the suspension of Sitio’s duty to file periodic reports.
On Stock Titan, these filings are paired with AI-powered summaries that highlight the main points of lengthy documents, helping readers quickly understand topics such as quarterly performance, merger terms, delisting steps and changes in reporting obligations. Users can review Forms 8-K for material events, Forms 10-K and 10-Q for comprehensive financial and operational data, and the Form 25 and Form 15 for the final stages of Sitio’s life as a standalone public company.