SCHEDULE: Adage Capital Management Discloses Nine Energy Service Stake

Adage Capital Management, L.P., along with individuals Robert Atchinson and Phillip Gross, has filed a Schedule 13G, reporting beneficial ownership of 9.71% of Nine Energy Service, Inc. common stock as of March 31, 2026.

Summary

• Adage Capital Management, L.P. (ACM), through its general partner Adage Capital Partners, L.P. (ACP), and individuals Robert Atchinson and Phillip Gross, have jointly filed a Schedule 13G.
• The filing reports beneficial ownership of 1,355,149 shares of Nine Energy Service, Inc. common stock.
• This ownership represents 9.71% of the company's outstanding common stock as of March 31, 2026.
• The reporting persons have shared voting and dispositive power over these shares.
• The filing date for this statement is July 9, 2026, with the event requiring the filing occurring on March 31, 2026.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral filing, as it is a routine disclosure of beneficial ownership and does not provide operational or financial performance updates.

Positives

• Significant stake: Adage Capital Management has acquired a substantial ownership position of 9.71% in Nine Energy Service, Inc., indicating a strong conviction in the company's value or future prospects.
• Clear disclosure: The filing provides a transparent disclosure of beneficial ownership, adhering to regulatory requirements.

Risks

• Concentration risk: Holding a significant percentage of a single company's stock can expose investors to substantial risk if that company underperforms.
• Market volatility: The value of the investment is subject to the general volatility of the stock market and the specific performance of Nine Energy Service, Inc.

Future Outlook

This filing is a disclosure of beneficial ownership and does not contain forward-looking statements or guidance from Nine Energy Service, Inc. or Adage Capital Management regarding future performance.

Management Comments

• "The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate."

Industry Context

StockSavvy.ai notes that significant stake disclosures via Schedule 13G filings often signal a shift in institutional ownership or a strategic investment by an asset manager in the energy services sector, which can be influenced by commodity prices and drilling activity.

Stakeholder Impact

• Shareholders: May view the increased institutional ownership positively, potentially leading to greater scrutiny of management and improved corporate governance, or negatively if Adage Capital Management's intentions are perceived as hostile.
• Management of Nine Energy Service, Inc.: May face increased pressure or engagement from Adage Capital Management regarding company strategy and performance.
• Creditors: The stability of the company's ownership structure can indirectly impact creditor confidence.

Next Steps

• Adage Capital Management, L.P., Robert Atchinson, and Phillip Gross will be responsible for filing any subsequent amendments to this Schedule 13G.
• Nine Energy Service, Inc. will continue its operations as disclosed in its other SEC filings.

Key Dates

Recommendation

This filing is a disclosure of beneficial ownership and does not contain sufficient operational or financial information to warrant a buy or sell recommendation. It indicates a significant investment by Adage Capital Management, suggesting their belief in the company's value, but without further performance data, a 'hold' is prudent pending more information.

Keywords

Nine Energy Service, Schedule 13G, Adage Capital Management, Beneficial Ownership, SEC Filing, Common Stock, Investment Management, Robert Atchinson, Phillip Gross