SCHEDULE: Adage Capital Management Discloses Stake in SUMA Acquisition Corp.

Adage Capital Management, L.P., along with individuals Robert Atchinson and Phillip Gross, has reported beneficial ownership of 7.63% of SUMA Acquisition Corporation's Class A ordinary shares.

Summary

• Adage Capital Management, L.P. (ACM), through its general partner Adage Capital Partners, L.L.C., and individuals Robert Atchinson and Phillip Gross, have jointly filed a Schedule 13G.
• This filing indicates beneficial ownership of 1,350,000 Class A ordinary shares of SUMA Acquisition Corporation.
• This holding represents 7.63% of the total outstanding Class A ordinary shares, based on 17,696,250 shares outstanding as of March 12, 2026.
• The filing date for this statement is May 13, 2026, with the event requiring the filing occurring on March 31, 2026.
• The reporting persons are Adage Capital Management, L.P. (organized in Delaware), Robert Atchinson (US citizen), and Phillip Gross (US citizen).

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 data.

Positives

• Significant stake of 7.63% in SUMA Acquisition Corporation's Class A ordinary shares reported by a notable investment manager.
• Clear disclosure of beneficial ownership, providing transparency to the market.

Negatives

• No financial performance data or operational updates are included in this specific filing, as it is purely a beneficial ownership disclosure.

Risks

• The filing does not explicitly mention any risks. However, as with any investment in a special purpose acquisition company (SPAC) like SUMA Acquisition Corporation, risks are inherent, including the potential failure to complete a business combination within the specified timeframe, dilution from future financings, and the general market risks associated with the target industry.

Future Outlook

This filing is a disclosure of beneficial ownership and does not contain forward-looking statements or guidance regarding the company's future performance or strategic plans.

Management Comments

• The filing includes a joint acquisition statement acknowledging responsibility for timely filing of amendments and the completeness and accuracy of information concerning themselves, but not for others, except to the extent they know or have reason to believe information is inaccurate.

Industry Context

StockSavvy.ai notes that this Schedule 13G filing by Adage Capital Management, L.P. indicates a significant investment in SUMA Acquisition Corporation, a special purpose acquisition company (SPAC). Such filings are common as investment firms build positions in SPACs, often ahead of or following a business combination announcement. The 7.63% stake suggests a notable conviction in the SPAC's strategy or target.

Stakeholder Impact

• Shareholders: Increased transparency regarding significant ownership stakes, potentially influencing market perception and trading activity.
• Management of SUMA Acquisition Corporation: Awareness of a substantial institutional investor's position.

Next Steps

• Adage Capital Management, L.P., Robert Atchinson, and Phillip Gross are responsible for filing any subsequent amendments to this Schedule 13G statement.

Key Dates

Keywords

Schedule 13G, Adage Capital Management, SUMA Acquisition Corporation, Class A ordinary shares, Beneficial Ownership, SPAC, SEC Filing, Robert Atchinson, Phillip Gross