SCHEDULE: ADAR1 Capital Management Discloses 5.4% Stake in JATT II Acquisition Corp.

ADAR1 Capital Management, LLC and its manager Daniel Schneeberger have jointly filed a Schedule 13G, reporting beneficial ownership of 417,724 Ordinary Shares, representing 5.4% of the outstanding shares of JATT II Acquisition Corp.

Summary

• ADAR1 Capital Management, LLC and Daniel Schneeberger have jointly filed a Schedule 13G, indicating their beneficial ownership of JATT II Acquisition Corp. Ordinary Shares.
• The filing reports ownership of 417,724 Ordinary Shares, which constitutes 5.4% of the total outstanding shares.
• This ownership is held through private investment funds managed by ADAR1 Capital Management, LLC.
• Daniel Schneeberger, as the sole manager of ADAR1 Capital Management, LLC, is deemed to indirectly beneficially own these shares.
• The filing is made in accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, signifying a joint filing agreement.
• The information is based on the company's outstanding shares as of June 30, 2026, as reported in their Form 10-Q filed on August 13, 2026.

Sentiment

Score: 7

Explanation: StockSavvy.ai views this as a neutral to slightly positive filing, primarily indicating a significant but expected ownership stake by an investment manager and its principal. The filing confirms a substantial holding without suggesting aggressive action, which is typical for Schedule 13G filings.

Positives

• Confirmation of a significant ownership stake (5.4%) by a professional investment manager (ADAR1 Capital Management) and its principal (Daniel Schneeberger).
• The filing is a Schedule 13G, which typically indicates passive investment rather than a hostile takeover attempt.
• The reporting is up-to-date as of June 30, 2026, with the filing date of August 14, 2026.

Negatives

• No specific negative financial or operational information is presented in this type of filing.
• The filing does not provide details on the investment strategy or future intentions beyond passive ownership.

Risks

• The primary risk is that the investment thesis for JATT II Acquisition Corp. may not materialize as expected by the reporting persons.
• Potential for future changes in ownership or strategy by ADAR1 Capital Management, though not indicated in this filing.

Future Outlook

This filing is a Schedule 13G, which is an informational filing regarding beneficial ownership and does not typically contain forward-looking statements or specific guidance from the company itself. The future outlook for JATT II Acquisition Corp. would be found in its own periodic filings.

Management Comments

• "The amounts reported in boxes 6, 8, and 9 represent 417,724 shares of ordinary shares, par value $0.0001 per share ('Ordinary Shares'), of JATT II Acquisition Corp (the 'Issuer') owned directly by private investment funds managed by ADAR1 Capital Management, LLC."
• "Such securities may be deemed to be indirectly beneficially owned by ADAR1 Capital Management, LLC."
• "Such securities may be deemed to be indirectly beneficially owned by Daniel Schneeberger, the sole manager of ADAR1 Capital Management, LLC."
• "By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under 240.14a-11."

Industry Context

StockSavvy.ai notes that JATT II Acquisition Corp. is likely a Special Purpose Acquisition Company (SPAC). Schedule 13G filings are common for institutional investors and fund managers accumulating stakes in SPACs, often prior to or following a business combination announcement. The 5.4% stake is a significant but not controlling position.

Stakeholder Impact

• Shareholders: The filing provides transparency on a significant institutional investor's stake, which may influence market perception.
• Management of JATT II Acquisition Corp.: The filing confirms a substantial passive investor, which could be viewed positively if the investor is seen as a stable holder.

Next Steps

• ADAR1 Capital Management, LLC and Daniel Schneeberger will continue to hold their shares in JATT II Acquisition Corp.
• Future actions will depend on the strategic direction and business combination activities of JATT II Acquisition Corp.

Key Dates

Keywords

JATT II Acquisition Corp., ADAR1 Capital Management, Schedule 13G, Ordinary Shares, Beneficial Ownership, Investment Management, SPAC