SCHEDULE: Riva Ridge Capital Discloses 7.1% Stake in Ambipar

Sentiment:

Beneficial Ownership Report


Riva Ridge Capital Management LP and its affiliates have reported a 7.1% beneficial ownership stake in Ambipar Emergency Response's Class A Ordinary Shares.

Summary

  • Riva Ridge Capital Management LP, along with Riva Ridge Master Fund, Ltd., Riva Ridge GP LLC, Stephen Golden, and Peter Finelli, collectively reported beneficial ownership of 1,235,816 Class A Ordinary Shares of Ambipar Emergency Response.
  • This ownership represents 7.1% of the Class A Ordinary Shares outstanding.
  • The reported shares include 1,137,810 warrants, each exercisable for one Class A Ordinary Share.
  • The reporting persons share both voting and dispositive power over all 1,235,816 shares.
  • The filing was made under Rule 13d-1(b), indicating that the reporting persons are institutional investors and are not seeking to change or influence control of the issuer.

Sentiment

Score: 6

Explanation: The filing is a factual disclosure of beneficial ownership by an institutional investor, which is generally a neutral to slightly positive signal for a company. It does not contain performance data or forward-looking statements to significantly sway sentiment.

Positives

  • Institutional investor Riva Ridge Capital Management LP has taken a significant 7.1% stake in Ambipar Emergency Response, potentially signaling confidence in the company.
  • The investment includes a substantial number of warrants (1,137,810), indicating a potential future increase in direct share ownership.

Future Outlook

This beneficial ownership report does not contain any forward-looking statements or guidance.

Management Comments

  • Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his, her or its pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.
  • By signing below I certify that, to the best of my knowledge and belief, the securities referred to above 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 ยงยง 240.14a-11.

Industry Context

This filing indicates an institutional investor's interest in Ambipar Emergency Response, a company likely operating in emergency response or environmental services. Such disclosures are common and reflect ongoing investment activity in the market.

Related Party Transactions

  • Riva Ridge Master Fund, Ltd. is an advisory client of Riva Ridge Capital Management LP and directly owns the reported securities, representing a related party relationship within the reporting group.

Stakeholder Impact

  • Shareholders: Provides transparency regarding significant institutional ownership, which can be viewed positively as a vote of confidence.
  • Management: Awareness of a significant institutional shareholder.

Key Dates

DateDescription
10/29/2025Date of event requiring the filing of this statement.
11/05/2025Date of filing of this statement.

Keywords

Ambipar Emergency Response, Riva Ridge Capital Management, Schedule 13G, beneficial ownership, Class A Ordinary Shares, institutional investment, warrants, G02532102

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