Welcome to our dedicated page for AMBIPAR EMERGENCY RESPONSE SEC filings (Ticker: AMBI), 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.
Ambipar Emergency Response's SEC filings document its foreign private issuer reporting, public securities, governance actions, and corporate-status events. Form 20-F materials cover annual reporting and audited financial statements for the environmental, emergency response and industrial field service business, while Form 6-K reports furnish current disclosures to U.S. regulators.
The filing record includes court-supervised insolvency disclosures involving judicial recovery proceedings in Brazil and a Chapter 11 action in the United States, along with NYSE American removal proceedings for Class A ordinary shares and warrants. Other current reports address board composition, the appointment of an independent director, formation of an independent special committee, related-party conflict review, and reporting obligations under SEC rules.
Ambipar Emergency Response director Victor B. Almeida filed an initial ownership report showing indirect exposure to the company through an investment fund. The filing states that Opportunity Dinamico Fundo de Investimento em Participacoes Multiestrategia Responsabilidade Limitada directly holds 11,810,000 Class A Ordinary Shares and 2,280,000 Warrants of Ambipar Emergency Response, managed by Opportunity Private Equity Gestora de Recursos Ltda. Each Warrant is exercisable into one Ordinary Share at an exercise price of $11.50 and expires on March 3, 2028. Almeida serves on the board as OPEG’s representative, is a partner holding less than 10% of OPEG and an indirect investor in the fund, and expressly disclaims beneficial ownership of these securities except to the extent of his pecuniary interest.
Opportunity Private Equity Gestora de Recursos Ltda. (OPEG) filed an initial Form 3 for Ambipar Emergency Response, reporting indirect holdings through a managed fund. The fund directly owns 11,810,000 Class A Ordinary Shares and 2,280,000 Warrants.
The Warrants are exercisable into one Ordinary Share at an exercise price of $11.50 per share and expire on March 3, 2028. OPEG disclaims beneficial ownership of these securities except to the extent of its pecuniary interest, while acting as investment manager and directing voting and disposition.
Ambipar Emergency Response executive Chagas Ricardo, who serves as CEO and CFO, filed an initial Form 3 reporting his beneficial ownership in the company. This filing is a baseline disclosure of his holdings as an officer and does not report any buy or sell transactions.
Ambipar Emergency Response director de Melo Alessandra Bessa Alves filed an initial ownership report on Form 3. The filing establishes her status as a director of the company but does not list any share transactions or derivative positions. It is an administrative disclosure of insider status rather than a trading activity report.
Ambipar Emergency Response filed an initial Form 3 for director Zanini Marco Antonio, reporting his status as an insider of the company. The structured data show no purchases, sales, gifts, option exercises, or other equity transactions or derivative positions reported in connection with this filing.
Ambipar Emergency Response director files initial ownership report. Director Silva Thiago da Costa submitted a Form 3, which is an initial statement of beneficial ownership of company securities. The filing reports no recent purchases, sales, or other transactions and shows no derivative positions disclosed in this report.
Ambipar Emergency Response director files initial ownership report
Ambipar Emergency Response director Borlenghi Guilherme Patini has filed a Form 3, which is the initial statement of beneficial ownership for company insiders. The filing reports no transactions or derivative positions, serving only to establish his status as a reporting director.
Ambipar Emergency Response director Borlenghi Tercio Junior filed an initial ownership report showing indirect holdings of Class B ordinary shares. These Class B shares are convertible into an equal number of Class A ordinary shares at any time, and also automatically convert to Class A upon most transfers, with no expiration on these conversion rights. The filing attributes the position to Ambipar Participations & Enterprises S.A., which is controlled by the reporting person, who formally disclaims beneficial ownership beyond any pecuniary interest.
Ambipar Emergency Response (AMBI): Schedule 13G filed reporting that Riva Ridge Capital Management LP, Riva Ridge Master Fund, Ltd., Riva Ridge GP LLC, Stephen Golden, and Peter Finelli beneficially own 1,235,816 Class A Ordinary Shares, representing 7.1% of the class.
The reported amount includes 1,137,810 warrants, each exercisable for one Class A Ordinary Share. The filers report shared voting and dispositive power over 1,235,816 and no sole power. The securities are held by advisory clients of Riva Ridge Capital Management LP; among them, Riva Ridge Master Fund, Ltd. is identified as potentially holding more than 5%. The certification states the holdings were not acquired to change or influence control. The event date is October 29, 2025.
Ambipar Emergency Response (AMBI) reported a legal update: the Third Business Court of the Capital of Rio de Janeiro approved the judicial recovery proceedings of its parent company, Ambipar Participações e Empreendimentos S.A., on October 30, 2025. The parent’s filing had been previously communicated on October 20, 2025.
Ambipar Emergency Response provides environmental and emergency services across six business units and operates in 41 countries. The company was founded in 1995 by Tércio Borlenghi Jr.