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.
The Ambipar Emergency Response (AMBI) SEC filings page on Stock Titan brings together the company’s U.S. regulatory disclosures, with AI-powered tools to help interpret complex documents. Ambipar Emergency Response files as a foreign private issuer, using Form 20-F for its annual report and Form 6-K for current reports, and has also been the subject of a Form 25 filed by NYSE American LLC.
Through its Form 20-F annual report, the company provides audited financial statements and detailed narrative information about its activities as an environmental, emergency response and industrial field service provider. On this page, users can access that filing and use AI-generated summaries to understand key sections without reading the entire document.
The company’s numerous Form 6-K filings document important events, including judicial recovery proceedings in Brazil involving its parent, a concurrent Chapter 11 filing by Ambipar Emergency Response in the United States, interim relief and emergency measures granted by Brazilian courts, leadership and board changes, and NYSE American’s decision to commence delisting proceedings. AI analysis highlights the main points in each 6-K, such as the nature of the court protection, the scope of creditor relief, and the implications for governance.
A Form 6-K dated October 23, 2025 reports NYSE Regulation’s determination that the company was no longer suitable for listing and its plan to delist the ordinary shares and warrants. This is followed by a Form 25 dated October 29, 2025, in which NYSE American LLC notifies the removal of Ambipar Emergency Response’s Class A ordinary shares and warrants from listing and registration. The filings page allows users to review these documents in sequence and rely on AI summaries to understand the regulatory steps.
In addition to narrative summaries, this page offers structured access to forms that may include insider or related-party matters when disclosed, as well as board and committee developments. Real-time updates from EDGAR ensure that new Ambipar Emergency Response filings, such as additional Form 6-K reports or future annual reports on Form 20-F, appear promptly with AI explanations of their key content.
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.