STOCK TITAN

Ambipar Emergency Response (AMBIQ) CEO and CFO resign as interim leader named

(Neutral)
(Neutral)
Form Type
6-K

Rhea-AI Filing Summary

Ambipar Emergency Response announced leadership changes, with Ricardo Chagas resigning from his roles as Chief Executive Officer and Chief Financial Officer. The Board of Directors appointed Dennys Spencer as Interim CEO and Interim CFO, effective immediately.

Ambipar Emergency Response provides environmental services across six business units, including emergency, fire, marine, medical, industrial and environmental response, and operates in 41 countries on six continents. The company was founded in 1995 by Tércio Borlenghi Jr. and focuses on standardized service delivery worldwide.

Positive

  • None.

Negative

  • CEO and CFO resignation: Ricardo Chagas resigned from both the Chief Executive Officer and Chief Financial Officer positions, creating a leadership transition with both top executive roles changing simultaneously.
Leadership change announcement date August 5, 2026 Date Ambipar Emergency Response announced the CEO and CFO changes
Business units 6 business units Emergency, fire, marine, medical, industrial and environmental response
Countries of operation 41 countries Geographic footprint across all six continents
Year founded 1995 Year Ambipar Emergency Response was founded by Tércio Borlenghi Jr.
foreign private issuer regulatory
"FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT RULE 13a-16"
A foreign private issuer is a company organized outside the United States that meets tests showing it is primarily foreign-controlled and therefore qualifies for a different set of U.S. reporting rules. For investors, that means the company files less frequent or differently formatted disclosures with U.S. regulators and may follow home-country accounting and governance practices, so buying its stock is like dining at a well-reviewed restaurant that follows its home kitchen’s rules instead of the local menu — you get access but should check what standards apply.
Form 20-F regulatory
"whether the registrant files or will file annual reports under cover of Form 20-F"
Form 20-F is the standardized annual disclosure that non-U.S. companies must file with the U.S. securities regulator when their shares are traded in the U.S.; it contains audited financial statements, a plain-language description of the business, management discussion, governance details and key risk factors. It matters to investors because it provides a consistent, comparable company “report card” and rulebook, helping buyers assess financial health, governance and risks before investing.
forward-looking statements regulatory
"This press release contains "forward-looking statements" within the meaning"
Forward-looking statements are predictions or plans that companies share about what they expect to happen in the future, like estimating sales or profits. They matter because they help investors understand a company's outlook, but since they are based on guesses and assumptions, they can sometimes be wrong.
Private Securities Litigation Reform Act of 1995 regulatory
"within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995"

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google
Learn about SEC filing dates

FAQ

What leadership changes did Ambipar Emergency Response (AMBIQ) report?

Ambipar Emergency Response reported that Ricardo Chagas resigned as Chief Executive Officer and Chief Financial Officer. The Board simultaneously appointed Dennys Spencer as Interim CEO and Interim CFO, consolidating both top executive roles under a single interim leader.

Who is the new interim CEO and CFO of Ambipar Emergency Response (AMBIQ)?

The company appointed Dennys Spencer as Interim Chief Executive Officer and Interim Chief Financial Officer. This appointment followed the resignation of former CEO and CFO Ricardo Chagas and is described as effective immediately by the Board of Directors.

When did the leadership changes at Ambipar Emergency Response (AMBIQ) become effective?

The leadership changes became effective immediately, as stated on August 5, 2026. On that date, Ambipar Emergency Response announced the resignation of Ricardo Chagas and the simultaneous appointment of Dennys Spencer as Interim CEO and Interim CFO.

What services does Ambipar Emergency Response (AMBIQ) provide globally?

Ambipar Emergency Response provides environmental services through six business units: emergency response, fire response, marine response, medical response, industrial response and environmental response. It emphasizes standardized services across regions in its worldwide operations.

In how many countries does Ambipar Emergency Response (AMBIQ) operate?

Ambipar Emergency Response operates in 41 countries across all six continents. Its global footprint supports activities in emergency, fire, marine, medical, industrial and environmental response, with standardized service offerings across these diverse international markets.

 

 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

 

Washington, D.C. 20549

 

 

 

FORM 6-K

 

 

 

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

 

For the month of August, 2026

 

Commission File Number: 001-41638

 

 

 

AMBIPAR EMERGENCY RESPONSE

(Exact name of registrant as specified in its charter)

 

 

 

Avenida Angélica, nº 2346, 5th Floor

São Paulo, São Paulo, Brazil, 01228-200

Tel: +55 (11) 3526-3526

(Address of principal executive office)

 

 

 

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

 

Form 20-F ☒       Form 40-F ☐

 

 

 

 

 

 

Ambipar Emergency Response Announces Leadership Changes

 

São Paulo, Brazil – August 5, 2026 – Ambipar Emergency Response (“Ambipar Response” or the “Company”) announces the following leadership changes:

 

Ricardo Chagas has resigned from his positions as Chief Executive Officer and Chief Financial Officer of Ambipar Response. The Company’s Board of Directors has appointed Dennys Spencer as Interim Chief Executive Officer and Chief Financial Officer of the Company, effective immediately.

 

About Ambipar Emergency Response

 

Ambipar Response specializes in environmental services, and operates in six main business units: emergency response, fire response, marine response, medical response, industrial response and environmental response. The Company is present in 41 countries across all six continents, providing standardized services across all regions.

 

The Company was founded in 1995 by Tércio Borlenghi Jr. For more information, visit ambipar.com and http://ir-response.ambipar.com/

 

Forward-Looking Statements

 

This press release contains “forward-looking statements” within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are made only as of the date they first issued and are based on current expectations, estimates, forecasts and projections as well as the beliefs and assumptions of management. These statements identify prospective information and may include words such as “believe,” “may,” “will,” “aim,” “estimate,” “continue,” “anticipate,” “intend,” “expect,” “forecast,” “plan,” “predict,” “project,” “potential,” “aspiration,” “objectives,” “should,” “purpose,” “belief,” and similar, or variations of, or the negative of such words and expressions, although not all forward-looking statements contain these identifying words.

 

Forward-looking statements are subject to a number of risks and uncertainties, many of which involve factors or circumstances that are beyond Ambipar Response’s control.

 

Ambipar Response’s actual results could differ materially from those stated or implied in forward-looking statements due to a number of factors, including but not limited to: more intense competition than expected, lower addition of new clients, regulatory measures, more investments in our business than expected, and our inability to execute successfully upon our strategic initiatives, among other factors described in “Item 3.D—Key Information--Risk Factors” of Ambipar Response’s annual report on Form 20-F for the year ended December 31, 2025 and other public filings it makes with the Securities and Exchange Commission. Ambipar Response does not undertake any obligation to update or revise any forward-looking statements to reflect any change in its expectations with respect to such statements or any changes in events, conditions or circumstances after the date they were made, whether as a result of new information, future events or otherwise, except as may be required under applicable securities laws.

 

Investor Relations Contact:

 

Email: ir.response@ambipar.com

 

1

 

 

SIGNATURE

 

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 

Date: August 5, 2026

 

AMBIPAR EMERGENCY RESPONSE  
     
By: /s/ Thiago da Costa Silva  
Name:  Thiago da Costa Silva  
Title: Director  

 

2