Key facts
- AMBI - Ambipar Emergency Response has 9 insiders with reported activity on this page.
- No net insider buy/sell flow is currently reported for the last year.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 9 Insiders of Ambipar Emergency Response
- Symbol
- AMBI, AMBIQ, AMBWQ on OTC
- Location
- Sao Paulo, Brazil
Change
- No meaningful buy/sell imbalance is currently visible in the one-year window.
- Activity will update as new Forms 3/4/5 are filed.
Research use
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsInsider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 22 May 2025.
Buys
$0
Shares: 0
Insiders: 0
Sells
$0
Shares: 0
Insiders: 0
Net
$0
Shares: 0
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Ambipar Emergency Response executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Opportunity Private Equity Gestora de Recursos Ltda. | Director | $5,968,774 | Mixed | 18 Mar 2026 | ||
| Victor B. Almeida | Director | $5,968,774 | Mixed | 18 Mar 2026 | ||
| Thiago da Costa Silva | Director | Mixed | 17 Mar 2026 | |||
| Marco Antonio Zanini | Director | Mixed | 17 Mar 2026 | |||
| Tercio Borlenghi Junior | Director | Mixed | 17 Mar 2026 | |||
| Ricardo Cassio Rodrigues Chagas | CEO and CFO | Mixed | 17 Mar 2026 | |||
| David J. Mack | Director | Mixed | 18 Mar 2026 | |||
| Alessandra Bessa Alves de Melo | Director | Mixed | 17 Mar 2026 | |||
| Guilherme Patini Borlenghi | Director | Mixed | 17 Mar 2026 |
Top shareholders of Ambipar Emergency Response (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Riva Ridge Capital Management LP |
13D/G
|
— |
7.1%
|
1,235,816
|
$1,557,128 | $0 | 29 Oct 2025 | |
| Opportunity Private Equity Gestora de Recursos Ltda. |
3/4/5
|
Director |
68%
|
11,810,000
|
$5,968,774 | — | 18 Mar 2026 | |
| Victor B. Almeida |
3/4/5
|
Director |
68%
|
11,810,000
|
$5,968,774 | — | 18 Mar 2026 | |
| Turim 21 Investimentos Ltda. |
13F
|
Company |
0.74%
|
128,800
|
$6,633 | — | 31 Mar 2026 | |
| Sharp Capital Gestora de Recursos Ltda. |
13F
|
Company |
—
class O/S missing
|
1,075,000
|
$215 | — | 31 Mar 2026 |
Recent Insider Transactions by Companies or Individuals for Ambipar Emergency Response
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Victor B. Almeida | AMBI | Class A Ordinary Shares | 0 | 11,810,000 | 18 Mar 2026 | See Footnotes | ||||
| Opportunity Private Equity Gestora de Recursos Ltda. | AMBI | Class A Ordinary Shares | 0 | 11,810,000 | 18 Mar 2026 | See Footnotes |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.