Security key
G02532102
Ambipar Emergency Response - Class A Ordinary Shares, par value $0.0001 per share (AMBIQ)
CUSIP: G02532102
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Class A Ordinary Shares, par value $0.0001 per share
- Total 13F shares
- 128,800
- Total 13F value
- $6,633
- Share change
- -56,200
- SEC-reported price per share
- $0.05
- Number of holders
- 1
- Value change
- -$23,000
- Number of sells
- 1
- Shares outstanding
- 17,405,859
Holder snapshot
5 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
1
Top holders
1
AMBIQ full security history
Ownership snapshot
Full 13F holder table
Previous quarter: Q4 2025
Ambipar Emergency Response SEC filings
Ambipar Emergency Response company facts
Broader feeds
Reporting periods
Holder history for CUSIP G02532102
Recent filing periods:
Ownership snapshot
Top reported holders of AMBIQ - Ambipar Emergency Response - Class A Ordinary Shares, par value $0.0001 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Riva Ridge Capital Manage...
Disclosed value leader
Opportunity Private Equit...
Comparable rows
5/7
Latest evidence
18 Mar 2026
13D/G
3/4/5
13F
Lead comparable stake: 7.1%
2 rows are not safely comparable across share classes.
13D/G row: Riva Ridge Capital Management LP
Showing 1-6 of 7 holder rows.
Quick read
Riva Ridge Capital Management LP leads the comparable SEC ownership view at 7.1%.
5 of 7 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Riva Ridge Capital Management LP's linked filing trail.
Comparable ownership
Top 5
Riva Ridge Capital Management LP
7.1%
Opportunity Private Equity Gestor...
68%
Victor B. Almeida
68%
Turim 21 Investimentos Ltda.
0.74%
FNY Investment Advisers, LLC
0.32%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 7 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Riva Ridge Capital Management LP |
13D/G
|
7.1%
|
$1,557,128
1,235,816 shares
|
$0 | 29 Oct 2025 |
| Opportunity Private Equity Gestora de Recursos Ltda. |
3/4/5
Director
|
68%
|
$5,968,774
11,810,000 shares
|
— | 18 Mar 2026 |
| Victor B. Almeida |
3/4/5
Director
|
68%
|
$5,968,774
11,810,000 shares
|
— | 18 Mar 2026 |
| Turim 21 Investimentos Ltda. |
13F
Company
|
0.74%
|
$77,486
128,800 shares
|
— | 31 Dec 2025 |
| FNY Investment Advisers, LLC |
13F
Company
|
0.32%
|
$23,000
56,200 shares
|
— | 31 Dec 2025 |
| Sharp Capital Gestora de Recursos Ltda. |
13F
Company
|
—
class O/S missing
|
$5,268
1,075,000 shares
|
— | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
1
Shares
128,800
Rows available
1
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
2
Q1 2026 holders
1
Holder diff
-1
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend