Ambipar Emergency Response - Class A Ordinary Shares, par value $0.0001 per share (AMBIQ)

Q: What does CUSIP G02532102 represent in this 13F holders report?

CUSIP G02532102 is the security identifier for AMBIQ - Ambipar Emergency Response - Class A Ordinary Shares, par value $0.0001 per share used to aggregate holder disclosures.

Q: How many institutions held AMBIQ - Ambipar Emergency Response - Class A Ordinary Shares, par value $0.0001 per share in Q4 2025?

2 institutional investors reported AMBIQ - Ambipar Emergency Response - Class A Ordinary Shares, par value $0.0001 per share for Q4 2025. Use the holders table for investor-level position and value details.

CUSIP: G02532102

Q4 2025 13F Holders as of 31 Dec 2025

Security type / class: Equity / Class A Ordinary Shares, par value $0.0001 per share
Total 13F shares: 185,000
Total 13F value: $100,486
Share change: +6,144
SEC-reported price per share: $0.51
Number of holders: 2
Value change: -$3,119
Number of buys: 2
Number of sells: 3
Shares outstanding: 17,405,859

Security key

G02532102

Report period

Q4 2025

Institutions

Top holders

AMBIQ full security history Ownership snapshot Full 13F holder table Newer quarter: Q1 2026 Previous quarter: Q3 2025 Ambipar Emergency Response SEC filings Ambipar Emergency Response company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP G02532102

Newer quarter: Q1 2026 Previous quarter: Q3 2025

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025

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

Riva Ridge Capital Manage...

Comparable rows

5/15

Latest evidence

29 Oct 2025

13D/G 13F Lead comparable stake: 7.1% 10 rows are not safely comparable across share classes. 13D/G row: Riva Ridge Capital Management LP Showing 1-6 of 15 holder rows.

Quick read

Riva Ridge Capital Management LP leads the comparable SEC ownership view at 7.1%.

5 of 15 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%

Turim 21 Investimentos Ltda. 0.63%

FNY Investment Advisers, LLC 0.26%

NORTHERN TRUST CORP 0.1%

SBI Securities Co., Ltd. 0%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Riva Ridge Capital Management LP	13D/G 13D/G	7.1%	$1,557,128 1,235,816 shares	$0	29 Oct 2025
Turim 21 Investimentos Ltda.	13F Company 13F	0.63%	$87,051 108,800 shares	—	30 Sep 2025
FNY Investment Advisers, LLC	13F Company 13F	0.26%	$36,000 45,800 shares	—	30 Sep 2025
NORTHERN TRUST CORP	13F Company 13F	0.1%	$14,092 17,613 shares	—	30 Sep 2025
SBI Securities Co., Ltd.	13F Company 13F	0%	$1 1 shares	—	30 Sep 2025
SPX Gestao de Recursos Ltda	13F Company 13F	— mixed-class rows	$72,219 1,599,607 shares mixed-class rows	—	30 Sep 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 Q4 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

185,000

Rows available

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 Q4 2025 vs Q3 2025 Across Filers

Q3 2025 holders

Q4 2025 holders

Holder diff

-3

Investor	Q3 2025 Shares	Q4 2025 Shares	Share Diff	Share Chg %	Q3 2025 value	Q4 2025 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend