AMBAC FINL GROUP INC

Ticker: OSG CUSIP: 023139884 Class: Common Stock

NATIONAL BANK OF CANADA /FI/'s Holding History (CIK: 0000926171)

Note: Option positions (PUT/CALL) are excluded.

Q3 2025

Shares 385 Value ($000) $3 Avg Close $8.45 Range $6.86 - $10.05

Q2 2025

Shares 7 Value ($000) $0 Avg Close $7.45 Range $5.99 - $8.69

Q1 2023

Shares 80,000 Value ($000) $1,238 Avg Close $16.18 Range $14.17 - $17.75

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	385	$3	$8.45	$6.86 - $10.05
Q2 2025	7	$0	$7.45	$5.99 - $8.69
Q1 2023	80,000	$1,238	$16.18	$14.17 - $17.75