AMBAC FINL GROUP INC

Ticker: OSG CUSIP: 023139884 Class: Common Stock

CITIGROUP INC's Holding History (CIK: 0000831001)

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

Q4 2025

Shares 7,098 Value ($000) $55 Avg Close $8.55 Range $7.63 - $10.38

Q3 2025

Shares 9,341 Value ($000) $78 Avg Close $8.45 Range $6.86 - $10.05

Q2 2025

Shares 23,031 Value ($000) $164 Avg Close $7.45 Range $5.99 - $8.69

Q1 2025

Shares 48,416 Value ($000) $424 Avg Close $10.53 Range $7.92 - $12.84

Q4 2024

Shares 70,618 Value ($000) $893 Avg Close $12.05 Range $10.83 - $13.64

Q3 2024

Shares 57,643 Value ($000) $646 Avg Close $11.69 Range $10.12 - $13.32

Q2 2024

Shares 45,677 Value ($000) $586 Avg Close $15.25 Range $11.80 - $18.45

Q1 2024

Shares 31,000 Value ($000) $485 Avg Close $15.77 Range $14.53 - $17.80

Q4 2023

Shares 28,016 Value ($000) $462 Avg Close $13.90 Range $11.26 - $16.60

Q3 2023

Shares 19,134 Value ($000) $231 Avg Close $13.44 Range $11.99 - $14.64

Q2 2023

Shares 39,932 Value ($000) $569 Avg Close $14.63 Range $13.18 - $16.10

Q1 2023

Shares 27,200 Value ($000) $421 Avg Close $16.18 Range $14.17 - $17.75

Q4 2022

Shares 32,065 Value ($000) $559 Avg Close $14.86 Range $12.55 - $17.59

Q3 2022

Shares 21,310 Value ($000) $272 Avg Close $13.32 Range $11.15 - $15.59

Q2 2022

Shares 20,126 Value ($000) $228 Avg Close $9.49 Range $7.24 - $11.85

Q1 2022

Shares 40,226 Value ($000) $418 Avg Close $13.55 Range $8.14 - $16.64

Q4 2021

Shares 35,266 Value ($000) $566 Avg Close $15.71 Range $14.07 - $17.86

Q3 2021

Shares 327,387 Value ($000) $4,688 Avg Close $14.28 Range $13.09 - $15.94

Q2 2021

Shares 722,781 Value ($000) $11,319 Avg Close $16.07 Range $13.94 - $17.82

Q1 2021

Shares 722,416 Value ($000) $12,093 Avg Close $16.34 Range $14.13 - $18.63

Q4 2020

Shares 901,190 Value ($000) $13,860 Avg Close $14.74 Range $11.92 - $18.19

Q3 2020

Shares 880,323 Value ($000) $11,242 Avg Close $12.88 Range $11.14 - $14.75

Q2 2020

Shares 898,692 Value ($000) $12,869 Avg Close $14.62 Range $10.58 - $17.64

Q1 2020

Shares 892,487 Value ($000) $11,013 Avg Close $19.17 Range $8.74 - $22.90

Q4 2019

Shares 1,494,262 Value ($000) $32,231 Avg Close $20.51 Range $19.05 - $21.95

Q3 2019

Shares 889,651 Value ($000) $17,393 Avg Close $18.37 Range $16.69 - $20.74

Q2 2019

Shares 894,726 Value ($000) $15,076 Avg Close $17.07 Range $14.44 - $19.28

Q1 2019

Shares 907,801 Value ($000) $16,449 Avg Close $19.10 Range $17.01 - $21.01

Q4 2018

Shares 832,064 Value ($000) $14,345 Avg Close $18.36 Range $15.02 - $21.38

Q3 2018

Shares 821,117 Value ($000) $16,767 Avg Close $20.88 Range $19.30 - $23.34

Q2 2018

Shares 779,297 Value ($000) $15,470 Avg Close $18.46 Range $15.17 - $21.11

Q1 2018

Shares 822,308 Value ($000) $12,892 Avg Close $15.46 Range $13.96 - $17.09

Q4 2017

Shares 826,899 Value ($000) $13,214 Avg Close $15.38 Range $13.17 - $17.79

Q3 2017

Shares 356 Value ($000) $6 Avg Close $18.46 Range $16.75 - $22.02

Q2 2017

Shares 11,024 Value ($000) $191 Avg Close $17.77 Range $15.67 - $20.28

Q1 2017

Shares 1,620 Value ($000) $30 Avg Close $21.04 Range $17.39 - $23.55

Q4 2016

Shares 47,926 Value ($000) $1,079 Avg Close $21.85 Range $17.75 - $27.25

Q3 2016

Shares 6,507 Value ($000) $120 Avg Close $17.94 Range $15.42 - $19.35

Q2 2016

Shares 7,951 Value ($000) $132 Avg Close $16.04 Range $14.42 - $17.77

Q1 2016

Shares 44,881 Value ($000) $709 Avg Close $14.47 Range $11.92 - $17.32

Q4 2015

Shares 20,164 Value ($000) $283 Avg Close $15.37 Range $12.72 - $17.39

Q3 2015

Shares 3,095 Value ($000) $45 Avg Close $16.22 Range $14.22 - $19.17

Q2 2015

Shares 1,535 Value ($000) $26 Avg Close $23.61 Range $16.44 - $25.91

Q1 2015

Shares 7,989 Value ($000) $193 Avg Close $25.43 Range $23.99 - $27.53

Q4 2014

Shares 13,425 Value ($000) $329 Avg Close $23.29 Range $18.60 - $26.74

Q3 2014

Shares 6,678 Value ($000) $148 Avg Close $23.53 Range $21.86 - $27.54

Q2 2014

Shares 5,509 Value ($000) $150 Avg Close $29.00 Range $26.37 - $32.20

Q1 2014

Shares 12,538 Value ($000) $389 Avg Close $27.62 Range $22.00 - $35.61

Q4 2013

Shares 30,662 Value ($000) $753 Avg Close $20.94 Range $15.03 - $25.16

Q3 2013

Shares 8,585 Value ($000) $155 Avg Close $22.78 Range $17.64 - $25.70

Q2 2013

Shares 169,931 Value ($000) $4,049 Avg Close $24.24 Range $18.00 - $27.25

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	7,098	$55	$8.55	$7.63 - $10.38
Q3 2025	9,341	$78	$8.45	$6.86 - $10.05
Q2 2025	23,031	$164	$7.45	$5.99 - $8.69
Q1 2025	48,416	$424	$10.53	$7.92 - $12.84
Q4 2024	70,618	$893	$12.05	$10.83 - $13.64
Q3 2024	57,643	$646	$11.69	$10.12 - $13.32
Q2 2024	45,677	$586	$15.25	$11.80 - $18.45
Q1 2024	31,000	$485	$15.77	$14.53 - $17.80
Q4 2023	28,016	$462	$13.90	$11.26 - $16.60
Q3 2023	19,134	$231	$13.44	$11.99 - $14.64
Q2 2023	39,932	$569	$14.63	$13.18 - $16.10
Q1 2023	27,200	$421	$16.18	$14.17 - $17.75
Q4 2022	32,065	$559	$14.86	$12.55 - $17.59
Q3 2022	21,310	$272	$13.32	$11.15 - $15.59
Q2 2022	20,126	$228	$9.49	$7.24 - $11.85
Q1 2022	40,226	$418	$13.55	$8.14 - $16.64
Q4 2021	35,266	$566	$15.71	$14.07 - $17.86
Q3 2021	327,387	$4,688	$14.28	$13.09 - $15.94
Q2 2021	722,781	$11,319	$16.07	$13.94 - $17.82
Q1 2021	722,416	$12,093	$16.34	$14.13 - $18.63
Q4 2020	901,190	$13,860	$14.74	$11.92 - $18.19
Q3 2020	880,323	$11,242	$12.88	$11.14 - $14.75
Q2 2020	898,692	$12,869	$14.62	$10.58 - $17.64
Q1 2020	892,487	$11,013	$19.17	$8.74 - $22.90
Q4 2019	1,494,262	$32,231	$20.51	$19.05 - $21.95
Q3 2019	889,651	$17,393	$18.37	$16.69 - $20.74
Q2 2019	894,726	$15,076	$17.07	$14.44 - $19.28
Q1 2019	907,801	$16,449	$19.10	$17.01 - $21.01
Q4 2018	832,064	$14,345	$18.36	$15.02 - $21.38
Q3 2018	821,117	$16,767	$20.88	$19.30 - $23.34
Q2 2018	779,297	$15,470	$18.46	$15.17 - $21.11
Q1 2018	822,308	$12,892	$15.46	$13.96 - $17.09
Q4 2017	826,899	$13,214	$15.38	$13.17 - $17.79
Q3 2017	356	$6	$18.46	$16.75 - $22.02
Q2 2017	11,024	$191	$17.77	$15.67 - $20.28
Q1 2017	1,620	$30	$21.04	$17.39 - $23.55
Q4 2016	47,926	$1,079	$21.85	$17.75 - $27.25
Q3 2016	6,507	$120	$17.94	$15.42 - $19.35
Q2 2016	7,951	$132	$16.04	$14.42 - $17.77
Q1 2016	44,881	$709	$14.47	$11.92 - $17.32
Q4 2015	20,164	$283	$15.37	$12.72 - $17.39
Q3 2015	3,095	$45	$16.22	$14.22 - $19.17
Q2 2015	1,535	$26	$23.61	$16.44 - $25.91
Q1 2015	7,989	$193	$25.43	$23.99 - $27.53
Q4 2014	13,425	$329	$23.29	$18.60 - $26.74
Q3 2014	6,678	$148	$23.53	$21.86 - $27.54
Q2 2014	5,509	$150	$29.00	$26.37 - $32.20
Q1 2014	12,538	$389	$27.62	$22.00 - $35.61
Q4 2013	30,662	$753	$20.94	$15.03 - $25.16
Q3 2013	8,585	$155	$22.78	$17.64 - $25.70
Q2 2013	169,931	$4,049	$24.24	$18.00 - $27.25