AMBAC FINL GROUP INC

Ticker: OSG CUSIP: 023139884 Class: Common Stock

RHUMBLINE ADVISERS's Holding History (CIK: 0001115418)

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

Q4 2025

Shares 57,471 Value ($000) $447 Avg Close $8.55 Range $7.63 - $10.38

Q3 2025

Shares 67,170 Value ($000) $560 Avg Close $8.45 Range $6.86 - $10.05

Q2 2025

Shares 74,916 Value ($000) $532 Avg Close $7.45 Range $5.99 - $8.69

Q1 2025

Shares 69,540 Value ($000) $608 Avg Close $10.53 Range $7.92 - $12.84

Q4 2024

Shares 140,999 Value ($000) $1,784 Avg Close $12.05 Range $10.83 - $13.64

Q3 2024

Shares 132,504 Value ($000) $1,485 Avg Close $11.69 Range $10.12 - $13.32

Q2 2024

Shares 131,878 Value ($000) $1,691 Avg Close $15.25 Range $11.80 - $18.45

Q1 2024

Shares 134,449 Value ($000) $2,101 Avg Close $15.77 Range $14.53 - $17.80

Q4 2023

Shares 135,245 Value ($000) $2,229 Avg Close $13.90 Range $11.26 - $16.60

Q3 2023

Shares 145,455 Value ($000) $1,754 Avg Close $13.44 Range $11.99 - $14.64

Q2 2023

Shares 148,532 Value ($000) $2,115 Avg Close $14.63 Range $13.18 - $16.10

Q1 2023

Shares 147,616 Value ($000) $2 Avg Close $16.18 Range $14.17 - $17.75

Q4 2022

Shares 140,978 Value ($000) $2 Avg Close $14.86 Range $12.55 - $17.59

Q3 2022

Shares 139,207 Value ($000) $1,775 Avg Close $13.32 Range $11.15 - $15.59

Q2 2022

Shares 134,387 Value ($000) $1,525 Avg Close $9.49 Range $7.24 - $11.85

Q1 2022

Shares 131,313 Value ($000) $1,366 Avg Close $13.55 Range $8.14 - $16.64

Q4 2021

Shares 131,771 Value ($000) $2,115 Avg Close $15.71 Range $14.07 - $17.86

Q3 2021

Shares 129,390 Value ($000) $1,853 Avg Close $14.28 Range $13.09 - $15.94

Q2 2021

Shares 146,588 Value ($000) $2,296 Avg Close $16.07 Range $13.94 - $17.82

Q1 2021

Shares 153,162 Value ($000) $2,564 Avg Close $16.34 Range $14.13 - $18.63

Q4 2020

Shares 152,323 Value ($000) $2,343 Avg Close $14.74 Range $11.92 - $18.19

Q3 2020

Shares 140,652 Value ($000) $1,796 Avg Close $12.88 Range $11.14 - $14.75

Q2 2020

Shares 149,913 Value ($000) $2,147 Avg Close $14.62 Range $10.58 - $17.64

Q1 2020

Shares 163,994 Value ($000) $2,024 Avg Close $19.17 Range $8.74 - $22.90

Q4 2019

Shares 154,638 Value ($000) $3,336 Avg Close $20.51 Range $19.05 - $21.95

Q3 2019

Shares 145,796 Value ($000) $2,850 Avg Close $18.37 Range $16.69 - $20.74

Q2 2019

Shares 136,356 Value ($000) $2,298 Avg Close $17.07 Range $14.44 - $19.28

Q1 2019

Shares 132,129 Value ($000) $2,394 Avg Close $19.10 Range $17.01 - $21.01

Q4 2018

Shares 130,809 Value ($000) $2,255 Avg Close $18.36 Range $15.02 - $21.38

Q3 2018

Shares 108,290 Value ($000) $2,211 Avg Close $20.88 Range $19.30 - $23.34

Q2 2018

Shares 108,325 Value ($000) $2,150 Avg Close $18.46 Range $15.17 - $21.11

Q1 2018

Shares 44,796 Value ($000) $702 Avg Close $15.46 Range $13.96 - $17.09

Q4 2017

Shares 46,497 Value ($000) $743 Avg Close $15.38 Range $13.17 - $17.79

Q3 2017

Shares 54,117 Value ($000) $934 Avg Close $18.46 Range $16.75 - $22.02

Q2 2017

Shares 53,752 Value ($000) $933 Avg Close $17.77 Range $15.67 - $20.28

Q1 2017

Shares 54,307 Value ($000) $1,024 Avg Close $21.04 Range $17.39 - $23.55

Q4 2016

Shares 53,431 Value ($000) $1,202 Avg Close $21.85 Range $17.75 - $27.25

Q3 2016

Shares 54,132 Value ($000) $995 Avg Close $17.94 Range $15.42 - $19.35

Q2 2016

Shares 53,462 Value ($000) $880 Avg Close $16.04 Range $14.42 - $17.77

Q1 2016

Shares 63,986 Value ($000) $1,011 Avg Close $14.47 Range $11.92 - $17.32

Q4 2015

Shares 57,926 Value ($000) $816 Avg Close $15.37 Range $12.72 - $17.39

Q3 2015

Shares 56,226 Value ($000) $814 Avg Close $16.22 Range $14.22 - $19.17

Q2 2015

Shares 53,186 Value ($000) $885 Avg Close $23.61 Range $16.44 - $25.91

Q1 2015

Shares 58,136 Value ($000) $1,407 Avg Close $25.43 Range $23.99 - $27.53

Q4 2014

Shares 57,736 Value ($000) $1,415 Avg Close $23.29 Range $18.60 - $26.74

Q3 2014

Shares 54,936 Value ($000) $1,214 Avg Close $23.53 Range $21.86 - $27.54

Q2 2014

Shares 55,876 Value ($000) $1,526 Avg Close $29.00 Range $26.37 - $32.20

Q1 2014

Shares 51,079 Value ($000) $1,585 Avg Close $27.62 Range $22.00 - $35.61

Q4 2013

Shares 53,429 Value ($000) $1,312 Avg Close $20.94 Range $15.03 - $25.16

Q3 2013

Shares 57,619 Value ($000) $1,045 Avg Close $22.78 Range $17.64 - $25.70

Q2 2013

Shares 57,220 Value ($000) $1,364 Avg Close $24.24 Range $18.00 - $27.25

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	57,471	$447	$8.55	$7.63 - $10.38
Q3 2025	67,170	$560	$8.45	$6.86 - $10.05
Q2 2025	74,916	$532	$7.45	$5.99 - $8.69
Q1 2025	69,540	$608	$10.53	$7.92 - $12.84
Q4 2024	140,999	$1,784	$12.05	$10.83 - $13.64
Q3 2024	132,504	$1,485	$11.69	$10.12 - $13.32
Q2 2024	131,878	$1,691	$15.25	$11.80 - $18.45
Q1 2024	134,449	$2,101	$15.77	$14.53 - $17.80
Q4 2023	135,245	$2,229	$13.90	$11.26 - $16.60
Q3 2023	145,455	$1,754	$13.44	$11.99 - $14.64
Q2 2023	148,532	$2,115	$14.63	$13.18 - $16.10
Q1 2023	147,616	$2	$16.18	$14.17 - $17.75
Q4 2022	140,978	$2	$14.86	$12.55 - $17.59
Q3 2022	139,207	$1,775	$13.32	$11.15 - $15.59
Q2 2022	134,387	$1,525	$9.49	$7.24 - $11.85
Q1 2022	131,313	$1,366	$13.55	$8.14 - $16.64
Q4 2021	131,771	$2,115	$15.71	$14.07 - $17.86
Q3 2021	129,390	$1,853	$14.28	$13.09 - $15.94
Q2 2021	146,588	$2,296	$16.07	$13.94 - $17.82
Q1 2021	153,162	$2,564	$16.34	$14.13 - $18.63
Q4 2020	152,323	$2,343	$14.74	$11.92 - $18.19
Q3 2020	140,652	$1,796	$12.88	$11.14 - $14.75
Q2 2020	149,913	$2,147	$14.62	$10.58 - $17.64
Q1 2020	163,994	$2,024	$19.17	$8.74 - $22.90
Q4 2019	154,638	$3,336	$20.51	$19.05 - $21.95
Q3 2019	145,796	$2,850	$18.37	$16.69 - $20.74
Q2 2019	136,356	$2,298	$17.07	$14.44 - $19.28
Q1 2019	132,129	$2,394	$19.10	$17.01 - $21.01
Q4 2018	130,809	$2,255	$18.36	$15.02 - $21.38
Q3 2018	108,290	$2,211	$20.88	$19.30 - $23.34
Q2 2018	108,325	$2,150	$18.46	$15.17 - $21.11
Q1 2018	44,796	$702	$15.46	$13.96 - $17.09
Q4 2017	46,497	$743	$15.38	$13.17 - $17.79
Q3 2017	54,117	$934	$18.46	$16.75 - $22.02
Q2 2017	53,752	$933	$17.77	$15.67 - $20.28
Q1 2017	54,307	$1,024	$21.04	$17.39 - $23.55
Q4 2016	53,431	$1,202	$21.85	$17.75 - $27.25
Q3 2016	54,132	$995	$17.94	$15.42 - $19.35
Q2 2016	53,462	$880	$16.04	$14.42 - $17.77
Q1 2016	63,986	$1,011	$14.47	$11.92 - $17.32
Q4 2015	57,926	$816	$15.37	$12.72 - $17.39
Q3 2015	56,226	$814	$16.22	$14.22 - $19.17
Q2 2015	53,186	$885	$23.61	$16.44 - $25.91
Q1 2015	58,136	$1,407	$25.43	$23.99 - $27.53
Q4 2014	57,736	$1,415	$23.29	$18.60 - $26.74
Q3 2014	54,936	$1,214	$23.53	$21.86 - $27.54
Q2 2014	55,876	$1,526	$29.00	$26.37 - $32.20
Q1 2014	51,079	$1,585	$27.62	$22.00 - $35.61
Q4 2013	53,429	$1,312	$20.94	$15.03 - $25.16
Q3 2013	57,619	$1,045	$22.78	$17.64 - $25.70
Q2 2013	57,220	$1,364	$24.24	$18.00 - $27.25