OTTER TAIL CORP

Ticker: OTTR CUSIP: 689648103 Class: Common Stock

AMERICAN CENTURY COMPANIES INC's Holding History (CIK: 0000748054)

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

Q4 2025

Shares 39,917 Value ($000) $3,226 Avg Close $80.23 Range $73.20 - $85.91

Q3 2025

Shares 16,106 Value ($000) $1,320 Avg Close $79.81 Range $73.77 - $85.12

Q2 2025

Shares 15,726 Value ($000) $1,212 Avg Close $76.31 Range $69.94 - $79.78

Q1 2025

Shares 14,809 Value ($000) $1,190 Avg Close $76.90 Range $69.36 - $83.20

Q4 2024

Shares 14,881 Value ($000) $1,099 Avg Close $75.57 Range $70.66 - $85.02

Q3 2024

Shares 24,428 Value ($000) $1,909 Avg Close $83.04 Range $72.06 - $96.51

Q2 2024

Shares 20,583 Value ($000) $1,803 Avg Close $83.59 Range $77.75 - $92.55

Q1 2024

Shares 17,693 Value ($000) $1,529 Avg Close $82.56 Range $76.18 - $94.24

Q4 2023

Shares 18,425 Value ($000) $1,566 Avg Close $72.94 Range $64.95 - $84.21

Q3 2023

Shares 24,552 Value ($000) $1,864 Avg Close $77.16 Range $70.28 - $86.93

Q2 2023

Shares 26,293 Value ($000) $2,076 Avg Close $70.21 Range $64.41 - $74.69

Q1 2023

Shares 27,013 Value ($000) $1,952 Avg Close $61.74 Range $53.03 - $68.09

Q4 2022

Shares 26,830 Value ($000) $1,575 Avg Close $55.25 Range $48.33 - $63.55

Q3 2022

Shares 26,806 Value ($000) $1,649 Avg Close $66.11 Range $56.18 - $75.76

Q2 2022

Shares 37,534 Value ($000) $2,520 Avg Close $57.93 Range $52.29 - $62.99

Q1 2022

Shares 5,832 Value ($000) $364 Avg Close $56.77 Range $53.45 - $64.83

Q4 2021

Shares 4,696 Value ($000) $335 Avg Close $58.09 Range $49.63 - $64.66

Q3 2021

Shares 4,087 Value ($000) $229 Avg Close $47.36 Range $42.04 - $52.53

Q4 2019

Shares 29,623 Value ($000) $1,519 Avg Close $43.72 Range $40.72 - $48.47

Q3 2019

Shares 115,993 Value ($000) $6,235 Avg Close $43.78 Range $40.10 - $46.25

Q2 2019

Shares 117,059 Value ($000) $6,182 Avg Close $42.32 Range $40.14 - $44.48

Q1 2019

Shares 69,796 Value ($000) $3,477 Avg Close $40.53 Range $37.77 - $42.81

Q4 2018

Shares 28,739 Value ($000) $1,427 Avg Close $39.10 Range $36.10 - $42.66

Q3 2013

Shares 23,288 Value ($000) $643 Avg Close $19.36 Range $17.47 - $21.33

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	39,917	$3,226	$80.23	$73.20 - $85.91
Q3 2025	16,106	$1,320	$79.81	$73.77 - $85.12
Q2 2025	15,726	$1,212	$76.31	$69.94 - $79.78
Q1 2025	14,809	$1,190	$76.90	$69.36 - $83.20
Q4 2024	14,881	$1,099	$75.57	$70.66 - $85.02
Q3 2024	24,428	$1,909	$83.04	$72.06 - $96.51
Q2 2024	20,583	$1,803	$83.59	$77.75 - $92.55
Q1 2024	17,693	$1,529	$82.56	$76.18 - $94.24
Q4 2023	18,425	$1,566	$72.94	$64.95 - $84.21
Q3 2023	24,552	$1,864	$77.16	$70.28 - $86.93
Q2 2023	26,293	$2,076	$70.21	$64.41 - $74.69
Q1 2023	27,013	$1,952	$61.74	$53.03 - $68.09
Q4 2022	26,830	$1,575	$55.25	$48.33 - $63.55
Q3 2022	26,806	$1,649	$66.11	$56.18 - $75.76
Q2 2022	37,534	$2,520	$57.93	$52.29 - $62.99
Q1 2022	5,832	$364	$56.77	$53.45 - $64.83
Q4 2021	4,696	$335	$58.09	$49.63 - $64.66
Q3 2021	4,087	$229	$47.36	$42.04 - $52.53
Q4 2019	29,623	$1,519	$43.72	$40.72 - $48.47
Q3 2019	115,993	$6,235	$43.78	$40.10 - $46.25
Q2 2019	117,059	$6,182	$42.32	$40.14 - $44.48
Q1 2019	69,796	$3,477	$40.53	$37.77 - $42.81
Q4 2018	28,739	$1,427	$39.10	$36.10 - $42.66
Q3 2013	23,288	$643	$19.36	$17.47 - $21.33