OTTER TAIL CORP

Ticker: OTTR CUSIP: 689648103 Class: Common Stock

TWO SIGMA INVESTMENTS, LP's Holding History (CIK: 0001179392)

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

Q4 2025

Shares 271,653 Value ($000) $21,952 Avg Close $80.23 Range $73.20 - $85.91

Q3 2025

Shares 137,624 Value ($000) $11,281 Avg Close $79.81 Range $73.77 - $85.12

Q2 2025

Shares 24,348 Value ($000) $1,877 Avg Close $76.31 Range $69.94 - $79.78

Q1 2025

Shares 13,982 Value ($000) $1,124 Avg Close $76.90 Range $69.36 - $83.20

Q4 2024

Shares 8,924 Value ($000) $659 Avg Close $75.57 Range $70.66 - $85.02

Q3 2024

Shares 48,324 Value ($000) $3,777 Avg Close $83.04 Range $72.06 - $96.51

Q2 2024

Shares 29,852 Value ($000) $2,615 Avg Close $83.59 Range $77.75 - $92.55

Q1 2024

Shares 16,867 Value ($000) $1,457 Avg Close $82.56 Range $76.18 - $94.24

Q4 2023

Shares 47,793 Value ($000) $4,061 Avg Close $72.94 Range $64.95 - $84.21

Q3 2023

Shares 20,830 Value ($000) $1,581 Avg Close $77.16 Range $70.28 - $86.93

Q3 2022

Shares 14,102 Value ($000) $868 Avg Close $66.11 Range $56.18 - $75.76

Q1 2022

Shares 4,318 Value ($000) $270 Avg Close $56.77 Range $53.45 - $64.83

Q3 2021

Shares 4,530 Value ($000) $254 Avg Close $47.36 Range $42.04 - $52.53

Q3 2020

Shares 70,085 Value ($000) $2,535 Avg Close $33.22 Range $30.66 - $36.11

Q2 2020

Shares 56,987 Value ($000) $2,211 Avg Close $35.99 Range $31.54 - $41.04

Q4 2019

Shares 15,437 Value ($000) $792 Avg Close $43.72 Range $40.72 - $48.47

Q3 2019

Shares 22,024 Value ($000) $1,184 Avg Close $43.78 Range $40.10 - $46.25

Q2 2019

Shares 34,900 Value ($000) $1,843 Avg Close $42.32 Range $40.14 - $44.48

Q1 2018

Shares 38,654 Value ($000) $1,676 Avg Close $33.54 Range $29.25 - $35.88

Q1 2017

Shares 45,389 Value ($000) $1,720 Avg Close $29.42 Range $27.80 - $31.55

Q2 2016

Shares 32,370 Value ($000) $1,084 Avg Close $22.72 Range $21.07 - $25.45

Q1 2016

Shares 59,786 Value ($000) $1,771 Avg Close $20.54 Range $19.18 - $22.35

Q4 2015

Shares 9,491 Value ($000) $253 Avg Close $19.84 Range $18.55 - $21.13

Q3 2015

Shares 30,764 Value ($000) $802 Avg Close $19.31 Range $18.04 - $20.60

Q4 2014

Shares 22,588 Value ($000) $699 Avg Close $20.92 Range $18.69 - $23.28

Q1 2014

Shares 23,483 Value ($000) $723 Avg Close $20.25 Range $18.41 - $21.88

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	271,653	$21,952	$80.23	$73.20 - $85.91
Q3 2025	137,624	$11,281	$79.81	$73.77 - $85.12
Q2 2025	24,348	$1,877	$76.31	$69.94 - $79.78
Q1 2025	13,982	$1,124	$76.90	$69.36 - $83.20
Q4 2024	8,924	$659	$75.57	$70.66 - $85.02
Q3 2024	48,324	$3,777	$83.04	$72.06 - $96.51
Q2 2024	29,852	$2,615	$83.59	$77.75 - $92.55
Q1 2024	16,867	$1,457	$82.56	$76.18 - $94.24
Q4 2023	47,793	$4,061	$72.94	$64.95 - $84.21
Q3 2023	20,830	$1,581	$77.16	$70.28 - $86.93
Q3 2022	14,102	$868	$66.11	$56.18 - $75.76
Q1 2022	4,318	$270	$56.77	$53.45 - $64.83
Q3 2021	4,530	$254	$47.36	$42.04 - $52.53
Q3 2020	70,085	$2,535	$33.22	$30.66 - $36.11
Q2 2020	56,987	$2,211	$35.99	$31.54 - $41.04
Q4 2019	15,437	$792	$43.72	$40.72 - $48.47
Q3 2019	22,024	$1,184	$43.78	$40.10 - $46.25
Q2 2019	34,900	$1,843	$42.32	$40.14 - $44.48
Q1 2018	38,654	$1,676	$33.54	$29.25 - $35.88
Q1 2017	45,389	$1,720	$29.42	$27.80 - $31.55
Q2 2016	32,370	$1,084	$22.72	$21.07 - $25.45
Q1 2016	59,786	$1,771	$20.54	$19.18 - $22.35
Q4 2015	9,491	$253	$19.84	$18.55 - $21.13
Q3 2015	30,764	$802	$19.31	$18.04 - $20.60
Q4 2014	22,588	$699	$20.92	$18.69 - $23.28
Q1 2014	23,483	$723	$20.25	$18.41 - $21.88