OTTER TAIL CORP

Ticker: OTTR CUSIP: 689648103 Class: Common Stock

PRELUDE CAPITAL MANAGEMENT, LLC's Holding History (CIK: 0001387508)

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

Q4 2025

Shares 2,496 Value ($000) $202 Avg Close $80.23 Range $73.20 - $85.91

Q1 2024

Shares 3,369 Value ($000) $291 Avg Close $82.56 Range $76.18 - $94.24

Q2 2016

Shares 590 Value ($000) $20 Avg Close $22.72 Range $21.07 - $25.45

Q4 2014

Shares 10,185 Value ($000) $315 Avg Close $20.92 Range $18.69 - $23.28

Q3 2014

Shares 6,041 Value ($000) $161 Avg Close $19.83 Range $18.79 - $21.21

Q3 2013

Shares 300 Value ($000) $8 Avg Close $19.36 Range $17.47 - $21.33

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,496	$202	$80.23	$73.20 - $85.91
Q1 2024	3,369	$291	$82.56	$76.18 - $94.24
Q2 2016	590	$20	$22.72	$21.07 - $25.45
Q4 2014	10,185	$315	$20.92	$18.69 - $23.28
Q3 2014	6,041	$161	$19.83	$18.79 - $21.21
Q3 2013	300	$8	$19.36	$17.47 - $21.33