OTTER TAIL CORP

Ticker: OTTR CUSIP: 689648103 Class: Common Stock

Atom Investors LP's Holding History (CIK: 0001738902)

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

Q4 2025

Shares 10,412 Value ($000) $841 Avg Close $80.23 Range $73.20 - $85.91

Q3 2025

Shares 14,470 Value ($000) $1,186 Avg Close $79.81 Range $73.77 - $85.12

Q2 2025

Shares 15,731 Value ($000) $1,213 Avg Close $76.31 Range $69.94 - $79.78

Q3 2022

Shares 3,330 Value ($000) $205 Avg Close $66.11 Range $56.18 - $75.76

Q2 2022

Shares 4,094 Value ($000) $275 Avg Close $57.93 Range $52.29 - $62.99

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	10,412	$841	$80.23	$73.20 - $85.91
Q3 2025	14,470	$1,186	$79.81	$73.77 - $85.12
Q2 2025	15,731	$1,213	$76.31	$69.94 - $79.78
Q3 2022	3,330	$205	$66.11	$56.18 - $75.76
Q2 2022	4,094	$275	$57.93	$52.29 - $62.99