OTTER TAIL CORP

Ticker: OTTR CUSIP: 689648103 Class: Common Stock

BlackRock, Inc.'s Holding History (CIK: 0002012383)

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

Q4 2025

Shares 6,391,447 Value ($000) $516,493 Avg Close $80.23 Range $73.20 - $85.91

Q3 2025

Shares 6,361,494 Value ($000) $521,452 Avg Close $79.81 Range $73.77 - $85.12

Q2 2025

Shares 6,428,579 Value ($000) $495,579 Avg Close $76.31 Range $69.94 - $79.78

Q1 2025

Shares 6,681,719 Value ($000) $537,010 Avg Close $76.90 Range $69.36 - $83.20

Q4 2024

Shares 6,980,216 Value ($000) $515,419 Avg Close $75.57 Range $70.66 - $85.02

Q3 2024

Shares 6,600,975 Value ($000) $515,932 Avg Close $83.04 Range $72.06 - $96.51

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	6,391,447	$516,493	$80.23	$73.20 - $85.91
Q3 2025	6,361,494	$521,452	$79.81	$73.77 - $85.12
Q2 2025	6,428,579	$495,579	$76.31	$69.94 - $79.78
Q1 2025	6,681,719	$537,010	$76.90	$69.36 - $83.20
Q4 2024	6,980,216	$515,419	$75.57	$70.66 - $85.02
Q3 2024	6,600,975	$515,932	$83.04	$72.06 - $96.51