OTTER TAIL CORP

Ticker: OTTR CUSIP: 689648103 Class: Common Stock

GREAT VALLEY ADVISOR GROUP, INC.'s Holding History (CIK: 0001769897)

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

Q4 2025

Shares 10,201 Value ($000) $825 Avg Close $80.23 Range $73.20 - $85.91

Q3 2025

Shares 10,200 Value ($000) $837 Avg Close $79.81 Range $73.77 - $85.12

Q2 2025

Shares 10,200 Value ($000) $786 Avg Close $76.31 Range $69.94 - $79.78

Q3 2024

Shares 3,368 Value ($000) $263 Avg Close $83.04 Range $72.06 - $96.51

Q2 2024

Shares 3,349 Value ($000) $293 Avg Close $83.59 Range $77.75 - $92.55

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	10,201	$825	$80.23	$73.20 - $85.91
Q3 2025	10,200	$837	$79.81	$73.77 - $85.12
Q2 2025	10,200	$786	$76.31	$69.94 - $79.78
Q3 2024	3,368	$263	$83.04	$72.06 - $96.51
Q2 2024	3,349	$293	$83.59	$77.75 - $92.55