ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

Rossby Financial, LCC's Holding History (CIK: 0002056510)

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

Q4 2025

Shares 530 Value ($000) $34 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 508 Value ($000) $34 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 480 Value ($000) $29 Avg Close $60.10 Range $55.76 - $64.19

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	530	$34	$66.83	$64.30 - $69.59
Q3 2025	508	$34	$63.88	$59.07 - $67.04
Q2 2025	480	$29	$60.10	$55.76 - $64.19