John O. Larsen

Board Chair and CEO at Alliant Energy Corporation

Sits on 2 boards. Last updated September 28, 2026

Time on boards

Boards served
2
Current seats
2
Board service
5 years
Director since
2023

5 years of board service in total across 2 boards, counting each seat separately. Longest: Alliant Energy Corporation, 3 years.

Alliant Energy Corporation Director ยท Executive Chairman
3 years ยท Since 2023
1 year ยท Since 2025

Chief executive roles

Alliant Energy Corporation ยท Board Chair and CEO
Dates unknown

Shareholder support

Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Date Company Transaction Shares Price Value
May 21, 2026 Pacific Gas & Electric Co. Grant or award +10,948 โ€” โ€”
Nov 4, 2025 Pacific Gas & Electric Co. Open-market purchase +7,500 $15.96 $119,700
May 22, 2025 Pacific Gas & Electric Co. Grant or award +10,575 โ€” โ€”
Feb 20, 2025 Alliant Energy Corporation Grant or award +32,199 โ€” โ€”
Feb 20, 2025 Alliant Energy Corporation Shares withheld for tax โˆ’24,461 $61.62 $1,507,287
Feb 15, 2024 Alliant Energy Corporation Grant or award +80,948 โ€” โ€”
Feb 15, 2024 Alliant Energy Corporation Grant or award +19,990 โ€” โ€”
Feb 15, 2024 Alliant Energy Corporation Shares withheld for tax โˆ’49,670 $48.40 $2,404,028
Feb 23, 2023 Alliant Energy Corporation Grant or award +69,117 โ€” โ€”
Feb 23, 2023 Alliant Energy Corporation Grant or award +24,066 โ€” โ€”
Feb 23, 2023 Alliant Energy Corporation Shares withheld for tax โˆ’41,645 $52.99 $2,206,769

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