John O. Larsen
American business executive; executive chair of Alliant Energy.1
Companies
- PG&E CorporationBoard member May 27, 2025 to now8
- Alliant EnergyBoard member Feb 13, 2019 to now9
- Alliant EnergyChair Jul 24, 2019 to Feb 20, 202410
- Alliant EnergyChief executive officer Jul 1, 2019 to Jan 1, 202411
- Alliant EnergyPresident Feb 14, 2018 to Mar 1, 202212
- Alliant EnergyChief operating officer Feb 19, 2019 to Mar 6, 201913
- Alliant EnergySENIOR VICE PRESIDENT Feb 16, 2010 to Mar 14, 201714
Holdings
Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.
Shares held
Alliant Energy LNT301,500 shares15$20.2M at $67.03Feb 24, 2025- PG&E Corporation PCG29,123 shares16$384.6K at $13.21May 21, 2026
As of each latest filing. The line shows shares held over time.
Recent filings
- May 21, 2026Granted 10,948 shares of PG&E Corporation16
- Nov 4, 2025Bought 7,500 shares at $15.96 of PG&E Corporation17
- May 22, 2025Granted 10,575 shares of PG&E Corporation18
- Feb 20, 2025Shares withheld for tax 24,461 shares at $61.62 of Alliant Energy15
- Feb 20, 2025Granted 32,199 shares of Alliant Energy15
- Feb 15, 2024Shares withheld for tax 49,670 shares at $48.40 of Alliant Energy19
- Feb 15, 2024Granted 19,990 shares of Alliant Energy19
- Feb 15, 2024Granted 80,948 shares of Alliant Energy19
- Feb 23, 2023Shares withheld for tax 41,645 shares at $52.99 of Alliant Energy20
- Feb 23, 2023Granted 24,066 shares of Alliant Energy20
- Feb 23, 2023Granted 69,117 shares of Alliant Energy20
- Feb 25, 2022Shares withheld for tax 43,488 shares at $57.87 of Alliant Energy21
- Feb 17, 2022Granted 18,769 shares of Alliant Energy22
- Feb 17, 2022Granted 77,320 shares of Alliant Energy22
- Dec 31, 2021Exercised options 16,443 shares of Alliant Energy23
Career
Occupation: business executive, engineer.3 7
- 2019 to 2024Chief executive, Alliant Energy4
- 2019 to 2024Chief executive officer3 6
- Since 2019Board member, Alliant Energy5
- Since 1988Worked at Alliant Energy2 3
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1WikidataJohn O. Larsen on Wikidata
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- 8SEC EDGARPG&E Corporation, Board member
- 9Wikidata and SEC EDGARAlliant Energy, Board member
- 10SEC EDGARAlliant Energy, Chair
- 11Wikidata and SEC EDGARAlliant Energy, Chief executive officer
- 12SEC EDGARAlliant Energy, President
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- 17SEC EDGARForm 4 filed Nov 5, 2025
- 18SEC EDGARForm 4 filed May 27, 2025
- 19SEC EDGARForm 4 filed Feb 20, 2024
- 20SEC EDGARForm 4 filed Feb 27, 2023
- 21SEC EDGARForm 4 filed Mar 1, 2022
- 22SEC EDGARForm 4 filed Feb 22, 2022
- 23SEC EDGARForm 4 filed Jan 4, 2022