{"transactions":[{"id":869364,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President & CEO"}}],"security":"Common Stock","published_at":"2026-03-03T21:17:34.000Z","date":"2026-03-02","kind":"grant","planned":false,"acquired":true,"shares":10905,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock units (RSUs) which are converted to common stock on a one-to-one basis when vested.  The RSUs vest on December 31, 2028."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes adjustments for accrued dividends pursuant to dividend reinvestment and exempt from Sec 16 under Rule 16a-11"}],"balance_after":31908.3543,"source":{"system":"sec-edgar","filing":"0001193125-26-088253","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000119312526088253/ownership.xml","form_type":"4"}},{"id":947536,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President & CEO"}}],"security":"Common Stock","published_at":"2026-01-06T17:35:40.000Z","date":"2026-01-02","kind":"tax_withholding","planned":false,"acquired":false,"shares":1216,"price":78.44,"value":95383.04,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes adjustments for accrued dividends pursuant to dividend reinvestment and exempt from Sec 16 under Rule 16a-11"}],"balance_after":21003.3543,"source":{"system":"sec-edgar","filing":"0001193125-26-003875","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000119312526003875/ownership.xml","form_type":"4"}},{"id":977914,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President & CEO"}}],"security":"Phantom Stock Units","published_at":"2025-12-08T20:32:00.000Z","date":"2025-12-04","kind":"grant","planned":false,"acquired":true,"shares":1900.6589,"price":78.92,"value":150000.000388,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each phantom stock unit has an equivalent value to one share of MGEE common stock and entitles the holder to the cash value thereof"},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Phantom stock units are accrued under MGE's 2023 Deferred Compensation Supplemental Executive Retirement Plan (2023 DCSERP) and are to be settled in accordance with the terms of the plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Phantom stock units are accrued under MGE's 2023 Deferred Compensation Supplemental Executive Retirement Plan (2023 DCSERP) and are to be settled in accordance with the terms of the plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Aggregate amount of phantom stock units held under the 2023 DCSERP."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Includes adjustments for accrued dividends pursuant to dividend reinvestment and exempt from Sec 16 under Rule 16a-11"}],"balance_after":4782.1704,"derivative":{"underlying":"common stock","underlying_shares":1900.6589},"source":{"system":"sec-edgar","filing":"0001193125-25-311139","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000119312525311139/ownership.xml","form_type":"4"}},{"id":1223416,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President & CEO"}}],"security":"Common Stock","published_at":"2025-03-05T19:40:58.000Z","date":"2025-03-03","kind":"grant","planned":false,"acquired":true,"shares":6907,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock units (RSUs) which are converted to common stock on a one-to-one basis when vested. The RSUs vest on December 31, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes adjustments for accrued dividends pursuant to dividend reinvestment and exempt from Sec 16 under Rule 16a-11"}],"balance_after":22076.9307,"source":{"system":"sec-edgar","filing":"0000950170-25-033356","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000095017025033356/ownership.xml","form_type":"4"}},{"id":1311394,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President & CEO"}}],"security":"Common Stock","published_at":"2025-01-06T15:53:43.000Z","date":"2025-01-02","kind":"tax_withholding","planned":false,"acquired":false,"shares":1103,"price":92.96,"value":102534.88,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes adjustments for accrued dividends pursuant to dividend reinvestment and exempt from Sec 16 under Rule 16a-11"}],"balance_after":15169.9307,"source":{"system":"sec-edgar","filing":"0000950170-25-001750","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000095017025001750/ownership.xml","form_type":"4"}},{"id":1598048,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President & CEO"}}],"security":"Phantom Stock Units","published_at":"2024-03-05T15:47:19.000Z","date":"2024-03-01","kind":"grant","planned":false,"acquired":true,"shares":1092.5194,"price":63.19,"value":69036.300886,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each phantom stock unit has an equivalent value to one share of MGEE common stock and entitles the holder to the cash value thereof."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Phantom stock units are accrued under MGE's 2023 Deferred Compensation Supplemental Executive Retirement Plan (2023 DCSERP) and are to be settled in accordance with the terms of the plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Phantom stock units are accrued under MGE's 2023 Deferred Compensation Supplemental Executive Retirement Plan (2023 DCSERP) and are to be settled in accordance with the terms of the plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes adjustments for accrued dividends pursuant to dividend reinvestment and exempt from Sec 16 under Rule 16a-11."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"Aggregate amount of phantom stock units held under the 2023 DCSERP."}],"balance_after":2778.8128,"derivative":{"underlying":"common stock","underlying_shares":1092.5194},"source":{"system":"sec-edgar","filing":"0000950170-24-025510","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000095017024025510/ownership.xml","form_type":"4"}},{"id":1598047,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President & CEO"}}],"security":"Common Stock","published_at":"2024-03-05T15:47:19.000Z","date":"2024-03-01","kind":"grant","planned":false,"acquired":true,"shares":5162,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents restricted stock units (RSU's) which are converted to common stock on a one-to-one basis when vested. The RSU's vest on December 31, 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes adjustments for accrued dividends pursuant to dividend reinvestment and exempt from Sec 16 under Rule 16a-11."}],"balance_after":16179.499,"source":{"system":"sec-edgar","filing":"0000950170-24-025510","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000095017024025510/ownership.xml","form_type":"4"}},{"id":1598046,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President & CEO"}}],"security":"Common Stock","published_at":"2024-03-05T15:47:19.000Z","date":"2024-03-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":1394,"price":63.64,"value":88714.16,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes adjustments for accrued dividends pursuant to dividend reinvestment and exempt from Sec 16 under Rule 16a-11."}],"balance_after":11017.499,"source":{"system":"sec-edgar","filing":"0000950170-24-025510","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000095017024025510/ownership.xml","form_type":"4"}},{"id":1714795,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President & CEO"}}],"security":"Phantom Stock Units","published_at":"2023-12-12T20:08:06.000Z","date":"2023-12-11","kind":"grant","planned":false,"acquired":true,"shares":1391.7501,"price":72.67,"value":101138.479767,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each phantom stock unit has an equivalent value to one share of MGEE common stock and entitles the holder to the cash value thereof"},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Phantom stock units were accrued under MGE's 2023 Deferred Compensation Supplemental Executive Retirement Plan (DC SERP) and are to be settled in accordance with the terms of the plan"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Phantom stock units were accrued under MGE's 2023 Deferred Compensation Supplemental Executive Retirement Plan (DC SERP) and are to be settled in accordance with the terms of the plan"}],"balance_after":1684.5884,"derivative":{"underlying":"common stock","underlying_shares":1391.7501},"source":{"system":"sec-edgar","filing":"0000950170-23-069643","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000095017023069643/ownership.xml","form_type":"4"}},{"id":1966511,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President & CEO"}}],"security":"Phantom Stock Units","published_at":"2023-03-07T15:44:48.000Z","date":"2023-03-03","kind":"grant","acquired":true,"shares":289.6627,"price":71.25,"value":20638.467375,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each phantom stock unit has an equivalent value to one share of MGEE common stock and entitles the holder to the cash value thereof."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Phantom stock units were accrued under MGE's 2023 Deferred Compensation Supplemental Executive Retirement Plan (DC SERP) and are to be settled in accordance with the terms of the plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Phantom stock units were accrued under MGE's 2023 Deferred Compensation Supplemental Executive Retirement Plan (DC SERP) and are to be settled in accordance with the terms of the plan."}],"balance_after":289.6627,"derivative":{"underlying":"Common Stock","underlying_shares":289.6627},"source":{"system":"sec-edgar","filing":"0001161728-23-000016","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000116172823000016/primary_doc.xml","form_type":"4"}},{"id":1974992,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President and CEO"}}],"security":"MGEE Common Stock","published_at":"2023-03-03T15:58:10.000Z","date":"2023-03-01","kind":"grant","acquired":true,"shares":3415,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock units (RSUs) which are converted to common stock on a one-to-one basis when vested. The RSUs vest on December 31, 2025."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes adjustments for accrued dividends pursuant to a dividend reinvestment transaction exempt from Section 16 under Rule 16a-11."}],"balance_after":12356.9815,"source":{"system":"sec-edgar","filing":"0001161728-23-000001","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000116172823000001/primary_doc.xml","form_type":"4"}},{"id":2139438,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President & CEO"}}],"security":"MGEE COMMON STOCK","published_at":"2022-10-11T14:27:31.000Z","date":"2022-02-18","kind":"grant","acquired":true,"shares":3140,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents restricted stock units (RSUs) which are converted to common stock on a one-to-one basis when vested. The RSUs vest on December 31, 2024."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes adjustments for accrued dividends, pursuant to a dividend reinvestment transaction exempt from Section 16 under Rule 16a-11."}],"balance_after":8927.8597,"source":{"system":"sec-edgar","filing":"0001161728-22-000028","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000116172822000028/primary_doc.xml","form_type":"4"}},{"id":2139437,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President & CEO"}}],"security":"MGEE COMMON STOCK","published_at":"2022-10-11T14:27:31.000Z","date":"2021-02-19","kind":"grant","acquired":true,"shares":3350,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents restricted stock units (RSUs) which are converted to common stock on a one-to-one basis when vested. The RSUs vest on December 31, 2023."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes adjustments for accrued dividends, pursuant to a dividend reinvestment transaction exempt from Section 16 under Rule 16a-11."}],"balance_after":5787.8597,"source":{"system":"sec-edgar","filing":"0001161728-22-000028","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000116172822000028/primary_doc.xml","form_type":"4"}},{"id":3577229,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman, President and CEO"}}],"security":"MGEE Common Stock","published_at":"2019-03-27T18:16:30.000Z","date":"2019-03-25","kind":"purchase","acquired":true,"shares":524.9454,"price":66.6236,"value":34973.75235144,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes shares purchased through reinvestment."}],"balance_after":2270.7735,"source":{"system":"sec-edgar","filing":"0001161728-19-000013","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000116172819000013/primary_doc.xml","form_type":"4"}},{"id":3994839,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"MGEE Common Stock","published_at":"2018-03-15T13:38:14.000Z","date":"2018-03-13","kind":"purchase","acquired":true,"shares":627.4589,"price":55.7305,"value":34968.59822645,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes shares purchased through reinvestment."}],"balance_after":1704.4146,"source":{"system":"sec-edgar","filing":"0001161728-18-000008","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000116172818000008/primary_doc.xml","form_type":"4"}},{"id":4216263,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"MGEE Common Stock","published_at":"2017-09-06T20:48:15.000Z","date":"2017-09-05","kind":"purchase","acquired":true,"shares":546.6674,"price":64.0243,"value":34999.99761782,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes shares purchased through reinvestment."}],"balance_after":1068.9412,"source":{"system":"sec-edgar","filing":"0001161728-17-000023","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000116172817000023/primary_doc.xml","form_type":"4"}},{"id":4528774,"issuer":{"id":4253,"kind":"organization","name":"MGE ENERGY INC","symbol":"MGEE"},"owners":[{"id":63484,"kind":"person","name":"Keebler Jeffrey M","position":1,"cik":"0001650481","reported_name":"Keebler Jeffrey M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Sr. VP-Energy Supply/Planning"}}],"security":"MGEE Common Stock","published_at":"2016-12-08T19:33:59.000Z","date":"2016-12-06","kind":"purchase","acquired":true,"shares":198.434,"price":60.4735,"value":11999.998499,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes shares purchased through reinvestment."}],"balance_after":515.8671,"source":{"system":"sec-edgar","filing":"0001161728-16-000044","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1161728/000116172816000044/primary_doc.xml","form_type":"4"}}]}