{"transactions":[{"id":808760,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":52533,"kind":"person","name":"Johnson Kathryn O","position":1,"cik":"0001574100","reported_name":"Johnson Kathryn O","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-04-14T18:39:40.000Z","date":"2026-04-13","kind":"grant","planned":false,"acquired":true,"shares":1500,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares of Common Stock acquired under the 2023 Stock Incentive Plan, which is a grant of Restricted Stock. The shares granted on April 13, 2026 will vest in near-equal installments of one-third per year beginning April 8, 2027."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This grant has a fair market value of $91.15."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares acquired individually and pursuant to Restricted Stock Award distributions."}],"balance_after":29453,"source":{"system":"sec-edgar","filing":"0001574100-26-000002","document":"wk-form4_1776191977.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000157410026000002/wk-form4_1776191977.xml","form_type":"4"}},{"id":1172493,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":52533,"kind":"person","name":"Johnson Kathryn O","position":1,"cik":"0001574100","reported_name":"Johnson Kathryn O","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-04-14T20:34:45.000Z","date":"2025-04-13","kind":"grant","planned":false,"acquired":true,"shares":1700,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares of Common Stock acquired under the 2023 Stock Incentive Plan, which is a grant of Restricted Stock. The shares granted on April 13, 2025 will vest in near-equal installments of one-third per\nyear beginning April 8, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This grant has a fair market value of $77.59."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares acquired individually and pursuant to Restricted Stock Award distributions."}],"balance_after":27953,"source":{"system":"sec-edgar","filing":"0001466593-25-000070","document":"wk-form4_1744662878.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659325000070/wk-form4_1744662878.xml","form_type":"4"}},{"id":1544501,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":52533,"kind":"person","name":"Johnson Kathryn O","position":1,"cik":"0001574100","reported_name":"Johnson Kathryn O","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-04-09T16:27:13.000Z","date":"2024-04-08","kind":"grant","planned":false,"acquired":true,"shares":1700,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares of Common Stock acquired under the 2023 Stock Incentive Plan, which is a grant of Restricted Stock. The shares granted on April 8, 2024 will vest in near-equal installments of one-third per year beginning April 8, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This grant has a fair market value of $87.02."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares acquired individually and pursuant to Restricted Stock Award distributions."}],"balance_after":26253,"source":{"system":"sec-edgar","filing":"0001466593-24-000073","document":"wk-form4_1712680023.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659324000073/wk-form4_1712680023.xml","form_type":"4"}},{"id":1917155,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":52533,"kind":"person","name":"Johnson Kathryn O","position":1,"cik":"0001574100","reported_name":"Johnson Kathryn O","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-04-19T16:54:42.000Z","date":"2023-04-17","kind":"grant","planned":false,"acquired":true,"shares":1900,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares of Common Stock acquired under the 2023 Stock Incentive Plan, which is a grant of Restricted Stock. The shares granted on April 17, 2023 will vest in near-equal installments of one-third per year beginning April 8, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This grant has a fair market value of $73.3525."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares acquired individually and pursuant to Restricted Stock Award distributions."}],"balance_after":24553,"source":{"system":"sec-edgar","filing":"0001466593-23-000108","document":"wf-form4_168192326883935.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000146659323000108/wf-form4_168192326883935.xml","form_type":"4"}},{"id":2298403,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":52533,"kind":"person","name":"Johnson Kathryn O","position":1,"cik":"0001574100","reported_name":"Johnson Kathryn O","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-04-12T20:36:27.000Z","date":"2022-04-11","kind":"grant","acquired":true,"shares":1900,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares of Common Stock acquired under the 2014 Stock Incentive Plan, which is a grant of Restricted Stock. The shares granted on 4/11/2022 will vest in near-equal installments of one-third per year beginning April 8, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The grant has a fair market value of $63.135."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares acquired pursuant to Restricted Stock Award distributions."}],"balance_after":22653,"source":{"system":"sec-edgar","filing":"0001437749-22-008766","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774922008766/rdgdoc.xml","form_type":"4"}},{"id":2750363,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":52533,"kind":"person","name":"Johnson Kathryn O","position":1,"cik":"0001574100","reported_name":"Johnson Kathryn O","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-04-13T19:24:56.000Z","date":"2021-04-12","kind":"grant","acquired":true,"shares":2400,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares of Common Stock acquired under the 2014 Stock Incentive Plan, which is a grant of Restricted Stock. The shares granted on 4/12/2021 will vest in equal installments of one-third per year beginning April 8, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This grant has a fair market value of $46.50."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares acquired pursuant to Restricted Stock Award distributions."}],"balance_after":20753,"source":{"system":"sec-edgar","filing":"0001437749-21-008821","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774921008821/rdgdoc.xml","form_type":"4"}},{"id":3171724,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":52533,"kind":"person","name":"Johnson Kathryn O","position":1,"cik":"0001574100","reported_name":"Johnson Kathryn O","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-04-22T16:38:38.000Z","date":"2020-04-20","kind":"grant","acquired":true,"shares":2200,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares of Common Stock acquired under the 2014 Stock Incentive Plan, which is a grant of Restricted Stock. The shares granted on 4/20/2020 will vest in near-equal installments of one-third per year beginning April 8, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This grant has a fair market value of $44.853."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares acquired pursuant to Restricted Stock Award distributions."}],"balance_after":18353,"source":{"system":"sec-edgar","filing":"0001437749-20-008180","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920008180/rdgdoc.xml","form_type":"4"}},{"id":3558442,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":52533,"kind":"person","name":"Johnson Kathryn O","position":1,"cik":"0001574100","reported_name":"Johnson Kathryn O","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-04-10T15:25:57.000Z","date":"2019-04-08","kind":"grant","acquired":true,"shares":2000,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares of Common Stock acquired under the 2014 Stock Incentive Plan, which is a grant of Restricted Stock. The shares granted on 4/8/2019 will vest in near-equal installments of one-third per year beginning April 8, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This grant has a fair market value of $49.73065."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares acquired pursuant to Restricted Stock Award distributions."}],"balance_after":16153,"source":{"system":"sec-edgar","filing":"0001437749-19-006852","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919006852/rdgdoc.xml","form_type":"4"}},{"id":3966138,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":52533,"kind":"person","name":"Johnson Kathryn O","position":1,"cik":"0001574100","reported_name":"Johnson Kathryn O","relationship":{"director":true}}],"security":"Common Stock","published_at":"2018-04-10T23:17:02.000Z","date":"2018-04-09","kind":"grant","acquired":true,"shares":2300,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares of Common Stock acquired under the 2014 Stock Incentive Plan, which is a grant of Restricted Stock. The shares granted on 4/9/2018 will vest in near-equal installments of one-third per year beginning April 8, 2019."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This grant has a fair market value of $43.40."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares acquired individually and pursuant to Restricted Stock Award distributions."}],"balance_after":14153,"source":{"system":"sec-edgar","filing":"0001437749-18-006638","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774918006638/rdgdoc.xml","form_type":"4"}},{"id":4353459,"issuer":{"id":4087,"kind":"organization","name":"Otter Tail Corp"},"owners":[{"id":52533,"kind":"person","name":"Johnson Kathryn O","position":1,"cik":"0001574100","reported_name":"Johnson Kathryn O","relationship":{"director":true}}],"security":"Common Stock","published_at":"2017-04-12T16:35:14.000Z","date":"2017-04-10","kind":"grant","acquired":true,"shares":2200,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares of Common Stock acquired under the 2014 Stock Incentive Plan, which is a grant of Restricted Stock. The 2,200 shares granted on 4/10/2017 vest 25% yearly commencing on 4/8/2018."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This grant has a fair market value of $37.75."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total direct holdings include shares acquired individually and pursuant to Restricted Stock Award distributions."}],"balance_after":11853.613,"source":{"system":"sec-edgar","filing":"0001437749-17-006483","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774917006483/rdgdoc.xml","form_type":"4"}}]}