{"transactions":[{"id":761265,"issuer":{"id":3381,"kind":"organization","name":"Talen Energy Corp"},"owners":[{"id":43742,"kind":"person","name":"Casulli Edward T.","position":1,"cik":"0002102527","reported_name":"Casulli Edward T.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP & Chief Nuclear Officer"}}],"security":"2023 Performance-Based Restricted Stock Units","published_at":"2026-05-27T22:32:31.000Z","date":"2026-05-22","kind":"exercise","planned":false,"acquired":false,"shares":9564,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each performance-based restricted stock unit (\"PSU\") was issued under the Plan and represents a contingent right to receive one share of common stock or its cash equivalent, as determined at the time of settlement by the Committee pursuant to the terms of the Plan. The number of PSUs that vest can range from 0% to 200% of the target number of PSUs subject to the award. The number of shares in this row represents the actual level of performance (200%). The reporting person's PSUs were granted on August 1, 2023 and they vested on May 17, 2026, the third anniversary of the vesting commencement date, with 60% of the after-tax value of such PSUs settled in cash."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each performance-based restricted stock unit (\"PSU\") was issued under the Plan and represents a contingent right to receive one share of common stock or its cash equivalent, as determined at the time of settlement by the Committee pursuant to the terms of the Plan. The number of PSUs that vest can range from 0% to 200% of the target number of PSUs subject to the award. The number of shares in this row represents the actual level of performance (200%). The reporting person's PSUs were granted on August 1, 2023 and they vested on May 17, 2026, the third anniversary of the vesting commencement date, with 60% of the after-tax value of such PSUs settled in cash."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each performance-based restricted stock unit (\"PSU\") was issued under the Plan and represents a contingent right to receive one share of common stock or its cash equivalent, as determined at the time of settlement by the Committee pursuant to the terms of the Plan. The number of PSUs that vest can range from 0% to 200% of the target number of PSUs subject to the award. The number of shares in this row represents the actual level of performance (200%). The reporting person's PSUs were granted on August 1, 2023 and they vested on May 17, 2026, the third anniversary of the vesting commencement date, with 60% of the after-tax value of such PSUs settled in cash."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":9564},"source":{"system":"sec-edgar","filing":"0001628280-26-038572","document":"wk-form4_1779921145.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1622536/000162828026038572/wk-form4_1779921145.xml","form_type":"4"}},{"id":761264,"issuer":{"id":3381,"kind":"organization","name":"Talen Energy Corp"},"owners":[{"id":43742,"kind":"person","name":"Casulli Edward T.","position":1,"cik":"0002102527","reported_name":"Casulli Edward T.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP & Chief Nuclear Officer"}}],"security":"2023 Restricted Stock Units","published_at":"2026-05-27T22:32:31.000Z","date":"2026-05-22","kind":"exercise","planned":false,"acquired":false,"shares":6376,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") was issued under the Talen Energy Corporation 2023 Equity Incentive Plan (the \"Plan\") and represents a contingent right to receive one share of common stock, par value $0.001 (\"common stock\") of Talen Energy Corporation (the \"Company\") or its cash equivalent, as determined at the time of settlement by the Compensation Committee of the Company's Board of Directors (the \"Committee\") pursuant to the terms of the Plan. The reporting person's RSUs were granted on August 1, 2023 and the final installment of the reporting person's RSUs vested on May 17, 2026, the third anniversary of the vesting commencement date, with 60% of the after-tax value of such RSUs settled in cash."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") was issued under the Talen Energy Corporation 2023 Equity Incentive Plan (the \"Plan\") and represents a contingent right to receive one share of common stock, par value $0.001 (\"common stock\") of Talen Energy Corporation (the \"Company\") or its cash equivalent, as determined at the time of settlement by the Compensation Committee of the Company's Board of Directors (the \"Committee\") pursuant to the terms of the Plan. The reporting person's RSUs were granted on August 1, 2023 and the final installment of the reporting person's RSUs vested on May 17, 2026, the third anniversary of the vesting commencement date, with 60% of the after-tax value of such RSUs settled in cash."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") was issued under the Talen Energy Corporation 2023 Equity Incentive Plan (the \"Plan\") and represents a contingent right to receive one share of common stock, par value $0.001 (\"common stock\") of Talen Energy Corporation (the \"Company\") or its cash equivalent, as determined at the time of settlement by the Compensation Committee of the Company's Board of Directors (the \"Committee\") pursuant to the terms of the Plan. The reporting person's RSUs were granted on August 1, 2023 and the final installment of the reporting person's RSUs vested on May 17, 2026, the third anniversary of the vesting commencement date, with 60% of the after-tax value of such RSUs settled in cash."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":6376},"source":{"system":"sec-edgar","filing":"0001628280-26-038572","document":"wk-form4_1779921145.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1622536/000162828026038572/wk-form4_1779921145.xml","form_type":"4"}},{"id":761263,"issuer":{"id":3381,"kind":"organization","name":"Talen Energy Corp"},"owners":[{"id":43742,"kind":"person","name":"Casulli Edward T.","position":1,"cik":"0002102527","reported_name":"Casulli Edward T.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP & Chief Nuclear Officer"}}],"security":"Common Stock","published_at":"2026-05-27T22:32:31.000Z","date":"2026-05-22","kind":"tax_withholding","planned":false,"acquired":false,"shares":2774,"price":324.21,"value":899358.54,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"In an exempt disposition to the Company under Rule 16b-3(e), the reporting person remitted shares to the Company in connection with the satisfaction of tax withholding obligations arising out of the vesting of the RSUs and PSUs."}],"balance_after":7205,"source":{"system":"sec-edgar","filing":"0001628280-26-038572","document":"wk-form4_1779921145.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1622536/000162828026038572/wk-form4_1779921145.xml","form_type":"4"}},{"id":761262,"issuer":{"id":3381,"kind":"organization","name":"Talen Energy Corp"},"owners":[{"id":43742,"kind":"person","name":"Casulli Edward T.","position":1,"cik":"0002102527","reported_name":"Casulli Edward T.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP & Chief Nuclear Officer"}}],"security":"Common Stock","published_at":"2026-05-27T22:32:31.000Z","date":"2026-05-22","kind":"exercise","planned":false,"acquired":true,"shares":3826,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each performance-based restricted stock unit (\"PSU\") was issued under the Plan and represents a contingent right to receive one share of common stock or its cash equivalent, as determined at the time of settlement by the Committee pursuant to the terms of the Plan. The number of PSUs that vest can range from 0% to 200% of the target number of PSUs subject to the award. The number of shares in this row represents the actual level of performance (200%). The reporting person's PSUs were granted on August 1, 2023 and they vested on May 17, 2026, the third anniversary of the vesting commencement date, with 60% of the after-tax value of such PSUs settled in cash."}],"balance_after":9979,"source":{"system":"sec-edgar","filing":"0001628280-26-038572","document":"wk-form4_1779921145.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1622536/000162828026038572/wk-form4_1779921145.xml","form_type":"4"}},{"id":761261,"issuer":{"id":3381,"kind":"organization","name":"Talen Energy Corp"},"owners":[{"id":43742,"kind":"person","name":"Casulli Edward T.","position":1,"cik":"0002102527","reported_name":"Casulli Edward T.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP & Chief Nuclear Officer"}}],"security":"Common Stock","published_at":"2026-05-27T22:32:31.000Z","date":"2026-05-22","kind":"exercise","planned":false,"acquired":true,"shares":2550,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") was issued under the Talen Energy Corporation 2023 Equity Incentive Plan (the \"Plan\") and represents a contingent right to receive one share of common stock, par value $0.001 (\"common stock\") of Talen Energy Corporation (the \"Company\") or its cash equivalent, as determined at the time of settlement by the Compensation Committee of the Company's Board of Directors (the \"Committee\") pursuant to the terms of the Plan. The reporting person's RSUs were granted on August 1, 2023 and the final installment of the reporting person's RSUs vested on May 17, 2026, the third anniversary of the vesting commencement date, with 60% of the after-tax value of such RSUs settled in cash."}],"balance_after":6153,"source":{"system":"sec-edgar","filing":"0001628280-26-038572","document":"wk-form4_1779921145.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1622536/000162828026038572/wk-form4_1779921145.xml","form_type":"4"}},{"id":873504,"issuer":{"id":3381,"kind":"organization","name":"Talen Energy Corp"},"owners":[{"id":43742,"kind":"person","name":"Casulli Edward T.","position":1,"cik":"0002102527","reported_name":"Casulli Edward T.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP & Chief Nuclear Officer"}}],"security":"2026 Performance-Based Restricted Stock Units","published_at":"2026-03-02T22:47:40.000Z","date":"2026-02-26","kind":"grant","planned":false,"acquired":true,"shares":10730,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each Performance-Based Restricted Stock Unit (\"PSU\") was issued under the Plan and represents a contingent right to receive one share of common stock or its cash equivalent, as determined at the time of settlement by the Committee pursuant to the terms of the Plan."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents PSUs that will vest subject to the reporting person's (i) continued service and (ii) achievement of applicable performance goals. 4,292 of the PSUs will be eligible to vest based on performance as of February 25, 2028 and 6,438 of the PSUs will be eligible to vest based on performance as of February 25, 2029. The number of PSUs that vest can range from 0% to 200% of the target number of PSUs subject to the award, plus, if the maximum performance level is exceeded, an additional number of PSUs in an amount equal to the reporting person's proportionate share among the participating executive officers of 3% of the Company's market capitalization above the maximum performance level. The numbers of PSUs and shares of common stock in this row represent the maximum level of performance (or 200%) for each award."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents PSUs that will vest subject to the reporting person's (i) continued service and (ii) achievement of applicable performance goals. 4,292 of the PSUs will be eligible to vest based on performance as of February 25, 2028 and 6,438 of the PSUs will be eligible to vest based on performance as of February 25, 2029. The number of PSUs that vest can range from 0% to 200% of the target number of PSUs subject to the award, plus, if the maximum performance level is exceeded, an additional number of PSUs in an amount equal to the reporting person's proportionate share among the participating executive officers of 3% of the Company's market capitalization above the maximum performance level. The numbers of PSUs and shares of common stock in this row represent the maximum level of performance (or 200%) for each award."}],"balance_after":10730,"derivative":{"underlying":"Common Stock","underlying_shares":10730},"source":{"system":"sec-edgar","filing":"0001628280-26-013408","document":"wk-form4_1772491656.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1622536/000162828026013408/wk-form4_1772491656.xml","form_type":"4"}},{"id":873503,"issuer":{"id":3381,"kind":"organization","name":"Talen Energy Corp"},"owners":[{"id":43742,"kind":"person","name":"Casulli Edward T.","position":1,"cik":"0002102527","reported_name":"Casulli Edward T.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP & Chief Nuclear Officer"}}],"security":"2026 Restricted Stock Units","published_at":"2026-03-02T22:47:40.000Z","date":"2026-02-26","kind":"grant","planned":false,"acquired":true,"shares":3577,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") was issued under the Talen Energy Corporation 2023 Equity Incentive Plan (the \"Plan\") and represents a contingent right to receive one share of common stock, par value $0.001 (\"common stock\"), of Talen Energy Corporation (the \"Company\") or its cash equivalent, as determined at the time of settlement by the Compensation Committee of the Company's Board of Directors (the \"Committee\") pursuant to the terms of the Plan."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Represents 1,430 RSUs that will vest on February 25, 2027, 1,431 RSUs that will vest on February 25, 2028 and 716 RSUs that will vest on February 25, 2029, in each case subject to the reporting person's continued service."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents 1,430 RSUs that will vest on February 25, 2027, 1,431 RSUs that will vest on February 25, 2028 and 716 RSUs that will vest on February 25, 2029, in each case subject to the reporting person's continued service."}],"balance_after":3577,"derivative":{"underlying":"Common Stock","underlying_shares":3577},"source":{"system":"sec-edgar","filing":"0001628280-26-013408","document":"wk-form4_1772491656.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1622536/000162828026013408/wk-form4_1772491656.xml","form_type":"4"}}]}