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Talen Energy Corp

For the period ended Sep 30, 2026. Filed Nov 3, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Nov 3, 2026

TLN$363.13+7.2%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

We have evaluated, under the supervision and with the participation of management, including our principal executive officer and principal financial officer, the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act). Based on that evaluation, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective as of September 30, 2026.

Changes in Internal Control Over Financial Reporting

During the three months ended September 30, 2026, management was in the process of integrating the internal controls of the entities recently acquired in the Cornerstone Acquisition into the Company’s existing operations. Other than additional controls associated with the Cornerstone Acquisition, there were no changes in our internal control over financial reporting that occurred during the three months ended September 30, 2026 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.