Alliant Energy said it notified participants in its 401(k) Savings Plan that a blackout period will begin at 3 p.m. Central Time on August 30, 2024 and end during the calendar week beginning September 22, 2024.

1. 01

   Alliant Energy said it notified participants in its 401(k) Savings Plan that a blackout period will begin at 3 p.m. Central Time on August 30, 2024 and end during the calendar week beginning September 22, 2024.

2. 02

   The company said that during the blackout period, plan participants will be unable to change contribution rates or enroll in the plan, change how current or future contributions are invested, request exchanges (transfers) between investment options, or request or obtain loans or distributions from the plan.

3. 03

   Alliant Energy said the blackout is necessary for administrative reasons to implement a change in the plan's service provider, transferring recordkeeping and trustee services to Fidelity Workplace Services, LLC.

4. 04

   In a notice dated July 26, 2024 to its directors and executive officers, the company said they cannot buy, sell, acquire or transfer Alliant Energy common stock, including options and derivatives, during the blackout period, and that this applies whether or not they participate in the Plan.

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