Alliant Energy (LNT) investor relations material

Executive summary

• The annual meeting will be held virtually on May 20, 2026, with shareholders voting on director elections, executive compensation, and auditor ratification.

• Four directors are nominated for terms expiring in 2029, and Deloitte & Touche LLP is proposed as the independent auditor for 2026.

• Shareholders of record as of March 16, 2026, are eligible to vote, with multiple voting methods available.

Voting matters and shareholder proposals

• Proposals include electing four directors, an advisory vote on executive compensation, and ratification of Deloitte & Touche LLP as auditor.

• The board recommends voting FOR all proposals.

• Shareholder proposals for the 2027 meeting are due by December 1, 2026, for inclusion in the proxy statement.

Board of directors and corporate governance

• Ten of eleven directors are independent; the board chair is independent.

• Board diversity includes 45% women and 27% racial/ethnic diversity.

• Committees include Audit, Compensation, Nominating and Governance, Operations, and Executive, all with independent members.

• Annual board and committee self-assessments and majority voting bylaw for uncontested elections.

• Directors must retire at age 70, with no exceptions.