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ALLIANT ENERGY CORP

For the period ended Mar 31, 2024. Filed May 3, 2024.

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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.

Mar 31, 2024 · Filed May 3, 2024

LNT$73.46+1.1%Stored close · as of Nov 9, 2026

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. Benefit Plans

NOTE 10. BENEFIT PLANS

NOTE 10(a) Pension and OPEB Plans -

Net Periodic Benefit Costs -The components of net periodic benefit costs for sponsored defined benefit pension and OPEB plans for the three months ended March 31 are included below (in millions). For IPL and WPL, amounts are for their plan participants covered under plans they sponsor, as well as amounts directly assigned to them related to certain participants in the Alliant Energy and Corporate Services sponsored plans.

Defined Benefit Pension PlansOPEB Plans
Alliant Energy2024202320242023
Service cost$1$1$—$1
Interest cost111122
Expected return on plan assets(13)(13)(1)(1)
Amortization of actuarial loss67——
$5$6$1$2
Defined Benefit Pension PlansOPEB Plans
IPL2024202320242023
Service cost$1$1$—$—
Interest cost5511
Expected return on plan assets(7)(7)(1)(1)
Amortization of actuarial loss23——
$1$2$—$—
Defined Benefit Pension PlansOPEB Plans
WPL2024202320242023
Interest cost$5$5$1$1
Expected return on plan assets(6)(5)——
Amortization of actuarial loss33——
$2$3$1$1

NOTE 10(b) Equity-based Compensation Plans -A summary of compensation expense, including amounts allocated to IPL and WPL, and the related income tax benefits recognized for share-based compensation awards for the three months ended March 31 was as follows (in millions):

Alliant EnergyIPLWPL
202420232024202320242023
Compensation expense$4$3$2$2$2$1
Income tax benefits111———

As of March 31, 2024, Alliant Energy’s, IPL’s and WPL’s total unrecognized compensation cost related to share-based compensation awards was $22 million, $11 million and $10 million, respectively, which is expected to be recognized over a weighted average period of between 1 year and 2 years.

For the three months ended March 31, 2024, performance shares and restricted stock units were granted to key employees under the equity-based compensation plans as follows. These shares and units will be paid out in shares of common stock, and are therefore accounted for as equity awards.

Weighted Average
GrantsGrant Date Fair Value
Performance shares (total shareowner return metric)123,098$46.04
Performance shares (net income and diversity metrics) (formerly granted as performance restricted stock units)140,68348.40
Restricted stock units120,55748.40

As of March 31, 2024,242,680 shares were included in the calculation of diluted EPS related to the nonvested equity awards.

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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.