ALLIANT ENERGY CORP

For the period ended Sep 30, 2026. Filed Oct 30, 2026.

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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 Oct 30, 2026

LNT$73.24-0.3%Stored close · as of Nov 10, 2026

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Alliant Energy Corporation

For the Three Months · For the Nine Months
	Ended September 30,		Ended September 30,
	2026	2025	2026	2025
(in millions, except per share amounts)
Revenues:
Electric utility	$1,202	$1,124	$2,951	$2,828
Gas utility	56	51	408	366
Other utility	1	12	6	37
Non-utility	26	23	75	67
Total revenues	1,285	1,210	3,440	3,298
Operating expenses:
Electric production fuel and purchased power	222	239	522	564
Electric transmission service	176	166	490	474
Cost of gas sold	13	12	223	180
Other operation and maintenance	228	204	618	530
Depreciation and amortization	223	211	665	631
Taxes other than income taxes	34	29	99	91
Total operating expenses	896	861	2,617	2,470
Operating income	389	349	823	828
Other (income) and deductions:
Interest expense	145	128	430	372
Equity income from unconsolidated investments, net	(45)	(18)	(110)	(41)
Allowance for funds used during construction	(38)	(24)	(99)	(65)
Other	(4)	—	(9)	3
Total other (income) and deductions	58	86	212	269
Income before income taxes	331	263	611	559
Income tax benefit	(67)	(18)	(181)	(109)
Net income attributable to Alliant Energy common shareowners	$398	$281	$792	$668
Weighted average number of common shares outstanding:
Basic	259.3	257.0	258.4	256.9
Diluted	261.0	257.8	260.2	257.5
Earnings per weighted average common share attributable to Alliant Energy common shareowners:
Basic	$1.53	$1.09	$3.07	$2.60
Diluted	$1.52	$1.09	$3.04	$2.59

	September 30,2026	December 31,2025
(in millions, except pershare and share amounts)
ASSETS
Current assets:
Cash and cash equivalents	$26	$556
Accounts receivable, less allowance for expected credit losses	529	476
Production fuel, at weighted average cost	53	46
Gas stored underground, at weighted average cost	52	49
Materials and supplies, at weighted average cost	221	193
Regulatory assets	196	155
Other	221	222
Total current assets	1,298	1,697
Property, plant and equipment, net	21,607	20,344
Investments:
ATC Holdings	522	463
Other	272	231
Total investments	794	694
Other assets:
Regulatory assets	2,147	2,119
Deferred charges and other	108	137
Total other assets	2,255	2,256
Total assets	$25,954	$24,991

LIABILITIES AND EQUITY
Current liabilities:
Current maturities of long-term debt	$374	$1,074
Commercial paper	704	88
Other short-term borrowings	400	—
Accounts payable	599	498
Accrued interest	141	124
Regulatory liabilities	34	88
Other	300	251
Total current liabilities	2,552	2,123
Long-term debt, net (excluding current portion)	11,085	10,954
Other liabilities:
Deferred tax liabilities	2,345	2,310
Regulatory liabilities	1,009	1,113
Pension and other benefit obligations	133	173
Other	1,022	984
Total other liabilities	4,509	4,580
Commitments and contingencies (Note 12)
Equity:
Alliant Energy Corporation common equity:
Common stock - $0.01 par value - 480,000,000 shares authorized; 259,361,652 and 257,137,261 shares outstanding	3	3
Additional paid-in capital	3,193	3,101
Retained earnings	4,622	4,243
Accumulated other comprehensive income	5	1
Shares in deferred compensation trust - 360,181 and 367,338 shares at a weighted average cost of $41.28 and $39.05 per share	(15)	(14)
Total Alliant Energy Corporation common equity	7,808	7,334
Total liabilities and equity	$25,954	$24,991

	For the Nine Months
	Ended September 30,
	2026	2025
(in millions)
Cash flows from operating activities:
Net income	$792	$668
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	665	631
Deferred tax benefit and tax credits	(199)	(125)
Equity income from unconsolidated investments, net	(110)	(41)
Other	65	43
Other changes in assets and liabilities:
Accounts receivable	(332)	(391)
Regulatory liabilities	(38)	107
Deferred income taxes (a)	141	101
Other	(75)	(93)
Net cash flows from operating activities	909	900
Cash flows used for investing activities:
Construction and acquisition expenditures:
Utility business	(1,643)	(1,487)
Other	(163)	(161)
Cash receipts on sold receivables	318	332
Purchases of short-term investments	—	(250)
Other	(50)	(39)
Net cash flows used for investing activities	(1,538)	(1,605)
Cash flows from financing activities:
Common stock dividends	(413)	(391)
Proceeds from issuance of long-term debt	496	2,174
Proceeds from issuance of other short-term borrowings	400	—
Payments to retire long-term debt	(1,075)	(300)
Net change in commercial paper	616	(366)
Other	75	10
Net cash flows from financing activities	99	1,127
Net increase (decrease) in cash, cash equivalents and restricted cash	(530)	422
Cash, cash equivalents and restricted cash at beginning of period	556	81
Cash, cash equivalents and restricted cash at end of period	$26	$503
Supplemental cash flows information:
Cash (paid) received during the period for:
Interest	($413)	($373)
Income taxes, net (a)	$95	$108
Significant non-cash investing and financing activities:
Accrued capital expenditures	$273	$246
Beneficial interest obtained in exchange for securitized accounts receivable	$193	$231

(a)2026 and 2025 include $102 million and $117 million, respectively, of proceeds from renewable tax credits transferred to other corporate taxpayers.

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