ALLIANT ENERGY CORP (LNT) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-07-14

ALLIANT ENERGY CORP (LNT) has filed 8 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-14. 2 Form 8-K material event filings were reported by LNT in the last 90 days. InsiderAlpha tracks every LNT SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About ALLIANT ENERGY CORP (LNT)

SIC classificationElectric & Other Services Combined (SIC 4931)
SEC CIK0000352541

90-Day SEC Filing Activity

Form 4 filings (90d)8
Form 8-K filings (90d)2
Latest Form 4 filing2026-07-14

Recent LNT Insider Transactions (Form 4)

DateInsiderRoleTransactionSharesPriceValueFiling
Smyth Antonio PExecutive Vice PresidentF — Tax withholding / forfeiture1.3K$72.18$91KSEC
Barton Lisa MPresident and CEOA — Grant or award47.5K$0.00—SEC
Barton Lisa MPresident and CEOA — Grant or award29.5K$0.00—SEC
Barton Lisa MPresident and CEOF — Tax withholding / forfeiture28.6K$70.01$2.00MSEC
Valcq Rebecca C.Vice PresidentA — Grant or award1.0K$0.00—SEC
de Leon David ASenior Vice PresidentA — Grant or award8.6K$0.00—SEC
de Leon David ASenior Vice PresidentA — Grant or award2.3K$0.00—SEC
de Leon David ASenior Vice PresidentF — Tax withholding / forfeiture5.2K$70.01$365KSEC
DURIAN ROBERT JEVP and CFOA — Grant or award27.9K$0.00—SEC
DURIAN ROBERT JEVP and CFOA — Grant or award6.0K$0.00—SEC
DURIAN ROBERT JEVP and CFOF — Tax withholding / forfeiture16.6K$70.01$1.16MSEC
Farlinger MayuriVice PresidentA — Grant or award3.0K$0.00—SEC
Farlinger MayuriVice PresidentF — Tax withholding / forfeiture1.2K$70.01$83KSEC
Smyth Antonio PExecutive Vice PresidentA — Grant or award13.1K$0.00—SEC
Smyth Antonio PExecutive Vice PresidentA — Grant or award5.2K$0.00—SEC

All transactions sourced from SEC EDGAR Form 4 filings for ALLIANT ENERGY CORP (LNT). Updated in real time as new filings are submitted to the SEC.

Most-Active LNT Insiders — Last 90 Days

InsiderForm 4 filingsTotal transaction value
Newport Roger K1$56K
Cox Stephanie1$40K
Garcia Michael Dennis1$64K
Cortina Ignacio A1$49K
Falotico Nancy Joy1$57K

Recent LNT Form 8-K Material Events

Recent Insider Filings

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in LNT insider filings:

POpen-market purchase by the insider
SOpen-market sale by the insider
AGrant, award, or other acquisition from the issuer
MExercise or conversion of derivative security (e.g. options)
FPayment of exercise price or tax liability via share withholding
GBona-fide gift of securities
DDisposition to the issuer (e.g. share buyback participation)
JOther acquisition or disposition
XExercise of in-the-money or at-the-money derivative security
CConversion of derivative security
VTransaction voluntarily reported earlier than required

LNT Insider Trading — FAQ

What is the latest insider trade for LNT?
ALLIANT ENERGY CORP (LNT) had 8 insider filings in the last 90 days, with the most recent on 2026-07-14. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying LNT stock?
0 insider purchases of LNT were filed in the last 90 days.
How many insiders are selling LNT stock?
0 insider sales of LNT were filed in the last 90 days.
Where can I see LNT SEC filings (Form 4, 10-K, 10-Q, 8-K)?
InsiderAlpha aggregates every LNT SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Related Companies — Recent Insider Activity

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