Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

ALLIANT ENERGY CORP

LNT · Nasdaq · CIK 0000352541 · Utilities · Utilities—Regulated Electric

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

1 Form 4 transaction lines observed in the same window
1 sales · 0 option, withholding, award, gift or other lines

Last qualifying purchase2024-02-20 · Barton Lisa M · $53.4K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesLow
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
DURIAN ROBERT JEVP and CFO
▼
● Purchase▼ Sale○ Other

—

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2024-02-20 · Barton Lisa M.

Recent Form 4 activity

0Purchases
1Sales
24Other Form 4 lines
11SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING1 sale line(s) · context only
OTHER0 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
27,670,572
Previous report
25,496,901
Avg daily volume
3,054,569
Days to cover
9.1

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2024-02-20Sundararajan RajaPurchase (P)Common Stock500USD 48.26USD 24,130SEC filing ↗
2024-02-20Barton Lisa MPurchase (P)Common Stock1,100USD 48.56USD 53,416SEC filing ↗
2022-06-09Falotico Nancy JoyPurchase (P)Common Stock1,200USD 61.00USD 73,200SEC filing ↗

Form 4 evidence

25 transaction lines in the latest 365-day window; 178 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-10DURIAN ROBERT JSale (S)Common Stock0USD 68.60USD 7SEC filing ↗
2026-04-15Smyth Antonio PTax withholding (F)Common Stock1,259USD 72.18USD 90,875SEC filing ↗
2026-02-19Valcq Rebecca C.Tax withholding (F)Common Stock438USD 70.01USD 30,664SEC filing ↗
Show recent Form 4 evidence (18 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-10DURIAN ROBERT JSale (S)Common Stock0USD 68.60USD 7SEC filing ↗
2026-04-15Smyth Antonio PTax withholding (F)Common Stock1,259USD 72.18USD 90,875SEC filing ↗
2026-02-19Valcq Rebecca C.Tax withholding (F)Common Stock438USD 70.01USD 30,664SEC filing ↗
2026-02-19de Leon David ATax withholding (F)Common Stock5,207USD 70.01USD 364,542SEC filing ↗
2026-02-19de Leon David AAward / grant (A)Common Stock10,922USD 0.00USD 0SEC filing ↗
2026-02-19Valcq Rebecca C.Award / grant (A)Common Stock1,004USD 0.00USD 0SEC filing ↗
2026-02-19Syse DylanTax withholding (F)Common Stock506USD 70.01USD 35,425SEC filing ↗
2026-02-19Syse DylanAward / grant (A)Common Stock1,813USD 0.00USD 0SEC filing ↗
2026-02-19Sundararajan RajaTax withholding (F)Common Stock .11,324USD 70.01USD 792,793SEC filing ↗
2026-02-19Sundararajan RajaAward / grant (A)Common Stock .27,552USD 0.00USD 0SEC filing ↗
2026-02-19Smyth Antonio PTax withholding (F)Common Stock6,226USD 70.01USD 435,882SEC filing ↗
2026-02-19Smyth Antonio PAward / grant (A)Common Stock18,354USD 0.00USD 0SEC filing ↗
2026-02-19Farlinger MayuriTax withholding (F)Common Stock1,179USD 70.01USD 82,542SEC filing ↗
2026-02-19Farlinger MayuriAward / grant (A)Common Stock4,124USD 0.00USD 0SEC filing ↗
2026-02-19DURIAN ROBERT JTax withholding (F)Common Stock16,630USD 70.01USD 1,164,266SEC filing ↗
2026-02-19DURIAN ROBERT JAward / grant (A)Common Stock33,832USD 0.00USD 0SEC filing ↗
2026-02-19Barton Lisa MTax withholding (F)Common Stock28,594USD 70.01USD 2,001,866SEC filing ↗
2026-02-19Barton Lisa MAward / grant (A)Common Stock77,060USD 0.00USD 0SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerLNT
CIK0000352541
SectorUtilities
IndustryUtilities—Regulated Electric Yahoo Finance
SEC SIC4931 Electric & Other Services Combined
ExchangeNasdaq

Data coverage

Local Form 4 history178 transaction lines from 2020-02-20 to 2026-08-10
3 P purchase lines · 2 S sale lines · 173 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.