ALLIANT ENERGY CORP (LNT) Insider Transactions
Over the last 12 months, 15 ALLIANT ENERGY CORP (LNT) insiders filed 49 SEC Form 4 transactions — $0 in open-market purchases ( 0 distinct buyers) and $0 in open-market sales. 0% of all transactions were executed under a pre-scheduled Rule 10b5-1 trading plan.
- $0Open-market buys (1y)
- $0Open-market sells (1y)
- 15Distinct insiders
- 49Transactions filed
- 0%Under Rule 10b5-1 plan
- 2026-04-15Latest filing
Recent Form 4 Filings Most recent 49 of 49 (1-year window)
Each row is a single Form 4 filing event for LNT, sourced directly from SEC EDGAR. The Type column classifies the SEC transaction code into Buy / Sell / Grant / Exercise / Other; the 10b5-1 badge marks trades executed under a pre-scheduled SEC Rule 10b5-1 plan.
| Date | Insider | Title | Type | SEC Code | Value | Shares | Price |
|---|---|---|---|---|---|---|---|
| 2026-04-15 | Smyth Antonio P | Executive Vice President | Other | F | $90.9K | 1,259 | $72.18 |
| 2026-04-10 | ALLEN PATRICK E | — | Grant | A | $37.5K | 513 | $73.10 |
| 2026-04-10 | Cortina Ignacio A | — | Grant | A | $48.8K | 667 | $73.10 |
| 2026-04-10 | Cox Stephanie | — | Grant | A | $40.0K | 547 | $73.10 |
| 2026-04-10 | Falotico Nancy Joy | — | Grant | A | $56.9K | 778 | $73.10 |
| 2026-04-10 | Garcia Michael Dennis | — | Grant | A | $64.0K | 876 | $73.10 |
| 2026-04-10 | Newport Roger K | — | Grant | A | $56.3K | 769 | $73.10 |
| 2026-04-10 | Raymond Christie | — | Grant | A | $76.3K | 1,043 | $73.10 |
| 2026-02-19 | Barton Lisa M | President and CEO | Grant | — | $0 | 47,533 | $0.00 |
| 2026-02-19 | Barton Lisa M | President and CEO | Grant | — | $0 | 29,527 | $0.00 |
| 2026-02-19 | Barton Lisa M | President and CEO | Grant | — | $2.0M | 28,594 | $70.01 |
| 2026-02-19 | Valcq Rebecca C. | Vice President | Grant | — | $0 | 1,004 | $0.00 |
| 2026-02-19 | de Leon David A | Senior Vice President | Grant | — | $0 | 8,616 | $0.00 |
| 2026-02-19 | de Leon David A | Senior Vice President | Grant | — | $0 | 2,306 | $0.00 |
| 2026-02-19 | de Leon David A | Senior Vice President | Grant | — | $364.5K | 5,207 | $70.01 |
| 2026-02-19 | DURIAN ROBERT J | EVP and CFO | Grant | — | $0 | 27,882 | $0.00 |
| 2026-02-19 | DURIAN ROBERT J | EVP and CFO | Grant | — | $0 | 5,950 | $0.00 |
| 2026-02-19 | DURIAN ROBERT J | EVP and CFO | Grant | — | $1.2M | 16,630 | $70.01 |
| 2026-02-19 | Farlinger Mayuri | Vice President | Grant | — | $0 | 3,026 | $0.00 |
| 2026-02-19 | Farlinger Mayuri | Vice President | Grant | — | $0 | 1,098 | $0.00 |
| 2026-02-19 | Farlinger Mayuri | Vice President | Grant | — | $82.5K | 1,179 | $70.01 |
| 2026-02-19 | Smyth Antonio P | Executive Vice President | Grant | — | $0 | 13,114 | $0.00 |
| 2026-02-19 | Smyth Antonio P | Executive Vice President | Grant | — | $0 | 5,240 | $0.00 |
| 2026-02-19 | Smyth Antonio P | Executive Vice President | Grant | — | $435.9K | 6,226 | $70.01 |
| 2026-02-19 | Sundararajan Raja | Executive Vice President | Grant | — | $0 | 18,768 | $0.00 |
| 2026-02-19 | Sundararajan Raja | Executive Vice President | Grant | — | $0 | 8,784 | $0.00 |
| 2026-02-19 | Sundararajan Raja | Executive Vice President | Grant | — | $792.8K | 11,324 | $70.01 |
| 2026-02-19 | Syse Dylan | CAO and Controller | Grant | — | $0 | 1,063 | $0.00 |
| 2026-02-19 | Syse Dylan | CAO and Controller | Grant | — | $0 | 750 | $0.00 |
| 2026-02-19 | Syse Dylan | CAO and Controller | Grant | — | $35.4K | 506 | $70.01 |
| 2026-01-09 | ALLEN PATRICK E | — | Grant | — | $37.5K | 577 | $65.02 |
| 2026-01-09 | Cortina Ignacio A | — | Grant | — | $48.7K | 750 | $65.02 |
| 2026-01-09 | Cox Stephanie | — | Grant | — | $40.0K | 615 | $65.02 |
| 2026-01-09 | Falotico Nancy Joy | — | Grant | — | $56.9K | 875 | $65.02 |
| 2026-01-09 | Garcia Michael Dennis | — | Grant | — | $64.0K | 984 | $65.02 |
| 2026-01-09 | Newport Roger K | — | Grant | — | $56.2K | 865 | $65.02 |
| 2026-01-09 | Raymond Christie | — | Grant | — | $76.2K | 1,173 | $65.02 |
| 2025-10-10 | Newport Roger K | — | Grant | — | $54.4K | 803 | $67.75 |
| 2025-10-10 | Garcia Michael Dennis | — | Grant | — | $62.0K | 915 | $67.75 |
| 2025-10-10 | Raymond Christie | — | Grant | — | $73.8K | 1,089 | $67.75 |
| 2025-10-10 | Falotico Nancy Joy | — | Grant | — | $59.1K | 872 | $67.75 |
| 2025-10-10 | Cox Stephanie | — | Grant | — | $72.5K | 1,070 | $67.75 |
| 2025-10-10 | Cortina Ignacio A | — | Grant | — | $47.1K | 696 | $67.75 |
| 2025-07-11 | Cortina Ignacio A | — | Grant | — | $47.1K | 759 | $62.08 |
| 2025-07-11 | Cox Stephanie | — | Grant | — | $72.5K | 1,168 | $62.08 |
| 2025-07-11 | Falotico Nancy Joy | — | Grant | — | $59.1K | 952 | $62.08 |
| 2025-07-11 | Garcia Michael Dennis | — | Grant | — | $62.0K | 998 | $62.08 |
| 2025-07-11 | Newport Roger K | — | Grant | — | $54.4K | 876 | $62.08 |
| 2025-07-11 | Raymond Christie | — | Grant | — | $73.8K | 1,188 | $62.08 |
Methodology & FAQ
How We Track LNT Insider Transactions
Form 4 disclosures are sourced directly from SEC EDGAR and re-ingested on every pipeline cycle. A complete description of transaction-code handling, the open-market vs grant distinction, and the Rule 10b5-1 plan-reference heuristic is documented in the Methodology.
What is an SEC Form 4 filing for ALLIANT ENERGY CORP?
Form 4 is a transaction-level disclosure that corporate insiders — officers, directors, and beneficial owners of more than 10% of a registered class of equity securities — must file with the SEC within two business days of any change in their beneficial ownership of ALLIANT ENERGY CORP (LNT) shares.
What is a Rule 10b5-1 trading plan?
Rule 10b5-1 is an SEC rule that lets insiders schedule trades in advance under a written plan, providing an affirmative defense against insider-trading allegations as long as the plan was adopted in good faith and not while in possession of material non-public information. Form 4 rows marked "10b5-1" on this page indicate the underlying trade was executed under such a plan; rows without the badge are discretionary or did not reference a plan in the Form 4 footnotes.
How is "insider buying" different from a stock grant or option exercise?
An insider buy (SEC transaction code P) is an open-market purchase of ALLIANT ENERGY CORP (LNT) stock executed at the prevailing market price using the insider's personal capital. Stock grants (code A) and option exercises (code M) are compensation events, not directional trades; they are tracked separately and excluded from the "conviction" signal because they are not discretionary purchases.
How recent is the data?
Form 4 transactions are typically reported within two business days of execution. Pactolio re-ingests the EDGAR feed on a nightly cycle and reflects new filings on the next ingest run, typically within 24 hours of EDGAR acceptance. The table on this page covers the most recent 1-year window.