Summary
Updated Aug 31, 2026
Ignacio A. Cortina is Director of ALLIANT ENERGY CORP (LNT). 11 SEC Form 4 filings on record going back to 2024, most recently on 14 July 2026. Most recent open-market trade: sold $995K of OSK on 24 November 2025. Lifetime open-market sales: $2.76M.
Recent Transactions
17Every recent SEC Form 4 transaction Ignacio A. Cortina has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Ignacio A. Cortina go back to 2024: 11 primary Form 4 filings, an average of 3.7 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Ignacio A. Cortina files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Robert J. Durian - $7 of LNT open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Ignacio A. Cortina?
Ignacio A. Cortina is a corporate insider, tracked as Director of ALLIANT ENERGY CORP (LNT). InsiderAlpha holds 11 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Ignacio A. Cortina submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Ignacio A. Cortina been buying or selling stock?
Recorded transactions: 0 open-market purchases and 3 open-market sales ($2.76M) across all tracked filings.
Where can I see all of Ignacio A. Cortina's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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