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.
Anupam Khare - $676K in OSK purchases and sales in the last 12 months
John S. Verich - $186K in OSK purchases and sales in the last 12 months
John C. Pfeifer - $117K in OSK purchases and sales in the last 12 months
Duncan Palmer - $68K in OSK purchases and sales in the last 12 months
Robert J. Durian - $7 in LNT purchases and sales in the last 12 months
More insiders (A-Z)
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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.
When did Ignacio A. Cortina last file a Form 4?
The most recent primary Form 4 on record is dated 14 July 2026, one of 11 filings going back to 2024.
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.
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
17
The latest 17 SEC Form 4 transactions reported by Ignacio A. Cortina.
InsiderAlpha's records for Ignacio A. Cortina go back to 2024: 11 primary Form 4 filings, an average of 3.7 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
