InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Insider track record
OtherDisclosed buys
0
Disclosed sells
0
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Discover the detailed record of transactions filed by de Leon David A. Insider active across 1 company, notably Alliant Energy CORP. In total, 10 disclosures have been recorded. Activity tracked since 31 December 2021. The latest transaction was filed on 19 February 2026 (Attribution). Regulator: SEC (Form 4). The full history is accessible without signup.
Companies and markets linked to de Leon David A
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations10 total
8,616 shares0Common StockSEC:0001763201-26-000001:0
3,256.204 shares0Common StockSEC:0000352541-25-000021:0
465 shares0Common StockSEC:0000352541-24-000061:0
6,981 shares0Common StockSEC:0000352541-24-000016:0
2,386 shares0Common StockSEC:0000352541-24-000016:1
4,269 shares@ US$48.4046.4% of flowCommon StockSEC:0000352541-24-000016:2
6,457 shares0Common StockSEC:0000352541-23-000023:0
4,300 shares@ US$57.8753.6% of flowCommon StockSEC:0000352541-22-000030:0
7,526 shares0Common StockSEC:0000352541-22-000024:0
1,599 shares0Common StockSEC:0000352541-22-000003:0
10 of 10 declarations
About de Leon David A
de Leon David A is a declarant linked to Alliant Energy CORP, where he holds the role of Senior Vice President. The record contains 10 filings in total. The 10 sampled filings run from 2022-01-04 to 2026-02-23, with the transaction nature shown as Attribution, and the largest individual published amounts are EUR 222364.3085449043 on 2022-03-01 and EUR 192523.9997606073 on 2024-02-20.
