Ignacio A. Cortina

CIK: 0001654634

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (7.5%)

Position reduction

Option Exercises (M)14 (35.0%)

Derivative conversions

Awards (A)11 (27.5%)

Compensation grants

Other (G, F, J, C, D, …)12 (30.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (2)

LNT

ALLIANT ENERGY CORP

Director

OSK

OSHKOSH CORP

Officer

Discretionary Trading P&L

Holdings

Transaction History (40 total)

LNT
ALLIANT ENERGY CORP
Oct 9, 2026
Award(A)
Deferred Common Stock Units
Direct
823 shares at avg. $65.85-
LNT
ALLIANT ENERGY CORP
Jul 10, 2026
Award(A)
Deferred Common Stock Units
Direct
638 shares at avg. $76.40-
LNT
ALLIANT ENERGY CORP
Apr 10, 2026
Award(A)
Deferred Common Stock Units
Direct
667 shares at avg. $73.10-
OSK
OSHKOSH CORP
Feb 20, 2026
Exercise(M)
Direct
4.3K shares at avg. $175.52$754K
OSK
OSHKOSH CORP
Feb 20, 2026
Exercise(M)
Direct
5.7K shares at avg. $175.52$1.0M
OSK
OSHKOSH CORP
Feb 20, 2026
Tax Payment(F)
Direct
2K shares at avg. $175.52$355K
OSK
OSHKOSH CORP
Feb 20, 2026
Tax Payment(F)
Direct
1.4K shares at avg. $175.52$237K
OSK
OSHKOSH CORP
Feb 20, 2026
Exercise(M)
Direct
2.9K shares at avg. $175.52$505K
OSK
OSHKOSH CORP
Feb 20, 2026
Tax Payment(F)
Direct
2.7K shares at avg. $175.52$471K
OSK
OSHKOSH CORP
Feb 19, 2026
Exercise(M)
Direct
2.4K shares at avg. $170.49$404K
OSK
OSHKOSH CORP
Feb 19, 2026
Tax Payment(F)
Direct
1.1K shares at avg. $170.49$190K
OSK
OSHKOSH CORP
Feb 17, 2026
Tax Payment(F)
Direct
1.2K shares at avg. $168.47$210K
OSK
OSHKOSH CORP
Feb 17, 2026
Exercise(M)
Direct
2.6K shares at avg. $168.47$437K
OSK
OSHKOSH CORP
Feb 16, 2026
Award(A)
Restricted Stock Units
Direct
4.8K shares-
LNT
ALLIANT ENERGY CORP
Jan 9, 2026
Award(A)
Deferred Common Stock Units
Direct
750 shares at avg. $65.02-
OSK
OSHKOSH CORP
Nov 21, 2025
Sale(S)
Direct
8K shares at avg. $124.41$995K
LNT
ALLIANT ENERGY CORP
Oct 10, 2025
Award(A)
Deferred Common Stock Units
Direct
696 shares at avg. $67.75-
OSK
OSHKOSH CORP
Aug 12, 2025
Exercise(M)
Direct
5.2K shares at avg. $86.59$452K
OSK
OSHKOSH CORP
Aug 12, 2025
Sale(S)
Direct
7.5K shares at avg. $138.58$1.0M
OSK
OSHKOSH CORP
Aug 12, 2025
Exercise(M)
Direct
7.5K shares at avg. $66.09$496K
OSK
OSHKOSH CORP
Aug 12, 2025
Sale(S)
Direct
5.2K shares at avg. $138.71$725K
LNT
ALLIANT ENERGY CORP
Jul 11, 2025
Award(A)
Deferred Common Stock Units
Direct
759 shares at avg. $62.08-
LNT
ALLIANT ENERGY CORP
Apr 11, 2025
Award(A)
Deferred Common Stock Units
Direct
778 shares at avg. $60.59-
OSK
OSHKOSH CORP
Feb 21, 2025
Exercise(M)
Direct
2.9K shares at avg. $103.17$303K
OSK
OSHKOSH CORP
Feb 21, 2025
Tax Payment(F)
Direct
440 shares at avg. $103.17$45K

		Type	Shares	Price		Ownership
Oct 9, 2026	LNT ALLIANT ENERGY CORP	Award(A) Deferred Common Stock Units	823	$65.85	-	Direct
Jul 10, 2026	LNT ALLIANT ENERGY CORP	Award(A) Deferred Common Stock Units	638	$76.40	-	Direct
Apr 10, 2026	LNT ALLIANT ENERGY CORP	Award(A) Deferred Common Stock Units	667	$73.10	-	Direct
Feb 20, 2026	OSK OSHKOSH CORP	Exercise(M)	4,296	$175.52	$754,034	Direct
Feb 20, 2026	OSK OSHKOSH CORP	Exercise(M)	5,708	$175.52	$1,001,868	Direct
Feb 20, 2026	OSK OSHKOSH CORP	Tax Payment(F)	2,020	$175.52	$354,550	Direct
Feb 20, 2026	OSK OSHKOSH CORP	Tax Payment(F)	1,353	$175.52	$237,479	Direct
Feb 20, 2026	OSK OSHKOSH CORP	Exercise(M)	2,878	$175.52	$505,211	Direct
Feb 20, 2026	OSK OSHKOSH CORP	Tax Payment(F)	2,683	$175.52	$470,920	Direct
Feb 19, 2026	OSK OSHKOSH CORP	Exercise(M)	2,372	$170.49	$404,415	Direct
Feb 19, 2026	OSK OSHKOSH CORP	Tax Payment(F)	1,115	$170.49	$190,096	Direct
Feb 17, 2026	OSK OSHKOSH CORP	Tax Payment(F)	1,246	$168.47	$209,914	Direct
Feb 17, 2026	OSK OSHKOSH CORP	Exercise(M)	2,593	$168.47	$436,849	Direct
Feb 16, 2026	OSK OSHKOSH CORP	Award(A) Restricted Stock Units	4,823	-	-	Direct
Jan 9, 2026	LNT ALLIANT ENERGY CORP	Award(A) Deferred Common Stock Units	750	$65.02	-	Direct
Nov 21, 2025	OSK OSHKOSH CORP	Sale(S)	8,000	$124.41	$995,280	Direct
Oct 10, 2025	LNT ALLIANT ENERGY CORP	Award(A) Deferred Common Stock Units	696	$67.75	-	Direct
Aug 12, 2025	OSK OSHKOSH CORP	Exercise(M)	5,225	$86.59	$452,433	Direct
Aug 12, 2025	OSK OSHKOSH CORP	Sale(S)	7,500	$138.58	$1,039,350	Direct
Aug 12, 2025	OSK OSHKOSH CORP	Exercise(M)	7,500	$66.09	$495,675	Direct
Aug 12, 2025	OSK OSHKOSH CORP	Sale(S)	5,225	$138.71	$724,760	Direct
Jul 11, 2025	LNT ALLIANT ENERGY CORP	Award(A) Deferred Common Stock Units	759	$62.08	-	Direct
Apr 11, 2025	LNT ALLIANT ENERGY CORP	Award(A) Deferred Common Stock Units	778	$60.59	-	Direct
Feb 21, 2025	OSK OSHKOSH CORP	Exercise(M)	2,938	$103.17	$303,113	Direct
Feb 21, 2025	OSK OSHKOSH CORP	Tax Payment(F)	440	$103.17	$45,395	Direct

1-25 of 40 transactions

About Cortina Ignacio A

Cortina Ignacio A (SEC CIK 0001654634) files insider reports with the SEC as Director of ALLIANT ENERGY CORP (LNT) and EVP, CL&AO & Secretary of OSHKOSH CORP (OSK).

Signal8 holds 19 ownership filings by Cortina Ignacio A, all Form 4s, filed between Oct 15, 2024 and Oct 14, 2026. Those filings report 40 transactions, from Oct 11, 2024 to Oct 9, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Cortina Ignacio A's filings is in MADISON, WI.

Recent filings by Cortina Ignacio A

Oct 9, 2026: Grant or award of LNT derivative securities (Form 4, code A).
Jul 10, 2026: Grant or award of LNT derivative securities (Form 4, code A).
Apr 10, 2026: Grant or award of LNT derivative securities (Form 4, code A).
Feb 20, 2026: Option exercises of OSK shares (2 lines, Form 4, code M).
Feb 20, 2026: Tax withholdings of OSK shares (2 lines, Form 4, code F).

Other insiders filing for ALLIANT ENERGY CORP (LNT)

ALLEN PATRICK E, Director
Asthana Manu, Director
Cox Stephanie, Director
Falotico Nancy Joy, Director
Garcia Michael Dennis, Director
Newport Roger K, Director

How to read Form 4 transaction codes