Cortina Ignacio A

Ignacio A. Cortina's Form 4 record spans two companies with sharply different patterns. At Oshkosh Corp, where he has filed 303 transactions since 2015, every one of the 112,232 total shares moved is a sale — zero open-market purchases. The activity reads as routine equity-compensation realization rather than discretionary trading: in August 2025, for example, Cortina exercised 7,500 options at a $66.09 strike price and sold the shares the same day at $138.58, and separately exercised 5,225 options at $86.59 and sold at $138.71 — capturing the spread built into vested awards, a standard pattern also visible in a February 2025 sequence of option exercises (codes M) paired with tax-withholding transactions (codes F) around $103-$110 per share. At Alliant Energy Corp, by contrast, Cortina's 11 transactions since January 2024 are entirely stock-award grants (code A) — roughly 640 to 780 shares landing on a quarterly cadence, with zero sales recorded. The two records tell different stories about the same person: consistent realization of vested equity value at Oshkosh, and steady, unsold accumulation of new grants at Alliant Energy.