PINNACLE WEST CAPITAL CORP 8-K

What Happened Pinnacle West Capital Corporation filed a Form 8-K (Regulation FD disclosure, Item 7.01) dated April 15, 2026, stating it will participate in meetings with securities analysts and investors in April 2026 and will use handouts during those meetings. Copies of the handouts are attached to the filing as Exhibit 99.1 (the filing also includes an Inline XBRL cover page, Exhibit 104). The filing does not report earnings, revenue, management changes, or other financial results.

Key Details

• Filing date: April 15, 2026 (Form 8-K, Item 7.01 — Regulation FD Disclosure).
• Event timing: meetings with securities analysts and investors in April 2026.
• Materials provided: handouts attached as Exhibit 99.1 (also references Arizona Public Service Company).
• Technical exhibit: Exhibit 104 is the cover page interactive data file (Inline XBRL).

Why It Matters This filing notifies investors that Pinnacle West will distribute presentation materials at upcoming investor meetings, ensuring those materials are publicly available under Regulation FD. Investors who follow Pinnacle West should review Exhibit 99.1 to see if the handouts contain any updates, guidance, or information relevant to investment decisions. Note that the 8-K itself does not present new earnings or quarterly results.