PINNACLE WEST CAPITAL CORP 8-K

What Happened
Pinnacle West Capital Corporation (PNW) filed an 8-K on May 4, 2026 furnishing its first-quarter 2026 results. The company provided an earnings news release and a Q1 2026 slide presentation (Exhibits 99.1 and 99.2) under Item 2.02 (Results of Operations and Financial Condition) and Item 7.01 (Regulation FD Disclosure). The filing also includes the cover page Inline XBRL file (Exhibit 104.0). The slide deck is described as accompanying a May 4, 2026 conference call.

Key Details

• Filing date: May 4, 2026.
• Items furnished: Item 2.02 (Results of Operations and Financial Condition) and Item 7.01 (Regulation FD Disclosure).
• Exhibits included: 99.1 — Earnings news release (May 4, 2026); 99.2 — Q1 2026 results slide presentation (accompanying May 4, 2026 conference call); 104.0 — Cover Page Inline XBRL.
• Information was furnished (not filed) with the SEC, per the 8-K wording.

Why It Matters
This 8-K is the company’s formal public release of its Q1 2026 performance and related investor materials. Investors should review the earnings release and slide presentation for specific results (revenue, net income or EPS, operational metrics, and any commentary or guidance) because the 8-K confirms these materials were publicly disclosed. The Regulation FD disclosure note signals Pinnacle West intended the information to be broadly available to all investors at the same time. For exact figures and management commentary, consult Exhibits 99.1 and 99.2 attached to the filing.