ONTO INNOVATION INC. 8-K

What Happened

• ONTO INNOVATION Inc. filed a Form 8-K on April 16, 2026 to announce a press release that provides a preliminary estimate of revenue for its fiscal first quarter ended March 31, 2026 and establishes guidance for the fiscal second quarter ending June 30, 2026. The press release is attached as Exhibit 99.1 to the 8-K.

Key Details

• Filing date: April 16, 2026; quarter covered: Q1 ended March 31, 2026.
• The company issued preliminary revenue information for Q1 2026 and set guidance for Q2 2026 (quarter ending June 30, 2026).
• Press release is attached as Exhibit 99.1 to the Form 8-K.
• The 8-K states the press release information is preliminary and not deemed “filed” under Section 18 of the Exchange Act (limiting certain liabilities and incorporation by reference).

Why It Matters

• Preliminary revenue estimates and quarterly guidance give investors an early look at the company’s recent performance and near-term outlook ahead of formal earnings/10-Q filings.
• Because the information is preliminary and explicitly not “filed” for certain legal purposes, investors should review the attached press release and wait for the company’s formal quarterly report for final, audited results before making investment decisions.