CALIX, INC 8-K

What Happened
Calix, Inc. (CALX) announced on April 21, 2026 (Item 2.02) that it has publicly released a press release and a stockholder letter reporting financial results for the quarter ended March 28, 2026. The stockholder letter presents various non‑GAAP measures intended to show the company’s operating performance excluding certain items.

Key Details

• Filing date: April 21, 2026 (8-K Item 2.02).
• Quarter covered: Quarter ended March 28, 2026 (Q1 2026).
• Non‑GAAP measures disclosed: non‑GAAP gross margin; non‑GAAP operating expenses; non‑GAAP sales & marketing, R&D, and G&A investments; non‑GAAP effective tax rate; non‑GAAP net income (profitability) and non‑GAAP net income per diluted share; non‑GAAP free cash flow.
• Adjustments excluded: non‑cash stock‑based compensation, intangible asset amortization, and impacts from changes in income taxes.
• Reconciliation: A tabular reconciliation of the non‑GAAP measures to the most directly comparable U.S. GAAP results is included in Exhibit 99.2 (the stockholder letter).
• Signature: Report signed by CFO Cory Sindelar.

Why It Matters
Investors should note Calix is emphasizing non‑GAAP metrics to highlight operating performance after removing stock‑based compensation, amortization and tax effects—items management says are not indicative of core results. The reconciliation to GAAP is provided, but non‑GAAP measures can be calculated differently by other companies and are not a substitute for U.S. GAAP results. Review both the GAAP figures and the provided reconciliations to get a complete view of the company’s quarterly earnings and cash‑flow performance.