Flagship explainer

How ADTRAN Holdings, Inc. makes its money

Start with a dollar of revenue and follow what the filing says remains.

revenueBranching filed flows with values and percentages directly labeled. Missing filing concepts are omitted rather than estimated.Revenue$1.1B · 100%Cost of revenue$669M · 62%Gross profit$415M · 38%Operating income−$15.6M · −1%Income before tax−$31.3M · −3%Income tax$5M · 0%Net income−$45.7M · −4%As of 2025-12-31 · 1 SEC filing sourceBuy Like Buffett · buylikebuffett.com

Honest partial: the filing did not provide a normalized tag for Research and development, Selling, general and administrative; those components are omitted, not plugged.

Table alternative
Filed lineValue% of revenueSource
$1.1B100%
Cost of revenue$669M62%
$415M38%
−$15.6M−1%
Income before tax−$31.3M−3%
Income tax$5M0%
−$45.7M−4%
Source: · event Dec 31, 2025 · retrieved Oct 17, 2026 · annual-row source set
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ADTN income explainer — Buy Like Buffett · Buy Like Buffett