Company

ADTRAN Holdings, Inc. (ADTN)

Standardized SEC financial data for ADTRAN Holdings, Inc. — income statement, balance sheet, cash flow and 40+ ratios, available as a clean JSON API. CIK 0000926282 · NASDAQ · Telephone & Telegraph Apparatus.

Gross margin

38.3%

Operating margin

-1.4%

Net margin

-4.2%

Revenue growth (YoY)

17.5%

Return on equity

-31.3%

ROIC

-12.4%

Free cash flow

$98.0M

Debt / equity

0.34×

Ratios for fiscal year 2025, standardized from SEC filings.

Income statement

USD	FY2020	FY2021	FY2022	FY2023	FY2024	FY2025
Revenue	$506.5M	$563.0M	$1.03B	$1.15B	$922.7M	$1.08B
Cost of revenue	$289.0M	$344.6M	$698.3M	$818.0M	$598.6M	$668.9M
Gross profit	$217.6M	$218.4M	$327.3M	$331.1M

Balance sheet

USD	FY2021	FY2022	FY2022	FY2023	FY2024	FY2025
Cash & equivalents	$57.0M	—	$108.9M	$87.2M	$76.0M	$95.7M
Inventory	$139.9M	—	$427.5M	$360.4M	$261.6M	$215.7M
Total current assets	$376.3M	—	$882.4M	$719.0M

Cash flow

USD	FY2020	FY2021	FY2022	FY2023	FY2024	FY2025
Operating cash flow	-$16.5M	$3.0M	-$44.2M	-$43.0M	$103.6M	$129.8M
Capital expenditures	$6.4M	$5.7M	$17.1M	$36.3M	$34.5M	$31.7M
Free cash flow	-$22.9M	-$2.7M	-$61.3M	-$79.4M

Get ADTN data via API

# JSON
curl https://sec-financial-api-production.up.railway.app/v1/company/ADTN/financials \
  -H "X-API-Key: YOUR_KEY"

# CSV export (income / balance / cash-flow)
curl "https://sec-financial-api-production.up.railway.app/v1/company/ADTN/income-statement?format=csv" \
  -H "X-API-Key: YOUR_KEY"

Get a free API key Use with Claude (MCP) →View ADTN filings on SEC EDGAR →