Screener / SEC EDGAR /CIK 0000732717 /10-K filed Feb 9, 2026, compared with Feb 12, 2025 /Numbers from the XBRL of the 10-Ks
NYSE Communication · Telecom

AT&T T

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Revised numbers, fiscal years since 2020

5 numbers reported differently in a later 10-K

XBRL, 6 10-Ks
Numbers revised 5 changes of 0.5% or more
Restatements 0 the company said the earlier number was wrong (8-K item 4.02)
Largest change +30.7% Operating income, Fiscal year ending Dec 31, 2020

A change is a restatement (the company says the earlier number was wrong) or a recast: after selling a business, adopting an accounting rule or moving amounts between lines, companies redo past years. The later 10-K's notes say which.

First reported, then reported again

Number by number · each number links to its 10-K

Each bar is the change from the number first reported to the number a later 10-K gives, on one scale.

NumberPeriodFirst reportedLater reportedChange
Revenue
Revenues · link
Fiscal year ending Dec 31, 2021 $168.86B
10-K filed Feb 16, 2022
$134.04B
10-K filed Feb 13, 2023
-20.6%
Operating income
OperatingIncomeLoss · link
Fiscal year ending Dec 31, 2021 $23.35B
10-K filed Feb 16, 2022
$25.90B
10-K filed Feb 13, 2023
+10.9%
Receivables
AccountsReceivableNetCurrent · link
At Dec 31, 2021 $17.57B
10-K filed Feb 16, 2022
$12.31B
10-K filed Feb 13, 2023
-29.9%
Revenue
Revenues · link
Fiscal year ending Dec 31, 2020 $171.76B
10-K filed Feb 25, 2021
$143.05B
10-K filed Feb 13, 2023
-16.7%
Operating income
OperatingIncomeLoss · link
Fiscal year ending Dec 31, 2020 $6.41B
10-K filed Feb 25, 2021
$8.37B
10-K filed Feb 13, 2023
+30.7%

From SEC's XBRL company facts (6 10-K filings). Checked: revenue, operating income, net income, cash from operations, total assets, shareholders' equity, receivables and inventory. Per-share numbers are left out because stock splits change them.

Sources

SEC's XBRL company facts: each 10-K's number for a year, against the number a later 10-K gives for the same year and line.

Also

Accounting checks: the checks run on the latest 10-K.

Work with it

Excel workbook · CSV. Google Sheet that stays up to date: paste =IMPORTDATA("https://tickdelta.com/company/T/export.csv") into a cell.

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