How to calculate your cost basis and access cost basis worksheets

Using your own records, first determine the date you acquired your shares and the cost per share at that time.

• If you acquired your shares through participation in the dividend reinvestment plan, use your own records to compute the average cost of all shares purchased through the plan.

Second, did you own AT&T common stock (T) as of the close of business on April 5, 2022, the record date for distribution of shares of SpinCo as part of the WarnerMedia/Discovery transaction? If so, you received an ownership interest in Warner Bros. Discovery (WBD) following the distribution.¹

If YES, use this worksheet below to calculate the allocation of your cost basis between AT&T Inc. and WBD common stock.

• AT&T Inc. / WBD
  • If you acquired your AT&T Inc. shares on or after March 20, 1998 (the date of the last stock split), your cost basis before the SpinCo Distribution is the same as the actual price paid for the shares. If you acquired your AT&T shares through a previous acquisition or merger transaction, please proceed to the next bullet point.
  • If you acquired your AT&T shares prior to March 20, 1998 (the date of the last stock split) or through a previous acquisition or merger transaction, then first calculate your AT&T Cost Basis on one of the other worksheets below and then use that output for the AT&T Inc. / WBD allocation above.

If NO, then go to the worksheet below that matches your path toward AT&T Inc. ownership to calculate your cost basis of your AT&T Inc. common stock:

• AT&T Inc. shares (formerly SBC Communications Inc./Southwestern Bell Corporation)
• DIRECTV
• BellSouth Corporation
• AT&T Corp.
• Southern New England Telecommunications Corporation
• Ameritech Corporation
• Pacific Telesis Group
• Time Warner

If you acquired shares through more than one method or at different times, you will need to use the appropriate worksheet for each share acquisition. These interactive worksheets automatically factor in the effect of events listed above and historical stock splits. These worksheets will help you arrive at your cost basis.

¹ If you separately purchased the right to a WBD dividend (either separately or bundled with an AT&T share) after April 5^th and prior to closing, please consult your tax advisor.

Important Disclaimer:

If your circumstances are different, or if you have any questions, we encourage you to consult your tax adviser.

We don’t take responsibility if there are mistakes in the model or if it doesn’t accurately represent tax law or if tax law has changed since these transactions took place.

The model uses the average of the day’s high and low to determine some values for tax purposes. Other methodologies may provide better tax outcomes.

Check with your tax advisor to ensure these calculations are correct and that you are following the latest IRS rules.

Contact Information

For individual stockholders and brokers, call Computershare at 1-800-351-7221.