(TDC)

Role: Chief Financial Officer
Signature: /s/ Juliet C. Shadoan, Attorney-in-fact for Claire Bramley
Stock symbol: TDC
Transactions as of: May 12, 2023
Transactions value $: -$200,183
Form type: 4
Date filed: 5/15/2023, 04:30 PM
Previous filing: Mar 8, 2023
Next filing: Jun 16, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TDC	Common Stock	Sale	-$200K	-4.53K	-3.61%	$44.21	121K	May 12, 2023	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id	Content
F1	Sale of shares pursuant to Rule 10b5-1 trading plan adopted by the Reporting Person.