(TDC)

Role: Director
Signature: /s/ Juliet C. Shadoan, Attorney-in-fact for Timothy C.K. Chou
Stock symbol: TDC
Transactions as of: May 22, 2025
Transactions value $: -$135,695
Form type: 4
Date filed: 5/27/2025, 04:13 PM
Previous filing: May 19, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
CHOU TIMOTHY C K	Director	17095 VIA DEL CAMPO, SAN DIEGO	/s/ Juliet C. Shadoan, Attorney-in-fact for Timothy C.K. Chou	2025-05-27	0001202967

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TDC	Common Stock	Sale	-$136K	-6.22K	-14.7%	$21.83	36.1K	May 22, 2025	Direct	F1

Showing 1 to 1 of 1 entries

* 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 on February 21, 2025.