Diodes (DIOD) CTO sells 9,137 shares in open-market stock trades

Rhea-AI Filing Summary

Diodes Incorporated Chief Technology Officer Francis Tang sold a total of 9,137 shares of Diodes Incorporated Common Stock in open-market transactions. He sold 4,137 shares at $108.00 per share on May 26, 2026 and 5,000 shares at $110.08 per share on May 27, 2026, leaving him with 86,768 directly owned shares.

Insider Trade Summary

Net Seller: 9,137 shares ($997,196)

Net Sell 2 txns

Insider Tang Francis

Role Chief Technology Officer

Sold 9,137 shs ($997K)

Type	Security	Shares	Price	Value
Sale	Diodes Incorporated Common Stock	5,000	$110.08	$550K
Sale	Diodes Incorporated Common Stock	4,137	$108.00	$447K

Holdings After Transaction: Diodes Incorporated Common Stock — 86,768 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold May 27, 2026: 5,000 shares at $110.08 Shares sold May 26, 2026: 4,137 shares at $108.00 Total shares sold: 9,137 shares +1 more

4 metrics

Shares sold May 27, 2026 5,000 shares at $110.08 Open-market sale of Diodes Incorporated Common Stock

Shares sold May 26, 2026 4,137 shares at $108.00 Open-market sale of Diodes Incorporated Common Stock

Total shares sold 9,137 shares Net open-market sales across both transactions

Shares held after trades 86,768 shares Direct ownership following reported sales

Key Terms

open-market sale, non-derivative, Chief Technology Officer

3 terms

open-market sale financial

"transaction_action: "open-market sale" for both transactions"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

non-derivative financial

"transaction_type: "non-derivative" for the common stock sales"

Chief Technology Officer other

"officer_title: "Chief Technology Officer" for Francis Tang"

The chief technology officer is the senior executive who sets a company's technology vision and oversees development, engineering, and technical operations—think of them as the lead architect and head mechanic who decides what tools the business builds and how they run. Their choices affect product direction, cost structure, cybersecurity and scalability, so investors watch the CTO to gauge a company’s ability to innovate, compete and manage technical risk.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

Tang Francis

(Last) (First) (Middle)

4949 HEDGCOXE ROAD

SUITE 200

(Street)

PLANO TEXAS 75024

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
DIODES INC /DEL/ [ DIOD ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Technology Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/26/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Diodes Incorporated Common Stock	05/26/2026		S		4,137	D	$108	91,768	D
Diodes Incorporated Common Stock	05/27/2026		S		5,000	D	$110.08	86,768	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	Brett R. Whitmire as Power of Attorney for Francis Tang	05/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Diodes (DIOD) report for Francis Tang?

Francis Tang reported selling 9,137 Diodes shares in open-market trades. The Chief Technology Officer disposed of 4,137 shares at $108.00 and 5,000 shares at $110.08, according to a Form 4 insider filing.

On what dates did Diodes (DIOD) CTO Francis Tang sell shares?

Francis Tang sold Diodes shares on May 26 and May 27, 2026. He completed two open-market sale transactions, one on May 26, 2026 and another on May 27, 2026, as disclosed in the Form 4 filing.

How many Diodes (DIOD) shares does Francis Tang hold after the reported sales?

After the transactions, Francis Tang directly holds 86,768 Diodes shares. The Form 4 shows this post-transaction balance following his combined open-market sales of 9,137 Diodes Incorporated Common Stock shares.

What were the sale prices in the Diodes (DIOD) insider Form 4?

Shares were sold at $108.00 and $110.08 per share. The Form 4 reports a 4,137-share sale at $108.00 on May 26, 2026, and a 5,000-share sale at $110.08 on May 27, 2026.

What type of transactions did Diodes (DIOD) CTO Francis Tang execute?

Francis Tang executed open-market sales of common stock. The Form 4 classifies both transactions as non-derivative open-market sales of Diodes Incorporated Common Stock, using transaction code “S” for sale in open market or private transaction.