Diodes (DIOD) CFO Sells 2,000 Shares at $55.895 — Form 4

Insider transaction summary: Diodes Inc. CFO Brett R. Whitmire reported sales on 08/27/2025.

Rhea-AI Filing Summary

Insider transaction summary: Diodes Inc. CFO Brett R. Whitmire reported sales on 08/27/2025. He sold 2,000 shares of Diodes common stock at $55.895 per share and disposed of 23,100 performance stock units. After the reported transactions he beneficially owns 48,777 shares directly. The filing is a routine Form 4 disclosure of changes in beneficial ownership by an officer.

Positive

• Reporting compliance: Form 4 filed and manually signed, meeting disclosure requirements
• Continued ownership: Reporting person still beneficially owns 48,777 common shares

Negative

• Officer disposition: Sale of 2,000 shares at $55.895 reduces insider equity stake
• Performance unit disposal: Disposal of 23,100 performance stock units reduces potential future equity

Insights

Financial Analyst

TL;DR: CFO sold a small portion of holdings; remaining direct ownership remains material.

Brett R. Whitmire, identified as CFO and reporting person, sold 2,000 common shares at $55.895 and disposed of 23,100 performance stock units on 08/27/2025. Post-transaction direct beneficial ownership is reported as 48,777 shares. The transaction is disclosed on a standard Form 4 and contains no additional contextual information such as purpose, 10b5-1 plan notation, or derivative exercises. From a financial-analytics perspective, the filing documents personal liquidity events but does not by itself indicate a change in company fundamentals.

Corporate Governance Expert

TL;DR: Officer-level sale disclosed; governance transparency satisfied by timely Form 4 filing.

The Form 4 records an officer-level disposition of both common stock (2,000 shares at $55.895) and performance stock units (23,100 units). The filing is signed by the reporting person and indicates a single filer. The document does not state that the transactions were made under a Rule 10b5-1 plan or provide explanatory remarks. As a governance matter, the filing meets Section 16 disclosure requirements but lacks supplementary detail on transaction rationale, leaving only the raw ownership impact for stakeholders to evaluate.

Insider Trade Summary

Net Seller: 2,000 shares

Net Sell 2 txns

Insider Whitmire Brett R

Role CFO

Sold 2,000 shs ($112K)

Type	Security	Shares	Price	Value
Sale	Diodes Incorporated Common Stock	2,000	$55.895	$112K
holding	Diodes Incorporated Common Stock - Performance Stock Units	--	--	--

Holdings After Transaction: Diodes Incorporated Common Stock — 48,777 shares (Direct); Diodes Incorporated Common Stock - Performance Stock Units — 23,100 shares (Direct)

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Diodes (DIOD) CFO Brett Whitmire report on the Form 4?

The Form 4 reports the sale of 2,000 common shares at $55.895 per share and the disposal of 23,100 performance stock units, with 48,777 shares owned after the transactions.

When were the transactions by Brett R. Whitmire executed?

The transactions are dated 08/27/2025 on the Form 4 and the form is signed on 08/28/2025.

Does the filing indicate the sale was under a 10b5-1 plan?

The Form 4 does not state that the transactions were made pursuant to a Rule 10b5-1 trading plan; no such notation appears in the disclosed fields.

How many shares does the reporting person own after the transactions?

After the reported transactions the filing shows 48,777 shares beneficially owned directly.

Was any price reported for the performance stock units disposed?

The Form 4 lists the disposal of 23,100 performance stock units but does not report a per-unit price for those units in the disclosed fields.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 08/28/2025 - 05:00 PM Learn about SEC filing dates

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^*

Whitmire Brett R

(Last) (First) (Middle)

4949 HEDGCOXE ROAD

SUITE 200

(Street)

PLANO TX 75024

(City) (State) (Zip)

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)
	CFO

3. Date of Earliest Transaction (Month/Day/Year)
08/27/2025

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

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

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

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	08/27/2025		S		2,000	D	$55.895	48,777	D
Diodes Incorporated Common Stock - Performance Stock Units								23,100	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	08/28/2025
	** 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.