Semilux appoints Randy Chang to board roles

Semilux International Ltd. reported a board change at its subsidiary FST Corp. Independent director Ms. Shu-Chuan Chien resigned from the Board on April 15, 2026, without indicating any disagreement about operations, policies, or practices.

Rhea-AI Filing Summary

Semilux International Ltd. reported a board change at its subsidiary FST Corp. Independent director Ms. Shu-Chuan Chien resigned from the Board on April 15, 2026, without indicating any disagreement about operations, policies, or practices.

On the same day, the Board appointed Mr. Randy ChiaHaur Chang as an independent director to fill the vacancy. Mr. Chang, who has prior executive experience in technology and energy companies and is founder of renewable energy and sustainable farming businesses, also joined the Audit, Compensation, and Nominations Committees. The Company entered into its standard indemnity agreement with him, stated there are no related party transactions requiring disclosure, and noted that any compensation arrangements will be disclosed in a later filing.

Key Terms

independent director, Audit Committee, Compensation Committee, Nominations Committee, +2 more

6 terms

independent director financial

"Ms. Chien, an independent director on the Board of Directors of FST Corp."

An independent director is a member of a company's board of directors who is not involved in the company's day-to-day operations and has no significant relationships with the company that could influence their judgment. Their role is to provide unbiased oversight and ensure the company is managed in the best interests of all shareholders. This helps build trust and confidence among investors by promoting transparency and accountability.

Audit Committee financial

"appointed Mr. Chang to serve as a member of the Company’s Audit Committee"

A company's audit committee is a small group of board members who act like independent inspectors for the firm's finances, overseeing how financial reports are prepared, monitoring internal controls, and managing the relationship with external auditors. Investors care because a strong audit committee reduces the risk of accounting errors, fraud, or misleading statements, making financial statements more trustworthy and helping protect shareholder value.

Compensation Committee financial

"appointed Mr. Chang to serve as a member of the Company’s Audit Committee, Compensation Committee, and Nominations Committee"

A compensation committee is a group within a company's leadership responsible for setting and reviewing how much top executives and employees are paid, including salaries, bonuses, and benefits. It matters to investors because fair and effective pay decisions can influence a company's performance, leadership motivation, and overall governance, helping ensure that the company’s management is aligned with shareholders’ interests.

Nominations Committee financial

"appointed Mr. Chang to serve as a member of the Company’s Audit Committee, Compensation Committee, and Nominations Committee"

indemnity agreement financial

"The Company also entered into an indemnity agreement with Mr. Chang in the same form"

related party transactions financial

"there are no related party transactions between Mr. Chang and the Company that would require disclosure"

Transactions between a company and people or entities that have close ties to it—such as executives, board members, major shareholders, family members, or related companies—where the parties are not independent. These deals matter to investors because they can create conflicts of interest or hide favorable terms that distort a company’s true profits and risks; think of it like a business buying or selling to a family member instead of using the open market, which can lead to biased prices or undisclosed obligations.

FAQ

What director change did Semilux International (SELX) disclose in this 6-K?

Semilux disclosed that independent director Ms. Shu-Chuan Chien resigned from the Board of FST Corp. effective April 15, 2026. The Board simultaneously appointed Mr. Randy ChiaHaur Chang as an independent director to fill the vacancy created by her resignation.

Who is Randy ChiaHaur Chang, the new independent director at Semilux (SELX) affiliate FST Corp.?

Randy Chang is founder and owner of 2Sun Energy LLC and WeSoar International Corp., which focus on renewable energy and sustainable bio-farming. He also co-invests in Saison (Hospitality) Group and previously held executive roles at multiple technology and energy firms including Neo Semiconductor and Motorola.

Which board committees will Randy Chang serve on for Semilux (SELX) affiliate FST Corp.?

Randy Chang was appointed to FST Corp.’s Audit Committee, Compensation Committee, and Nominations Committee on the same day he joined the Board. This means he will participate in oversight of financial reporting, executive pay, and director nomination processes within the company’s governance structure.

Did Semilux International (SELX) report any disagreement related to the director resignation?

The company stated that Ms. Shu-Chuan Chien did not advise of any disagreement with FST Corp. on matters relating to operations, policies, or practices. This language indicates a routine departure rather than a board conflict, based solely on the company’s disclosure.

Are there related party transactions between Randy Chang and Semilux International (SELX)?

The company confirmed there are no related party transactions between Randy Chang and the company requiring disclosure under Item 7.B of Form 20-F. This suggests his appointment as independent director does not involve disclosed business dealings with the company or its affiliates.

Will Randy Chang’s compensation at Semilux (SELX) be disclosed?

The company indicated that any compensation arrangements in connection with Randy Chang’s appointment will be disclosed, if applicable, in a subsequent filing. Investors would therefore need to review future company disclosures to see any detailed information on his director compensation package.

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

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Accepted by SEC EDGAR 04/23/2026 - 06:26 PM Learn about SEC filing dates

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of April 2026

Commission File Number: 001-41965

Semilux International Ltd.

(Registrant’s Name)

4F., No. 32, Keya Rd., Daya Dist.

Central Taiwan Science Park

Taichung City 42881

Taiwan

(Address of Principal Executive Offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F ☒         Form 40-F ☐

Appointment of Directors or Certain Officers.

On April 15, 2026, Ms. Chien, Shu-Chuan (“Ms. Chien”), an independent director on the Board of Directors of FST Corp. (the “Company”), notified the Company of her resignation from the Board of Directors, effective immediately. Ms. Chien did not advise the Company of any disagreement with the Company on any matter relating to its operations, policies, or practices.

On the same day, the Board of Directors of the Company appointed Mr. Randy ChiaHaur Chang (“Mr. Chang”) as a member of the Board of Directors, effective immediately. Mr. Chang fills the independent director vacancy created by the resignation of Ms. Chien on the Board of Directors of the Company.

Randy Chang is the founder and owner of 2Sun Energy LLC and WeSoar International Corp. These companies are focused in renewable energy solutions and sustainable bio-farming. He is also a co-investor in Saison (Hospitality) Group, and managed the operations of its winery business. Mr. Chang previously held executive roles in technology and energy companies including Neo Semiconductor, AUO Green Energy America, Neo Solar Power, Motorola, ITRI, VIS and TSMC. Mr. Chang received his master’s degree in Materials Science from National Cheng Kung University in Taiwan.

In addition, on the same day, the Board of Directors of the Company appointed Mr. Chang to serve as a member of the Company’s Audit Committee, Compensation Committee, and Nominations Committee respectively.

The Company also entered into an indemnity agreement with Mr. Chang in the same form as its standard form of indemnification agreement with its other directors.

The Company confirms that there are no related party transactions between Mr. Chang and the Company that would require disclosure under Item 7.B of Form 20-F. Any compensation arrangements in connection with him appointment will be disclosed, if applicable, in a subsequent filing.

The Company will update its internal records accordingly.

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Semilux International Ltd.
Date: April 23, 2026	By:	/s/ Yung-Peng Chang
	Name:	Yung-Peng Chang
	Title:	Chief Executive Officer

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