AXT director sells 8,333 shares in open-market trade

AXT Inc. director David C. Chang reported an open-market sale of 8,333 shares of Common Stock on June 15, 2026 at an average price of $111.1715 per share.

Rhea-AI Filing Summary

AXT Inc. director David C. Chang reported an open-market sale of 8,333 shares of Common Stock on June 15, 2026 at an average price of $111.1715 per share. After this transaction, he directly holds 65,165 shares, indicating he retains a substantial equity position in the company.

Insights

Equity ownership analyst

Director executes moderate open-market sale but keeps sizable stake.

Director David C. Chang completed an open-market sale of 8,333 shares of AXT Inc. Common Stock at an average price of $111.1715 per share. The transaction is classified as a non-derivative sale, meaning it directly involved common shares rather than options or other securities.

Following the sale, Chang continues to own 65,165 shares directly. Relative to his post-transaction holdings, the sale represents a moderate portion of his stake while leaving a meaningful remaining position. With no derivative positions listed, this filing reflects a straightforward reduction in common share ownership.

Because this is a single open-market sale without disclosed trading-plan details or related derivative activity, its broader significance depends on future ownership changes that may appear in subsequent company filings.

Insider Trade Summary

Net Seller: 8,333 shares

Net Sell 1 txn

Insider CHANG DAVID C

Role Director

Sold 8,333 shs ($926K)

Type	Security	Shares	Price	Value
Sale	Common Stock	8,333	$111.1715	$926K

Holdings After Transaction: Common Stock — 65,165 shares (Direct)

Key Figures

Shares sold: 8,333 shares Sale price per share: $111.1715 per share Shares owned after sale: 65,165 shares +1 more

4 metrics

Shares sold 8,333 shares Open-market sale of Common Stock on June 15, 2026

Sale price per share $111.1715 per share Average price for the 8,333 shares sold

Shares owned after sale 65,165 shares Direct holdings following the reported transaction

Net shares sold 8,333 shares Net-sell direction in transaction summary

Key Terms

open-market sale, Common Stock, non-derivative, transaction code "S", +1 more

5 terms

open-market sale financial

"reported an open-market sale of 8,333 shares of Common Stock"

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.

Common Stock financial

"open-market sale of 8,333 shares of Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

non-derivative financial

"The transaction is classified as a non-derivative sale"

transaction code "S" regulatory

"using transaction code “S,” which denotes a sale in the open market"

insider ownership financial

"show that he continues to hold a substantial equity position"

The percentage of a company’s stock held by people with access to inside information or control, typically officers, directors and large shareholders who work at or help run the business. It matters to investors because it shows how much “skin in the game” insiders have and can signal alignment of interests, potential for concentrated control, and effects on share liquidity—like neighbors owning most of a street, which changes how decisions are made and how easy it is for others to move in or out.

FAQ

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

How many AXT Inc. (AXTI) shares did David C. Chang sell in this Form 4?

Director David C. Chang sold 8,333 shares of AXT Inc. Common Stock. The transaction was reported as an open-market sale of non-derivative common shares, reflecting a direct reduction in his equity holdings rather than an exercise or conversion of options.

At what price were the AXTI shares sold in David C. Chang’s reported transaction?

The 8,333 AXT Inc. shares were sold at an average price of $111.1715 per share. This per-share figure comes directly from the Form 4 disclosure and is used to characterize the open-market sale reported for the director.

How many AXT Inc. (AXTI) shares does David C. Chang own after this Form 4 sale?

After the reported transaction, David C. Chang directly owns 65,165 shares of AXT Inc. Common Stock. This remaining balance, disclosed in the Form 4, shows that he continues to hold a substantial equity position in the company following the sale.

Is the David C. Chang AXTI transaction a buy or sell according to the Form 4?

The Form 4 classifies David C. Chang’s transaction as a sell. It is labeled as an open-market sale of common stock, using transaction code “S,” which denotes a sale in the open market or a private transaction under SEC reporting rules.

Does the AXT Inc. (AXTI) Form 4 show any derivative exercises or options for David C. Chang?

The Form 4 does not list any derivative exercises or option conversions for David C. Chang. All reported activity involves non-derivative Common Stock, and the derivative positions section in the filing is empty for this transaction date.

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

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Accepted by SEC EDGAR 06/17/2026 - 11:52 AM EDT 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^*

CHANG DAVID C

(Last) (First) (Middle)

4281 TECHNOLOGY DR.

(Street)

FREMONT CALIFORNIA 94538

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
AXT INC [ AXTI ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/15/2026

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
Common Stock	06/15/2026		S		8,333	D	$111.1715	65,165	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:

	/s/ Jeff Sensiba, Attorney-in-Fact	06/17/2026
	** 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)