AXT Inc (AXTI) CEO exercises options and sells 197,498 shares

Rhea-AI Filing Summary

AXT Inc CEO Morris S. Young reported a mix of stock option exercises and share sales in early June 2026. On June 1 and June 2, he exercised options for a total of 85,703 shares of common stock at an exercise price of $5.21 per share, from grants originally made on October 28, 2016 that are now fully vested.

In connection with these exercises, Young sold a total of 197,498 shares of AXT common stock in open‑market transactions, including cashless exercise/same‑day sale transactions. Weighted average sale prices were $112.3907 and $113.3291 per share, with actual trade prices ranging from $107.70 to $121.48 per share. Following these transactions, he directly holds 2,149,533 shares of AXT common stock, and the options exercised in these trades are fully used.

Insider Trade Summary

Net Seller: 197,498 shares ($22,312,926)

Net Sell 6 txns

Insider YOUNG MORRIS S

Role CEO

Sold 197,498 shs ($22.31M)

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy)	11,806	$0.00	--
Exercise	Common Stock	11,806	$5.21	$62K
Sale	Common Stock	123,601	$113.3291	$14.01M
Exercise	Stock Option (Right to Buy)	73,897	$0.00	--
Exercise	Common Stock	73,897	$5.21	$385K
Sale	Common Stock	73,897	$112.3907	$8.31M

Holdings After Transaction: Stock Option (Right to Buy) — 467,046 shares (Direct, null); Common Stock — 2,273,134 shares (Direct, null)

Footnotes (1)

1. Represents the exercise of options which were originally granted on 10/28/2016 and became first exercisable on 10/28/2017. All of the shares subject to this option are fully vested. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions pursuant to the cashless exercise/same-say sale of the options reported in footnote 1 at prices ranging from $110.00 to $115.64,inclusive. Upon request by the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate transaction. Represents the exercise of options which were originally granted on 10/28/2016 and became first exercisable on 10/28/2017. All of the shares subject to this option are fully vested. Of the total shares sold, 11,806 shares were sold pursuant to the cashless exercise/same-say sale of the options reported in footnote 3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.70 to $121.48,inclusive. Upon request by the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate transaction.

Key Figures

Shares sold: 197,498 shares Options exercised: 85,703 shares Exercise price: $5.21 per share +4 more

7 metrics

Shares sold 197,498 shares Total common shares sold in open-market and cashless transactions on June 1–2, 2026

Options exercised 85,703 shares Common shares acquired via option exercises at $5.21 per share

Exercise price $5.21 per share Stock option exercise price for grants originally dated October 28, 2016

Weighted average sale price (June 1) $112.3907 per share Common stock sold June 1, 2026, with trades from $107.70 to $121.48

Weighted average sale price (June 2) $113.3291 per share Common stock sold June 2, 2026, with trades from $110.00 to $115.64

Post-transaction holdings 2,149,533 shares Directly held AXT common shares after June 2, 2026 transactions

Remaining options from this grant 0 options All shares subject to the reported options are fully exercised and vested

Key Terms

cashless exercise/same-say sale, weighted average price, Stock Option (Right to Buy), derivative security, +1 more

5 terms

cashless exercise/same-say sale financial

"shares were sold in multiple transactions pursuant to the cashless exercise/same-say sale of the options"

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Stock Option (Right to Buy) financial

"security_title": "Stock Option (Right to Buy)""

derivative security financial

"transaction_code_description": "Exercise or conversion of derivative security""

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

fully vested financial

"All of the shares subject to this option are fully vested."

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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^*

YOUNG MORRIS S

(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
X	Officer (give title below)		Other (specify below)
	CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

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	06/01/2026		M		73,897(1)	A	$5.21	2,335,225	D
Common Stock	06/01/2026		S		73,897	D	$112.3907(2)	2,261,328	D
Common Stock	06/02/2026		M		11,806(3)	A	$5.21	2,273,134	D
Common Stock	06/02/2026		S		123,601(4)	D	$113.3291(5)	2,149,533	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
Stock Option (Right to Buy)	$5.21	06/01/2026		M			73,897(1)	10/28/2017	10/28/2026	Common Stock	73,897	$0	478,852	D
Stock Option (Right to Buy)	$5.21	06/02/2026		M			11,806(3)	10/28/2017	10/28/2026	Common Stock	11,806	$0	467,046	D

Explanation of Responses:

1. Represents the exercise of options which were originally granted on 10/28/2016 and became first exercisable on 10/28/2017. All of the shares subject to this option are fully vested.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions pursuant to the cashless exercise/same-say sale of the options reported in footnote 1 at prices ranging from $110.00 to $115.64,inclusive. Upon request by the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate transaction.

3. Represents the exercise of options which were originally granted on 10/28/2016 and became first exercisable on 10/28/2017. All of the shares subject to this option are fully vested.

4. Of the total shares sold, 11,806 shares were sold pursuant to the cashless exercise/same-say sale of the options reported in footnote 3.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.70 to $121.48,inclusive. Upon request by the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate transaction.

	/s/ Jeff Sensiba, Attorney-in-Fact	06/03/2026
	** 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 transactions did AXT (AXTI) CEO Morris S. Young report?

AXT CEO Morris S. Young reported exercising stock options for 85,703 shares and selling 197,498 shares of common stock in open‑market and cashless exercise/same‑day sale transactions across June 1–2, 2026, while retaining over two million shares afterward.

How many AXT (AXTI) shares did the CEO sell, and at what prices?

Morris S. Young sold 197,498 AXT common shares at weighted average prices of $112.3907 and $113.3291 per share. Individual trades occurred within price ranges from $107.70 to $121.48 per share over June 1–2, 2026, according to the filing footnotes.

What stock options did the AXT (AXTI) CEO exercise in this Form 4?

The CEO exercised options originally granted on October 28, 2016, which became exercisable on October 28, 2017. He converted options into 85,703 common shares at an exercise price of $5.21 per share, and all shares subject to these options were fully vested at the time.

What does cashless exercise/same‑day sale mean in the AXT (AXTI) CEO filing?

Cashless exercise/same‑day sale means the CEO used the value of immediately sold shares to cover the option exercise cost, instead of paying cash. In this filing, 11,806 of the sold shares came from such a cashless exercise linked to the reported option grants.

How many AXT (AXTI) shares does the CEO hold after these transactions?

After completing the reported exercises and sales, CEO Morris S. Young directly holds 2,149,533 shares of AXT common stock. This post‑transaction holding figure comes from the Form 4 totals reported following the June 2, 2026 open‑market sale transaction.

Were the AXT (AXTI) CEO’s share sales made at a single price or multiple prices?

The share sales were executed at multiple prices, with the Form 4 reporting weighted average prices. Footnotes state that June 1 trades ranged from $107.70 to $121.48 and June 2 trades ranged from $110.00 to $115.64 per share, all aggregated into weighted averages.