Gary L. Fischer - 26 Feb 2026 Form 4 Insider Report for AXT INC (AXTI)

Role: CFO
Signature: /s/ Jeff Sensiba, Attorney-in-Fact
Issuer symbol: AXTI
Transactions as of: 26 Feb 2026
Net transactions value: +$1,270,249
Form type: 4
Filing time: 02 Mar 2026, 19:21:59 UTC
Previous filing: 20 Feb 2026
Next filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
FISCHER GARY L	CFO	4281 TECHNOLOGY DR., FREMONT	/s/ Jeff Sensiba, Attorney-in-Fact	02 Mar 2026	0001257647

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AXTI	Common Stock	Options Exercise	$342,219	+65,685	+15%	$5.21	503,400	26 Feb 2026	Direct	F1
transaction	AXTI	Common Stock	Options Exercise	$324,928	+34,203	+6.8%	$9.50	537,603	26 Feb 2026	Direct	F2
transaction	AXTI	Common Stock	Options Exercise	$320,235	+55,500	+10%	$5.77	593,103	26 Feb 2026	Direct	F3
transaction	AXTI	Common Stock	Options Exercise	$282,866	+92,440	+16%	$3.06	685,543	26 Feb 2026	Direct	F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	AXTI	Stock Option (Right to Buy)	Options Exercise	$0	-65,685	-100%	$0.000000	0	26 Feb 2026	Common Stock	65,685	$5.21	Direct	F1
transaction	AXTI	Stock Option (Right to Buy)	Options Exercise	$0	-34,203	-100%	$0.000000	0	26 Feb 2026	Common Stock	34,203	$9.50	Direct	F2
transaction	AXTI	Stock Option (Right to Buy)	Options Exercise	$0	-55,500	-100%	$0.000000	0	26 Feb 2026	Common Stock	55,500	$5.77	Direct	F3
transaction	AXTI	Stock Option (Right to Buy)	Options Exercise	$0	-92,440	-100%	$0.000000	0	26 Feb 2026	Common Stock	92,440	$3.06	Direct	F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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.
F2	Represents the exercise of options which were originally granted on 10/27/2017 and became first exercisable on 10/27/2018. All of the shares subject to this option are fully vested.
F3	Represents the exercise of options which were originally granted on 11/5/2018 and became first exercisable on 11/5/2019. All of the shares subject to this option are fully vested.
F4	Represents the exercise of options which were originally granted on 11/6/2019 and became first exercisable on 11/6/2020. All of the shares subject to this option are fully vested.