a.

Balance sheets:

​

  ​ ​ ​

June 30, 

  ​ ​ ​

December 31, 

(U.S. dollars in thousands)

​

2026

​

2025

Accounts payable and accruals – other:

​

​

​

​

​

​

Payroll and related expenses

​

$

1,918

​

$

1,629

Provision for vacation

​

​

2,950

​

​

2,309

Accrued expenses

​

​

9,959

​

​

9,790

Royalties payable

​

​

1,557

​

​

799

Income tax payable

​

​

4,215

​

​

2,950

Payable to customer

​

​

2,207

​

​

2,029

Property and equipment suppliers

​

413

​

​

369

​

​

$

23,219

​

$

19,875

b.

Statements of Operations:

(U.S. dollars in thousands)

​

Six Months Ended June 30, 

  ​ ​ ​

Three Months Ended June 30, 

Research and development expenses:

  ​ ​ ​

2026

  ​ ​ ​

2025

2026

  ​ ​ ​

2025

Employee salaries and related expenses

​

$

5,823

​

$

3,940

​

$

3,061

​

$

2,046

Subcontractor-related expenses

​

​

3,575

​

​

3,812

​

​

2,140

​

​

3,007

Materials-related expenses

​

​

733

​

​

426

​

​

316

​

​

210

Depreciation

​

​

264

​

​

231

​

​

132

​

​

117

Other expenses

​

​

1,482

​

​

1,058

​

​

802

​

​

612

Less - R&D grant

​

​

(2,100)

​

​

—

​

​

(2,100)

​

​

—

​

​

$

9,777

​

$

9,467

​

$

4,351

​

$

5,992