v3.26.1
10. STOCK-BASED COMPENSATION (Tables)
3 Months Ended
Jun. 30, 2026
STOCK-BASED COMPENSATION  
Summary of stock option activities

Weighted

Number of Shares

Average

Weighted

Weighted

Shares

Underlying

Remaining

Average

Average Grant

Available for

Options

Contractual

Exercise

Date Fair

  ​ ​ ​

Grant

  ​ ​ ​

Outstanding

  ​ ​ ​

Life (Years)

  ​ ​ ​

Price

  ​ ​ ​

Value Per Share

Balance, March 31, 2026

1,963,395

7,085,134

$

5.25

$

2.63

Granted

(87,310)

87,310

$

11.72

$

9.86

Exercised

(780,769)

$

5.80

$

2.15

Forfeited

7,850

(7,850)

$

5.28

$

5.07

Balance at June 30, 2026

1,883,935

6,383,825

5.93

$

5.27

$

2.79

Options vested and exercisable

4,290,619

4.66

$

5.40

$

2.26

Options vested and expected to vest

6,349,709

5.92

$

5.28

$

2.79

Options unvested

2,093,206

8.55

$

5.01

$

3.87

Summary of stock-based compensation expense by line item

Three Months Ended June 30, 

2026

2025

  ​ ​ ​

(In thousands)

Cost of revenues

$

70

$

44

Research and development

260

(62)

Selling, general and administrative

557

359

$

887

$

341