v3.26.1
Employee Benefit Plans (Tables)
3 Months Ended
Mar. 31, 2026
Employee Benefit Plans  
Schedule of components and classification of stock-based compensation expense

The components and classification of stock-based compensation expense, excluding the Company’s matching contributions to the Plug Power Inc. 401(k) Savings & Retirement Plan and quarterly Board compensation, were as follows (in thousands):

Three months ended March 31,

2026

  ​ ​ ​

2025

Cost of sales

$

1,219

$

1,087

Research and development

956

1,137

Selling, general and administrative

8,985

6,249

$

11,160

$

8,473