v3.26.1
Share capital, stock options and other stock-based plans (Tables)
 3 Months Ended
Mar. 31, 2026
Share-Based Payment Arrangement [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity
A continuity of the Units issued under the Westport Omnibus Plan are as follows:
 Three months ended March 31, 2026Three months ended March 31, 2025
 Number of
Units		Weighted
average
grant
date fair
value
(CDN $)		Number of
Units		Weighted
average
grant
date fair
value
(CDN $)
Outstanding, beginning of period713,061 $11.75 524,322 $11.75 
Granted— — — — 
Exercised(20,521)17.80 (43,798)19.76 
Forfeited/expired(134,706)8.55 (73,069)12.77 
Outstanding, end of period557,834 $5.20 407,455 $10.67 
Units outstanding and exercisable, end of period491 $31.07 1,189 $26.82 
Schedule of Share Based Compensation Arrangement by Share Based Payment Award Intrinsic Value
The aggregate intrinsic value of the Company’s share units at March 31, 2026 as follows:
 March 31, 2026
(CDN $)
Share units:
Outstanding$1,388 
Exercisable15 
Exercised51 
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Stock-based compensation associated with the Unit plans is included in operating expenses as follows:
Three Months Ended March 31,
 20262025
Research and development8 13 
General and administrative160 247 
Sales and marketing— 25 
 $168 $285 

Three Months Ended March 31,
 20262025
Stock-based compensation - equity or cash settled86 212 
Stock-based compensation - cash settled only82 73 
 $168 $285