Quarterly report pursuant to Section 13 or 15(d)

Inventories (Tables)

v3.21.4
Inventories (Tables)
6 Months Ended
Nov. 30, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current

​

​

​

​

​

​

​

(in thousands)

    

November 30, 2021

    

May 31, 2021

Raw materials

​

$

22,536

​

$

28,085

Work-in-progress

​

 

66,021

​

 

65,394

Total

​

$

88,557

​

$

93,479

Schedule of remaining shelf life of inventory

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Expiration period ending November 30,

    

Remaining shelf-life

    

Raw materials

    

Work-in-progress bulk drug product

    

Work-in-progress finished drug product in vials

    

Total inventories

2022

​

0 to 12 months

​

$

21,014

​

$

-

​

$

-

​

$

21,014

2023

​

13 to 24 months

​

​

1,078

​

​

-

​

​

-

​

​

1,078

2024

​

25 to 36 months

​

​

1,902

​

​

-

​

​

29,143

​

​

31,045

2025

​

37 to 48 months

​

​

192

​

​

-

​

​

24,315

​

​

24,507

2026

​

49 to 60 months

​

​

695

​

​

-

​

​

-

​

​

695

Thereafter

​

61 or more months

​

​

157

​

​

12,563

​

​

-

​

​

12,720

Total inventories

​

​

​

​

25,038

​

​

12,563

​

​

53,458

​

​

91,059

Inventories reserved

​

​

​

​

(2,502)

​

​

-

​

​

-

​

​

(2,502)

Total inventories, net

​

​

​

$

22,536

​

$

12,563

​

$

53,458

​

$

88,557