CytoDyn Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Equity Awards and Warrants - Warrants (Details)

Equity Awards and Warrants - Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands																							1 Months Ended		6 Months Ended	12 Months Ended
	Apr. 02, 2021	Mar. 18, 2021	Jan. 28, 2021	Dec. 08, 2020	Dec. 06, 2020	Dec. 04, 2020	Nov. 30, 2020	Nov. 17, 2020	Oct. 26, 2020	Oct. 14, 2020	Jun. 17, 2020	Mar. 13, 2020	Mar. 04, 2020	Feb. 28, 2020	Jan. 31, 2020	Dec. 30, 2019	Dec. 23, 2019	Dec. 20, 2019	Dec. 13, 2019	Dec. 09, 2019	Aug. 29, 2019	Jul. 31, 2019	Jan. 31, 2020	Nov. 08, 2019	Nov. 30, 2019	May 31, 2021	May 31, 2020	May 31, 2019	Aug. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants to purchase common shares, shares												300,000																	2,600,000
Term of warrants												5 years																	5 years
Exercise price of warrants, per share												$ 1.00																	$ 0.50
Warrant exercises, value																										$ 19,428	$ 20,500
Exercise of warrants for cash																										$ 19,400
Warrant exercises, shares																										27,300,000
Cashless exercise of warrants, shares																										10,600,000
Cashless exercise of warrants, warrants																										11,700,000
Stock issued via offering, tender or placement, value																											$ 13,409	$ 3,084
Common Stock, Par or Stated Value Per Share						$ 0.001				$ 0.001												$ 0.001				$ 0.001	$ 0.001
Series C Convertible Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued via offering, tender or placement, shares					415																1,754			2,788
Stock issued via offering, tender or placement, value																					$ 1,500
Series D Convertible Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued via offering, tender or placement, shares												882			7,570
Stock issued via offering, tender or placement, value												$ 900			$ 7,600
Consultant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants to purchase common shares, shares																										100,000
Term of warrants																										5 years
Exercise price of warrants, per share																										$ 3.07
Warrants grant date fair value																										$ 2.11
Registered Direct Offering [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants to purchase common shares, shares																	7,400,000		1,800,000	1,900,000					12,000,000.0
Term of warrants																			5 years	5 years					5 years
Exercise price of warrants, per share																			$ 0.45	$ 0.45					$ 0.45
Stock issued via offering, tender or placement, shares																	14,800,000		2,400,000	2,600,000					19,100,000
Stock issued via offering, tender or placement, value																											$ 12,666	$ 11,815
Allotment to placement agent
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants to purchase common shares, shares																									700,000			4,400,000
Term of warrants																									5 years
Private Placement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants to purchase common shares, shares																												23,500,000
Term of warrants																												5 years
Exercise price of warrants, per share																												$ 0.75
Stock issued via offering, tender or placement, shares								670,000																				47,000,000.0
Stock issued via offering, tender or placement, value																										$ 1,000		$ 23,488
Private Warrant Exchange [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants to purchase common shares, shares																										37,100,000
Exercise price of warrants, per share	$ 0.45			$ 0.30		$ 0.45	$ 0.75						$ 0.75		$ 0.50	$ 0.50							$ 0.50
Stock issued via offering, tender or placement, shares	1,100,000	200,000	3,600,000	2,000,000.0		300,000	500,000		5,000,000.0	7,000,000.0	16,500,000		88,000	8,600,000		2,700,000		4,700,000				11,300,000	4,400,000
Stock issued via offering, tender or placement, value																										$ 17,556	$ 6,021	$ 2,966
Warrants exchanged (in shares)			2,500,000	1,900,000		300,000	500,000		4,500,000	6,400,000	16,500,000															34,100,000
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share																										$ 1.35
Cashless exercise of warrants, exercise price																										1.35
Maximum \| Allotment to placement agent
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share																									$ 0.44
Maximum \| Private Warrant Exchange [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share		$ 0.45	$ 1.50						$ 0.75	$ 1.00	$ 1.35			$ 0.75				$ 0.75
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share																										0.30
Cashless exercise of warrants, exercise price																										$ 0.40
Minimum \| Allotment to placement agent
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share																									$ 0.40
Minimum \| Private Warrant Exchange [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share		$ 0.30	$ 0.90						$ 0.30	$ 0.30	$ 0.35			$ 0.30				$ 0.45