CytoDyn Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Equity Awards and Warrants - Warrants (Details)

Equity Awards and Warrants - Warrants (Details)						3 Months Ended						9 Months Ended
Equity Awards and Warrants - Warrants (Details)	Mar. 25, 2022 shares	Feb. 28, 2022 $ / shares shares	Feb. 16, 2022 $ / shares shares	Feb. 14, 2022 $ / shares shares	Jan. 24, 2022 item	Feb. 28, 2022 USD ($) $ / shares shares	Nov. 30, 2021 USD ($) $ / shares	Aug. 31, 2021 USD ($) $ / shares	Feb. 28, 2021 USD ($)	Nov. 30, 2020 USD ($) $ / shares	Aug. 31, 2020 USD ($)	Feb. 28, 2022 USD ($) $ / shares shares	Feb. 28, 2021 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant exercises, value \| $							$ 533,000	$ 503,000	$ 3,439,000	$ 1,739,000	$ 12,690,000
Finance charges related to warrant issuance for surety bond backstop agreement \| $						$ 6,585,000
Proceeds from warrant exercises \| $												$ 1,036,000	$ 18,647,000
Proceeds from warrant transactions, net of offering costs \| $												$ 5,390,000	$ 15,371,000
Warrant covering common stock shares purchased, percentage												12.00%
Former Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued during the period new issues shares	908,418
Period for payment of severance compensation					60 days
Compensation policy period					12 months
Number of monthly installments \| item					6
Severance compensation, payment period from date of termination of employment					180 days
Private Equity Offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant exercises, shares												23,500,000
Stock based compensation \| $						$ 14,000
Common stock warrants to purchase shares		7,300,000				7,300,000						7,300,000
Term of warrants		5 years				5 years						5 years
Proceeds from warrant exercises \| $												$ 22,400,000
Stock price, in dollars per share \| $ / shares								$ 1.00		$ 1.50
Number of common shares in a fixed combination issue of shares		1				1						1
Number Of Warrants In Fixed Combination Issue Of Securities		0.25				0.25						0.25
Stock issued via offering, tender or placement, value \| $						$ 3,552,000	27,307,000	$ 2,872,000		$ 1,000,000
Private Equity Offering \| Consultant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share \| $ / shares			$ 1.04
Shares issued during the period new issues shares			15,000
Common stock warrants to purchase shares			25,000
Private Equity Offering \| Placement Agent
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share \| $ / shares		$ 0.40				$ 0.40						$ 0.40
Warrant exercises, shares												11,400,000
Shares issued during the period new issues shares												34,900,000
Common stock warrants to purchase shares		1,600,000				1,600,000						1,600,000
Term of warrants		7 years				7 years						7 years
Non-cash inducement interest expense \| $												$ 1,700,000
Cash inducement interest expense \| $												$ 200,000
Accredited Investors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant exercises, shares		1,200,000
Shares issued during the period new issues shares		2,800,000				6,300,000
Common stock warrants to purchase shares		600,000				600,000						600,000
Non-cash inducement interest expense \| $						$ 1,000,000.0
Private Warrant Exchange [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued during the period new issues shares						7,900,000
Non-cash inducement interest expense \| $												$ 5,200,000
Stock issued via offering, tender or placement, value \| $							$ 4,615,000	$ 775,000	$ 3,467,000	$ 4,596,000	$ 7,804,000	$ 5,400,000
Private Warrant Exchange, Non-Inducement Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued during the period new issues shares												3,500,000
Allotment to placement agent
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share \| $ / shares		$ 1.00				$ 1.00						$ 1.00
Term of warrants		10 years				10 years						10 years
Warrant covering common stock shares purchased, percentage												12.00%
Placement agent fees and expenses \| $												$ 50,000
Stock Subscription Agreements [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share \| $ / shares		$ 1.00				$ 1.00						$ 1.00
Shares issued during the period new issues shares												11,400,000
Common stock warrants to purchase shares		5,000,000.0				5,000,000.0						5,000,000.0
Term of warrants		5 years				5 years						5 years
Number of common shares in a fixed combination issue of shares		1				1						1
Number Of Warrants In Fixed Combination Issue Of Securities		0.3				0.3						0.3
Proceeds from Issuance of Common Stock \| $												$ 11,400,000
Stock issued via offering, tender or placement, value \| $												10,000,000.0
Surety Bond Backstop Agreement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share \| $ / shares				$ 0.30
Stock based compensation \| $						$ 6,600,000						$ 6,600,000
Common stock warrants to purchase shares		15,000,000				15,000,000						15,000,000
Term of warrants				5 years
Interest rate				10.00%
Period of Indemnification, Payment by Indemnitors				90 days
Indemnification Fee Payment Ratio				1.50%
Initial Warrant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock warrants to purchase shares				15,000,000.0
Make-Whole Warrant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock warrants to purchase shares				15,000,000.0
Term of warrants				5 years
Threshold period for exercise of second warrants				2 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share \| $ / shares		$ 1.00				$ 1.00						$ 1.00
Maximum \| Private Equity Offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share \| $ / shares		1.80				1.80						1.80
Stock price, in dollars per share \| $ / shares		1.00				1.00	$ 1.80					1.00
Maximum \| Accredited Investors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share \| $ / shares		1.00				1.00						1.00
Maximum \| Private Warrant Exchange [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share \| $ / shares		1.00				1.00						1.00
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share \| $ / shares		0.45				0.45						0.45
Minimum \| Private Equity Offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share \| $ / shares		0.40				0.40						0.40
Stock price, in dollars per share \| $ / shares		0.40				0.40	$ 1.00					0.40
Minimum \| Accredited Investors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share \| $ / shares		0.40				0.40						0.40
Minimum \| Private Warrant Exchange [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants, per share \| $ / shares		$ 0.40				$ 0.40						$ 0.40