CytoDyn Inc.

As filed with the Securities and Exchange Commission on April 22, 2026

Registration No. 333-

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM****S-1

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

CYTODYN INC.

(Exact name of registrant as specified in its charter)

1111 Main Street, Suite 660

Vancouver, Washington 98660

(360) 980-8524

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Tyler Blok

Chief Legal Officer

1111 Main Street, Suite 660

Vancouver, Washington 98660

Telephone: (360) 980-8524

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies of all communications, including communications sent to the agent for service, to:

​​​​​​​​

​Mary Ann FrantzMiller Nash LLP1140 SW Washington St, Suite 700Portland, Oregon 97205Tel: (503) 224-5858

Approximate date of commencement of proposed sale to the public: From time to time after this Registration Statement becomes effective.

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box:☐

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box:☒

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.☐

If this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box.☐

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box.☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer”, “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of Securities Act☐

The registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until this registration statement shall become effective on such date as the Commission acting pursuant to said Section 8(a), may determine.

The****information in this prospectus is not complete and may be changed. A registration statement relating to these securities has been filed with the Securities and Exchange Commission. These securities may not be sold until the registration statement is effective. This prospectus is not an offer to sell these securities and does not solicit an offer to buy these securities in any state or other jurisdiction where the offer or sale is not permitted.

Subject to completion, preliminary prospectus dated April 22, 2026.

Up to 278,076,375 Shares of Common Stock

This prospectus relates to the resale of up to 184,135,636 shares of our common stock, par value $0.001 per share (the “common stock”) and 93,940,739 shares of our common stock underlying certain warrants (collectively, the “Shares”) by the selling stockholders identified in this prospectus under “Selling Stockholders.” The selling stockholders may sell all or a portion of the Shares from time to time, in amounts, at prices and on terms determined at the time of sale. The Shares may be sold by any means described in the section of this prospectus entitled “Plan of Distribution” beginning on page 81.

We are not selling any shares of our common stock under this prospectus and will not receive any proceeds from the sale of these Shares by the selling stockholders. We will, however, receive proceeds from any warrants that are exercised through the payment of the exercise price in cash. We will bear all other costs, fees and expenses incurred in effecting the registration of the Shares covered by this prospectus. All selling and other expenses incurred by the selling stockholders will be borne by the selling stockholders.

We are registering the offer and sale of the Shares pursuant to certain registration rights granted to the selling stockholders. The registration of these Shares does not necessarily mean that any of the Shares will be offered or sold by the selling stockholders. The timing and amount of any sale is within the sole discretion of the selling stockholders.

Our common stock is quoted on the OTCQB of OTC Markets Group, Inc. under the symbol “CYDY.” On April 15, 2026, the closing price of our common stock was $0.34 per share.

Investing in our securities involves risk. You should carefully consider the risks that we have described under the section captioned “Risk Factors” in this prospectus on page 9 before buying our securities.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus is , 2026

TABLE OF CONTENTS

In making your investment decision, you should rely only on the information contained in this prospectus.

We have not authorized anyone to provide you with different or additional information. We are not making an offer to sell or seeking an offer to buy any shares of common stock in any jurisdiction where the offer or sale is not permitted.

You should not assume that the information contained in this prospectus is complete and accurate as of any date other than the date of this prospectus, regardless of the time of delivery of this prospectus or any sale of securities offered hereby.