Medline Inc.

S-11 d68812ds1.htm S-1

As filed with the Securities and Exchange Commission on May 20, 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

(Exact Name of Registrant as Specified in its Charter)

3 Lakes Drive

Northfield, Illinois 60093

**Telephone: (847)949-5500 **

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

James Boyle

Chief Executive Officer

3 Lakes Drive

Northfield, Illinois 60093

**Telephone: (847)949-5500 **

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

Copies to:

Approximate date of commencement of the proposed sale of the securities to the public: As soon as practicable after the Registration Statement is declared effective.

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, 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 post-effective amendment filed pursuant to Rule 462(d) 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. ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, anon-accelerated filer, 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 the 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, as amended, or until the Registration Statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

The information in this preliminary prospectus is not complete and may be changed. The selling stockholders may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This preliminary prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED MAY 20, 2026

PRELIMINARY PROSPECTUS

60,000,000 Shares

Class A Common Stock

The selling stockholders named in this prospectus are offering 60,000,000 shares of our Class A common stock. Our shares of Class A common stock are listed on the Nasdaq Global Select Market (“Nasdaq”) under the trading symbol “MDLN.”

On May 19, 2026, the closing sales price of our shares of Class A common stock as reported on Nasdaq was $37.70 per share. We will not receive any proceeds from the sale of shares of our Class A common stock by the selling stockholders. Prior to the consummation of this offering, certain of the selling stockholders will exchange Common Units (as defined herein) for shares of our Class A common stock to be sold by them in the offering. See “Principal and Selling Stockholders” and “Organizational Structure.”

Investing in shares of our Class A common stock involves risks. See “Risk Factors” beginning on page 29 to read about factors you should consider before buying shares of the Class A common stock.

Neither the Securities and Exchange Commission nor any other regulatory body has approved or disapproved of these securities or passed upon the accuracy or adequacy of this prospectus. Any representation to the contrary is a criminal offense.

To the extent that the underwriters sell more than 60,000,000 shares of our Class A common stock, the underwriters have the option to purchase up to an additional 9,000,000 shares of our Class A common stock from the selling stockholders at the public offering price less the underwriting discounts and commissions within 30 days from the date of this prospectus.

The underwriters expect to deliver the shares of our Class A common stock against payment in New York, New York on or about , 2026.

The date of this prospectus is , 2026.