Role
10%+ Owner
Signature
By: /s/ Jacob Best; Jacob Best, Vice President of H&F Corporate Investors X, Ltd., the general partner of Hellman & Friedman Investors X, L.P., the general partner of Hellman & Friedman Capital Partners X (Parallel), L.P.
Issuer symbol
MDLN
Transactions as of
17 Dec 2025
Net transactions value
$0
Form type
3
Filing time
17 Dec 2025, 21:04:53 UTC
Next filing
22 Dec 2025

Reporting Owners (9)

Name Relationship Address Signature Signature date CIK
Hellman & Friedman Capital Partners X (Parallel), L.P. 10%+ Owner C/O HELLMAN & FRIEDMAN LLC, 415 MISSION STREET, SUITE 5700, SAN FRANCISCO By: /s/ Jacob Best; Jacob Best, Vice President of H&F Corporate Investors X, Ltd., the general partner of Hellman & Friedman Investors X, L.P., the general partner of Hellman & Friedman Capital Partners X (Parallel), L.P. 17 Dec 2025 0001841430
HFCP X (Parallel-A), L.P. 10%+ Owner C/O HELLMAN & FRIEDMAN LLC, 415 MISSION STREET, SUITE 5700, SAN FRANCISCO By: /s/ Jacob Best; Jacob Best, Vice President of H&F Corporate Investors X, Ltd., the general partner of Hellman & Friedman Investors X, L.P., the general partner of HFCP X (Parallel - A), L.P. 17 Dec 2025 0001841189
Mend Partners II, L.P. 10%+ Owner C/O HELLMAN & FRIEDMAN LLC, 415 MISSION STREET, SUITE 5700, SAN FRANCISCO By: /s/ Jacob Best; Jacob Best, Vice President of H&F Corporate Investors X, Ltd., the general partner of Hellman & Friedman Investors X, L.P., the managing member of Mend Partners GP, LLC, the general partner of Mend Partners II, L.P. 17 Dec 2025 0001877047
Mend Investment Holdings I, L.P. 10%+ Owner C/O HELLMAN & FRIEDMAN LLC, 415 MISSION STREET, SUITE 5700, SAN FRANCISCO By: /s/ Jacob Best; Jacob Best, Vice President of H&F Corporate Investors X, Ltd., the general partner of Hellman & Friedman Capital Partners X, L.P., the managing member of Mend Investment Holdings GP, LLC, the G.P. of Mend Investment Holdings I, L.P. 17 Dec 2025 0002074968
Hellman & Friedman Investors X, L.P. 10%+ Owner C/O HELLMAN & FRIEDMAN LLC, 415 MISSION STREET, SUITE 5700, SAN FRANCISCO By: /s/ Jacob Best; Jacob Best, Vice President of H&F Corporate Investors X, Ltd., the general partner of Hellman & Friedman Investors X, L.P. 17 Dec 2025 0001868392
Mend Partners GP, LLC 10%+ Owner C/O HELLMAN & FRIEDMAN LLC, 415 MISSION STREET, SUITE 5700, SAN FRANCISCO By: /s/ Jacob Best; Jacob Best, Vice President of H&F Corporate Investors X, Ltd., the general partner of Hellman & Friedman Investors X, L.P., the managing member of Mend Partners GP, LLC 17 Dec 2025 0002074972
Mend Investment Holdings GP, LLC 10%+ Owner C/O HELLMAN & FRIEDMAN LLC, 415 MISSION STREET, SUITE 5700, SAN FRANCISCO By: /s/ Jacob Best; Jacob Best, Vice President of H&F Corporate Investors X, Ltd., the general partner of Hellman & Friedman Investors X, L.P., the managing member of Mend Investment Holding GP LLC 17 Dec 2025 0002074980
Hellman & Friedman Capital Partners X, L.P. 10%+ Owner C/O HELLMAN & FRIEDMAN LLC, 415 MISSION STREET, SUITE 5700, SAN FRANCISCO By: /s/ Jacob Best; Jacob Best, Vice President of H&F Corporate Investors X, Ltd., the general partner of Hellman & Friedman Capital Partners X, L.P. 17 Dec 2025 0001841434
H&F Corporate Investors X, Ltd. 10%+ Owner C/O HELLMAN & FRIEDMAN LLC, 415 MISSION STREET, SUITE 5700, SAN FRANCISCO By: /s/ Jacob Best; Jacob Best, Vice President of H&F Corporate Investors X, Ltd. 17 Dec 2025 0001901930

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding MDLN Class A Common Stock 93,969,957 17 Dec 2025 By Hellman & Friedman Capital Partners X (Parallel), L.P. F1, F2
holding MDLN Class A Common Stock 9,815,998 17 Dec 2025 By HFCP X (Parallel - A), L.P. F1, F2
holding MDLN Class A Common Stock 5,267,920 17 Dec 2025 By Mend Partners II, L.P. F1, F2
holding MDLN Class A Common Stock 19,310 17 Dec 2025 By Mend Investment Holdings I, L.P. F1, F2
holding MDLN Class B Common Stock 126,915,427 17 Dec 2025 By Mend Investment Holdings I, L.P. F1, F2, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
holding MDLN Common Units 17 Dec 2025 Class A Common Stock 126,915,427 By Mend Investment Holdings I, L.P. F1, F2, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Hellman & Friedman Investors X, L.P. ("Investors X GP") is the general partner of Hellman & Friedman Capital Partners X (Parallel), L.P. and HFCP X (Parallel - A), L.P. Mend Partners GP, LLC ("Mend GP") is the general partner of Mend Partners II, L.P. Investors X GP is the managing member of Mend GP. Mend Investment Holdings GP, LLC ("Mend Investment GP") is the general partner of Mend Investment Holdings I, L.P. Hellman & Friedman Capital Partners X, L.P. is the managing member of Mend Investment GP. Investors X GP is the general partner of Hellman & Friedman Capital Partners X, L.P. H&F Corporate Investors X, Ltd. ("Investors X Ltd.") is the general partner of Investors X GP.
F2 (Continued from footnote 1) A three-member board of directors of Investors X Ltd. has voting and investment discretion over the securities held by Hellman & Friedman Capital Partners X (Parallel), L.P., HFCP X (Parallel - A), L.P., Mend Partners II, L.P., and Mend Investment Holdings I, L.P. Each of the members of the board of directors of Investors X Ltd. disclaims beneficial ownership of such shares.
F3 Shares of the Issuer's Class B common stock ("Class B Common Stock") have no economic value and have one vote per share. One share of Class B Common Stock is issued for each common unit of Medline Holdings, LP ("Common Units") held. Upon an exchange of Common Units for shares of the Issuer's Class A common stock ("Class A Common Stock"), an equivalent number of shares of Class B Common Stock held by such holder will be automatically cancelled.
F4 Pursuant to the terms of an exchange agreement, dated as of December 16, 2025, holders have the right to exchange their Common Units for shares of Class A Common Stock on a one-for-one basis, subject to customary conversion rate adjustments for stock splits, stock dividends and reclassifications. These exchange rights do not expire.

Remarks:

The Reporting Persons are jointly filing this Form 3 pursuant to Rule 16a-3(j) under the Exchange Act. This filing shall not be deemed an admission that for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise, that the Reporting Persons are subject to Section 16 of the Exchange Act or that the Reporting Persons are the beneficial owners of any equity securities in excess of their respective pecuniary interests, and each Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein, if any.