Washington, D.C. 20549


Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB Number: 3235-0104
Estimated average burden
hours per response: 0.5
1. Name and Address of Reporting Person*
Worster Anne

(Last) (First) (Middle)
P. O. BOX 66100 HDQLD


(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
3. Issuer Name and Ticker or Trading Symbol
United Airlines Holdings, Inc. [ UAL ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
Exhibit List: Exhibit 24 - Authorization and Designation.
No securities are beneficially owned.
/s/ James Cotton for Anne Worster 03/08/2024
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
Exhibit 24 United Airlines Holdings, Inc. Authorization and Designation to Sign and File Section 16 Reporting Forms and Form 144s The undersigned does hereby authorize and designate E. Anna Ha, James Cotton, Sylvia Baraniewski and Robert Rivkin (the “Authorized Persons”) to prepare, sign and file on her behalf: (i) any and all Forms 3, 4, 5 and Form ID, including any amendments thereto, relating to equity securities of United Airlines Holdings, Inc., a Delaware corporation (the “Company”) with the Securities and Exchange Commission (the “SEC”) pursuant to the requirements of Section 16 of the Securities Exchange Act of 1934, as amended (“Section 16”), and the rules promulgated thereunder; and (ii) any and all Forms 144 relating to equity securities of the Company with the SEC pursuant to Rule 144 under the Securities Act of 1933, as amended, in each case which may be necessary or desirable as a result of her ownership of or transaction in securities of the Company. The undersigned further hereby authorizes and designates the Authorized Persons to do and perform any and all acts for and on her behalf as may be necessary or desirable to prepare, sign and file the forms contemplated by this Authorization. The undersigned hereby confirms any action relating to the preparation, signing and filing of (i) and (ii) above, performed by the above mentioned individuals on her behalf and revokes any prior Authorization and Designation to Sign and File Section 16 Reporting Forms and Forms 144 relating to equity securities of the Company. This authorization, unless earlier revoked in writing, shall be valid until the undersigned's reporting obligations under Section 16 and Rule 144 with respect to securities of the Company shall cease. IN WITNESS WHEREOF, the undersigned has executed this Authorization and Designation this 28th day of February, 2024. Signature: /s/ Anne M. Worster Printed Name: Anne Worster