Supplemental Agreement No. 07 to Purchase Agreement No. 04761 between The Boeing Company and United Airlines, Inc. dated as of August 12, 2021

THIS SUPPLEMENTAL AGREEMENT No. 7 (SA-7) is entered into as of August 12, 2021 by and between The Boeing Company, a Delaware corporation, (Boeing) and United Airlines, Inc., a Delaware corporation, (Customer);

WHEREAS, Customer and Boeing entered into Purchase Agreement No. 04761 dated as of the 15th day of May of 2018 as amended and supplemented (Purchase Agreement), relating to the purchase and sale of Model 737 MAX aircraft. This Supplemental Agreement is an amendment to the Purchase Agreement; and

WHEREAS, solely to conform and further amend the Purchase Agreement to reflect Customer and Boeing’s agreement regarding the following matters without duplication of any consideration being provided to Customer to:

(i)Revise the Table 1 for *** 737-*** Aircraft to update the *** applicable to the *** 737-*** Aircraft;

(ii)Add *** factors for the 737-***;

(iii)Substitute *** 737-*** Aircraft into *** 737-*** aircraft (***) including

(a)add a new Table 1 for the *** 737-*** Aircraft;

(b)revise Table 2 to delete *** 737-*** Aircraft; and

(c)revise certain *** considerations to incorporate the *** 737-*** Aircraft.

NOW THEREFORE, in consideration of the mutual covenants herein contained, the parties agree to amend the Purchase Agreement as follows:

The “Table of Contents” is deleted in its entirety and replaced with the attached “Table of Contents” (identified by “SA-7”).

2.1.The Table 1 titled “*** 737-*** Aircraft Delivery, Description, Price and ***” is deleted in its entirety and replaced with the attached similarly titled Table 1 (identified by “SA-7”) to correct the *** features amount specified in such Table 1.

2.2.The Table 1 titled “*** 737-*** Aircraft Delivery, Description, Price and ***” (identified by “SA-7”) is added to the Purchase Agreement to incorporate the *** 737-*** Aircraft which were *** from *** 737-*** Aircraft.

2.3.Table 2 titled “*** 737-*** Aircraft Delivery, Description, Price and ***” is deleted in its entirety and replaced with the attached Table 2 (identified by “SA-7”) to *** 737-*** Aircraft which have been *** into *** 737-*** Aircraft.

2.4.Exhibit A entitled “737-8 Aircraft Configuration” is deleted in its entirety and replaced with the attached similarly titled Exhibit A (identified by “SA-7”) to update the *** applicable to 737-*** Aircraft *** of Customer’s original *** 737-*** Aircraft order.

3.Letter Agreements.

3.1.Letter Agreement No. UAL-PA-04761-LA-1801474 is deleted in its entirety and replaced with Letter Agreement No. UAL-PA-04761-LA-1801474R1 titled “*** for the 737-10 Aircraft” (identified by “SA7”) to *** the applicable *** factors for ***.

3.2.Letter Agreement No. UAL-PA-04761-LA ###-###-#### is deleted in its entirety and replaced with Letter Agreement No. UAL-PA-04761-LA-2100096R1 titled “Certain Special Matters for the 737-*** Aircraft and for the *** 737-*** Aircraft” (identified by “SA-7”) to incorporate the *** 737-*** Aircraft.

The Purchase Agreement will be deemed supplemented to the extent provided herein as of the date hereof and as so supplemented will continue in full force and effect.

The Detail Specification is Boeing document number *** As soon as practicable, Boeing will furnish to Customer copies of the Detail Specification, which copies will reflect such ***.

Subject:    Certain Special Matters for the 737-*** Aircraft (*** Aircraft) and for the *** 737-*** Aircraft (*** 737-*** Aircraft)

Reference:    Purchase Agreement No.  04761 (Purchase Agreement) between The Boeing Company (Boeing) and United Airlines, Inc. (Customer) relating to Model 737 MAX aircraft (Aircraft)

This letter agreement (Letter Agreement) amends and supplements the Purchase Agreement. All terms used but not defined in this Letter Agreement shall have the same meaning as in the Purchase Agreement. This Letter Agreement supersedes and replaces in its entirety Letter Agreement UAL-PA-04761-LA-LA ###-###-####.

1.***

At the time of delivery of each *** Aircraft and each *** 737-*** Aircraft, unless otherwise noted, Boeing ***:

***

3.*** of One (1) Letter Agreement to *** Aircraft.

The terms of Letter Agreement UAL-PA-04761-LA-1807420R1 entitled 737-*** and 737-*** Aircraft Model *** shall *** to each *** Aircraft.

4.Assignment.

Unless otherwise noted herein, the *** described in this Letter Agreement are provided as a *** to Customer and in consideration of Customer’s taking title to the Aircraft at time of delivery and becoming the operator of the Aircraft. Except as provided in Letter Agreement No. UAL-PA-04761-LA-1801472, this Letter Agreement cannot be assigned, in whole or in part, without the prior written consent of Boeing. ***.

5.Confidentiality

Customer and Boeing understand that certain commercial and financial information contained in this Letter Agreement are considered by Boeing and Customer as confidential and are subject to the terms and conditions set forth in Letter Agreement No. UAL-PA-04761-LA-1801470.

Subject:    *** for the 737-10 Aircraft

Reference:    Purchase Agreement No. 04761 (Purchase Agreement) between The Boeing Company (Boeing) and United Continental Holdings, Inc. (Customer) relating to Model 737 MAX aircraft (Aircraft)

This letter agreement (Letter Agreement) amends and supplements the Purchase Agreement. All terms used but not defined in this Letter Agreement shall have the same meaning as in the Purchase Agreement. For the purposes of this Letter Agreement, the term 737-10 Aircraft shall also include any 737-10 aircraft added to the Purchase Agreement subsequent to the date of this Letter Agreement. This Letter Agreement supersedes and replaces in its entirety Letter Agreement UAL-PA-04761-LA-1801474.

1.Definitions.

737-10 *** Notice means the written communication provided by Boeing to Customer in accordance with the requirements of Article 4.1, below.

737-10 Program Aircraft means each 737-10 Aircraft specified in the Purchase Agreement.

2.Applicability.

Notwithstanding any other provision of the Purchase Agreement to the contrary, the parties agree that the *** for the Airframe Price and *** Features Prices for each 737-10 Program Aircraft shall be determined in accordance with this Letter Agreement.

3.*** Forecast.

Boeing will release an *** forecast in *** of each year based on Boeing’s then current standard ***. Only one *** forecast shall be used to conduct the *** analysis performed in accordance with Article 4.1, below, for a given 737-10 Program Aircraft. The *** forecast applicable to a given 737-10 Program Aircraft is set forth in Attachment A.

4.***

In the event that Boeing *** either the 737-10 *** Notice as detailed in Article 4.1.2 or Article 4.1.3 and Customer ***, then Customer *** the Purchase Agreement with respect to such affected 737-10 Program Aircraft.

4.2If Boeing provides Customer the *** described in Article 4.1.2 or Article 4.1.3 above, then Customer shall notify Boeing *** contained in Articles 4.1.2, 4.1.3, or 4.1.4 above within *** days of its receipt of the 737-10 *** Notice from Boeing. In the event Customer *** in accordance with Article 4.1.4 above, then Boeing *** to Customer, *** for the *** 737-10 Program Aircraft.

4.2.1Within *** days of Boeing’s receipt of *** notice for any such *** 737-10 Program Aircraft under Article 4.2 above, Boeing *** by written notice to Customer to *** related to such terminated 737- 10 Program Aircraft ***, by Customer.

4.2.2Should Customer *** any notice to Boeing in accordance with Article 4.2 above, then the *** for such 737-10 Program Aircraft shall be *** in accordance with Article 4.1.2.

4.3In the event that the *** of a 737-10 Program Aircraft that is subject to either Article 4.1.1, Article 4.1.2 or Article 4.1.3 above, *** applicable to such 737-10 Program Aircraft will be determined pursuant to Article 5 below.

7.***

***, identified in the Purchase Agreement as subject to *** pursuant to Supplemental Exhibit AE2, and which pertains to the 737-10 Program Aircraft shall be ***.

8.Assignment.

Except as provided in Letter Agreement No. UAL-PA-04761-LA-1801472, the rights and obligations described in this Letter Agreement are provided to Customer in consideration of Customer’s becoming the operator of the Aircraft and cannot be assigned in whole or, in part.

9.Confidential Treatment.

Customer and Boeing understand that certain commercial and financial information contained in this Letter Agreement are considered by Boeing and Customer as confidential and are subject to the terms and conditions set forth in Letter Agreement No. UAL-PA-04761-LA- 1801470.