The Boeing Company (BA) DEFA14A Additional proxy soliciting materials

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

(Rule 14a-101)

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by the Registrant  ☒                             Filed by a Party other than the Registrant  ☐

Check the appropriate box:

☐	Preliminary Proxy Statement
☐	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐	Definitive Proxy Statement
☒	Definitive Additional Materials
☐	Soliciting Material Pursuant to §240.14a-12

THE BOEING COMPANY

(Name of Registrant as Specified In Its Charter)

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Important Notice Regarding the Availability of Proxy Materials for Boeing’s Annual Meeting of Shareholders to be held on April 27, 2020

This notice has been sent on behalf of The Boeing Company and provides voting instructions and deadlines relating to shares of Boeing stock that are registered in your name. The items of business and the recommendations of the Board of Directors are described in the 2020 Proxy Statement, which we encourage you to read before voting.

Your vote is important.Click here to vote now.

How to Vote

Voting Deadline: April 26, 2020 at 10:59 p.m., Central Time

Annual Meeting

The Boeing Company 2020 Annual Meeting of Shareholders will be held April 27, 2020 at 9:00 a.m., Central Time at The Field Museum located at 1400 South Lake Shore Drive, Chicago, Illinois.

Annual Meeting Admission Policy: Advance Registration Required

If you plan to attend the Annual Meeting, you must obtain an admission ticket by registering no later than April 17, 2020. To register, click the “Register for Meeting” link atwww.proxyvote.com and follow the instructions provided. You must bring your admission ticket and a valid, government-issued photo identification in order to gain access to the Annual Meeting.

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Annual Meeting Materials

Boeing’s 2020 Proxy Statement and 2019 Annual Report can be viewed athttps://materials.proxyvote.com/097023. You can request a paper copy of these materials by calling1-800-579-1639 or emailing sendmaterial@proxyvote.com. If requesting material by email, please send a blank email with only the16-digit Voting Control Number (located above) in the subject line.

Please note that if you own shares of The Boeing Company stock in multiple accounts, for example through a broker or bank, you may receive (either electronically or by mail) multiple proxy packages and voting instructions that are not duplicates. Please be sure to vote all of your Boeing shares in each of your accounts. Each email or notice you receive contains a unique16-digit control number to vote, so if you receive more than one email or notice with a unique16-digit control number you must vote each one in order to vote all of your shares. If you have any questions or comments aboutwww.proxyvote.com, please reply to this email and include the original text and subject line of the message for identification purposes.

2

Important Notice Regarding the Availability of Proxy Materials for Boeing’s Annual Meeting of Shareholders to be held on April 27, 2020

This notice has been sent on behalf of The Boeing Company and provides voting instructions and deadlines relating to shares of Boeing stock that are registered in your name as well as interests in Boeing stock held through your participation in The Boeing Company Voluntary Investment Plan (the “VIP”). The items of business and the recommendations of the Board of Directors are described in the 2020 Proxy Statement, which we encourage you to read before voting.

Your vote is important.Click here to vote now.

How to Vote

Voting Deadline: Wednesday, April 22, 2020 at 10:59 p.m., Central Time

Annual Meeting

The Boeing Company 2020 Annual Meeting of Shareholders will be held April 27, 2020 at 9:00 a.m., Central Time at The Field Museum located at 1400 South Lake Shore Drive, Chicago, Illinois.

1

Annual Meeting Admission Policy: Advance Registration Required

If you plan to attend the Annual Meeting, you must obtain an admission ticket by registering no later than April 17, 2020. To register, click the “Register for Meeting” link atwww.proxyvote.com and follow the instructions provided. You must bring your admission ticket and a valid, government-issued photo identification in order to gain access to the Annual Meeting.

Annual Meeting Materials

Boeing’s 2020 Proxy Statement and 2019 Annual Report can be viewed athttps://materials.proxyvote.com/097023. You can request a paper copy of these materials by calling1-800-579-1639 or emailing sendmaterial@proxyvote.com. If requesting material by email, please send a blank email with only the16-digit Voting Control Number (located above) in the subject line.

Please note that if you own shares of The Boeing Company stock in multiple accounts, for example through a broker or bank, you may receive (either electronically or by mail) multiple proxy packages and voting instructions that are not duplicates. Please be sure to vote all of your Boeing shares in each of your accounts. Each email or notice you receive contains a unique16-digit control number to vote, so if you receive more than one email or notice with a unique16-digit control number you must vote each one in order to vote all of your shares. If you have any questions or comments aboutwww.proxyvote.com, please reply to this email and include the original text and subject line of the message for identification purposes.

2

Important Notice Regarding the Availability of Proxy Materials for Boeing’s Annual Meeting of Shareholders to be held on April 27, 2020

This notice has been sent on behalf of The Boeing Company and provides voting instructions and deadlines relating to interests in Boeing stock held through your participation in The Boeing Company Voluntary Investment Plan (the “VIP”). The items of business and the recommendations of the Board of Directors are described in the 2020 Proxy Statement, which we encourage you to read before voting.

Your vote is important.Click here to vote now.

How to Vote

Voting Deadline: Wednesday, April 22, 2020 at 10:59 p.m., Central Time

Annual Meeting

The Boeing Company 2020 Annual Meeting of Shareholders will be held April 27, 2020 at 9:00 a.m., Central Time at The Field Museum located at 1400 South Lake Shore Drive, Chicago, Illinois.

Annual Meeting Admission Policy: Advance Registration Required

If you plan to attend the Annual Meeting, you must obtain an admission ticket by registering no later than April 17, 2020. To register, click the “Register for Meeting” link atwww.proxyvote.com and follow the instructions provided. You must bring your admission ticket and a valid, government-issued photo identification in order to gain access to the Annual Meeting.

1

Annual Meeting Materials

Boeing’s 2020 Proxy Statement and 2019 Annual Report can be viewed athttps://materials.proxyvote.com/097023. You can request a paper copy of these materials by calling1-800-579-1639 or emailing sendmaterial@proxyvote.com. If requesting material by email, please send a blank email with only the16-digit Voting Control Number (located above) in the subject line.

Please note that if you own shares of The Boeing Company stock in multiple accounts, for example through a broker or bank, you may receive (either electronically or by mail) multiple proxy packages and voting instructions that are not duplicates. Please be sure to vote all of your Boeing shares in each of your accounts. Each email or notice you receive contains a unique16-digit control number to vote, so if you receive more than one email or notice with a unique16-digit control number you must vote each one in order to vote all of your shares. If you have any questions or comments aboutwww.proxyvote.com, please reply to this email and include the original text and subject line of the message for identification purposes.

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