Company: INGN
Filing Date: 2025-03-27
Form Type: DEF 14A
Source: 0000950170-25-045737
Chunk: 2

Company: Inogen Inc
Filing Date: 2025-03-27
Form: DEF 14A
Chunk 2
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 instructions on how to access our proxy statement for our annual meeting and our annual report to stockholders (“Annual Report”). This Notice provides instructions on how to vote online or by telephone and includes instructions on how to receive a paper copy of proxy materials by mail. The proxy statement and our Annual Report can be accessed directly at the following Internet address: http://www.proxyvote.com by entering the control number located on your proxy card.               |                                                                                                                                                                    |
| Voting                                             | IMPORTANTYour vote is very important. Whether or not you plan to attend the Annual Meeting, we encourage you to read the proxy statement and submit your proxy or voting instructions as soon as possible. For specific instructions on how to vote your shares, please refer to the instructions in the section entitled “Questions and Answers About the Annual Meeting” beginning on page 1 of the proxy statement.                                                                                                                                                                                                                                  |                                                                                                                                                                    |

Important Notice Regarding the Availability of Proxy Materials for the virtual Annual Meeting to Be Held on May 14, 2025.The notice of annual meeting, proxy statement, proxy card, and Annual Report are available by visiting http://www.proxyvote.com. All you have to do is enter the control number located on your proxy card.

By order of the Board of Directors,

Kevin P. Smith

General Counsel and Executive Vice President, Business Development

Goleta, California

March 27, 2025

The Notice of Internet Availability of Proxy Materials is first being mailed to our stockholders on or about March 27, 2025. The proxy materials are first being posted onhttp://www.proxyvote.comon or about March 27, 2025.

<div align='center'>TABLE OF CONTENTS</div>

|                                                                                                                                     | Page |
| QUESTIONS AND ANSWERS ABOUT THE ANNUAL MEETING                                                                                      |    1 |
| BOARD OF DIRECTORS AND CORPORATE GOVERNANCE                                                                                         |    9 |
| Nominees for Director                                                                                                               |    9 |
| Continuing Directors                                                                                                                |   10 |
| Director Independence                                                                                                               |   12 |
| Board Leadership Structure                                                                                                          |   12 |
| Board Diversity                                                                                                                     |   12 |
| Board Meetings and Committees                                                                                                       |   13 |
| Audit Committee                                                                                                                     |   13 |
| Compensation Committee                                                                                                              |   14 |
| Compliance Committee                                                                                                                |   14 |
| Nominating and Governance Committee                                                                                                 |   15 |
| Compensation Committee Interlocks and Insider Participation                                                                         |   15 |
|