[Form 4] Inogen Inc Insider Trading Activity

Rhea-AI Filing Summary

Inogen Inc executive Mary E. Wright, the VP and Chief Accounting Officer, reported several equity compensation transactions. On March 1, 2026, multiple restricted stock unit tranches, including 1,755, 2,750 and 3,001 units, were exercised or converted into common stock at no cash cost. She also received common stock grants of 1,500 and 1,351 shares, while 675, 520, 1,058 and 1,155 shares of common stock at $6.10 were withheld to cover tax liabilities on the vesting awards. A separate grant of 8,000 restricted stock units was awarded on February 27, 2026, with vesting over several years subject to continued service.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Wright Mary E

(Last) (First) (Middle)

C/O INOGEN, INC.

500 CUMMINGS CENTER, SUITE 2800

(Street)

BEVERLY MA 01915

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Inogen Inc [ INGN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP, Chief Accounting Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/27/2026

4. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/01/2026		A		1,500(1)	A	$6.1	13,680	D
Common Stock	03/01/2026		M		1,755	A	$0	15,435	D
Common Stock	03/01/2026		F		675(2)	D	$6.1	14,760	D
Common Stock	03/01/2026		A		1,351(3)	A	$0	16,111	D
Common Stock	03/01/2026		F		520(4)	D	$6.1	15,591	D
Common Stock	03/01/2026		M		2,750	A	$0	18,341	D
Common Stock	03/01/2026		F		1,058(2)	D	$6.1	17,283	D
Common Stock	03/01/2026		M		3,001	A	$0	20,284	D
Common Stock	03/01/2026		F		1,155(2)	D	$6.1	19,129	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit	(5)	02/27/2026		A		8,000		(6)	(6)	Common Stock	8,000	$0	8,000	D
Restricted Stock Unit	(5)	03/01/2026		M			1,755	(7)	(7)	Common Stock	1,755	$0	0	D
Restricted Stock Unit	(5)	03/01/2026		M			2,750	(8)	(8)	Common Stock	2,750	$0	2,749	D
Restricted Stock Unit	(5)	03/01/2026		M			3,001	(9)	(9)	Common Stock	3,001	$0	6,002	D

Explanation of Responses:

1. Shares acquired through the Company's 2014 Employee Stock Purchase Plan.

2. The reported shares were withheld to cover the reporting person's tax withholding liability in connection with a portion of a time-based restricted stock unit award that vested on March 1, 2026.

3. The reported securities represent shares earned and vested on March 1, 2026 based on achievement of the financial performance conditions for the 2025 fiscal year that were approved as part of the 2023 performance-based restricted stock unit award granted on February 28, 2023.

4. The reported shares were withheld to cover the reporting person's tax withholding liability in connection with the 2023 performance-based restricted stock unit award granted on February 28, 2023 and vested on March 1, 2026.

5. Each restricted stock unit represents a contingent right to receive one share of Inogen common stock.

6. Subject to the reporting person's continued service, 1/3rd of the restricted stock units shall vest on March 1, 2027 (the "2027 Vesting Commencement Date"), and 1/3rd of the restricted stock units shall vest every year thereafter on the same day of the year as the 2027 Vesting Commencement Date.

7. The restriced stock units were fully vested on March 1, 2026.

8. 1/3rd of the restricted stock units vested on March 1, 2025 (the "2025 Vesting Commencement Date"), and subject to the reporting person's continued service, 1/3rd of the restricted stock units shall vest every year thereafter on the same day of the year as the 2025 Vesting Commencement Date.

9. 1/3rd of the restricted stock units vested on March 1, 2026 (the "2026 Vesting Commencement Date"), and subject to the reporting person's continued service, 1/3rd of the restricted stock units shall vest every year thereafter on the same day of the year as the 2026 Vesting Commencement Date.

	/s/ Mary Wright	03/03/2026
	** Signature of Reporting Person	Date
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