SEC FORM 3

SEC FORM 3SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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1. Name and Address of Reporting Person^*

Walker Robert Edward

(Last)

(First)

(Middle)

C/O NOVAVAX, INC.

21 FIRSTFIELD ROAD

(Street)

GAITHERSBURG

MARYLAND

20878

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
04/14/2026

3. Issuer Name and Ticker or Trading Symbol
NOVAVAX INC [ NVAX ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	EVP, R&D

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)
Common Stock	34,386	D

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)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	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)
Stock Option (Right to Buy)	⁽¹⁾	03/07/2033⁽¹⁾	Common Stock	11,500	$6.97	D
Restricted Stock Units	⁽²⁾	⁽²⁾	Common Stock	47,600	$0.00	D
Stock Option (Right to Buy)	⁽³⁾	03/03/2035⁽³⁾	Common Stock	22,510	$10.11	D
Restricted Stock Units	⁽⁴⁾	⁽⁴⁾	Common Stock	29,490	$0.00	D
Stock Option (Right to Buy)	⁽⁵⁾	03/02/2036⁽⁵⁾	Common Stock	18,826	$8.39	D
Restricted Stock Units	⁽⁶⁾	⁽⁶⁾	Common Stock	26,300	$0.00	D

Explanation of Responses:

1. Twenty-five percent (25%) of the shares subject to this option grant under the Novavax, Inc. (the "Company") Amended and Restated 2015 Stock Incentive Plan, as amended (the "Plan"), vested on the first anniversary of the March 7, 2023 grant date, and the remaining seventy-five percent (75%) of the shares vested or will vest in equal monthly installments over the following three (3) years, in each case subject to continued employment with the Company through such vesting date.

2. The RSUs subject to this grant under the Plan vested or will vest with respect to one-third (1/3) of the RSUs on each of the first three (3) anniversaries of the March 1, 2024 grant date, in each case subject to continued employment with the Company through such vesting date.

3. Twenty-five percent (25%) of the shares subject to this option grant under the Plan vested on the first anniversary of the March 3, 2025 grant date, and the remaining seventy-five percent (75%) of the shares vested or will vest in equal monthly installments over the following three (3) years, in each case subject to continued employment with the Company through such vesting date.

4. The RSUs subject to this grant under the Plan vested or will vest with respect to one-third (1/3) of the RSUs on each of the first three (3) anniversaries of the March 3, 2025 grant date, in each case subject to continued employment with the Company through such vesting date.

5. Twenty-five percent (25%) of the shares subject to this option grant under the Plan vested on the first anniversary of the March 2, 2026 grant date, and the remaining seventy-five percent (75%) of the shares vested or will vest in equal monthly installments over the following three (3) years, in each case subject to continued employment with the Company through such vesting date.

6. The RSUs subject to this grant under the Plan vested or will vest with respect to one-third (1/3) of the RSUs on each of the first three (3) anniversaries of the March 2, 2026 grant date, in each case subject to continued employment with the Company through such vesting date.

Remarks:

Exhibit 24 - Power of Attorney

	/s/ Mark J. Casey, Attorney-in-Fact	04/16/2026
	** 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.
* Form 3: SEC 1473 (03-26)

SEC Form 3 filed by new insider Walker Robert Edward