NVAX

SEC source: 0001209191-20-052527 · doc4.xml · derivative · entry 17

Herrmann John A III · CIK 0001610928 · EVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,250

Underlying: Common Stock · 24,750 shares

Expires 2029-09-26

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F17 · derivative.exercise_date: Twenty-five percent (25%) of the shares subject to this option grant vested on the first anniversary of the September 26, 2019 grant date, and the remaining seventy-five percent (75%) of the shares will vest in equal monthly installments over the following three (3) years, in each case subject to continued employment through such vesting date.

SEC source: 0001209191-20-052527 · doc4.xml · nonDerivative · entry 12

Herrmann John A III · CIK 0001610928 · EVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,304

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F12 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $116.61 to $117.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052527 · doc4.xml · nonDerivative · entry 11

Herrmann John A III · CIK 0001610928 · EVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,850

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F11 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $115.61 to $116.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052527 · doc4.xml · nonDerivative · entry 10

Herrmann John A III · CIK 0001610928 · EVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,791

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F10 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $114.61 to $115.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052527 · doc4.xml · nonDerivative · entry 9

Herrmann John A III · CIK 0001610928 · EVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,783

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F9 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $113.61 to $114.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052527 · doc4.xml · nonDerivative · entry 8

Herrmann John A III · CIK 0001610928 · EVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,180

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F8 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $112.61 to $113.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052527 · doc4.xml · nonDerivative · entry 7

Herrmann John A III · CIK 0001610928 · EVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,900

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F7 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $111.61 to $112.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052527 · doc4.xml · nonDerivative · entry 6

Herrmann John A III · CIK 0001610928 · EVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,113

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F6 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $110.61 to $111.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052527 · doc4.xml · nonDerivative · entry 5

Herrmann John A III · CIK 0001610928 · EVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,433

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F5 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $109.61 to $110.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052527 · doc4.xml · nonDerivative · entry 4

Herrmann John A III · CIK 0001610928 · EVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,485

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F4 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.61 to $109.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052527 · doc4.xml · nonDerivative · entry 3

Herrmann John A III · CIK 0001610928 · EVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,079

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F3 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.61 to $108.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052527 · doc4.xml · nonDerivative · entry 2

Herrmann John A III · CIK 0001610928 · EVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,781

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $106.61 to $107.60, inclusive. The reporting person undertakes to provide to Novavax, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052527 · doc4.xml · nonDerivative · entry 1

Herrmann John A III · CIK 0001610928 · EVP, Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,054

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001209191-20-052526 · doc4.xml · derivative · entry 17

Glenn Gregory M · CIK 0001342823 · President, R&D

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,000

Underlying: Common Stock · 25,000 shares

Expires 2029-09-26

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F17 · derivative.exercise_date: Twenty-five percent (25%) of the shares subject to this option grant vested on the first anniversary of the September 26, 2019 grant date, and the remaining seventy-five percent (75%) of the shares will vest in equal monthly installments over the following three (3) years, in each case subject to continued employment through such vesting date.

SEC source: 0001209191-20-052526 · doc4.xml · nonDerivative · entry 12

Glenn Gregory M · CIK 0001342823 · President, R&D

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,510

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F12 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $116.61 to $117.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052526 · doc4.xml · nonDerivative · entry 11

Glenn Gregory M · CIK 0001342823 · President, R&D

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,062

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F11 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $115.61 to $116.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052526 · doc4.xml · nonDerivative · entry 10

Glenn Gregory M · CIK 0001342823 · President, R&D

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,012

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F10 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $114.61 to $115.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052526 · doc4.xml · nonDerivative · entry 9

Glenn Gregory M · CIK 0001342823 · President, R&D

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,015

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F9 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $113.61 to $114.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052526 · doc4.xml · nonDerivative · entry 8

Glenn Gregory M · CIK 0001342823 · President, R&D

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,416

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F8 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $112.61 to $113.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052526 · doc4.xml · nonDerivative · entry 7

Glenn Gregory M · CIK 0001342823 · President, R&D

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,143

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F7 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $111.61 to $112.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052526 · doc4.xml · nonDerivative · entry 6

Glenn Gregory M · CIK 0001342823 · President, R&D

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,358

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F6 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $110.61 to $111.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052526 · doc4.xml · nonDerivative · entry 5

Glenn Gregory M · CIK 0001342823 · President, R&D

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,701

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F5 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $109.61 to $110.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052526 · doc4.xml · nonDerivative · entry 4

Glenn Gregory M · CIK 0001342823 · President, R&D

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,834

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F4 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.61 to $109.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052526 · doc4.xml · nonDerivative · entry 3

Glenn Gregory M · CIK 0001342823 · President, R&D

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,496

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F3 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.61 to $108.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052526 · doc4.xml · nonDerivative · entry 2

Glenn Gregory M · CIK 0001342823 · President, R&D

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,235

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $106.61 to $107.60, inclusive. The reporting person undertakes to provide to Novavax, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052526 · doc4.xml · nonDerivative · entry 1

Glenn Gregory M · CIK 0001342823 · President, R&D

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,510

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001209191-20-052524 · doc4.xml · derivative · entry 21

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,000

Underlying: Common Stock · 25,000 shares

Expires 2029-09-26

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2 · kind: The reporting person received 12,233 shares of common stock upon the net exercise of 25,000 stock appreciation rights. The reporting person forfeited 1,338 shares of common stock underlying the stock appreciation rights representing the base value and 11,429 shares of common stock underlying the stock appreciation rights to satisfy the withholding tax obligations resulting from the exercise, using the closing stock price on September 28, 2020 of $111.18.

F19 · derivative.exercise_date: Twenty-five percent (25%) of the shares subject to this stock appreciation right grant vested on the first anniversary of the Grant Date, and the remaining seventy-five percent (75%) of the shares will vest in equal monthly installments over the following three (3) years, in each case subject to continued employment through such vesting date.

SEC source: 0001209191-20-052524 · doc4.xml · derivative · entry 20

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,000

Underlying: Common Stock · 25,000 shares

Expires 2029-09-26

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F18 · derivative.exercise_date: Twenty-five percent (25%) of the shares subject to this option grant vested on the first anniversary of the September 26, 2019 grant date (the "Grant Date"), and the remaining seventy-five percent (75%) of the shares will vest in equal monthly installments over the following three (3) years, in each case subject to continued employment through such vesting date.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 15

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,839

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F13 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $116.61 to $117.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 14

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,390

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F12 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $115.61 to $116.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 13

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 38,341

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F11 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $114.61 to $115.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 12

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,343

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F10 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $113.61 to $114.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 11

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,744

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F9 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $112.61 to $113.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 10

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,471

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F8 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $111.61 to $112.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 9

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,687

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F7 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $110.61 to $111.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 8

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,030

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F6 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $109.61 to $110.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 7

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,163

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F5 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.61 to $109.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 6

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 57,824

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F4 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.61 to $108.60, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 5

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 61,563

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F3 · price: The reported price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $106.61 to $107.60, inclusive. The reporting person undertakes to provide to Novavax, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 4

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 61,839

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2 · kind: The reporting person received 12,233 shares of common stock upon the net exercise of 25,000 stock appreciation rights. The reporting person forfeited 1,338 shares of common stock underlying the stock appreciation rights representing the base value and 11,429 shares of common stock underlying the stock appreciation rights to satisfy the withholding tax obligations resulting from the exercise, using the closing stock price on September 28, 2020 of $111.18.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 3

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 73,268

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2 · kind: The reporting person received 12,233 shares of common stock upon the net exercise of 25,000 stock appreciation rights. The reporting person forfeited 1,338 shares of common stock underlying the stock appreciation rights representing the base value and 11,429 shares of common stock underlying the stock appreciation rights to satisfy the withholding tax obligations resulting from the exercise, using the closing stock price on September 28, 2020 of $111.18.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 2

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,606

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2 · kind: The reporting person received 12,233 shares of common stock upon the net exercise of 25,000 stock appreciation rights. The reporting person forfeited 1,338 shares of common stock underlying the stock appreciation rights representing the base value and 11,429 shares of common stock underlying the stock appreciation rights to satisfy the withholding tax obligations resulting from the exercise, using the closing stock price on September 28, 2020 of $111.18.

SEC source: 0001209191-20-052524 · doc4.xml · nonDerivative · entry 1

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,606

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001209191-20-052370 · doc4.xml · derivative · entry 3

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,092

Underlying: Common Stock · 6,546 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Novavax, Inc. (the "Company") common stock.

F2 · derivative.exercise_date: The RSUs subject to this grant under the Company's Amended and Restated 2015 Stock Incentive Plan, as amended, vested or will vest with respect to one-third (1/3) of the RSUs on each of the first three (3) anniversaries of the September 26, 2019 grant date, in each case subject to continued employment through such vesting date.

F2 · derivative.expiration_date: The RSUs subject to this grant under the Company's Amended and Restated 2015 Stock Incentive Plan, as amended, vested or will vest with respect to one-third (1/3) of the RSUs on each of the first three (3) anniversaries of the September 26, 2019 grant date, in each case subject to continued employment through such vesting date.

SEC source: 0001209191-20-052370 · doc4.xml · nonDerivative · entry 2

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,606

SEC source: 0001209191-20-052370 · doc4.xml · nonDerivative · entry 1

Erck Stanley C · CIK 0001342826 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,040

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Novavax, Inc. (the "Company") common stock.

SEC source: 0001209191-20-052369 · doc4.xml · derivative · entry 6

Trizzino John · CIK 0001468534 · EVP, CBO and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,076

Underlying: Common Stock · 3,538 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Novavax, Inc. (the "Company") common stock.

F3 · derivative.exercise_date: 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 Grant Date, in each case subject to continued employment through such vesting date.

F3 · derivative.expiration_date: 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 Grant Date, in each case subject to continued employment through such vesting date.

SEC source: 0001209191-20-052369 · doc4.xml · derivative · entry 5

Trizzino John · CIK 0001468534 · EVP, CBO and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 31,900 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Novavax, Inc. (the "Company") common stock.

F2 · derivative.exercise_date: One hundred percent (100%) of the RSUs subject to this grant under the Company's Amended and Restated 2015 Stock Incentive Plan, as amended (the "Plan"), vested one (1) year from the September 26, 2019 grant date (the "Grant Date"), subject to continued employment with the Company through the vesting date.

F2 · derivative.expiration_date: One hundred percent (100%) of the RSUs subject to this grant under the Company's Amended and Restated 2015 Stock Incentive Plan, as amended (the "Plan"), vested one (1) year from the September 26, 2019 grant date (the "Grant Date"), subject to continued employment with the Company through the vesting date.

SEC source: 0001209191-20-052369 · doc4.xml · nonDerivative · entry 4

Trizzino John · CIK 0001468534 · EVP, CBO and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,408

SEC source: 0001209191-20-052369 · doc4.xml · nonDerivative · entry 3

Trizzino John · CIK 0001468534 · EVP, CBO and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,117

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Novavax, Inc. (the "Company") common stock.