SIMPSON ADAM K. (Chief Executive Officer) sold 36.9% of their position (152.21K shares) of ICOSAVAX, INC. on the open market

Open‑market sale worth $2.35M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 3 sales

SIMPSON ADAM K.

Filed: 12/22/2023ACC: 0001209191-23-059625

InsiderSIMPSON ADAM K.CIK 1873839

→

IssuerICOSAVAX, INC.CIK 1786255

DirectorOfficer· Chief Executive Officer

Since Jul 2021

-152.21K

Net shares

Net seller

$2.35M

Total sold

Open market trades

0B · 3S

Total transactions

165.92K acquired · 318.12K disposed

Non-Derivative Transactions6

Common Stock

Direct

S · Sale

−62.20K

Price / share

$15.46

Trade value

$961.51K

% of position

25.2%

12/20/2023

246.93K→184.72K

Common Stock

Direct

M · Option Exercise

+102.57K

Price / share

$1.04

Trade value

$106.68K

% of position

55.5%

12/21/2023

184.72K→287.30K

Common Stock

Direct

M · Option Exercise

+40K

Price / share

$2.47

Trade value

$98.80K

% of position

13.9%

12/21/2023

287.30K→327.30K

Common Stock

Direct

M · Option Exercise

+23.34K

Price / share

$0.84

Trade value

$19.61K

% of position

7.1%

12/21/2023

327.30K→350.64K

Common Stock

Direct

S · Sale

−50K

Price / share

$15.44

Trade value

$772.22K

% of position

14.3%

12/21/2023

350.64K→300.64K

Common Stock

Direct

S · Sale

−40K

Price / share

$15.43

Trade value

$617.06K

% of position

13.3%

12/21/2023

300.64K→260.64K

Total

Net shares

+13.71K

Net value

-$2.13M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	12/20/2023	S · Sale	−62.20K	$15.46	$961.51K	25.2%	246.93K	184.72K
Common Stock Direct	12/21/2023	M · Option Exercise	+102.57K	$1.04	$106.68K	55.5%	184.72K	287.30K
Common Stock Direct	12/21/2023	M · Option Exercise	+40K	$2.47	$98.80K	13.9%	287.30K	327.30K
Common Stock Direct	12/21/2023	M · Option Exercise	+23.34K	$0.84	$19.61K	7.1%	327.30K	350.64K
Common Stock Direct	12/21/2023	S · Sale	−50K	$15.44	$772.22K	14.3%	350.64K	300.64K
Common Stock Direct	12/21/2023	S · Sale	−40K	$15.43	$617.06K	13.3%	300.64K	260.64K
Total			+13.71K		-$2.13M

Derivative Transactions3

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Common Stock

102.57K shares

−102.57K

Strike price

1.04

Held after

314.68K

Exercisable

—

12/21/2023

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Common Stock

40K shares

−40K

Strike price

2.47

Held after

237.15K

Exercisable

—

12/21/2023

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Common Stock

23.34K shares

−23.34K

Strike price

0.84

Held after

4.79K

Exercisable

—

12/21/2023

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Right to Buy) Direct	Common Stock102.57K shares	12/21/2023	M · Option Exercise	−102.57K	1.04	—	314.68K
Stock Option (Right to Buy) Direct	Common Stock40K shares	12/21/2023	M · Option Exercise	−40K	2.47	—	237.15K
Stock Option (Right to Buy) Direct	Common Stock23.34K shares	12/21/2023	M · Option Exercise	−23.34K	0.84	—	4.79K

Non-Derivative Holdings (Post-Transaction)3

Common Stock

Indirect

Shares owned129.03K

Common Stock

Indirect

Shares owned129.03K

Common Stock

Indirect

Shares owned531.58K

Total

789.64K indirect789.64K

Security Title	Shares Owned	Ownership Type
Common Stock	129.03K	Indirect
Common Stock	129.03K	Indirect
Common Stock	531.58K	Indirect
Total	789.64K	789.64K indirect

Derivative Holdings (Post-Transaction)0

No derivative holdings reported