NOVACK DAVID F (Senior Vice President) sold 21.2% of their position (30K shares) of DYNAVAX TECHNOLOGIES CORP on the open market

Open‑market sale worth $464.7K — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

NOVACK DAVID F

Filed: 12/29/2025ACC: 0001628280-25-058985

InsiderNOVACK DAVID FCIK 1573072

→

IssuerDYNAVAX TECHNOLOGIES CORPCIK 1029142

Officer· Senior Vice President

Since Feb 2019

-17.48K

Net shares

Net seller

$1.20M

Total sold

Open market trades

0B · 1S

Total transactions

132.03K acquired · 149.51K disposed

Non-Derivative Transactions7

Common Stock

Direct

A · Award

+60.63K

Price / share

—

Trade value

—

% of position

643.7%

12/23/2025

9.42K→70.04K

Common Stock

Direct

M · Option Exercise

+22.62K

Price / share

—

Trade value

—

% of position

32.3%

12/23/2025

70.04K→92.66K

Common Stock

Direct

M · Option Exercise

+18.79K

Price / share

—

Trade value

—

% of position

20.3%

12/23/2025

92.66K→111.45K

Common Stock

Direct

M · Option Exercise

+20K

Price / share

$6.80

Trade value

$136.10K

% of position

17.9%

12/24/2025

111.45K→131.45K

Common Stock

Direct

M · Option Exercise

+10K

Price / share

$10.47

Trade value

$104.70K

% of position

7.6%

12/24/2025

131.45K→141.45K

Common Stock

Direct

S · Sale

−30K

Price / share

$15.49

Trade value

$464.70K

% of position

21.2%

12/24/2025

141.45K→111.45K

Common Stock

Direct

F · Tax Withholding

−48.11K

Price / share

$15.38

Trade value

$739.89K

% of position

43.2%

12/24/2025

111.45K→63.34K

Total

Net shares

+53.93K

Net value

-$963.79K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	12/23/2025	A · Award	+60.63K	—	—	643.7%	9.42K	70.04K
Common Stock Direct	12/23/2025	M · Option Exercise	+22.62K	—	—	32.3%	70.04K	92.66K
Common Stock Direct	12/23/2025	M · Option Exercise	+18.79K	—	—	20.3%	92.66K	111.45K
Common Stock Direct	12/24/2025	M · Option Exercise	+20K	$6.80	$136.10K	17.9%	111.45K	131.45K
Common Stock Direct	12/24/2025	M · Option Exercise	+10K	$10.47	$104.70K	7.6%	131.45K	141.45K
Common Stock Direct	12/24/2025	S · Sale	−30K	$15.49	$464.70K	21.2%	141.45K	111.45K
Common Stock Direct	12/24/2025	F · Tax Withholding	−48.11K	$15.38	$739.89K	43.2%	111.45K	63.34K
Total			+53.93K		-$963.79K

Derivative Transactions4

Restricted Stock Unit

Direct

M · Option Exercise

Converts to

Common Stock

22.62K shares

−22.62K

Strike price

Held after

22.62K

Exercisable

—

12/23/2025

Restricted Stock Unit

Direct

M · Option Exercise

Converts to

Common Stock

18.79K shares

−18.79K

Strike price

Held after

37.58K

Exercisable

—

12/23/2025

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Common Stock

20K shares

−20K

Strike price

6.805

Held after

166.53K

Exercisable

—

12/24/2025

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Common Stock

10K shares

−10K

Strike price

10.47

Held after

85.66K

Exercisable

—

12/24/2025

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Restricted Stock Unit Direct	Common Stock22.62K shares	12/23/2025	M · Option Exercise	−22.62K		—	22.62K
Restricted Stock Unit Direct	Common Stock18.79K shares	12/23/2025	M · Option Exercise	−18.79K		—	37.58K
Stock Option (Right to Buy) Direct	Common Stock20K shares	12/24/2025	M · Option Exercise	−20K	6.805	—	166.53K
Stock Option (Right to Buy) Direct	Common Stock10K shares	12/24/2025	M · Option Exercise	−10K	10.47	—	85.66K