SAIA JOHN G. (See Remarks) exercised options at GUARDANT HEALTH, INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 4 exercises

SAIA JOHN G.

Filed: 4/2/2026ACC: 0001737840-26-000008

InsiderSAIA JOHN G.CIK 1737840

→

IssuerGUARDANT HEALTH, INC.CIK 1576280

Officer· See Remarks

Since May 2020

-6.01K

Net shares

Net seller

$548.1K

Total sold

Open market trades

0B · 0S

Total transactions

11.46K acquired · 17.47K disposed

Non-Derivative Transactions5

Common Stock

Direct

M · Option Exercise

+974.00

Price / share

—

Trade value

—

% of position

1.7%

4/1/2026

56.90K→57.88K

Common Stock

Direct

M · Option Exercise

+1.67K

Price / share

—

Trade value

—

% of position

2.9%

4/1/2026

57.88K→59.54K

Common Stock

Direct

M · Option Exercise

+2.92K

Price / share

—

Trade value

—

% of position

4.9%

4/1/2026

59.54K→62.47K

Common Stock

Direct

M · Option Exercise

+5.89K

Price / share

—

Trade value

—

% of position

9.4%

4/1/2026

62.47K→68.36K

Common Stock

Direct

F · Tax Withholding

−6.01K

Price / share

$91.15

Trade value

$548.08K

% of position

8.8%

4/1/2026

68.36K→62.35K

Total

Net shares

+5.45K

Net value

-$548.08K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	4/1/2026	M · Option Exercise	+974.00	—	—	1.7%	56.90K	57.88K
Common Stock Direct	4/1/2026	M · Option Exercise	+1.67K	—	—	2.9%	57.88K	59.54K
Common Stock Direct	4/1/2026	M · Option Exercise	+2.92K	—	—	4.9%	59.54K	62.47K
Common Stock Direct	4/1/2026	M · Option Exercise	+5.89K	—	—	9.4%	62.47K	68.36K
Common Stock Direct	4/1/2026	F · Tax Withholding	−6.01K	$91.15	$548.08K	8.8%	68.36K	62.35K
Total			+5.45K		-$548.08K

Derivative Transactions4

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

974.00 shares

−974.00

Strike price

Held after

1.95K

Exercisable

—

4/1/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

1.67K shares

−1.67K

Strike price

Held after

3.33K

Exercisable

—

4/1/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

2.92K shares

−2.92K

Strike price

Held after

17.55K

Exercisable

—

4/1/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

5.89K shares

−5.89K

Strike price

Held after

11.97K

Exercisable

—

4/1/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Direct	Common Stock974.00 shares	4/1/2026	M · Option Exercise	−974.00	—	1.95K
Restricted Stock Units Direct	Common Stock1.67K shares	4/1/2026	M · Option Exercise	−1.67K	—	3.33K
Restricted Stock Units Direct	Common Stock2.92K shares	4/1/2026	M · Option Exercise	−2.92K	—	17.55K
Restricted Stock Units Direct	Common Stock5.89K shares	4/1/2026	M · Option Exercise	−5.89K	—	11.97K