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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1576280	Guardant Health Inc.	GH	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1336504	T Ian Clark	505 Penobscot Drive Redwood City CA 94063		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2019-04-15	81,772	$4.18	81,722	No	4	M	Direct
Common Stock	Disposition	2019-04-15	81,772	$73.90	0	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	STOCK OPTION (RIGHT TO BUY)	Disposition	2019-04-15	72,627	$0.00	72,627	$4.18
Common Stock	STOCK OPTION (RIGHT TO BUY)	Disposition	2019-04-15	9,145	$0.00	9,145	$4.18

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
56,488		2027-05-31	No	4	M	Direct
16,678		2027-11-29	No	4	M	Direct

Footnotes

These shares were sold under a pre-arranged sales plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended. The shares sold were acquired contemporaneously upon the cashless exercise of stock options at an exercise price of $4.18 per share.
The exercise price of $4.17 reported in the Reporting Person's Form 3 filed on October 3, 2018 was in error.
The stock option vests and becomes exercisable in equal monthly installments over 48 months commencing on January 3, 2017.
The stock option vests and becomes exercisable in equal monthly installments over 48 months commencing on October 25, 2017.