X0306
4
2019-04-15
0
0001576280
Guardant Health, Inc.
GH
0001336504
CLARK IAN T
505 PENOBSCOT DRIVE
REDWOOD CITY
CA
94063
1
0
0
0
COMMON STOCK
2019-04-15
4
M
0
81772
4.18
A
81722
D
COMMON STOCK
2019-04-15
4
S
0
81772
73.90
D
0
D
STOCK OPTION (RIGHT TO BUY)
4.18
2019-04-15
4
M
0
72627
0
D
2027-05-31
COMMON STOCK
72627.0
56488
D
STOCK OPTION (RIGHT TO BUY)
4.18
2019-04-15
4
M
0
9145
0
D
2027-11-29
COMMON STOCK
9145.0
16678
D
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.
/s/ Michael Wiley, as attorney-in-fact for Ian Clark
2019-04-17