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Ian Clark

Track

Insider profile

Currently holds positions in Genentech Inc, TerraVia Holdings Inc, Agios Pharmaceuticals Inc, Kite Pharma Inc, Tectonic Therapeutic Inc and Guardant Health Inc

Performance

Overall performance
3.9
Performance over holding periods
3.9
30 days 90 days 120 days
Average return 8% 8.2% 15.1%
Success rate 98% 68% 82%
Transactions
10 10% Buy
34 71% Buy
47 69% Buy
Ranking by holding-period performance

Positions

Position Company Period
Executive Vice President - Commercial Operations Genentech Inc Dec. 1, 2005 -
Independent Director TerraVia Holdings Inc April 1, 2011 -
Independent Director Agios Pharmaceuticals Inc Dec. 30, 2016 -
Independent Director Kite Pharma Inc Jan. 3, 2017 -
Independent Director Tectonic Therapeutic Inc Jan. 1, 2018 -
Lead Independent Director Guardant Health Inc Dec. 31, 2016 -
Independent Director Forty Seven Inc April 1, 2018 - April 7, 2020
Ian Clark's trades of Guardant Health Inc's stock


Subscribe to get access to the transaction volume chart and in-chart transaction details
• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date Company B/S Transaction type Nb. shares
Price
Value 		Number of shares Price Value Details
2026-05-22 2026-05-20
S Sale
53,275 -8.7%
222.73
US$4,944,110 		53,275 -8.7% 222.73 US$4,944,110
2026-05-20 2026-05-20
PrS Proposed sale
13,911
188.30
US$3,584,431 		13,911 188.30 US$3,584,431
2026-05-13 2026-05-13
PrS Proposed sale
89,377
118.07
US$2,841,476 		89,377 118.07 US$2,841,476
2025-12-23 2025-12-19
S Sale
41,840 -100.0%
30.48
US$1,275,283 		41,840 -100.0% 30.48 US$1,275,283
2025-12-23 2025-12-19
S Sale
193,056 -82.2%
29.71
US$5,735,694 		193,056 -82.2% 29.71 US$5,735,694
2025-12-23 2025-12-19
S Sale
29,904 -11.3%
28.83
US$862,132 		29,904 -11.3% 28.83 US$862,132
2025-12-19 2025-12-19
PrS Proposed sale
264,800
29.73
US$7,873,502 		264,800 29.73 US$7,873,502
2025-12-08 2025-12-05
S Sale
3,400 -25.7%
108.05
US$367,354 		3,400 -25.7% 108.05 US$367,354
2025-12-08 2025-12-05
S Sale
17,055 -56.3%
107.27
US$1,829,495 		17,055 -56.3% 107.27 US$1,829,495
2025-12-08 2025-12-05
S Sale
8,156 -21.2%
106.67
US$869,968 		8,156 -21.2% 106.67 US$869,968
2025-12-05 2025-12-05
PrS Proposed sale
28,611
107.19
US$3,066,818 		28,611 107.19 US$3,066,818
2025-06-20 2025-06-17
S Sale
6,672 -40.4%
48.38
US$322,819 		6,672 -40.4% 48.38 US$322,819
2025-06-17 2025-06-17
PrS Proposed sale
6,672
48.38
US$322,818 		6,672 48.38 US$322,818
2024-11-14 2024-11-12
S Sale
7,242 -46.2%
29.44
US$213,169 		7,242 -46.2% 29.44 US$213,169
2024-11-14 2024-11-12
S Sale
1,076 -6.4%
29.52
US$31,761 		1,076 -6.4% 29.52 US$31,761
2024-11-12 2024-11-12
PrS Proposed sale
8,318
29.45
US$244,930 		8,318 29.45 US$244,930
2021-11-17 2021-11-16
S Sale
100,000
0.01
£1,090 		100,000 0.01 £1,090
2021-11-05 2021-11-04
B Purchase
37,245
1.87
£69,514 		37,245 1.87 £69,514
2021-04-28 2021-04-26
PlS Planned sale
538 -10.4%
159.92
US$86,037 		538 -10.4% 159.92 US$86,037
2021-03-29 2021-03-25
PlS Planned sale
538 -10.4%
132.09
US$71,064 		538 -10.4% 132.09 US$71,064
2021-03-01 2021-02-25
PlS Planned sale
538 -10.4%
154.00
US$82,852 		538 -10.4% 154.00 US$82,852
2021-01-27 2021-01-25
PlS Planned sale
538 -10.4%
162.00
US$87,156 		538 -10.4% 162.00 US$87,156
2021-01-06 2021-01-04
PlS Planned sale
2,690 -36.7%
129.23
US$347,629 		2,690 -36.7% 129.23 US$347,629
2020-12-30 2020-12-28
PlS Planned sale
538 -10.4%
135.00
US$72,630 		538 -10.4% 135.00 US$72,630
2020-12-07 2020-12-03
PlS Planned sale
2,690 -36.7%
120.00
US$322,800 		2,690 -36.7% 120.00 US$322,800
2020-11-27 2020-11-25
PlS Planned sale
538 -10.4%
113.28
US$60,945 		538 -10.4% 113.28 US$60,945
2020-11-05 2020-11-03
PlS Planned sale
2,690 -36.7%
105.28
US$283,203 		2,690 -36.7% 105.28 US$283,203
2020-10-28 2020-10-26
PlS Planned sale
538 -10.4%
104.03
US$55,968 		538 -10.4% 104.03 US$55,968
2020-10-05 2020-10-05
PlS Planned sale
2,690 -36.7%
108.50
US$291,865 		2,690 -36.7% 108.50 US$291,865
2020-10-05 2020-09-25
PlS Planned sale
538 -10.4%
106.24
US$57,157 		538 -10.4% 106.24 US$57,157
2020-09-10 2020-09-08
PlS Planned sale
1,136 -19.7%
90.54
US$102,853 		1,136 -19.7% 90.54 US$102,853
2020-09-10 2020-09-08
PlS Planned sale
2,747 -32.2%
89.78
US$246,612 		2,747 -32.2% 89.78 US$246,612
2020-09-10 2020-09-08
PlS Planned sale
5,263 -38.2%
88.69
US$466,782 		5,263 -38.2% 88.69 US$466,782
2020-06-05 2020-06-03
PlS Planned sale
2,690 -67.4%
87.52
US$235,429 		2,690 -67.4% 87.52 US$235,429
2020-05-26 2020-05-26
PlS Planned sale
538 -29.2%
98.50
US$52,993 		538 -29.2% 98.50 US$52,993
2020-05-06 2020-05-04
PlS Planned sale
2,690 -67.4%
72.17
US$194,137 		2,690 -67.4% 72.17 US$194,137
2020-04-29 2020-04-27
PlS Planned sale
538 -29.2%
77.50
US$41,695 		538 -29.2% 77.50 US$41,695
2020-04-16 2020-04-14
PlS Planned sale
2,689 -67.4%
70.00
US$188,230 		2,689 -67.4% 70.00 US$188,230
2020-03-27 2020-03-25
PlS Planned sale
538 -29.2%
70.00
US$37,660 		538 -29.2% 70.00 US$37,660
2020-03-04 2020-03-03
PlS Planned sale
2,690 -67.4%
78.33
US$210,708 		2,690 -67.4% 78.33 US$210,708
2020-02-27 2020-02-25
PlS Planned sale
538 -29.2%
80.00
US$43,040 		538 -29.2% 80.00 US$43,040
2020-02-05 2020-02-03
PlS Planned sale
2,690 -67.4%
76.23
US$205,059 		2,690 -67.4% 76.23 US$205,059
2020-01-29 2020-01-27
PlS Planned sale
538 -29.2%
77.31
US$41,593 		538 -29.2% 77.31 US$41,593
2020-01-07 2020-01-03
PlS Planned sale
2,690 -67.4%
77.87
US$209,470 		2,690 -67.4% 77.87 US$209,470
2019-11-27 2019-11-25
PlS Planned sale
538 -29.2%
78.17
US$42,055 		538 -29.2% 78.17 US$42,055