Cox John has been a registered insider at 3 firms since 2010.
As Chief Executive Officer at Dyne Therapeutics, Inc., Cox John last made a transaction on 8/13/2026.
As a Director at Repligen Corporation, Cox John last made a transaction on 3/24/2020.
As an Operating Officer at Biogen IDEC Inc, Cox John last made a transaction on 3/25/2015.
InsiderInsights.com Purchase Scorecard
|
|
|
Transaction Date
|
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
Time From
Purchases
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
| 2 |
50% |
64% |
64% |
251 |
1 Year |
2 |
0% |
-- |
-- |
-- |
| 2 |
50% |
40% |
40% |
198 |
9 Month |
2 |
0% |
-- |
-- |
-- |
| 2 |
50% |
21% |
21% |
170 |
6 Month |
2 |
0% |
-- |
-- |
-- |
| 2 |
50% |
37% |
37% |
99 |
3 Month |
2 |
0% |
-- |
-- |
-- |
| 2 |
50% |
24% |
24% |
54 |
1 Month |
2 |
0% |
-- |
-- |
-- |
| 2 |
50% |
4% |
4% |
15 |
1 Week |
2 |
0% |
-- |
-- |
-- |
InsiderInsights.com Sales Scorecard
|
|
|
Transaction Date
|
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
Time From
Sales
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
| 3 |
0% |
40% |
20% |
67 |
1 Year |
3 |
0% |
-- |
-- |
-- |
| 4 |
0% |
30% |
27% |
62 |
9 Month |
4 |
0% |
-- |
-- |
-- |
| 5 |
20% |
30% |
38% |
79 |
6 Month |
5 |
0% |
-- |
-- |
-- |
| 6 |
33% |
14% |
17% |
69 |
3 Month |
6 |
0% |
-- |
-- |
-- |
| 7 |
57% |
-4% |
-0% |
64 |
1 Month |
8 |
0% |
-- |
-- |
-- |
| 8 |
75% |
1% |
-2% |
26 |
1 Week |
8 |
0% |
-- |
-- |
-- |
| Scorecards Updated 9/9/2026 01:00 AM EST |
Latest Transaction Date: |
8/13/2026 |
| Average days between Transaction and Entered Dates: |
2 |
InsiderInsights.com Purchase Scorecard
|
|
|
Transaction Date
|
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
Time From
Purchases
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
| -- |
-- |
-- |
-- |
-- |
1 Year |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
9 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
6 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
3 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
1 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
1 Week |
-- |
-- |
-- |
-- |
-- |
InsiderInsights.com Sales Scorecard
|
|
|
Transaction Date
|
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
Time From
Sales
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
| 4 |
0% |
120% |
115% |
51 |
1 Year |
4 |
0% |
-- |
-- |
-- |
| 4 |
0% |
111% |
114% |
19 |
9 Month |
4 |
0% |
-- |
-- |
-- |
| 4 |
0% |
63% |
61% |
22 |
6 Month |
4 |
0% |
-- |
-- |
-- |
| 4 |
0% |
34% |
30% |
25 |
3 Month |
4 |
0% |
-- |
-- |
-- |
| 4 |
0% |
15% |
14% |
23 |
1 Month |
4 |
0% |
-- |
-- |
-- |
| 4 |
25% |
4% |
5% |
15 |
1 Week |
4 |
0% |
-- |
-- |
-- |
| Scorecards Updated 9/9/2026 01:00 AM EST |
Latest Transaction Date: |
3/24/2020 |
| Average days between Transaction and Entered Dates: |
2 |
InsiderInsights.com Purchase Scorecard
|
|
|
Transaction Date
|
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
Time From
Purchases
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
| -- |
-- |
-- |
-- |
-- |
1 Year |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
9 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
6 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
3 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
1 Month |
-- |
-- |
-- |
-- |
-- |
| -- |
-- |
-- |
-- |
-- |
1 Week |
-- |
-- |
-- |
-- |
-- |
InsiderInsights.com Sales Scorecard
|
|
|
Transaction Date
|
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
Time From
Sales
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
| 12 |
8% |
50% |
61% |
130 |
1 Year |
12 |
0% |
-- |
-- |
-- |
| 12 |
8% |
37% |
41% |
93 |
9 Month |
12 |
0% |
-- |
-- |
-- |
| 12 |
8% |
26% |
26% |
87 |
6 Month |
12 |
0% |
-- |
-- |
-- |
| 12 |
8% |
17% |
6% |
53 |
3 Month |
12 |
0% |
-- |
-- |
-- |
| 12 |
33% |
6% |
2% |
40 |
1 Month |
12 |
0% |
-- |
-- |
-- |
| 12 |
42% |
2% |
0% |
24 |
1 Week |
12 |
0% |
-- |
-- |
-- |
| Scorecards Updated 9/9/2026 01:00 AM EST |
Latest Transaction Date: |
3/25/2015 |
| Average days between Transaction and Entered Dates: |
2 |
