Cox John

Track

Insider profile

Performance

Overall performance
2.1
Performance over holding periods
2.1
30 days 90 days 120 days
Average return -1% 8.2% 15.1%
Success rate 24% 68% 82%
Transactions
16 56% Buy
34 71% Buy
47 69% Buy
Ranking by holding-period performance
Cox John's trades of Dyne Therapeutics Inc's stock


• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Transaction date
Proposed sale
Price
185.39
Quantity 69,179
Value US$1,408,900
Transaction date
Planned sale
Price
188.48
Quantity 26,097 -43.1%
Value US$1,270,566
Transaction date
Planned sale
Price
23.59
Quantity 65,130 +1.4%
Value US$535,256
Transaction date
Proposed sale
Price
26.28
Quantity 4,986
Value US$131,034
Transaction date
Proposed sale
Price
18.33
Quantity 2,683
Value US$49,191
Transaction date
Proposed sale
Price
18.36
Quantity 3,311
Value US$60,805
Transaction date
Proposed sale
Price
14.90
Quantity 2,732
Value US$40,707
Transaction date
Proposed sale
Price
20.72
Quantity 2,662
Value US$55,150
Transaction date
Proposed sale
Price
13.41
Quantity 2,640
Value US$35,404
Transaction date
Proposed sale
Price
13.35
Quantity 4,060
Value US$54,186
Transaction date
Proposed sale
Price
11.89
Quantity 4,067
Value US$48,356
US Repligen Corp (RGEN)
Transaction date
Sale
Price
96.72
Quantity 1,858 -66.8%
Value US$179,706
US Repligen Corp (RGEN)
Transaction date
Sale
Price
97.17
Quantity 1,016 -26.8%
Value US$98,725
US Repligen Corp (RGEN)
Transaction date
Sale
Price
96.45
Quantity 1,187 -23.8%
Value US$114,486
US Repligen Corp (RGEN)
Transaction date
Sale
Price
95.13
Quantity 24,533 -83.1%
Value US$2,333,824
US Repligen Corp (RGEN)
Transaction date
Sale
Price
93.39
Quantity 10,000 -78.2%
Value US$933,900
US Repligen Corp (RGEN)
Transaction date
Sale
Price
92.76
Quantity 4,355 -61.0%
Value US$403,970
US Repligen Corp (RGEN)
Transaction date
Sale
Price
94.85
Quantity 100 -1.4%
Value US$9,485
Notification date Transaction date Company B/S Transaction type Nb. shares
Price
Value 		Number of shares Price Value Details
2026-09-08 2026-09-08
PrS Proposed sale
69,179
185.39
US$1,408,900 		69,179 185.39 US$1,408,900
2026-09-08 2026-09-08
PlS Planned sale
26,097 -43.1%
188.48
US$1,270,566 		26,097 -43.1% 188.48 US$1,270,566
2026-08-17 2026-08-13
PlS Planned sale
65,130 +1.4%
23.59
US$535,256 		65,130 +1.4% 23.59 US$535,256
2026-08-13 2026-08-13
PrS Proposed sale
4,986
26.28
US$131,034 		4,986 26.28 US$131,034
2026-06-17 2026-06-16
PlS Planned sale
2,683 -0.7%
18.33
US$49,179 		2,683 -0.7% 18.33 US$49,179
2026-06-16 2026-06-16
PrS Proposed sale
2,683
18.33
US$49,191 		2,683 18.33 US$49,191
2026-05-14 2026-05-13
PlS Planned sale
3,311 -0.9%
18.36
US$60,790 		3,311 -0.9% 18.36 US$60,790
2026-05-13 2026-05-13
PrS Proposed sale
3,311
18.36
US$60,805 		3,311 18.36 US$60,805
2026-03-06 2026-03-05
PlS Planned sale
2,732 -0.7%
14.90
US$40,707 		2,732 -0.7% 14.90 US$40,707
2026-03-05 2026-03-05
PrS Proposed sale
2,732
14.90
US$40,707 		2,732 14.90 US$40,707
2025-12-05 2025-12-05
PrS Proposed sale
2,662
20.72
US$55,150 		2,662 20.72 US$55,150
2025-12-05 2025-12-05
PlS Planned sale
2,662 -1.3%
20.72
US$55,157 		2,662 -1.3% 20.72 US$55,157
2025-09-09 2025-09-05
PlS Planned sale
2,640 -1.3%
13.41
US$35,402 		2,640 -1.3% 13.41 US$35,402
2025-09-05 2025-09-05
PrS Proposed sale
2,640
13.41
US$35,404 		2,640 13.41 US$35,404
2025-07-15 2025-07-14
B Purchase
100,000 +70.3%
9.11
US$911,000 		100,000 +70.3% 9.11 US$911,000
2025-06-06 2025-06-05
PlS Planned sale
4,060 -2.8%
13.35
US$54,201 		4,060 -2.8% 13.35 US$54,201
2025-06-05 2025-06-05
PrS Proposed sale
4,060
13.35
US$54,186 		4,060 13.35 US$54,186
2025-03-07 2025-03-05
PlS Planned sale
4,061 -2.7%
11.83
US$48,042 		4,061 -2.7% 11.83 US$48,042
2025-03-05 2025-03-05
PrS Proposed sale
4,067
11.89
US$48,356 		4,067 11.89 US$48,356
2024-09-04 2024-09-04
B Purchase
7,200 +900.0%
33.09
US$238,248 		7,200 +900.0% 33.09 US$238,248
2024-09-04 2024-09-04
B Purchase
800 +inf%
32.57
US$26,056 		800 +inf% 32.57 US$26,056
2024-09-04 2024-09-04
B Purchase
7,200 +900.0%
33.09
US$238,248 		7,200 +900.0% 33.09 US$238,248
2024-09-04 2024-09-04
B Purchase
800 +inf%
32.57
US$26,056 		800 +inf% 32.57 US$26,056
2024-09-04 2024-09-04
B Purchase
7,200 +900.0%
33.09
US$238,248 		7,200 +900.0% 33.09 US$238,248
2024-09-04 2024-09-04
B Purchase
800 +inf%
32.57
US$26,056 		800 +inf% 32.57 US$26,056
2024-09-04 2024-09-04
B Purchase
7,200 +900.0%
33.09
US$238,248 		7,200 +900.0% 33.09 US$238,248
2024-09-04 2024-09-04
B Purchase
800 +inf%
32.57
US$26,056 		800 +inf% 32.57 US$26,056
2020-03-26 2020-03-24
US Repligen Corp (RGEN)
S Sale
1,858 -66.8%
96.72
US$179,706 		1,858 -66.8% 96.72 US$179,706
2020-03-20 2020-03-18
US Repligen Corp (RGEN)
S Sale
1,016 -26.8%
97.17
US$98,725 		1,016 -26.8% 97.17 US$98,725
2020-03-20 2020-03-18
US Repligen Corp (RGEN)
S Sale
1,187 -23.8%
96.45
US$114,486 		1,187 -23.8% 96.45 US$114,486
2020-03-20 2020-03-18
US Repligen Corp (RGEN)
S Sale
24,533 -83.1%
95.13
US$2,333,824 		24,533 -83.1% 95.13 US$2,333,824
2020-03-05 2020-03-04
US Repligen Corp (RGEN)
S Sale
10,000 -78.2%
93.39
US$933,900 		10,000 -78.2% 93.39 US$933,900
2020-02-26 2020-02-24
US Repligen Corp (RGEN)
S Sale
4,355 -61.0%
92.76
US$403,970 		4,355 -61.0% 92.76 US$403,970
2020-02-26 2020-02-24
US Repligen Corp (RGEN)
S Sale
100 -1.4%
94.85
US$9,485 		100 -1.4% 94.85 US$9,485