Cox John Insider Trades

Insider Trading History

Track insider trading activity for Cox John. See latest buy and sell transactions across all companies.

Holdings

Company
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price

Insider Trades History

Company
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price
Dyne Therapeutics
Dyne Therapeutics DYN
CEO & President
Holding Value $7.46M 368,151 shares
Last Trade
Jun 16, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$49.2k 2,683 shares
$18.33
$20.26
Dyne Therapeutics
Dyne Therapeutics DYN
CEO & President
Holding Value $7.51M 370,834 shares
Last Trade
May 13, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$60.8k 3,311 shares
$18.36
$20.26
Dyne Therapeutics
Dyne Therapeutics DYN
CEO & President
Holding Value $7.58M 374,145 shares
Last Trade
Mar 05, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$40.7k 2,732 shares
$14.90
$20.26
Dyne Therapeutics
Dyne Therapeutics DYN
CEO & President
Holding Value $7.64M 376,877 shares
Last Trade
Feb 12, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$7.44M 465,000 shares
$16.00
$20.26
Dyne Therapeutics
Dyne Therapeutics DYN
CEO & President
Holding Value $3.99M 196,877 shares
Last Trade
Dec 05, 2025 Sale (Open Market)Shares sold on the open market or in a private sale.
$55.2k 2,662 shares
$20.72
$20.26
Dyne Therapeutics
Dyne Therapeutics DYN
CEO & President
Holding Value $4.04M 199,539 shares
Last Trade
Sep 05, 2025 Sale (Open Market)Shares sold on the open market or in a private sale.
$35.4k 2,640 shares
$13.41
$20.26
Dyne Therapeutics
Dyne Therapeutics DYN
CEO & President
Holding Value $4M 197,285 shares
Last Trade
Jul 16, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$1.84M 197,285 shares
$9.33
$20.26
Dyne Therapeutics
Dyne Therapeutics DYN
CEO & President
Holding Value $4.7M 232,179 shares
Last Trade
Jul 15, 2025 Sale (Gift)Shares transferred as a gift rather than bought or sold for cash.
$82.8k 10,000 shares
$8.28
$20.26
Dyne Therapeutics
Dyne Therapeutics DYN
CEO & President
Holding Value $4.91M 242,179 shares
Last Trade
Jul 14, 2025 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$911k 100,000 shares
$9.11
$20.26
Dyne Therapeutics
Dyne Therapeutics DYN
CEO & President
Holding Value $2.88M 142,179 shares
Last Trade
Jun 05, 2025 Sale (Open Market)Shares sold on the open market or in a private sale.
$54.2k 4,060 shares
$13.35
$20.26
Dyne Therapeutics
Dyne Therapeutics DYN
CEO & President
Holding Value $2.96M 146,239 shares
Last Trade
Mar 05, 2025 Sale (Open Market)Shares sold on the open market or in a private sale.
$48k 4,061 shares
$11.83
$20.26
Dyne Therapeutics
Dyne Therapeutics DYN
CEO & President
Holding Value $4.7M 232,100 shares
Last Trade
Dec 04, 2024 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$6.83M 232,100 shares
$29.44
$20.26
Dyne Therapeutics
Dyne Therapeutics DYN
CEO & President
Holding Value $162k 8,000 shares
Last Trade
Sep 04, 2024 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$264k 8,000 shares
$33.04
$20.26
Dyne Therapeutics
Dyne Therapeutics DYN
See Remarks
Holding Value $13.8M 679,853 shares
Last Trade
Mar 25, 2024 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$17.7M 679,853 shares
$26.06
$20.26
Sigilon Therapeutics
Sigilon Therapeutics SGTX
Director
Holding Value $0 0 shares
Last Trade
Aug 11, 2023 Sale (Sale to Issuer)Shares sold back to the company, such as a repurchase or tender.
$38.4k 1,707 shares
$22.47
$22.47
Sigilon Therapeutics
Sigilon Therapeutics SGTX
Director
Holding Value $200k 8,888 shares
Last Trade
May 19, 2023 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$956k 8,888 shares
$107.58
$22.47
Sigilon Therapeutics
Sigilon Therapeutics SGTX
Director
Holding Value $200k 8,888 shares
Last Trade
May 26, 2022 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$2.29M 17,776 shares
$128.98
$22.47
Sigilon Therapeutics
Sigilon Therapeutics SGTX
Director
Holding Value $200k 8,888 shares
Last Trade
Jun 24, 2021 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$15M 8,888 shares
$1,684.93
$22.47
Sigilon Therapeutics
Sigilon Therapeutics SGTX
Director
Holding Value $0 0 shares
Last Trade
Dec 08, 2020 Sale (Conversion)Shares acquired or disposed through conversion of a derivative or other security.
$23.8M 4,444 shares
$5,348.85
$22.47
Sigilon Therapeutics
Sigilon Therapeutics SGTX
Director
Holding Value $99.9k 4,444 shares
Last Trade
Dec 08, 2020 Purchase (Conversion)Shares acquired or disposed through conversion of a derivative or other security.
$23.8M 4,444 shares
$5,348.85
$22.47

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