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Home›DYN›Insider trades
OverviewCallFinancialsInsidersETFsFTD
Insider trading · SEC Form 4

Dyne Therapeutics Inc (DYN) insider trading — SEC Form 4 history

As of the latest Form 4 filed Jul 8, 2026.

Our verdictAvoid→

What Dyne Therapeutics Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.

Insider buys · 12m
7
Insider sells · 12m
102
Distinct insiders · 12m
8
Last sale
Jul 8, 2026
5 days ago
Bought · 12m
$275K
Sold · 12m
$96.2M
Net disclosed value · 12m
−$95.9M

Insider buying vs selling

Buy / sell pressure · 12m
by trade count
7 up102 down
Disclosed value by month
BoughtSold
$50.0M0$50.0MMar '26May '26Jul '26

Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.

Form 4 transactions

Newest filing first — the 114 most recent filings for DYN.

Form 4 insider transactions for DYN
FiledTrade dateInsiderTransactionSharesPriceValue10b5-1Filing
2026-07-082026-07-07
Rhodes Jason P
Director
SSale−5.00K$23.61$118KYes (planned)Form 4 ↗
2026-07-082026-07-07Rhodes Jason P, Director〃SSale−11.7K$23.62$276KYes (planned)Form 4 ↗
2026-07-082026-07-07Rhodes Jason P, Director〃SSale−49.2K$23.17$1.14MYes (planned)Form 4 ↗
2026-07-082026-07-07Rhodes Jason P, Director〃SSale−14.8K$23.62$351KYes (planned)Form 4 ↗
2026-07-082026-07-07Rhodes Jason P, Director〃SSale−62.5K$23.17$1.45MYes (planned)Form 4 ↗
2026-07-082026-07-07Rhodes Jason P, Director〃SSale−29.6K$23.62$699KYes (planned)Form 4 ↗
2026-07-082026-07-07Rhodes Jason P, Director〃SSale−124K$23.17$2.88MYes (planned)Form 4 ↗
2026-07-082026-07-06Rhodes Jason P, Director〃SSale−100K$22.79$2.28MYes (planned)Form 4 ↗
2026-07-082026-07-06Rhodes Jason P, Director〃SSale−127K$22.79$2.90MYes (planned)Form 4 ↗
2026-07-082026-07-06Rhodes Jason P, Director〃SSale−253K$22.79$5.77MYes (planned)Form 4 ↗
2026-06-302026-06-29
Rhodes Jason P
Director
SSale−40.7K$21.14$860KYes (planned)Form 4 ↗
2026-06-302026-06-29Rhodes Jason P, Director〃SSale−51.8K$21.14$1.09MYes (planned)Form 4 ↗
2026-06-302026-06-29Rhodes Jason P, Director〃SSale−103K$21.14$2.18MYes (planned)Form 4 ↗
2026-06-302026-06-26Rhodes Jason P, Director〃SSale−64.4K$21.28$1.37MYes (planned)Form 4 ↗
2026-06-302026-06-26Rhodes Jason P, Director〃SSale−81.9K$21.28$1.74MYes (planned)Form 4 ↗
2026-06-302026-06-26Rhodes Jason P, Director〃SSale−163K$21.28$3.47MYes (planned)Form 4 ↗
2026-06-262026-06-25
Rhodes Jason P
Director
SSale−5.02K$21.10$106KYes (planned)Form 4 ↗
2026-06-262026-06-25Rhodes Jason P, Director〃SSale−6.38K$21.10$135KYes (planned)Form 4 ↗
2026-06-262026-06-25Rhodes Jason P, Director〃SSale−12.7K$21.10$268KYes (planned)Form 4 ↗
2026-06-262026-06-25
Lucera Erick
Chief Financial Officer
SSale−2.36K$20.37$48.1KNoForm 4 ↗
2026-06-262026-06-24
Rhodes Jason P
Director
SSale−20.0K$21.02$420KYes (planned)Form 4 ↗
2026-06-262026-06-24Rhodes Jason P, Director〃SSale−25.4K$21.02$534KYes (planned)Form 4 ↗
2026-06-262026-06-24Rhodes Jason P, Director〃SSale−50.5K$21.02$1.06MYes (planned)Form 4 ↗
2026-06-262026-06-23Rhodes Jason P, Director〃SSale−30.8K$21.13$650KYes (planned)Form 4 ↗
2026-06-262026-06-23Rhodes Jason P, Director〃SSale−39.1K$21.13$827KYes (planned)Form 4 ↗
2026-06-262026-06-23Rhodes Jason P, Director〃SSale−77.9K$21.13$1.65MYes (planned)Form 4 ↗
2026-06-242026-06-23
Kersten Dirk
Director
SSale−1.66K$21.47$35.6KYes (planned)Form 4 ↗
2026-06-242026-06-23Kersten Dirk, Director〃SSale−71.6K$21.04$1.51MYes (planned)Form 4 ↗
2026-06-242026-06-22Kersten Dirk, Director〃SSale−191K$20.57$3.92MYes (planned)Form 4 ↗
2026-06-222026-06-18
Kersten Dirk
Director
SSale−46.9K$20.07$941KYes (planned)Form 4 ↗
2026-06-222026-06-17Kersten Dirk, Director〃SSale−37.5K$20.14$754KYes (planned)Form 4 ↗
2026-06-172026-06-16
Friedl-Naderer Johanna
Chief Commercial Officer
SSale−145.00$18.33$2.66KYes (planned)Form 4 ↗
2026-06-172026-06-16
Kerr Douglas
Chief Medical Officer
SSale−887.00$18.33$16.3KYes (planned)Form 4 ↗
2026-06-172026-06-16
Cox John
CEO & President
SSale−2.68K$18.33$49.2KYes (planned)Form 4 ↗
2026-06-092026-06-08
Posner Brian S
Director
PPurchase+2.00K$16.94$33.9KNoForm 4 ↗
2026-06-052026-06-03
Posner Brian S
Director
PPurchase+2.50K$17.48$43.7KNoForm 4 ↗
2026-05-282026-05-26
Posner Brian S
Director
PPurchase+2.00K$18.21$36.4KNoForm 4 ↗
2026-05-222026-05-20
Posner Brian S
Director
PPurchase+2.50K$17.12$42.8KNoForm 4 ↗
2026-05-142026-05-13
Friedl-Naderer Johanna
Chief Commercial Officer
SSale−228.00$18.36$4.19KYes (planned)Form 4 ↗
2026-05-142026-05-13
Kerr Douglas
Chief Medical Officer
SSale−1.56K$18.36$28.7KYes (planned)Form 4 ↗
2026-05-142026-05-13
Lucera Erick
Chief Financial Officer
SSale−1.45K$18.36$26.6KYes (planned)Form 4 ↗
2026-05-142026-05-13
Cox John
CEO & President
SSale−3.31K$18.36$60.8KYes (planned)Form 4 ↗
2026-05-062026-05-06
Rhodes Jason P
Director
SSale−17.2K$18.18$313KYes (planned)Form 4 ↗
2026-05-062026-05-06Rhodes Jason P, Director〃SSale−428.00$18.18$7.78KYes (planned)Form 4 ↗
2026-05-062026-05-06Rhodes Jason P, Director〃SSale−43.6K$18.18$793KYes (planned)Form 4 ↗
2026-05-062026-05-06Rhodes Jason P, Director〃SSale−21.9K$18.18$399KYes (planned)Form 4 ↗
2026-05-062026-05-05Rhodes Jason P, Director〃SSale−2.40K$18.03$43.3KYes (planned)Form 4 ↗
2026-05-062026-05-05Rhodes Jason P, Director〃SSale−60.00$18.03$1.08KYes (planned)Form 4 ↗
2026-05-062026-05-05Rhodes Jason P, Director〃SSale−6.08K$18.03$110KYes (planned)Form 4 ↗
2026-05-062026-05-05Rhodes Jason P, Director〃SSale−3.06K$18.03$55.1KYes (planned)Form 4 ↗
2026-05-062026-05-04Rhodes Jason P, Director〃SSale−2.47K$18.00$44.4KYes (planned)Form 4 ↗
2026-05-062026-05-04Rhodes Jason P, Director〃SSale−61.00$18.00$1.10KYes (planned)Form 4 ↗
2026-05-062026-05-04Rhodes Jason P, Director〃SSale−6.24K$18.00$112KYes (planned)Form 4 ↗
2026-05-062026-05-04Rhodes Jason P, Director〃SSale−3.14K$18.00$56.4KYes (planned)Form 4 ↗
2026-04-302026-04-28
Rhodes Jason P
Director
SSale−21.00$19.00$399.00Yes (planned)Form 4 ↗
2026-04-302026-04-28Rhodes Jason P, Director〃SSale−1.00$19.00$19.00Yes (planned)Form 4 ↗
2026-04-302026-04-28Rhodes Jason P, Director〃SSale−52.00$19.00$988.00Yes (planned)Form 4 ↗
2026-04-302026-04-28Rhodes Jason P, Director〃SSale−26.00$19.00$494.00Yes (planned)Form 4 ↗
2026-04-302026-04-28Rhodes Jason P, Director〃SSale−47.1K$18.38$865KYes (planned)Form 4 ↗
2026-04-302026-04-28Rhodes Jason P, Director〃SSale−1.17K$18.38$21.5KYes (planned)Form 4 ↗
2026-04-302026-04-28Rhodes Jason P, Director〃SSale−119K$18.38$2.19MYes (planned)Form 4 ↗
2026-04-302026-04-28Rhodes Jason P, Director〃SSale−59.9K$18.38$1.10MYes (planned)Form 4 ↗
2026-04-282026-04-24
Lubner David Charles
Director
GGift−53.6K$0.00$0.00NoForm 4 ↗
2026-04-272026-04-27
Rhodes Jason P
Director
SSale−35.9K$18.15$652KYes (planned)Form 4 ↗
2026-04-272026-04-27Rhodes Jason P, Director〃SSale−894.00$18.15$16.2KYes (planned)Form 4 ↗
2026-04-272026-04-27Rhodes Jason P, Director〃SSale−90.9K$18.15$1.65MYes (planned)Form 4 ↗
2026-04-272026-04-27Rhodes Jason P, Director〃SSale−45.7K$18.15$830KYes (planned)Form 4 ↗
2026-04-272026-04-24Rhodes Jason P, Director〃SSale−28.6K$18.48$528KYes (planned)Form 4 ↗
2026-04-272026-04-24Rhodes Jason P, Director〃SSale−710.00$18.48$13.1KYes (planned)Form 4 ↗
2026-04-272026-04-24Rhodes Jason P, Director〃SSale−72.3K$18.48$1.34MYes (planned)Form 4 ↗
2026-04-272026-04-24Rhodes Jason P, Director〃SSale−36.3K$18.48$672KYes (planned)Form 4 ↗
2026-04-272026-04-23Rhodes Jason P, Director〃SSale−15.1K$19.19$291KYes (planned)Form 4 ↗
2026-04-272026-04-23Rhodes Jason P, Director〃SSale−377.00$19.19$7.23KYes (planned)Form 4 ↗
2026-04-272026-04-23Rhodes Jason P, Director〃SSale−38.3K$19.19$735KYes (planned)Form 4 ↗
2026-04-272026-04-23Rhodes Jason P, Director〃SSale−19.3K$19.19$370KYes (planned)Form 4 ↗
2026-04-232026-04-22
Kersten Dirk
Director
SSale−2.65K$20.00$53.0KYes (planned)Form 4 ↗
2026-04-232026-04-21Kersten Dirk, Director〃SSale−8.30K$20.01$166KYes (planned)Form 4 ↗
2026-04-222026-04-22
Rhodes Jason P
Director
SSale−59.7K$19.68$1.17MYes (planned)Form 4 ↗
2026-04-222026-04-22Rhodes Jason P, Director〃SSale−1.49K$19.68$29.2KYes (planned)Form 4 ↗
2026-04-222026-04-22Rhodes Jason P, Director〃SSale−151K$19.68$2.97MYes (planned)Form 4 ↗
2026-04-222026-04-22Rhodes Jason P, Director〃SSale−75.9K$19.68$1.49MYes (planned)Form 4 ↗
2026-04-222026-04-21Rhodes Jason P, Director〃SSale−605.00$20.05$12.1KYes (planned)Form 4 ↗
2026-04-222026-04-21Rhodes Jason P, Director〃SSale−15.00$20.05$300.75Yes (planned)Form 4 ↗
2026-04-222026-04-21Rhodes Jason P, Director〃SSale−1.53K$20.05$30.7KYes (planned)Form 4 ↗
2026-04-222026-04-21Rhodes Jason P, Director〃SSale−769.00$20.05$15.4KYes (planned)Form 4 ↗
2026-04-222026-04-21Rhodes Jason P, Director〃SSale−56.2K$19.51$1.10MYes (planned)Form 4 ↗
2026-04-222026-04-21Rhodes Jason P, Director〃SSale−1.40K$19.51$27.3KYes (planned)Form 4 ↗
2026-04-222026-04-21Rhodes Jason P, Director〃SSale−142K$19.51$2.78MYes (planned)Form 4 ↗
2026-04-222026-04-21Rhodes Jason P, Director〃SSale−71.5K$19.51$1.39MYes (planned)Form 4 ↗
2026-04-222026-04-20Rhodes Jason P, Director〃SSale−56.4K$20.06$1.13MYes (planned)Form 4 ↗
2026-04-222026-04-20Rhodes Jason P, Director〃SSale−1.40K$20.06$28.1KYes (planned)Form 4 ↗
2026-04-222026-04-20Rhodes Jason P, Director〃SSale−143K$20.06$2.86MYes (planned)Form 4 ↗
2026-04-222026-04-20Rhodes Jason P, Director〃SSale−71.7K$20.06$1.44MYes (planned)Form 4 ↗
2026-04-212026-04-20
Kersten Dirk
Director
SSale−125K$20.07$2.51MYes (planned)Form 4 ↗
2026-04-212026-04-17Kersten Dirk, Director〃SSale−212K$20.29$4.30MYes (planned)Form 4 ↗
2026-04-172026-04-16
Kersten Dirk
Director
SSale−6.66K$20.06$134KYes (planned)Form 4 ↗
2026-04-172026-04-16Kersten Dirk, Director〃SSale−11.1K$21.10$235KYes (planned)Form 4 ↗
2026-04-172026-04-15Kersten Dirk, Director〃SSale−81.8K$20.27$1.66MYes (planned)Form 4 ↗
2026-04-032026-04-01
Lucera Erick
Chief Financial Officer
SSale−5.73K$18.64$107KYes (planned)Form 4 ↗
2026-04-012026-03-30
Posner Brian S
Director
PPurchase+2.00K$17.08$34.2KNoForm 4 ↗
2026-03-132026-03-11
Posner Brian S
Director
PPurchase+2.00K$19.35$38.7KNoForm 4 ↗
2026-03-132026-03-11
Kersten Dirk
Director
SSale−130K$19.52$2.53MYes (planned)Form 4 ↗
2026-03-112026-03-10
Kersten Dirk
Director
SSale−282K$19.80$5.58MYes (planned)Form 4 ↗
2026-03-112026-03-10Kersten Dirk, Director〃SSale−220K$19.33$4.25MYes (planned)Form 4 ↗
2026-03-112026-03-10Kersten Dirk, Director〃SSale−9.48K$18.21$173KYes (planned)Form 4 ↗
2026-03-112026-03-09Kersten Dirk, Director〃SSale−178K$17.72$3.15MYes (planned)Form 4 ↗
2026-03-102026-03-06
Posner Brian S
Director
PPurchase+3.00K$15.06$45.2KNoForm 4 ↗
2026-03-062026-03-05
Friedl-Naderer Johanna
Chief Commercial Officer
SSale−148.00$14.90$2.21KYes (planned)Form 4 ↗
2026-03-062026-03-05
Kerr Douglas
Chief Medical Officer
SSale−904.00$14.90$13.5KYes (planned)Form 4 ↗
2026-03-062026-03-05
Cox John
CEO & President
SSale−2.73K$14.90$40.7KYes (planned)Form 4 ↗
2026-02-172026-02-12
Cox John
CEO & President
AAward+180K$0.00$0.00NoForm 4 ↗
2026-02-172026-02-12
Kerr Douglas
Chief Medical Officer
AAward+85.0K$0.00$0.00NoForm 4 ↗
2026-02-172026-02-12
Friedl-Naderer Johanna
Chief Commercial Officer
AAward+60.0K$0.00$0.00NoForm 4 ↗
2026-02-172026-02-12
Lucera Erick
Chief Financial Officer
AAward+65.0K$0.00$0.00NoForm 4 ↗

How to read a Form 4

Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.

The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.

One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.

See also DYN’s full analysis or the market-wide insider trading feed. The tabs above jump to DYN’s other SEC data.

Source: SEC Form 4 filings for DYN, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.

Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.

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NVDA$203.53▼3.52%AAPL$317.31▲0.63%GOOGL$352.51▼1.31%GOOG$350.67▼1.23%MSFT$390.99▲1.53%AMZN$247.31▲0.80%TSM$421.58▼2.89%SPCX$139.14▼4.24%AVGO$384.05▼3.98%META$656.73▼1.86%TSLA$394.76▼3.19%MU$937.00▼4.32%BRK-B$496.85▲0.64%BRK-A$744,850.01▲0.69%LLY$1,181.87▼0.56%AMD$534.39▼4.21%WMT$114.78▲0.77%JPM$334.53▼0.58%ASML$1,726.04▼3.97%V$357.75▲2.52%JNJ$257.77▲0.31%XOM$144.51▲4.05%INTC$103.12▼6.12%AMAT$575.39▼4.50%CSCO$119.25▼1.70%MA$537.70▲2.08%CAT$931.47▼2.20%ABBV$248.00▼0.03%LRCX$329.92▼5.83%BAC$59.50▼0.28%
NVDA$203.53▼3.52%AAPL$317.31▲0.63%GOOGL$352.51▼1.31%GOOG$350.67▼1.23%MSFT$390.99▲1.53%AMZN$247.31▲0.80%TSM$421.58▼2.89%SPCX$139.14▼4.24%AVGO$384.05▼3.98%META$656.73▼1.86%TSLA$394.76▼3.19%MU$937.00▼4.32%BRK-B$496.85▲0.64%BRK-A$744,850.01▲0.69%LLY$1,181.87▼0.56%AMD$534.39▼4.21%WMT$114.78▲0.77%JPM$334.53▼0.58%ASML$1,726.04▼3.97%V$357.75▲2.52%JNJ$257.77▲0.31%XOM$144.51▲4.05%INTC$103.12▼6.12%AMAT$575.39▼4.50%CSCO$119.25▼1.70%MA$537.70▲2.08%CAT$931.47▼2.20%ABBV$248.00▼0.03%LRCX$329.92▼5.83%BAC$59.50▼0.28%