John Cox Receives Stock Award at Dyne Therapeutics Inc (DYN) — SEC Form 4, Feb 17, 2026
SEC Form 4 · No Market Transaction
Stock Award
Compensation grant — no market purchase or sale.
Equity Position
449K sh
268,877 → 448,877
Equity Change
+67.0%
shares held after vs before
Filing Lag
2 business days
within 2-day SEC deadline
Form 4 · Statement of Changes in Beneficial Ownership
Reporting Owner
| Name | Relationship |
|---|---|
| John Cox CIK 0001498428 |
Director
CEO
|
John Cox at Dyne Therapeutics Inc
Full insider history
Bought (12 mo)
—
Sold (12 mo)
$443,688
More from this insider at Dyne Therapeutics Inc
| 2026-09-08 | Sell | -$106,823 | View |
| 2026-08-17 | Sell | -$131,032 | View |
| 2026-06-17 | Sell | -$49,179 | View |
| 2026-05-14 | Sell | -$60,790 | View |
| 2026-03-06 | Sell | -$40,707 | View |
Non-Derivative Securities Transactions
Derivative Securities Transactions
| Title | Strike | Date | Type | Shares | Price | Expiration | Underlying | Ownership |
|---|---|---|---|---|---|---|---|---|
| Stock option (right to buy)F4 | $16.00 | 2026-02-12 | A - Award/Grant | 285,000 A | $0.00 | 2036-02-11 | 285,000 Common Stock | Direct |
Footnotes (4)
- F1
- Consists of shares of Common Stock issuable under 180,000 restricted stock units ("RSUs"). Each RSU represents the right to receive one share of Common Stock upon vesting. These RSUs are scheduled to vest in equal quarterly installments over four years with the first installment vesting on May 12, 2026. Show more
- F2
- Includes 288,976 unvested RSUs. Show more
- F3
- These shares are held in a trust for the benefit of a child of the Reporting Person. Show more
- F4
- This option was granted on February 12, 2026. The shares underlying the option are scheduled to vest over four years in equal monthly installments through February 12, 2030. Show more
Related filings at Dyne Therapeutics Inc
Institutional Holders
13F holders · Jun 30, 2026
247
institutional managers reporting a position
Largest by reported value
- T. Rowe Price Investment Management, Inc. $687M
- Black Rock, Inc. $276M
- Jupiter Topco Llc $267M
5%+ Holders · 13D/G
4 filers
-
Fmr Llc 6.8%
-
Black Rock, Inc. 7.0%
Other insiders at Dyne Therapeutics Inc
-
Brian S Posner +$40K
-
Johanna Friedl-Naderer -$25.4K
-
Douglas Kerr -$116K
-
Jason P Rhodes -$65.2M
GET /v1/forms/4/0001193125-26-055075
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