Transaction · 0001577014-26-000016

Rhodes Jason P

Rhodes Jason P, DIR, reported an open-market or private sale at Dyne Therapeutics, Inc. involving 1359674.000000 shares for an estimated $33991850.00. Reported holdings after the transaction were 2441454.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SDIR
DYNDyne Therapeutics, Inc.
Filing timeAug 17
Trade dateAug 14, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$26.15
Pre-filing
1mo ago -8.3%1w ago +0.4%1d ago -0.7%
Returns since
7d -0.6%30d -4.0%90d -4.0%180d -4.0%1y -4.0%

DYN price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
DYN since 2026-08-17Filed 23 days ago · 30 days of pre-filing context shaded
Loading…
Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001577014-26-000016
Common Stock
Transaction date
Aug 14, 2026
Filed Aug 17, 2026, 09:30 PM · 3d delay
Shares
1.35M sh
$2.50k per share
Estimated value
-$3.39B
Computed from shares × price
Holdings after
2.44M sh
Indirect · See footnote

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Cluster Selling Large Holdings Reduction Large Sale Repeat Seller 10b5-1 Detected
-10score
Filing-only score

-10

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

No officer title

Officer NoDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on July 13, 2026.

  2. F2

    The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $25.8788 to $26.48 inclusive. The Reporting Persons undertake to…

  3. F3

    The shares are held directly by Atlas Venture Fund XI, L.P. ("Atlas Venture Fund XI"). The general partner of Atlas Venture Fund XI is Atlas Venture Associates XI, L.P. ("AVA XI LP"). Atlas Venture As…

  4. F4

    The shares are owned directly by Atlas Venture Opportunity Fund II, L.P. ("AVOF II"). Atlas Venture Associates Opportunity II, LP ("AVAO II LP") is the general partner of AVOF II. Atlas Venture Associ…

  5. F5

    The shares are held directly by Atlas Venture Opportunity Fund I, L.P. ("AVOF I"). The general partner of AVOF I is Atlas Venture Associates Opportunity I, L.P. ("AVAO I LP"). Atlas Venture Associates…

  6. F6

    The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $25.00 to $25.8916 inclusive.

  7. F7

    The shares are held directly by AVA XI LP. AVA XI LLC is the general partner of AVA XI LP. The Reporting Person is a member of AVA XI LLC and disclaims Section 16 beneficial ownership of the securitie…

Original filing · 0001577014-26-000016
Related transactions

0 other filings

Same reporting owner
Recent company activity

0 recent txs

DYN