Insider Cluster (3 insiders) ·Filed Apr 22, 2026

DYN

Dyne Therapeutics, Inc.
NEUTRAL
Impact 4/10
Horizondays Processed5mo ago
Insider cluster: 2 insiders, $725K total
Actionable Insight • Neutral

The concentrated selling by a single director over five days is notable but not alarming at 0.11% of market cap. Monitor for any upcoming earnings release or clinical data readout that could explain the timing. The historical calibration suggests limited predictive power at this impact level — treat as a cautionary signal rather than a definitive bearish indicator.

DirectionNeutral
Confidencemedium
Horizondays
Final — all horizons settled through T+60d ⚠ clustered
DYN ▲ +40.38% at T+60d
NEUTRAL call ✓ call won +40.38% · α vs SPY +36.27% · entry $17.41 → $24.44
Entry anchored
Apr 28, 2026
via day open
T+1d
+0.80%
call +0.80% · α -0.22%
$17.55
settled 5mo ago
T+5d
+8.21%
call +8.21% · α +5.10%
$18.84
settled 5mo ago
T+20d
+6.61%
call +6.61% · α +0.56%
$18.56
settled 4mo ago
T+60d
+40.38%
call +40.38% · α +36.27%
$24.44
settled 2mo ago

Price Chart

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Executive Summary

Director Jason P. Rhodes sold $3.4M worth of DYN shares over a five-day window, with total insider selling of $3.4M representing 0.11% of the $3.0B market cap. While the dollar amount is modest relative to market cap, the concentrated selling by a single director at an average price of ~$18.80 (near recent highs) suggests potential profit-taking ahead of a catalyst or uncertainty. The cluster is amplified by the cross-filing context of insider trades and earnings context, but the historical calibration shows low observed probability of positive outcomes at this impact level, warranting a neutral-to-moderate score.

Key Financial Metrics

Direction
selling
Total Value
$3.4M
Insiders
3

Key Facts

  • Director Jason P. Rhodes sold 177,181 shares total across 4 open-market sales from April 22-27, 2026, for ~$3.36M
  • Director Dirk Kersten sold 2,652 shares on April 22 for ~$53K
  • Director David Charles Lubner gifted 53,625 shares on April 24 (non-cash, $0 value)
  • Total open-market selling value: ~$3.42M, representing 0.11% of DYN's $3.0B market cap
  • Insider selling cluster is amplified by cross-filing context (insider trades + earnings context), but historical calibration shows low observed probability of positive outcomes at score 4-6

Financial Impact

Total insider selling of $3.42M, or 0.11% of market cap — modest relative to company size

insider selling volume

Risk Factors

  • Director Rhodes sold near recent highs (~$18.80 avg), which could indicate insider concern about valuation or upcoming news
  • No insider buying in the cluster to offset selling — one-sided selling pattern
  • Cross-filing context amplifies the cluster, but historical calibration shows low win rate for bullish outcomes at this score

Market Snapshot

Exchange
Nasdaq
Sector
Pharmaceutical Preparations
Analyst Consensus
85% bullish (20 analysts)

Investment Themes

Biotech & Drug Discovery

Documents Analyzed

This report is based on 1 SEC document filed with EDGAR.

DocumentAccession Number
CLUSTER Data (Synthetic)cluster-DYN-1777409838174
44 reports for DYN
Performance horizon
87% Hit rate 13 of 15 directional calls best @ T+60▲ +46.36%May 20, 2026
Filters
Rows
Reports for DYN — sortable, filterable
TypeNow
Aug 17, 2026
6w ago
Insider Cluster
BEARISH ★ 6/10
$26.15 $17.90▲ +31.55%▲ +29.57%$15.39 (+41.15%)
Aug 14, 2026
6w ago
144
NEUTRAL ★ 4/10
$26.15 $18.52▼ −29.18%▼ −27.65%$15.39 (−41.15%)
Aug 13, 2026
7w ago
144
BEARISH ★ 6/10
$25.70 $18.52▲ +27.94%▲ +25.95%$15.39 (+40.12%)
Aug 13, 2026
7w ago
144
NEUTRAL ★ 2/10
$25.70 $18.52▼ −27.94%▼ −25.95%$15.39 (−40.12%)
Aug 13, 2026
7w ago
144
NEUTRAL ★ 2/10
$25.70 $18.52▼ −27.94%▼ −25.95%$15.39 (−40.12%)
Jul 29, 2026
9w ago
Press Release
BULLISH ★ 7/10
$25.73 $26.09▲ +1.40%▼ −2.57%$15.39 (−40.19%)
Jul 22, 2026
10w ago
Press Release
BEARISH ★ 6/10
$23.21 $26.78▼ −15.38%▼ −12.48%$15.39 (+33.69%)
Jul 20, 2026
10w ago
8-K
BULLISH ★ 7/10
$23.45 $26.15▲ +11.51%▲ +7.39%$15.39 (−34.37%)
Jun 30, 2026
13w ago
Insider Cluster
NEUTRAL ★ 5/10
$21.79 $25.10▲ +15.19%▲ +17.38%$15.39 (−29.37%)
Jun 29, 2026
13w ago
144
BEARISH ★ 4/10
$22.21 $25.63▼ −15.40%▼ −16.43%$15.39 (+30.71%)
Showing 10 of 44

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Report published Apr 28, 2026