POSNER BRIAN S purchased 16.1% of their position (2.50K shares) of DYNE THERAPEUTICS, INC. on the open market
Open‑market purchase worth $42.8K — a significant purchase. The strongest form of insider conviction signal.
P · 1 purchase
Filed: 5/22/2026ACC: 0001193125-26-236877
+2.50K
Net shares
Net buyer
$42.8K
Total acquired
1
Open market trades
1B · 0S
1
Total transactions
2.50K acquired
Non-Derivative Transactions1
Common Stock
Direct
Shares
+2.50K
Price / share
$17.12
Trade value
$42.80K
% of position
16.1%
5/20/2026
15.50K→18K
Total
Net shares
+2.50K
Net value
$42.80K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 5/20/2026 | P · Purchase | +2.50K | $17.12 | $42.80K | 16.1% | 15.50K | 18K |
| Total | +2.50K | $42.80K | ||||||
Derivative Transactions0
No derivative transactions reported