RIDLOFF ELENA (CFO & Head of Corp. Dev.) sold 42.1% of their position (52K shares) of SIONNA THERAPEUTICS, INC. on the open market
Open‑market sale worth $1.12M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 2 sales
Filed: 8/21/2025ACC: 0001482981-25-000143
Officer· CFO & Head of Corp. Dev.
Since Feb 2025
-52K
Net shares
Net seller
$1.12M
Total sold
2
Open market trades
0B · 2S
2
Total transactions
52K disposed
Non-Derivative Transactions2
Common Stock
Direct
Shares
−34.50K
Price / share
$21.08
Trade value
$727.26K
% of position
27.9%
8/19/2025
123.53K→89.03K
Common Stock
Direct
Shares
−17.50K
Price / share
$22.69
Trade value
$397.07K
% of position
19.7%
8/20/2025
89.03K→71.53K
Total
Net shares
−52K
Net value
-$1.12M
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 8/19/2025 | S · Sale | −34.50K | $21.08 | $727.26K | 27.9% | 123.53K | 89.03K |
| Common Stock Direct | 8/20/2025 | S · Sale | −17.50K | $22.69 | $397.07K | 19.7% | 89.03K | 71.53K |
| Total | −52K | -$1.12M | ||||||
Derivative Transactions0
No derivative transactions reported