Senior insider sale
CFO & Head of Corp. Dev. at SIONNA THERAPEUTICS, INC. — senior position signals high conviction
$1.10M
52K shares
What this filing means
RIDLOFF ELENA plans to sell 52K shares of SIONNA THERAPEUTICS, INC. valued at approximately $1.10M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 8/20/2025ACC: 0001950047-25-006122
Officer· CFO & Head of Corp. Dev.
Since Feb 2025
52K
Shares to sell
$1.10M
Approx. market value
17.50K
Acquired (3 months)
1
Planned
1 completed
Securities Acquired — Last 3 Months1
Previously Exercised Stock Options
Cash
9/20/2022
17.50KTotal acquired17.50K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
9/20/2022 | Previously Exercised Stock Options Cash | 17.50K | — |
| Total | 17.50K | ||
Planned & Completed Dispositions2
Completed
—Completed
Units to sell
34.50K
Market value
$727.1K
8/19/2025
Planned — Approximate Date
NASDAQPlanned
Units to sell
17.50K
Market value
$375.9K
8/20/2025
Total
Units
52K
Value
$1.10M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
8/19/2025 | 34.50K | $727.1K | — | Completed |
| Planned — Approximate Date | ||||
8/20/2025 | 17.50K | $375.9K | NASDAQ | Planned |
| Total | 52K | $1.10M | ||