CFO and CBO · Sionna Therapeutics, Inc. · Sionna Therapeutics, Inc. — Non-Qualified Stock Option (right to buy)
Side
A
Value
—
Shares
165.4K
Price
—
Executed
Sep 17, 2026
Disclosed
Sep 18, 2026
Disclosure timeline1 days from execution to publication · legal deadline 2 business days
Sep 17 executedSep 18, 2026 disclosed
SION · daily
Yahoo Finance chart API
▲Execution▼Disclosure●Material company filing●Other disclosed buy●Other disclosed sellUnofficial public endpoint; daily OHLCV, split-adjusted. Replace with a licensed feed for production.
Grant or award — administrative, little informational value
Relative size+1 / 25
No reported dollar value · new position
Filing timing0 / 15
Disclosed 1 business day after execution (deadline: 2)
Historical behavior+8 / 15
First recorded trade by this actor in this security
Frequency & clustering0 / 15
No clustered activity in the dataset
Market events0 / 10
No material company filing within 60 days after the trade
The Insider Score measures how far a disclosure deviates from normal filing patterns. A high score is a prompt for research, not evidence of illegal insider trading.
Sionna Therapeutics, Inc. — Non-Qualified Stock Option (right to buy)
Ticker
SION
Shares
165.4K
Price per share
$0
Execution date (reported)
Sep 17, 2026
Owned after transaction
165.4K shares
Days from execution to publication
1
What this establishes
Ridloff Elena filed this Form 4 reporting a grant or award of SION on Sep 17, 2026. It became public on Sep 18, 2026. The filing establishes the reported transaction and the filer's stated role. It does not establish why the trade was made or what the filer knew.
Extraction
Method
Form 4 XML
Confidence
1.00
CFO and CBO
Ridloff Elenacik:0001772518
Issuer
Sionna Therapeutics, Inc.cik:0002036042
Revision history · 0
No field has changed since this record was first ingested.
