Ridloff Elena
SEC insider (Form 3/4/5 filer). CIK 0001772518. CFO and CBO at Sionna Therapeutics, Inc. (SION) and 3 other issuers. 34 reported Form 4/5 transactions since Sep 2024; latest on Sep 17, 2026. Located in WALTHAM, MA.
Companies Ridloff Elena has filed insider reports for
- Sionna Therapeutics, Inc. (SION): Officer, CFO and CBO
- IMMUNIC, INC. (IMUX): Director
- Kymera Therapeutics, Inc. (KYMR): Director
- Kronos Bio, Inc. (KRON): Director
Ridloff Elena
CIK: 0001772518
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (34 total)
- Sep 17, 2026SION
Sionna Therapeutics, Inc.
AwardDirect47.3K shares- - Sep 17, 2026SION
Sionna Therapeutics, Inc.
AwardDirect47.3K shares- - Sep 17, 2026SION
Sionna Therapeutics, Inc.
DispositionDirectNon-Qualified Stock Option (right to buy)
165.4K shares- - Aug 6, 2026IMUX
IMMUNIC, INC.
AwardDirectStock Option
50.7K shares- - Jun 24, 2026KYMR
Kymera Therapeutics, Inc.
AwardDirectStock Option (Right to Buy)
6.1K shares- - May 11, 2026KYMR
Kymera Therapeutics, Inc.
ExerciseDirect3K shares at avg. $31.20$94K - May 11, 2026KYMR
Kymera Therapeutics, Inc.
SaleDirect3K shares at avg. $87.00$261K - Apr 1, 2026KYMR
Kymera Therapeutics, Inc.
SaleDirect3.4K shares at avg. $85.19$290K - Apr 1, 2026KYMR
Kymera Therapeutics, Inc.
SaleDirect1.2K shares at avg. $86.05$103K - Apr 1, 2026KYMR
Kymera Therapeutics, Inc.
ExerciseDirect4.6K shares at avg. $14.18$65K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 17, 2026 |  SION Sionna Therapeutics, Inc. | Award | 47,268 | - | $0 | Direct |
| Sep 17, 2026 | SION Sionna Therapeutics, Inc. | Award | 47,269 | - | $0 | Direct |
| Sep 17, 2026 | SION Sionna Therapeutics, Inc. | Disposition Non-Qualified Stock Option (right to buy) | 165,440 | - | - | Direct |
| Aug 6, 2026 |  IMUX IMMUNIC, INC. | Award Stock Option | 50,740 | - | - | Direct |
| Jun 24, 2026 |  KYMR Kymera Therapeutics, Inc. | Award Stock Option (Right to Buy) | 6,068 | - | - | Direct |
| May 11, 2026 | KYMR Kymera Therapeutics, Inc. | Exercise | 3,000 | $31.20 | $93,600 | Direct |
| May 11, 2026 | KYMR Kymera Therapeutics, Inc. | Sale | 3,000 | $87.00 | $261,000 | Direct |
| Apr 1, 2026 | KYMR Kymera Therapeutics, Inc. | Sale | 3,400 | $85.19 | $289,662 | Direct |
| Apr 1, 2026 | KYMR Kymera Therapeutics, Inc. | Sale | 1,200 | $86.05 | $103,260 | Direct |
| Apr 1, 2026 | KYMR Kymera Therapeutics, Inc. | Exercise | 4,600 | $14.18 | $65,228 | Direct |
1-10 of 34 transactions