Insider · SEC Forms 3, 4, 5
CIK 1494730
All transactions
Every Form 4 row this person reported, newest first
Insider · SEC Forms 3, 4, 5
Every Form 4 row this person reported, newest first
Ridloff Elena (CIK 1772518) reported 22 SEC Form 4 insider transactions across 3 companies over the past 18 months (most recent 2026-09-18). Recent activity: Buy SION (47,269 shares), Buy SION (47,268 shares), Buy KYMR (3,000 shares), Sell KYMR (3,000 shares), Buy KYMR (7,400 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-18 | Sionna Therapeutics, Inc. (SION) | CFO and CBO | Buy | 47,269 | $0 |
| 2026-09-18 | Sionna Therapeutics, Inc. (SION) | CFO and CBO | Buy | 47,268 | $0 |
| 2026-05-11 | Kymera Therapeutics, Inc. (KYMR) | Director | Buy | 3,000 | $93,600 |
| 2026-05-11 | Kymera Therapeutics, Inc. (KYMR) | Director | Sell | 3,000 | $261,000 |
| 2026-04-01 | Kymera Therapeutics, Inc. (KYMR) | Director | Buy | 7,400 | $104,932 |
| 2026-04-01 | Kymera Therapeutics, Inc. (KYMR) | Director | Sell | 7,400 | $631,738 |
| 2026-04-01 | Kymera Therapeutics, Inc. (KYMR) | Director | Buy | 4,600 | $65,228 |
| 2026-04-01 | Kymera Therapeutics, Inc. (KYMR) | Director | Sell | 3,400 | $289,646 |
| 2026-04-01 | Kymera Therapeutics, Inc. (KYMR) | Director | Sell | 1,200 | $103,260 |
| 2025-09-03 | Sionna Therapeutics, Inc. (SION) | CFO & Head of Corp. Dev. | Sell | 748 | $18,835 |
| 2025-09-03 | Sionna Therapeutics, Inc. (SION) | CFO & Head of Corp. Dev. | Sell | 8,836 | $221,607 |
| 2025-08-28 | Sionna Therapeutics, Inc. (SION) | CFO & Head of Corp. Dev. | Sell | 3,700 | $92,981 |
| 2025-08-28 | Sionna Therapeutics, Inc. (SION) | CFO & Head of Corp. Dev. | Sell | 3,618 | $90,812 |
| 2025-08-28 | Sionna Therapeutics, Inc. (SION) | CFO & Head of Corp. Dev. | Sell | 16,098 | $418,065 |
| 2025-08-21 | Sionna Therapeutics, Inc. (SION) | CFO & Head of Corp. Dev. | Sell | 34,500 | $727,260 |
| 2025-08-21 | Sionna Therapeutics, Inc. (SION) | CFO & Head of Corp. Dev. | Sell | 17,500 | $397,075 |
| 2025-06-20 | Kronos Bio, Inc. (KRON) | Director | Sell | 25,296 | $14,419 |
| 2025-06-11 | Kymera Therapeutics, Inc. (KYMR) | Director | Buy | 4,500 | $91,305 |
| 2025-06-11 | Kymera Therapeutics, Inc. (KYMR) | Director | Sell | 4,500 | $225,000 |
| 2025-06-03 | Kymera Therapeutics, Inc. (KYMR) | Director | Buy | 12,000 | $332,040 |
| 2025-06-03 | Kymera Therapeutics, Inc. (KYMR) | Director | Sell | 7,200 | $327,600 |
| 2025-06-03 | Kymera Therapeutics, Inc. (KYMR) | Director | Sell | 4,800 | $225,600 |
Source: SEC Form 4 filings · as of 2026-09-18