Ridloff Elena
Director · Officer · IMUX, KYMR, SION
As of 2026-09-16, Ridloff Elena has 35 Form 4 transactions on record across 3 companies — 13 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Reconstructed holdings
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-05-11 | KYMR | Sale | 3,000 @ $87.00 | $261K | −100.0% of holding | 0 | Form 4 |
| 2026-04-01 | KYMR | Sale | 3,400 @ $85.19 | $290K | −73.9% of holding | 1,200 | Form 4 |
| 2026-04-01 | KYMR | Sale | 1,200 @ $86.05 | $103K | −100.0% of holding | 0 | Form 4 |
| 2026-03-31 | KYMR | Sale | 7,400 @ $85.37 | $632K | −100.0% of holding | 0 | Form 4 |
| 2025-09-02 | SION | Sale | 8,836 @ $25.08 | $222K | −18.7% of holding | 38,532 | Form 4 |
| 2025-08-29 | SION | Sale | 748 @ $25.18 | $19K | −1.6% of holding | 47,368 | Form 4 |
| 2025-08-28 | SION | Sale | 16,098 @ $25.97 | $418K | −25.1% of holding | 48,116 | Form 4 |
| 2025-08-27 | SION | Sale | 3,618 @ $25.10 | $91K | −5.3% of holding | 64,214 | Form 4 |
| 2025-08-26 | SION | Sale | 3,700 @ $25.13 | $93K | −5.2% of holding | 67,832 | Form 4 |
| 2025-08-20 | SION | Sale | 17,500 @ $22.69 | $397K | −19.7% of holding | 71,532 | Form 4 |
| 2025-08-19 | SION | Sale | 34,500 @ $21.08 | $727K | −27.9% of holding | 89,032 | Form 4 |
| 2025-06-11 | KYMR | Sale | 4,500 @ $50.00 | $225K | −100.0% of holding | 0 | Form 4 |
| 2025-06-03 | KYMR | Sale | 7,200 @ $45.50 | $328K | −60.0% of holding | 4,800 | Form 4 |
| 2025-06-03 | KYMR | Sale | 4,800 @ $47.00 | $226K | −100.0% of holding | 0 | Form 4 |
21 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-08-06 | IMUX | Award / grant | 50,740 | 50,740 | Form 4 |
| 2026-06-24 | KYMR | Award / grant | 6,068 | 6,068 | Form 4 |
| 2026-05-11 | KYMR | Option exercise | 3,000 | 3,000 | Form 4 |
| 2026-05-11 | KYMR | Option exercise | 3,000 | 13,000 | Form 4 |
| 2026-04-01 | KYMR | Option exercise | 4,600 | 4,600 | Form 4 |
| 2026-04-01 | KYMR | Option exercise | 4,600 | 0 | Form 4 |
| 2026-03-31 | KYMR | Option exercise | 7,400 | 7,400 | Form 4 |
| 2026-03-31 | KYMR | Option exercise | 7,400 | 4,600 | Form 4 |
| 2026-01-02 | SION | Award / grant | 165,440 | 165,440 | Form 4 |
| 2025-06-25 | KYMR | Award / grant | 16,000 | 16,000 | Form 4 |
| 2025-06-20 | — | Code U | 25,296 | 0 | Form 4 |
| 2025-06-20 | — | Disposition | 26,871 | 0 | Form 4 |
| 2025-06-20 | — | Disposition | 25,879 | 0 | Form 4 |
| 2025-06-20 | — | Disposition | 17,000 | 0 | Form 4 |
| 2025-06-20 | — | Disposition | 34,000 | 0 | Form 4 |
| 2025-06-20 | — | Disposition | 15,450 | 0 | Form 4 |
| 2025-06-11 | KYMR | Option exercise | 4,500 | 4,500 | Form 4 |
| 2025-06-11 | KYMR | Option exercise | 4,500 | 4,500 | Form 4 |
| 2025-06-03 | KYMR | Option exercise | 12,000 | 12,000 | Form 4 |
| 2025-06-03 | KYMR | Option exercise | 12,000 | 0 | Form 4 |
| 2025-02-06 | SION | Award / grant | 157,820 | 157,820 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.