Elena Ridloff
CIK 1772518 · CFO · last filed 2026-08-10
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$968.0K
Companies
5
Total Filings
43
Lifetime Open-Market Net
-$6.51M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| IMUX | Director | — | $14.58 | — | $0 | 1 | 2026-08-10 |
| KYMR | Director | 3,000 | $119.05 | $357.1K | -$2.06M | 14 | 2026-06-25 |
| SION | CFO | 47,368 | $6.46 | $306.0K | -$1.97M | 5 | 2026-01-06 |
| Kronos Bio, Inc. (KRON) Delisted | Director | 0 | $0.88 | $0 | $50.0K | 6 | 2025-06-20 |
| ACAD | EVP and CFO | 10,553 | $28.89 | $304.9K | -$2.53M | 9 | 2021-04-30 |
Recent Filings · Page 2 of 5
43 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-08-26 | SION | Notice (144) | −33,000 | -$794.0K | EDGAR |
| 2025-08-21 | SION | Sell (S) | −52,000 | -$1.12M | EDGAR |
| 2025-08-20 | SION | Notice (144) | −17,500 | -$375.9K | EDGAR |
| 2025-08-19 | SION | Notice (144) | −34,500 | -$738.0K | EDGAR |
| 2025-06-26 | KYMR | Grant (A) | — | $0 | EDGAR |
| 2025-06-20 | Kronos Bio, Inc. (KRON) Delisted | Mixed | −25,296 | -$14.4K | EDGAR |
| 2025-06-11 | KYMR | Notice (144) | −4,500 | -$218.7K | EDGAR |
| 2025-06-11 | KYMR | Mixed | — | -$133.7K | EDGAR |
| 2025-06-03 | KYMR | Notice (144) | −12,000 | -$517.6K | EDGAR |
| 2025-06-03 | KYMR | Mixed | — | -$221.2K | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.