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.
Loading insider history…
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 4 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 |
|---|---|---|---|---|---|
| 2021-06-23 | Kronos Bio, Inc. (KRON) Delisted | Grant (A) | — | $0 | EDGAR |
| 2021-06-17 | KYMR | Grant (A) | — | $0 | EDGAR |
| 2021-04-30 | ACAD | Mixed | +2,213 | -$21.0K | EDGAR |
| 2021-03-16 | KYMR | Grant (A) | — | $0 | EDGAR |
| 2021-02-25 | ACAD | Grant (A) | — | $0 | EDGAR |
| 2021-02-08 | ACAD | Mixed | +4,439 | -$103.8K | EDGAR |
| 2021-01-08 | ACAD | Mixed | +1,706 | -$54.2K | EDGAR |
| 2020-10-16 | Kronos Bio, Inc. (KRON) Delisted | Buy (P) | +2,630 | $50.0K | EDGAR |
| 2020-05-01 | ACAD | Mixed | +2,195 | -$307.8K | EDGAR |
| 2020-01-08 | ACAD | Grant (A) | — | $0 | 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.