DAVID SIDRANSKY
CIK 1277161 · Chairman of the Board · last filed 2025-11-07
"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
$4.26M
Companies
10
Total Filings
67
Lifetime Open-Market Net
-$311.6K
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 |
|---|---|---|---|---|---|---|---|
| CSBR | Director | 770,605 | $5.53 | $4.26M | $0 | 13 | 2025-11-07 |
| Orgenesis Inc. (ORGS) Delisted | Director | 18 | $0.49 | $9 | $1.1K | 9 | 2023-12-21 |
| Old Ayala, Inc (AYLA) Delisted | Director | 230 | $0.50 | $116 | $3.7K | 3 | 2022-06-15 |
| Ayala Pharmaceuticals, Inc. (ADXS) Delisted | Director | — | $0.60 | — | $0 | 3 | 2020-05-05 |
| Ayala Pharmaceuticals, Inc. (ADXSW) Delisted | Director | 110,355 | — | — | $0 | 5 | 2018-06-27 |
| Ayala Pharmaceuticals, Inc. (ADXS.W) Delisted | Director | 80,355 | — | — | -$342.3K | 6 | 2016-08-10 |
| IMMUNE PHARMACEUTICALS INC (IMNP) Delisted | Director | 1,085 | — | — | $26.0K | 2 | 2015-01-12 |
| K-V Pharmaceutical Co (KV.B) Delisted | Director | 1,000 | — | — | $0 | 5 | 2012-05-16 |
| ACEL | Director | — | $12.35 | — | $0 | 4 | 2009-01-05 |
| ZILA INC (ZILA) Delisted | Director | — | — | — | $0 | 1 | 2007-01-10 |
Recent Filings · Page 2 of 7
67 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 |
|---|---|---|---|---|---|
| 2021-11-09 | CSBR | Grant (A) | — | $0 | EDGAR |
| 2021-10-19 | CSBR | Mixed | +19,296 | $53.0K | EDGAR |
| 2021-06-14 | Old Ayala, Inc (AYLA) Delisted | Grant (A) | — | $0 | EDGAR |
| 2021-03-08 | Old Ayala, Inc (AYLA) Delisted | Buy (P) | +250 | $3.7K | EDGAR |
| 2021-01-11 | Orgenesis Inc. (ORGS) Delisted | Buy (P) | +180 | $1.1K | EDGAR |
| 2020-12-10 | CSBR | Grant (A) | — | $0 | EDGAR |
| 2020-10-28 | CSBR | Mixed | +6,567 | $1 | EDGAR |
| 2020-05-05 | Ayala Pharmaceuticals, Inc. (ADXS) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-03-20 | Orgenesis Inc. (ORGS) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-01-16 | Orgenesis Inc. (ORGS) Delisted | 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.