RON BENTSUR
CIK 1251213 · Chairman & CEO · last filed 2026-07-01
"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
$73.11M
Companies
5
Total Filings
115
Lifetime Open-Market Net
-$9.99M
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 |
|---|---|---|---|---|---|---|---|
| NVCT | Chairman & CEO | 3,688,424 | $19.82 | $73.10M | $2.73M | 51 | 2026-07-01 |
| XAIR | Director | 362 | $5.46 | $2.0K | -$1.49M | 25 | 2024-11-26 |
| STEMLINE THERAPEUTICS INC (STML) Delisted | Director | 0 | — | — | -$22.4K | 8 | 2020-06-10 |
| KERYX BIOPHARMACEUTICALS INC (KERX) Delisted | Chief Executive Officer | 777,209 | — | — | -$11.23M | 29 | 2015-04-08 |
| XTLB | CEO | 1,005 | $2.96 | $3.0K | $19.9K | 1 | 2007-08-21 |
Recent Filings · Page 3 of 12
115 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 |
|---|---|---|---|---|---|
| 2023-06-27 | NVCT | Buy (P) | +750 | $12.4K | EDGAR |
| 2023-06-22 | NVCT | Buy (P) | +500 | $8.9K | EDGAR |
| 2023-06-08 | NVCT | Buy (P) | +350 | $6.1K | EDGAR |
| 2023-06-01 | NVCT | Buy (P) | +330 | $5.7K | EDGAR |
| 2023-05-26 | NVCT | Buy (P) | +200 | $3.5K | EDGAR |
| 2023-05-18 | NVCT | Buy (P) | +320 | $5.4K | EDGAR |
| 2023-03-27 | NVCT | Buy (P) | +230 | $2.8K | EDGAR |
| 2023-03-23 | NVCT | Buy (P) | +480 | $5.8K | EDGAR |
| 2023-03-21 | XAIR | Buy (P) | +2,300 | $14.9K | EDGAR |
| 2023-03-16 | NVCT | Buy (P) | +2,160 | $23.5K | 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.