DAVID NATAN
CIK 1253108 · CEO · last filed 2026-05-21
"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
$917.6K
Companies
10
Total Filings
27
Lifetime Open-Market Net
-$1.53M
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 |
|---|---|---|---|---|---|---|---|
| QUCY | Director | 137,141 | $1.09 | $149.5K | $0 | 1 | 2026-05-21 |
| FIEE | Director | 248,792 | $2.83 | $704.1K | $0 | 1 | 2026-05-07 |
| SBFMW | Director | 100,000 | $0.06 | $5.5K | $0 | 1 | 2026-04-14 |
| SOWG | Director | 18,458 | $3.17 | $58.5K | $0 | 1 | 2026-04-01 |
| INDP | Director | — | $1.73 | — | $0 | 1 | 2026-01-22 |
| Bio Green Med Solution, Inc. (CYCCP) Delisted | Director | 100,000 | $5.05 | $505.0K | $0 | 2 | 2025-02-28 |
| FiEE, Inc. (MINM) Delisted | Director | 146,792 | $3.61 | $529.9K | $0 | 2 | 2024-10-01 |
| OPGEN INC (OPGN) Delisted | Director | 10,000 | $24.75 | $247.5K | $0 | 1 | 2024-04-12 |
| TITAN PHARMACEUTICALS INC (TTNP) Delisted | Director | 3,312 | $4.61 | $15.3K | $0 | 3 | 2023-10-26 |
| PharmaNet Development Group Inc (PDGI) Delisted | Former EVP | 7,766 | — | — | -$1.53M | 6 | 2007-12-12 |
Recent Filings · Page 3 of 3
27 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 |
|---|---|---|---|---|---|
| 2010-02-22 | — | Buy (P) | +1,100 | $4.0K | |
| 2007-12-12 | PharmaNet Development Group Inc (PDGI) Delisted | Sell (S) | −3,000 | -$125.9K | EDGAR |
| 2007-12-07 | PharmaNet Development Group Inc (PDGI) Delisted | Mixed | −4,500 | -$212.0K | EDGAR |
| 2007-12-03 | PharmaNet Development Group Inc (PDGI) Delisted | Mixed | — | -$12.9K | EDGAR |
| 2007-11-19 | PharmaNet Development Group Inc (PDGI) Delisted | Mixed | −6,515 | -$302.1K | EDGAR |
| 2007-11-15 | PharmaNet Development Group Inc (PDGI) Delisted | Mixed | — | -$156.0K | EDGAR |
| 2007-08-07 | PharmaNet Development Group Inc (PDGI) Delisted | Grant (A) | +894 | $24.1K | EDGAR |
Showing 21–27 of 27
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Page 3 of 3
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.