Michael H Tardugno
CIK 1384550 · Executive Chairman of Board · last filed 2026-07-21
"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
$112.6K
Companies
3
Total Filings
77
Lifetime Open-Market Net
$419.6K
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 |
|---|---|---|---|---|---|---|---|
| IMNN | Executive Chairman of Board | 73,621 | $1.53 | $112.6K | $25.8K | 15 | 2026-07-21 |
| Imunon, Inc. (CLSN) Delisted | Chairman, President and CEO | 16,513 | $1.96 | $32.4K | $345.0K | 56 | 2022-06-15 |
| Imunon, Inc. (CLN) Delisted | President & CEO | 27,067 | — | — | $48.8K | 6 | 2008-06-18 |
Recent Filings · Page 4 of 8
77 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 |
|---|---|---|---|---|---|
| 2016-10-11 | Imunon, Inc. (CLSN) Delisted | Buy (P) | +10,000 | $11.4K | EDGAR |
| 2016-09-08 | Imunon, Inc. (CLSN) Delisted | Grant (A) | — | $0 | EDGAR |
| 2016-08-17 | Imunon, Inc. (CLSN) Delisted | Buy (P) | +5,000 | $6.2K | EDGAR |
| 2016-06-16 | Imunon, Inc. (CLSN) Delisted | Buy (P) | +7,500 | $10.1K | EDGAR |
| 2016-02-19 | Imunon, Inc. (CLSN) Delisted | Buy (P) | +3,000 | $3.8K | EDGAR |
| 2016-02-17 | Imunon, Inc. (CLSN) Delisted | Buy (P) | +2,000 | $2.5K | EDGAR |
| 2016-02-16 | Imunon, Inc. (CLSN) Delisted | Buy (P) | +4,500 | $5.4K | EDGAR |
| 2016-02-12 | Imunon, Inc. (CLSN) Delisted | Buy (P) | +6,500 | $7.3K | EDGAR |
| 2016-02-04 | Imunon, Inc. (CLSN) Delisted | Grant (A) | +25,000 | $33.2K | EDGAR |
| 2015-08-11 | Imunon, Inc. (CLSN) Delisted | Buy (P) | +5,000 | $11.4K | 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.