Michael H. Davidson
CIK 1573785 · Chief Executive Officer · last filed 2026-06-12
"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
$9.71M
Companies
6
Total Filings
29
Lifetime Open-Market Net
-$25.06M
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 |
|---|---|---|---|---|---|---|---|
| BIOA | Director | — | $21.92 | — | $0 | 3 | 2026-06-12 |
| NAMSW | Chief Executive Officer | 459,859 | $19.38 | $8.91M | -$25.16M | 9 | 2026-03-02 |
| TENX | Director | 2,881 | $15.80 | $45.5K | $0 | 5 | 2026-01-13 |
| SLN | Director | — | $11.55 | — | $0 | 1 | 2025-01-06 |
| THC | Director | 2,881 | $262.63 | $756.6K | $0 | 1 | 2024-08-08 |
| LISATA THERAPEUTICS, INC. (CLBS) Delisted | Director | 13,984 | $6.40 | $89.4K | $99.9K | 4 | 2022-01-12 |
Recent Filings · Page 2 of 3
29 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 |
|---|---|---|---|---|---|
| 2025-03-28 | NAMSW | Mixed | +57,128 | $0 | EDGAR |
| 2025-03-26 | NAMS | Notice (144) | −12,258 | -$287.0K | EDGAR |
| 2025-01-07 | NAMSW | Grant (A) | +123,529 | $0 | EDGAR |
| 2025-01-06 | SLN | Grant (A) | — | $0 | EDGAR |
| 2024-12-12 | TENX | Grant (A) | — | $0 | EDGAR |
| 2024-10-11 | NAMSW | Gift (G) | — | $0 | EDGAR |
| 2024-09-27 | BIOA | Grant (A) | — | $0 | EDGAR |
| 2024-08-22 | NAMSW | Buy (P) | +5,000 | $81.3K | EDGAR |
| 2024-08-08 | THC | Buy (P) | +2,500 | $0 | EDGAR |
| 2024-06-24 | NAMSW | Buy (P) | +5,000 | $86.3K | 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.