MICHAEL W WALLACE
CIK 1070123 · Chief Operating Officer · last filed 2026-08-04
"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
$836.6K
Companies
1
Total Filings
60
Lifetime Open-Market Net
-$2.05M
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 |
|---|---|---|---|---|---|---|---|
| SPOK | Chief Operating Officer | 74,034 | $11.30 | $836.6K | -$2.05M | 52 | 2026-08-04 |
Recent Filings · Page 4 of 6
60 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 |
|---|---|---|---|---|---|
| 2022-12-06 | SPOK | Mixed | +2,000 | $15.5K | EDGAR |
| 2022-08-22 | SPOK | Mixed | +1,690 | $12.1K | EDGAR |
| 2022-05-03 | SPOK | Mixed | +2,313 | $16.6K | EDGAR |
| 2022-02-25 | SPOK | Mixed | +5,706 | $49.4K | EDGAR |
| 2022-02-24 | SPOK | Grant (A) | — | $0 | EDGAR |
| 2022-01-04 | SPOK | Mixed | +10,701 | $99.8K | EDGAR |
| 2021-07-09 | SPOK | Mixed | +276 | -$2.3K | EDGAR |
| 2021-04-02 | SPOK | Mixed | +256 | -$2.2K | EDGAR |
| 2021-02-26 | SPOK | Mixed | +5,794 | $58.5K | EDGAR |
| 2021-01-22 | SPOK | Mixed | +223 | -$2.2K | 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.