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MICHAEL W WALLACE

CIK 1070123 · Chief Operating Officer · last filed 2026-08-04

MICHAEL W WALLACE is a Chief Operating Officer who has filed 60 SEC Form 4 insider transactions across 1 company since 2017. The most recent filing, for SPOK, was dated Aug 4, 2026. Across all open-market trades the lifetime net is −$2.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $836.6K across reported positions.

"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

60 filings
Insider 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
2026-08-04 SPOK Grant (A) — $0 EDGAR
2026-03-04 SPOK Mixed +21,785 $264.5K EDGAR
2026-01-07 SPOK Mixed +11,880 $156.7K EDGAR
2026-01-05 SPOK Grant (A) — $0 EDGAR
2025-08-26 SPOK Sell (S) −10,806 -$193.1K EDGAR
2025-08-25 SPOK Notice (144) −11,000 -$197.8K EDGAR
2025-08-05 SPOK Sell (S) −10,000 -$184.9K EDGAR
2025-08-04 SPOK Notice (144) −10,000 -$183.6K EDGAR
2025-05-08 SPOK Sell (S) −6,000 -$99.2K EDGAR
2025-05-07 SPOK Notice (144) −6,000 -$99.3K EDGAR
Showing 1–10 of 60
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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.