Summary
Updated Aug 31, 2026
Michael W. Wallace is Chief Operating Officer of Spok Holdings, Inc (SPOK). 8 SEC Form 4 filings on record going back to 2024, most recently on 4 August 2026. Most recent open-market trade: sold $193K of SPOK on 25 August 2025. Lifetime open-market sales: $669K.
Recent Transactions
9Every recent SEC Form 4 transaction Michael W. Wallace has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Michael W. Wallace go back to 2024: 8 primary Form 4 filings, an average of 2.7 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Michael W. Wallace files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Todd J. Stein - $2.24M of SPOK open-market activity in the last 12 months
- Sharon Woods-Keisling - $336K of SPOK open-market activity in the last 12 months
- Vincent D. Kelly - $107K of SPOK open-market activity in the last 12 months
- Christine Cournoyer - $94K of SPOK open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Michael W. Wallace?
Michael W. Wallace is a corporate insider, tracked as Chief Operating Officer of Spok Holdings, Inc (SPOK). InsiderAlpha holds 8 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Michael W. Wallace submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Michael W. Wallace been buying or selling stock?
Recorded transactions: 0 open-market purchases and 8 open-market sales ($669K) across all tracked filings.
Where can I see all of Michael W. Wallace's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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