Summary
Updated Aug 31, 2026
William Heard is Director of Anterix Inc. (ATEX). 6 SEC Form 4 filings on record going back to 2025, most recently on 20 August 2026. Most recent open-market trade: sold $4.18M of ATEX on 18 August 2026. Lifetime open-market sales: $5.57M.
Recent Transactions
11Every recent SEC Form 4 transaction William Heard has reported, most recent first.
Trading Pattern
InsiderAlpha's records for William Heard go back to 2025: 6 primary Form 4 filings, an average of 3.0 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 William Heard 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.
- Christopher Guttman-Mccabe - $19.75M of ATEX open-market activity in the last 12 months
- Scott A. Lang - $3.28M of ATEX open-market activity in the last 12 months
- Gena L. Ashe - $1.58M of ATEX open-market activity in the last 12 months
- Thomas R. Kuhn - $1.02M of ATEX open-market activity in the last 12 months
- Mahvash Yazdi - $560K of ATEX open-market activity in the last 12 months
- Elena Marquez - $341K of ATEX 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 William Heard?
William Heard is a corporate insider, tracked as Director of Anterix Inc. (ATEX). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has William Heard submitted recently?
4 primary Form 4 filings in the last 90 days, covering 1 company.
Has William Heard been buying or selling stock?
Recorded transactions: 0 open-market purchases and 7 open-market sales ($5.57M) across all tracked filings.
Where can I see all of William Heard'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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