Insiders who reported open-market trades in the last 12 months at the companies William Spencer Marshall 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.
Ashley F. Johnson - $14.47M in PL purchases and sales in the last 12 months
Robert H. Schingler - $7.22M in PL purchases and sales in the last 12 months
Kristen Robinson - $2.22M in PL purchases and sales in the last 12 months
Ita M. Brennan - $1.80M in PL purchases and sales in the last 12 months
Vijaya Gadde - $535K in PL purchases and sales in the last 12 months
John W. Raymond - $170K in PL purchases and sales in the last 12 months
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William Spencer Marshall is a corporate insider, tracked as Co-Founder and CEO, Director of Planet Labs PBC (PL). InsiderAlpha holds 16 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 William Spencer Marshall submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has William Spencer Marshall been buying or selling stock?
Recorded transactions: 0 open-market purchases and 4 open-market sales ($19.17M) across all tracked filings.
William Spencer Marshall is Co-Founder and CEO, Director of Planet Labs PBC (PL). 16 SEC Form 4 filings on record going back to 2024, most recently on 18 September 2026. Most recent open-market trade: sold $5.18M of PL on 14 July 2026. Lifetime open-market sales: $19.17M.
Recent transactions
20
The latest 20 SEC Form 4 transactions reported by William Spencer Marshall.
InsiderAlpha's records for William Spencer Marshall go back to 2024: 16 primary Form 4 filings, an average of 5.3 per year. 4 recorded transactions carry a Rule 10b5-1 plan flag. This identifies the marked transactions as reported under a trading plan; it does not establish the plan status of unmarked transactions.
