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William Spencer Marshall

CIK 1898468 · Co-Founder and CEO · last filed 2026-07-13

William Spencer Marshall is a Co-Founder and CEO who has filed 36 SEC Form 4 insider transactions across 2 companies since 2021. The most recent filing shows the insider sold $5.2M of PL on Jul 13, 2026. Across all open-market trades the lifetime net is −$18.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $52.1M 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

$52.06M

Companies

2

Total Filings

36

Lifetime Open-Market Net

-$18.78M

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
PL Co-Founder and CEO 2,703,115 $19.26 $52.06M -$5.18M 2 2026-07-13
Planet Labs PBC (PL.WS) Delisted Co-Founder and CEO 3,037,726 $23.71 $72.02M -$13.59M 30 2026-04-24

Recent Filings

36 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
2026-07-13 PL Sell (S) −200,000 -$5.18M EDGAR
2026-07-10 PL Notice (144) −200,000 -$5.44M EDGAR
2026-06-17 PL Tax (F) −134,641 -$4.12M EDGAR
2026-04-24 Planet Labs PBC (PL.WS) Delisted Gift (G) −155,000 $0 EDGAR
2026-04-08 Planet Labs PBC (PL.WS) Delisted Sell (S) −200,000 -$7.01M EDGAR
2026-04-06 PL Notice (144) −200,000 -$7.18M EDGAR
2026-03-23 Planet Labs PBC (PL.WS) Delisted Mixed +38,172 -$1.07M EDGAR
2026-03-16 Planet Labs PBC (PL.WS) Delisted Mixed +271,045 -$3.03M EDGAR
2026-02-05 Planet Labs PBC (PL.WS) Delisted Mixed +60,859 -$1.51M EDGAR
2026-01-23 Planet Labs PBC (PL.WS) Delisted Mixed +60,858 -$1.66M EDGAR
Showing 1–10 of 36
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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.