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Joseph C. III Cook

CIK 1783205 · last filed 2021-03-22

Joseph C. III Cook is a corporate insider who has filed 30 SEC Form 4 insider transactions across 1 company since 2019. The most recent filing shows the insider exercised options covering $195.7K of CSTL on Mar 22, 2021. Across all open-market trades the lifetime net is −$47.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.0M 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

$3.04M

Companies

1

Total Filings

30

Lifetime Open-Market Net

-$47.87M

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
CSTL Director 125,124 $24.30 $3.04M -$47.87M 30 2021-03-22

Recent Filings

30 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
2021-03-22 CSTL Exer (M) +12,229 $195.7K EDGAR
2020-12-18 CSTL Sell (S) −169,900 -$11.26M EDGAR
2020-12-14 CSTL Sell (S) −24,659 -$1.47M EDGAR
2020-12-11 CSTL Sell (S) −78,265 -$4.57M EDGAR
2020-12-09 CSTL Sell (S) −47,176 -$2.65M EDGAR
2020-10-14 CSTL Sell (S) −50,000 -$2.74M EDGAR
2020-09-11 CSTL Sell (S) −5,994 -$300.0K EDGAR
2020-09-09 CSTL Sell (S) −131,103 -$6.25M EDGAR
2020-09-04 CSTL Sell (S) −37,565 -$1.73M EDGAR
2020-09-02 CSTL Sell (S) −48,538 -$2.23M EDGAR
Showing 1–10 of 30
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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.