Updated: May 18, 2026

Joseph C. Cook III

CSTLCASTLE BIOSCIENCES INCSEC CIK: 0001783205
Estimated Net Worth
$8.68 Million14.2%vs Last Year
Last Updated: May 18, 2026 10:50 PM EST

Transaction Summary

Total Transactions31
Buy-Sell Ratio0.04
Buy Transactions1
Sell Transactions27

Transaction Volume

Total Volume-$53.23M
Net Volume$53.23M
Buy Volume$0.00
Sell Volume-$53.23M

Trade Analysis

AVG Trade Size-$1.71M
Largest Trade$195.66K
Most Active MonthJun
Most Active Year2020

Trading Sentiment

OverallBullish
Recent TradeNeutral
Last 90 Days0 Trades
ConvictionNone

Net Worth & Trading Activity Over Time

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Monthly Trading Pattern

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Past Insider Trading and Trends

Joseph C. Cook III has an estimated net worth of $8.68 Million. This is based on reported shares in CASTLE BIOSCIENCES INC.



2019 was Joseph C. Cook III's most active year for acquiring shares with 3 total transactions. Joseph C. Cook III's most active month to acquire stocks was the month of June. 2020 was Joseph C. Cook III's most active year for disposing of shares, totalling 13 transactions. Joseph C. Cook III's most active month to dispose stocks was the month of November. 2019 saw Joseph C. Cook III paying a total of $569,961.60 for 208,053 shares, this is the most they've acquired in one year. In 2020 Joseph C. Cook III cashed out on 100,000 shares for a total of $5,794,027.35, their largest year based on trade value.

Holdings & Transactions

CSTLcastle biosciences inc
Updated: Mar 22, 2021VIEW QUOTE
Form TypeSEC Filing
$16.00$195.66K772.20KMar 18View
-0.19169.90K$66.14-$11.26M741.31KScheduledDec 16View
-0.0324.66K$59.77-$1.47M911.21KScheduledDec 11View
-0.0878.27K$58.16-$4.57M935.86KScheduledDec 09 - 10View
-0.0447.18K$56.11-$2.65M1.01MScheduledDec 07 - 08View
-0.2450.00K$54.76-$2.74M1.06MScheduledOct 12 - 14View
-0.015.99K$50.06-$300.04K1.11MScheduledSep 09View
-0.13131.10K$47.66-$6.25M1.12MScheduledSep 04 - 08View
-0.0437.56K$46.01-$1.73M1.25MScheduledSep 02 - 03View
-0.0448.54K$45.94-$2.23M1.29MScheduledAug 31 - 01View
-0.0671.94K$46.03-$3.31M1.33MScheduledAug 27 - 28View
-0.0222.60K$45.89-$1.04M1.41MScheduledAug 25 - 26View
-0.0114.89K$45.88-$683.33K1.43MScheduledAug 21 - 24View
-0.0117.37K$45.84-$796.19K1.44MScheduledAug 19 - 20View
-0.0562.99K$43.54-$2.74M1.46MScheduledJul 09View
-0.00100.00$43.11-$4.31K1.52MScheduledJun 24View
-0.0452.69K$43.20-$2.28M1.52MScheduledJun 19 - 23View
-0.0573.94K$41.71-$3.08M1.58MScheduledJun 17 - 18View
-0.0224.95K$39.60-$987.81K1.65MScheduledJun 15 - 16View
-0.002.11K$39.00-$82.21K1.68MScheduledJun 10View
8.00K8.00KJun 04View
-0.004.36K$39.01-$170.16K1.68MScheduledJun 02View
-0.08143.97K$39.06-$14.49K1.68MScheduledJun 01View
-0.0115.52K$38.66-$600.01K1.83MScheduledMay 28View
-0.0236.33K$38.28-$1.39M1.84MScheduledMay 26 - 27View
-0.0122.62K$37.37-$845.27K1.88MScheduledMay 21 - 22View
-0.0110.98K$37.09-$407.44K1.90MScheduledMay 19 - 20View
-0.0232.12K$37.13-$1.19M1.91MScheduledMay 15 - 18View
-0.0110.92K$36.91-$403.06K1.94MScheduledMay 12 - 13View
0.004.93K$14.941.95MJul 29View
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