CMCSA
−$0
202,500 sh
CMCSA
COMCAST CORP
SEC CIK 1166691
$24.50
−18.7% · 90 days
90-day buys
$0
0 open-market
90-day sells
$0
0 open-market
Net insider flow
+$0
Net buying
Filings shown
42
Most recent
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At a glance
Insiders at CMCSA have made no open-market trades in the last 90 days — the activity below is grants, option exercises, and other routine filings.
Largest recent trade: Cavanagh Michael J sold $1.89M of CMCSA, trimming their stake 9%.
Most active filer: Murdock Daniel C., with 7 transactions among the recent filings shown.
Insider transaction history
Form 4 filings for CMCSA, newest firstCMCSA
+$0
32,440 sh
CMCSA
+$0
5,268 sh
CMCSA
−$57.9K
2,073 sh @ $28
CMCSA
+$0
1,176 sh
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CMCSA
+$0
1,524 sh
CMCSA
+$0
697 sh
CMCSA
+$0
1,176 sh
CMCSA
+$0
1,176 sh
CMCSA
+$308.4K
10,867 sh @ $28
CMCSA
−$316.3K
10,514 sh @ $30
CMCSA
+$0
30,000 sh
CMCSA
+$2.09M
73,497 sh @ $28
CMCSA
−$142.6K
4,494 sh @ $32
CMCSA
−$2.19M
69,003 sh @ $32
CMCSA
+$0
45,578 sh
CMCSA
−$1.41M
45,578 sh @ $31
CMCSA
+$0
34,980 sh
CMCSA
−$1.08M
34,980 sh @ $31
CMCSA
+$0
2,724 sh
CMCSA
−$39K
1,260 sh @ $31
CMCSA
−$60.9K
1,967 sh @ $31
CMCSA
−$88.9K
2,873 sh @ $31
CMCSA
+$0
4,540 sh
CMCSA
−$65K
2,099 sh @ $31
CMCSA
−$83.2K
2,688 sh @ $31
CMCSA
−$1.33M
43,060 sh @ $31
CMCSA
+$0
2,270 sh
CMCSA
−$17.1K
553 sh @ $31
CMCSA
−$23.9K
771 sh @ $31
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About CMCSA insider activity
This page tracks every recent Form 4 filed for COMCAST CORP with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.
The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.
Frequently asked questions
How often is CMCSA insider data updated?
Continuously. We read from SEC EDGAR, so new Form 4 filings for COMCAST CORP usually appear here within minutes of being accepted by the SEC.
What does "net insider flow" mean?
It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.
Why do some rows show grants or option exercises instead of buys?
Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.
Is this investment advice?
No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.