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Comcast Corp. (CMCSA)

Comcast Corp. (CMCSA) Insider Trading

Directors, officers and holders of more than 10% of CMCSA report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 272 transactions on file: 0 with code P, 1 with code S and 49 with other codes.

DateInsiderCodeShares
Sep 30, 2026Baltimore Thomas J JrA Award1,552
Sep 30, 2026Honickman Jeffrey AA Award2,011
Sep 30, 2026Smith GordonA Award1,552
Sep 30, 2026BREEN EDWARD DA Award920
Sep 30, 2026Brady Louise F.A Award1,552
Sep 2, 2026ROBERTS BRIAN LG Gift101,900
Sep 1, 2026ROBERTS BRIAN LI Discretionary382,860
Sep 1, 2026Cavanagh Michael JI Discretionary565,642
Sep 1, 2026Cavanagh Michael JI Discretionary392,769
Aug 17, 2026BREEN EDWARD DG Gift62,440
Aug 5, 2026ROBERTS BRIAN LG Gift204,100
Jun 30, 2026BREEN EDWARD DA Award815
Jun 30, 2026Baltimore Thomas J JrA Award1,375
Jun 30, 2026Smith GordonA Award1,375
Jun 30, 2026Brady Louise F.A Award1,375
Jun 30, 2026Honickman Jeffrey AA Award1,783
May 19, 2026ROBERTS BRIAN LG Gift202,500
May 11, 2026BREEN EDWARD DG Gift32,440
Apr 3, 2026Murdock Daniel C.F Tax Payment2,073
Apr 3, 2026Murdock Daniel C.M Exercise5,268
Apr 3, 2026Murdock Daniel C.M Exercise5,268
Mar 31, 2026Smith GordonA Award1,176
Mar 31, 2026Baltimore Thomas J JrA Award1,176
Mar 31, 2026Brady Louise F.A Award1,176
Mar 31, 2026BREEN EDWARD DA Award697
Mar 31, 2026Honickman Jeffrey AA Award1,524
Mar 17, 2026Khoury JenniferF Tax Payment10,514
Mar 17, 2026BREEN EDWARD DG Gift30,000
Mar 17, 2026Khoury JenniferM Exercise10,867
Mar 17, 2026Khoury JenniferM Exercise10,867
Mar 5, 2026Armstrong JasonF Tax Payment69,003
Mar 5, 2026Armstrong JasonM Exercise73,497
Mar 5, 2026Armstrong JasonS Sale4,494
Mar 5, 2026Armstrong JasonM Exercise73,497
Mar 1, 2026Armstrong JasonM Exercise93,142
Mar 1, 2026Armstrong JasonF Tax Payment43,060
Mar 1, 2026Armstrong JasonM Exercise5,813
Mar 1, 2026Armstrong JasonF Tax Payment2,688
Mar 1, 2026Murdock Daniel C.M Exercise4,060
Mar 1, 2026Murdock Daniel C.F Tax Payment771
Mar 1, 2026Murdock Daniel C.M Exercise3,163
Mar 1, 2026Murdock Daniel C.F Tax Payment944
Mar 1, 2026Armstrong JasonM Exercise4,540
Mar 1, 2026Murdock Daniel C.M Exercise3,875
Mar 1, 2026Cavanagh Michael JF Tax Payment34,980
Mar 1, 2026Armstrong JasonF Tax Payment2,099
Mar 1, 2026ROBERTS BRIAN LM Exercise45,578
Mar 1, 2026Murdock Daniel C.M Exercise2,270
Mar 1, 2026ROBERTS BRIAN LF Tax Payment45,578
Mar 1, 2026Cavanagh Michael JM Exercise34,980

The full Form 4 history is on the CMCSA company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.