CMCSA
COMCAST CORP · Transportation & Utilities · Market cap $85.3B
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$2.3M
reported sales (SEC code S)
Unique Insiders
3
in the rolling window
Latest filing
Sep 3, 2026
Armstrong Jason
COMCAST CORP (CMCSA) has 51 SEC Form 4 filings (88 transaction rows) in the rolling window, disclosed by 3 distinct insiders. Most recent filing: Sep 3, 2026.
Inside the rolling window, 3 insiders at COMCAST CORP reported no open-market purchases and 3 open-market sales totaling $2.3M. The most recent open-market filing is a sale of 4,494 shares by CFO Armstrong Jason, dated Mar 5, 2026, worth $143K.
- Industry:Telecommunications Services
- CEO:Brian L. Roberts
- Employees:179,000
- HQ:Philadelphia, PA, US
- IPO:1980-03-17
| Source | |||||||
|---|---|---|---|---|---|---|---|
Armstrong JasonFirst filing | CFO | Sale | 4,494 | $143K | Mar 6 | -25.6% | SEC ↗ |
Cavanagh Michael JFirst filing | Co-CEO | Sale | 57,947 | $1.9M | Feb 13 | -24.8% | SEC ↗ |
NAKAHARA ASUKAFirst filing | Director | Sale | 8,275 | $246K | Feb 4 | -22.2% | SEC ↗ |
Congress trading CMCSA 250 all-time
- DRep. Gilbert CisnerosSale$1,001 - $15,0002026-07-17
- DRep. Gilbert Ray CisnerosOther$1,001 - $15,0002026-07-16
- DRep. Ro KhannaPurchase$1,001 - $15,0002026-07-07
- RRep. Kevin HernSale$1,001 - $15,0002026-08-05
- DRep. Gilbert CisnerosPurchase$1,001 - $15,0002026-06-16
- DRep. Gilbert Ray CisnerosPurchase$1,001 - $15,0002026-06-16
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does CMCSA have?
COMCAST CORP (CMCSA) has 51 SEC Form 4 filings (88 transaction rows) in the rolling 365-day window, disclosed by 3 distinct insiders. Most recent filing: Sep 3, 2026.
When was the most recent SEC Form 4 filing for CMCSA?
The most recent Form 4 filing for CMCSA on Tracefour is dated Sep 3, 2026.
What is the total insider buy and sell value at CMCSA in the current window?
Inside the rolling window, insiders at CMCSA bought $0 and sold $2.3M based on SEC Form 4 filings.
Can I get alerts for CMCSA insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at COMCAST CORP (CMCSA). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
COMCAST CORP is in the Transportation & Utilities sector.