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CMCSA — COMCAST CORP

Communication Services · Cable & Other Pay Television Services · Nasdaq

CIK 0001166691 · FYE 1231 · All Form 4 filings on EDGAR ↗

Formerly: AT&T COMCAST CORP (until 2002-11-18)

2Insiders filing

4Transactions

+$0Reported buys

−$35.3MReported sells

0Cluster events

Window in data: 2026-09-01 → 2026-09-02 · Data as of 2026-09-04

Insiders

Insider	Role	Txns	Reported value
Cavanagh Michael J	Co-CEO	2	$25.2M
ROBERTS BRIAN L	Chairman of Board & Co-CEO	2	$10.1M

Transaction history

Filing date	Trade date	Ticker	Insider	Type	Shares	Price	Value	Cluster
2026-09-03	2026-09-02	CMCSA	ROBERTS BRIAN L Chairman of Board & Co-CEO	G	101,900	—	—	—
2026-09-03	2026-09-01	CMCSA	Cavanagh Michael J Co-CEO	I routine	392,769	$26.30	−$10.3M	—
2026-09-03	2026-09-01	CMCSA	Cavanagh Michael J Co-CEO	I routine	565,642	$26.30	−$14.9M	—
2026-09-03	2026-09-01	CMCSA	ROBERTS BRIAN L Chairman of Board & Co-CEO	I routine	382,860	$26.30	−$10.1M	—

Known data limitations

Form 4 lag: insiders have 2 business days to file after a trade (weekends and holidays extend this), and this site re-ingests once daily — a transaction can appear here roughly three business days after it happened.
13F lag: quarterly 13F-HR holdings cover the prior quarter-end and are due 45 days after it — every institutional position shown here is at least 45 days old by construction, often more.
CUSIP→ticker gaps: 13F positions are reported by CUSIP; some holdings cannot be matched to a current ticker (delistings, corporate actions, thin metadata) and appear without one or are omitted from ticker-level views.
EDGAR timing variability: institutions file at different hours and days within their windows; amended filings (4/A, 13F-HR/A) can restate earlier periods, so historical aggregates may change between batches.

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