Latest filingSep 03, 2026Most recent Form 4
CMCSA
COMCAST CORP
NasdaqCommunication ServicesCable & Other Pay Television Services
Insider activity for last month from 08/04 to 09/04. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$00 sells
Net open-market+$02 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period3transactions
- G · Gifts · dominant2 · 67%
- I · Code I1 · 33%
Activity by reported role
A joint filing can contribute to multiple roles5transactions
- CC · dominant2 · 40%
- CHAIR2 · 40%
- Director1 · 20%
Distinct insiders active
Reporting-owner CIKs by month · peak Aug 2026 (1)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeBreen Edward DClass A Common Stock · Direct
27,337.277Aug 17, 2026
Roberts Brian LRestricted Stock Units · Direct
0Sep 01, 2026
Roberts Brian LClass A Common Stock · Direct
5,391,826Sep 02, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 04 → Sep 04
LessMore
Top insiders
By absolute net value across the selected period- RL-$10.1M
- BD+$0
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
CMCSA transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| CMCSA | ROBERTS BRIAN L | CHAIRCC | unknown | 382k | -$1.00B | I | — | 0.0% | 09/03 | 09/01 |
| CMCSA | ROBERTS BRIAN L | CHAIRCC | gift | 101k | $0 | G | — | 0.0% | 09/03 | 09/02 |
| CMCSA | BREEN EDWARD D | DIR | gift | 62.4k | $0 | G | +0.4% | 08/18 | 08/17 |
COMCAST CORP Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at COMCAST CORP?
ROBERTS BRIAN L, BREEN EDWARD D.
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
No code-S sale is available for this period.
What is the recent purchase and sale balance?
No code-P purchases or code-S sales were reported in the selected period.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.