CMCSA
Comcast Corporation
Comcast Corporation insider trading
Comcast Corporation files with the SEC as a Cable & Other Pay Television Services company headquartered in Philadelphia, PA. Every time one of its executives or directors buys or sells the stock, the filing appears here the moment it reaches the SEC — with grants and option exercises set apart from the trades that cost the insider their own money.
From SEC filings
Recent CMCSA insider transactions
One insider traded CMCSA on the open market on Mar 05, 2026 — 1 sale worth $142.6K.
- Bought
- —
- Sold
- $142.6K
- Net
- −$142.6K
- Insiders
- 1
none on a 10b5-1 plan
Armstrong Jason
CFO
−$142.6K
Mar 05, 2026
4,494 sh · $31.74
| Date | Insider | Shares | Price | Value |
|---|---|---|---|---|
| Mar 05, 2026 | Armstrong JasonCFO | 4,494 | $31.74 | −$142.6K |
SEC Form 4 data, Q3 2024 to Q2 2026
CMCSA insider trading by quarter
Between Jul 01, 2024 and Jun 30, 2026, 5 insiders traded CMCSA on the open market: 0 purchases and 10 sales worth $29.7M. In the last four quarters alone: 0 purchases and 3 sales ($2.3M), by 3 insiders.
| Quarter | Bought | Sold | Insiders |
|---|---|---|---|
| Q2 2026 | — | — | |
| Q1 2026 | — | −$2.3M3 sales | |
| Q4 2025 | — | — | |
| Q3 2025 | — | — | |
| Q2 2025 | — | — | |
| Q1 2025 | — | — | |
| Q4 2024 | — | −$27.4M7 sales | |
| Q3 2024 | — | — |
- Largest sale
- −$10.1M of CMCSA by Roberts Brian L (Chairman of Board & CEO · Director) on Nov 27, 2024.
Open-market transactions through Jun 30, 2026most recent first
Armstrong Jason
CFO
−$142.6K
Mar 05, 2026
4,494 sh · $31.74
Cavanagh Michael J
Co-CEO · Director
−$1.9M
Feb 11, 2026
57,947 sh · $32.66
Nakahara Asuka
Director
−$245.8K
Feb 03, 2026
8,275 sh · $29.70
Roberts Brian L
Chairman of Board & CEO · Director
−$10.1M
Nov 27, 2024
235,051 sh · $42.80
Roberts Brian L
Chairman of Board & CEO · Director
−$10M
Nov 26, 2024
234,464 sh · $42.66
Cavanagh Michael J
President
−$4.6M
Nov 26, 2024
107,622 sh · $42.53
Cavanagh Michael J
President
−$1.1M
Nov 26, 2024
25,537 sh · $42.59
Bacon Kenneth J
Director
−$625.2K
Nov 22, 2024
14,408 sh · $43.39
Armstrong Jason
CFO
−$593.9K
Nov 06, 2024
13,248 sh · $44.83
Armstrong Jason
CFO
−$448.6K
Nov 06, 2024
10,000 sh · $44.86
| Date | Insider | Shares | Price | Value |
|---|---|---|---|---|
| Mar 05, 2026 | Armstrong JasonCFO | 4,494 | $31.74 | −$142.6K |
| Feb 11, 2026 | Cavanagh Michael JCo-CEO · Director | 57,947 | $32.66 | −$1.9M |
| Feb 03, 2026 | Nakahara AsukaDirector | 8,275 | $29.70 | −$245.8K |
| Nov 27, 2024 | Roberts Brian LChairman of Board & CEO · Director | 235,051 | $42.80 | −$10.1M |
| Nov 26, 2024 | Roberts Brian LChairman of Board & CEO · Director | 234,464 | $42.66 | −$10M |
| Nov 26, 2024 | Cavanagh Michael JPresident | 107,622 | $42.53 | −$4.6M |
| Nov 26, 2024 | Cavanagh Michael JPresident | 25,537 | $42.59 | −$1.1M |
| Nov 22, 2024 | Bacon Kenneth JDirector | 14,408 | $43.39 | −$625.2K |
| Nov 06, 2024 | Armstrong JasonCFO | 13,248 | $44.83 | −$593.9K |
| Nov 06, 2024 | Armstrong JasonCFO | 10,000 | $44.86 | −$448.6K |
From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.
Comcast Corporation company record
- SEC industry classification
- Cable & Other Pay Television Services
- Headquarters
- Philadelphia, PA
- Incorporated in
- PA
- Listed on
- Nasdaq · NYSE
- SEC Central Index Key
- 0001166691
- Previously filed as
- AT&T COMCAST CORP
Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Communication Services sector shown above.
After insiders bought CMCSA
What the stock actually did in the 90 days following each open-market purchase
Don't check CMCSA — let it ping you
Get told the moment an insider moves on CMCSA
Pro watches Comcast Corporation for you and sends a Telegram ping within moments of a Form 4 clearing EDGAR — a C-suite open-market buy, a cluster, a 10b5-1 regime break — long before it reaches the press. Add CMCSA to a watchlist, see each mover's benchmark-measured track record and which legendary funds hold it, and read the full filing history instead of the last 72 hours.
The live dashboard is free to open. Alerts, watchlists, full filing history and each mover's benchmark-measured track record are Pro. Monitoring, not advice.
How to read CMCSA insider activity
- Open-market purchase (code P)
- An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.
- Grants and option exercises (codes A, M)
- Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.
- Cluster buy
- Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.
Other Communication Services tickers
Questions
- Are CMCSA insiders buying or selling?
- Between Mar 05, 2026 and Mar 05, 2026, 1 Comcast Corporation insider made no open-market purchases and 1 sale worth $142.6K, a net sale of $142.6K.
- How much CMCSA stock have insiders bought and sold in the last two years?
- Between Jul 01, 2024 and Jun 30, 2026, 5 Comcast Corporation insiders made no open-market purchases and 10 sales worth $29.7M. In the four quarters to Jun 30, 2026: no purchases and 3 sales ($2.3M). The largest sale was Roberts Brian L selling $10.1M on Nov 27, 2024.
- What was the largest recent CMCSA insider trade?
- Armstrong Jason (CFO) sold $142.6K of CMCSA stock on Mar 05, 2026 at about $31.73 a share.
- When did an insider last buy CMCSA shares?
- No open-market purchase by a Comcast Corporation insider appears in the filings from Mar 05, 2026 to Mar 05, 2026 — every recorded open-market transaction in that period was a sale.
- Where does CMCSA insider trading data come from?
- From the Form 4 filings Comcast Corporation's officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.
Get the free Insider Brief
Each weekday evening: the day's biggest open-market insider buys, cluster formations and 10b5-1 plan breaks — in plain English, with grants and routine vesting stripped out. Honest about what the data can and cannot say.