NASDAQ:CMCSA

Comcast Stock Insider Trading

Communication Services > Telecommunications Services

Buy CMCSA

*Your capital is at risk

$23.96

+0.290 (+1.23%)

At Close: Jul 31, 2026

Comcast Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 26.92. In total, the insiders bought 5.11B and sold 2.24B CMCSA shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	26.92
● Buy	5.11B shares
● Sell	2.24B shares
71% Buy Activity Moderate Negative Correlation
Buy Signal Medium Confidence Feb 24, 2026 Analysis Breakdown: Supported by a positive Insider Power Score of 26.92. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Feb 11, 2026 Buy	Option to Purchase M-Exempt	Cavanagh Michael J Co-ceo	CEO / President	441 743 Value: $12.5M
Feb 04, 2026 Buy	Common Stock J-Other	Smith Gordon	Director	0 Value: $0
Feb 04, 2026 Buy	Class A Common Stock A-Award	Smith Gordon Director	Director	7 869 Value: $240.0K
Feb 03, 2026 Sell	Class A Common Stock S-Sale	Nakahara Asuka Director	Director	8 275 Value: $245.8K
Feb 02, 2026 Sell	Restricted Stock Units I-Discretionary	Cavanagh Michael J Co-ceo	CEO / President	50 320 Value: $0
Feb 02, 2026 Buy	Restricted Stock Units A-Award	Murdock Daniel C. EVP & Chief Accounting Officer	Officer	57 452 Value: $1.70M
Jan 20, 2026 Sell	Phantom Stock I-Discretionary	Reid Thomas J. Chief Legal Officer, Secretary	Officer	2 233 Value: $0
Jan 20, 2026 Buy	Restricted Stock Units M-Exempt	Reid Thomas J. Chief Legal Officer, Secretary	Officer	12 319 Value: $346.9K
Jan 20, 2026 Sell	Class A Common Stock F-InKind	Reid Thomas J. Chief Legal Officer, Secretary	Officer	4 676 Value: $131.2K
Jan 20, 2026 Buy	Restricted Stock Units M-Exempt	Murdock Daniel C. EVP & Chief Accounting Officer	Officer	1 609 Value: $45.3K
Jan 20, 2026 Buy	Class A Common Stock A-Award	Brady Louise F. Director	Director	1 190 Value: $33.5K
Jan 20, 2026 Buy	Class A Common Stock A-Award	Honickman Jeffrey A Director	Director	1 542 Value: $43.4K
Jan 20, 2026 Buy	Class A Common Stock A-Award	Breen Edward D Director	Director	705 Value: $19.9K
Jan 20, 2026 Buy	Class A Common Stock A-Award	Baltimore Thomas J Jr Director	Director	1 190 Value: $33.5K
Jan 20, 2026 Buy	Class A Common Stock M-Exempt	Murdock Daniel C. EVP & Chief Accounting Officer	Officer	1 609 Value: $45.3K
Jan 20, 2026 Sell	Class A Common Stock F-InKind	Murdock Daniel C. EVP & Chief Accounting Officer	Officer	478 Value: $13.6K
Jan 20, 2026 Buy	Class A Common Stock M-Exempt	Armstrong Jason CFO	C-Suite Officer	8 150 Value: $229.5K
Jan 20, 2026 Sell	Class A Common Stock F-InKind	Armstrong Jason CFO	C-Suite Officer	3 950 Value: $112.3K
Jan 20, 2026 Buy	Restricted Stock Units M-Exempt	Armstrong Jason CFO	C-Suite Officer	8 150 Value: $229.5K
Jan 20, 2026 Buy	Class A Common Stock M-Exempt	Bell Madeline S. Director	Director	5 096 Value: $143.5K
Jan 20, 2026 Buy	Phantom Stock M-Exempt	Bell Madeline S. Director	Director	5 096 Value: $143.5K
Jan 20, 2026 Buy	Class A Common Stock M-Exempt	Reid Thomas J. Chief Legal Officer, Secretary	Officer	12 319 Value: $346.9K
Jan 02, 2026 Sell	Phantom Stock I-Discretionary	Cavanagh Michael J Co-ceo	CEO / President	48 439 Value: $0
Nov 20, 2025 Buy	Class A Common Stock A-Award	Novak David C Director	Director	9 013 Value: $240.0K
Nov 20, 2025 Buy	Class A Common Stock A-Award	Nakahara Asuka Director	Director	9 013 Value: $240.0K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT COMCAST CORPORATION

Comcast Corporation operates as a media and technology company worldwide. It operates through Cable Communications, Media, Studios, Theme Parks, and Sky segments. The Cable Communications segment offers broadband, video, voice, wireless, and other services to residential and business customers under the Xfinity brand; and advertising services. The Media segment operates NBCUniversal's television and streaming platforms, including national, region...

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