Graham Holdings Company Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 47.95. In total, the insiders bought 228.63K and sold 101.49K GHC 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)
47.95
Buy 228.63K shares
Sell 101.49K shares
75% Buy Activity
Moderate Negative Correlation
Sell Signal Low Confidence
May 26, 2026

Analysis Breakdown:

  • Signal is highly questionable due to a strongly contradictory positive Insider Power Score of 47.95.
  • Partially supported by a negative historical correlation.
  • Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date Type Person Role Amount
Aug 19, 2025
Sell
Class B Common Stock
F-InKind
Maas, Jacob
Executive Vp
Officer 1 752
Value: $1.88M
Aug 19, 2025
Buy
Class B Common Stock
M-Exempt
Maas, Jacob
Executive Vp
Officer 2 000
Value: $1.61M
Jul 30, 2025
Sell
Class B Common Stock
S-Sale
Allen Tony
Director
Director 7
Value: $7K
Jul 01, 2025
Buy
Class B Common Stock
A-Award
Mulcahy Anne M
Director
Director 26
Value: $24.8K
Jul 01, 2025
Buy
Class B Common Stock
A-Award
Conley Danielle Y.
Director
Director 23
Value: $22.0K
Jul 01, 2025
Buy
Class B Common Stock
A-Award
Wagoner G Richard Jr
Director
Director 26
Value: $24.8K
Jul 01, 2025
Buy
Class B Common Stock
A-Award
Davis Christopher C
Director
Director 28
Value: $26.7K
Jul 01, 2025
Buy
Class B Common Stock
A-Award
Markell Jack A.
Director
Director 9
Value: $9K
Jul 01, 2025
Buy
Class B Common Stock
A-Award
Markell Jack A.
Director
Director 9
Value: $9K
Jul 01, 2025
Buy
Class B Common Stock
A-Award
Davis Christopher C
Director
Director 28
Value: $26.7K
Jul 01, 2025
Buy
Class B Common Stock
A-Award
Wagoner G Richard Jr
Director
Director 26
Value: $24.8K
Jul 01, 2025
Buy
Class B Common Stock
A-Award
Conley Danielle Y.
Director
Director 23
Value: $22.0K
Jul 01, 2025
Buy
Class B Common Stock
A-Award
Mulcahy Anne M
Director
Director 26
Value: $24.8K
Apr 01, 2025
Buy
Class B Common Stock
A-Award
Markell Jack A.
Director
Director 9
Value: $9K
Apr 01, 2025
Buy
Class B Common Stock
A-Award
Mulcahy Anne M
Director
Director 25
Value: $24.3K
Apr 01, 2025
Buy
Class B Common Stock
A-Award
Davis Christopher C
Director
Director 28
Value: $27.2K
Apr 01, 2025
Buy
Class B Common Stock
A-Award
Conley Danielle Y.
Director
Director 23
Value: $22.3K
Apr 01, 2025
Buy
Class B Common Stock
A-Award
Wagoner G Richard Jr
Director
Director 25
Value: $24.3K
Apr 01, 2025
Buy
Class B Common Stock
A-Award
Wagoner G Richard Jr
Director
Director 25
Value: $24.3K
Apr 01, 2025
Buy
Class B Common Stock
A-Award
Conley Danielle Y.
Director
Director 23
Value: $22.3K
Apr 01, 2025
Buy
Class B Common Stock
A-Award
Davis Christopher C
Director
Director 28
Value: $27.2K
Apr 01, 2025
Buy
Class B Common Stock
A-Award
Mulcahy Anne M
Director
Director 25
Value: $24.3K
Apr 01, 2025
Buy
Class B Common Stock
A-Award
Markell Jack A.
Director
Director 9
Value: $9K
Jan 27, 2025
Buy
Class B Common Stock
A-Award
Maas, Jacob
Executive Vp
Officer 1 000
Value: $919.5K
Jan 27, 2025
Sell
Class B Common Stock
F-InKind
Maas, Jacob
Executive Vp
Officer 438
Value: $402.2K

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

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ABOUT GRAHAM HOLDINGS COMPANY
Graham Holdings Company
Graham Holdings Company, through its subsidiaries, operates as a diversified education and media company worldwide. It provides test preparation services and materials; data science and training services; professional training and exam preparation for professional certifications and licensures; and non-academic operations support services to the Purdue University Global. The company also offers training, test preparation, and degrees for accounti...
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