Evidence in favour
- 8 distinct acquisition events survive duplicate and security-type controls.
- Participation spans 10 named insiders rather than one filing source.
Company insider dossier
Graham Holdings Co insider intelligence
GHC filings assessed for conviction, transaction quality, insider breadth, clustering, freshness, and price confirmation.
79/100
Conviction accumulation
81/100 confidence- Exchange
- NYSE
- Sector
- Consumer Defensive
- Industry
- Education & Training Services
- Latest evidence
- 28 Aug 2026
Investment committee read
Conviction accumulation
Priced common-share acquisitions carry more weighted evidence than disposals after freshness, role, size, and duplicate controls.
Research constructive setupsDecision risks
- Reported purpose is unavailable in this feed, so even priced common-share transactions need filing context.
Price confirmation map
Weekly price with common-share events
Acquisitions and disposals are aligned to the nearest completed weekly bar.
Mar 2025Sep 2026
Weekly closeCommon-share acquisitionCommon-share disposal
Market confirmation
Price and trend context
- Latest close
- 1,138.57 USD
- One-week move
- +0.2%
- Four-week move
- -4.4%
- Fair-value gap
- +25.4%
- Trend signal
- Active
- Relative strength
- -6.1
Directional balance
Controlled event mix
88.9%acquisition
- Acquisition events
- 8
- Disposal events
- 1
- Net value
- -$368.9K
Cadence
Twelve-week filing pressure
Volume shows attention. Controlled events determine direction.
529 Jun
006 Jul
013 Jul
020 Jul
027 Jul
003 Aug
510 Aug
017 Aug
224 Aug
031 Aug
007 Sep
014 Sep
Named participants
Insider conviction by person
CONLEY, DANIELLE Y.Director752 events
DAVIS, CHRISTOPHER CDirector752 events
MARKELL, JACK A.Director752 events
MULCAHY, ANNE MDirector752 events
WAGONER, G RICHARD JRDirector752 events
O'SHAUGHNESSY, LAURA10% Owner500 events
O'SHAUGHNESSY, TIMOTHY JDirector, President and CEO500 events
GRAHAM, DONALDDirector, 10% Owner500 events
WEYMOUTH, KATHARINEDirector500 events
MAAS,, JACOBExecutive VP281 events
Evidence quality
Security and transaction context
Role architecture
Who is participating
Transaction evidence
Auditable GHC filing ledger
Showing 1 to 25 of 25.
MAAS,, JACOBExecutive VP
AcquisitionCommon equity
1000 sharesClass B Common Stock
Not reportedContext evidence
MAAS,, JACOBExecutive VP
DisposalCommon equity
501 sharesClass B Common Stock
$580.8KDirectional evidence
GRAHAM, DONALDDirector, 10% Owner
DisposalCommon equity
12633 sharesClass A Common Stock
Not reportedContext evidence
O'SHAUGHNESSY, LAURA10% Owner
AcquisitionCommon equity
4211 sharesClass A Common Stock
Not reportedContext evidence
O'SHAUGHNESSY, LAURA10% Owner
DisposalCommon equity
4211 sharesClass B Common Stock
Not reportedContext evidence
O'SHAUGHNESSY, TIMOTHY JDirector, President and CEO
AcquisitionCommon equity
4211 sharesClass A Common Stock
Not reportedContext evidence
O'SHAUGHNESSY, TIMOTHY JDirector, President and CEO
DisposalCommon equity
4211 sharesClass B Common Stock
Not reportedContext evidence
DAVIS, CHRISTOPHER CDirector
AcquisitionCommon equity
23 sharesClass B Common Stock
$26.7KDirectional evidence
MULCAHY, ANNE MDirector
AcquisitionCommon equity
21 sharesClass B Common Stock
$24.4KDirectional evidence
WAGONER, G RICHARD JRDirector
AcquisitionCommon equity
21 sharesClass B Common Stock
$24.4KDirectional evidence
CONLEY, DANIELLE Y.Director
AcquisitionCommon equity
19 sharesClass B Common Stock
$22.1KDirectional evidence
MARKELL, JACK A.Director
AcquisitionCommon equity
7 sharesClass B Common Stock
$8.1KDirectional evidence
O'SHAUGHNESSY, LAURA10% Owner
DisposalCommon equity
5600 sharesClass B Common Stock
Not reportedContext evidence
O'SHAUGHNESSY, LAURA10% Owner
DisposalCommon equity
400 sharesClass B Common Stock
Not reportedContext evidence
O'SHAUGHNESSY, LAURA10% Owner
AcquisitionCommon equity
6000 sharesClass A Common Stock
Not reportedContext evidence
O'SHAUGHNESSY, TIMOTHY JDirector, President and CEO
DisposalCommon equity
5600 sharesClass B Common Stock
Not reportedContext evidence
O'SHAUGHNESSY, TIMOTHY JDirector, President and CEO
AcquisitionCommon equity
6000 sharesClass A Common Stock
Not reportedContext evidence
O'SHAUGHNESSY, TIMOTHY JDirector, President and CEO
DisposalCommon equity
400 sharesClass B Common Stock
Not reportedContext evidence
WEYMOUTH, KATHARINEDirector
AcquisitionCommon equity
6000 sharesClass B Common Stock
Not reportedContext evidence
WEYMOUTH, KATHARINEDirector
DisposalCommon equity
6000 sharesClass A Common Stock
Not reportedContext evidence
DAVIS, CHRISTOPHER CDirector
AcquisitionCommon equity
25 sharesClass B Common Stock
$26.5KDirectional evidence
MULCAHY, ANNE MDirector
AcquisitionCommon equity
23 sharesClass B Common Stock
$24.4KDirectional evidence
WAGONER, G RICHARD JRDirector
AcquisitionCommon equity
23 sharesClass B Common Stock
$24.4KDirectional evidence
CONLEY, DANIELLE Y.Director
AcquisitionCommon equity
21 sharesClass B Common Stock
$22.3KDirectional evidence
MARKELL, JACK A.Director
AcquisitionCommon equity
8 sharesClass B Common Stock
$8.5KDirectional evidence
Reading the dossier
Direction and confidence are separate
Conviction
The 0 to 100 score classifies deduplicated priced common-share evidence. Fifty is balanced or non-directional.
Confidence
Confidence rises with controlled event depth, named-insider breadth, fresh evidence, normalized values, and a longer observation span.
Disposals
Selling is not treated as the mirror image of buying. It carries less directional weight because taxes, diversification, compensation, and planned transactions can all create sales.
Price confirmation
The market chart tests whether the filing thesis is being confirmed or rejected by price, fair-value position, relative strength, and the current trend state.
Independent market research for education. This classification is not investment advice, a recommendation, a forecast, or an execution instruction.