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Insider · CIK 0001655513

Jacob Maas

officer

Files at GHC (Graham Holdings Co). First filing -, latest -.

Jacob Maas files SEC Form 4 as officer at GHC (Graham Holdings Co). No open-market trade is on file; the transactions below are grants, exercises and other rows that carry no view on the price.

A track record needs three past buys with six months of prices behind them; Jacob Maas has 0, so none is measured yet.

Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 0
$0 bought, $0 sold

Signals

This insider’s open-market buys and sells, scored.

No scored open-market trades yet.

Transactions

Every row this insider has filed, 12 in all, newest first.

DateCompanyTransactionSharesPriceValueHoldings afterFiled
Jan 16, 2026GHC
Graham Holdings Co
AGrant or award
Class B Common Stock
+1,000$0.00$07,034Jan 21, 2026
Jan 16, 2026GHC
Graham Holdings Co
FTax withholding
Class B Common Stock
-377$1,150.50$434k6,657Jan 21, 2026
Oct 20, 2025GHC
Graham Holdings Co
AGrant or award
Class B Common Stock
+1,000$0.00$06,535Oct 22, 2025
Oct 20, 2025GHC
Graham Holdings Co
FTax withholding
Class B Common Stock
-501$987.72$495k6,034Oct 22, 2025
Aug 19, 2025GHC
Graham Holdings Co
MOption exercise
Class B Common Stock
+2,000$804.80$1.6M7,287Aug 21, 2025
Aug 19, 2025GHC
Graham Holdings Co
FTax withholding
Class B Common Stock
-1,752$1,071.80$1.9M5,535Aug 21, 2025
Aug 19, 2025GHC
Graham Holdings Co
MOption exercise
Employee Stock Option (right to buy)derivative
-2,000$0.00$00Aug 21, 2025
Jan 27, 2025GHC
Graham Holdings Co
AGrant or award
Class B Common Stock
+1,000$0.00$05,725Jan 29, 2025
Jan 27, 2025GHC
Graham Holdings Co
FTax withholding
Class B Common Stock
-438$918.26$402k5,287Jan 29, 2025
Jan 2, 2025GHC
Graham Holdings Co
AGrant or award
Class B Common Stock
+430$0.00$04,982Jan 6, 2025
Jan 2, 2025GHC
Graham Holdings Co
FTax withholding
Class B Common Stock
-257$871.87$224k4,725Jan 6, 2025
Nov 5, 2024GHC
Graham Holdings Co
AGrant or award
Class B Common Stock
+1,000$0.00$04,552Nov 8, 2024

Questions about Jacob Maas

Answered from the filings on this page, as of the latest one.

Is Jacob Maas buying or selling?

Jacob Maas has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.

How did Jacob Maas's past buys perform?

Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Jacob Maas has 0.

Where does Jacob Maas file Form 4?

Jacob Maas has filed Form 4 at GHC (Graham Holdings Co) as Executive VP. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Jacob Maas: insider trades and track record | InsiderTell