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Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Latest filing published 31 Aug 2026 for Graham Holdings Co. Read the official filing
Insider track record
Disclosed buys
0
Disclosed sells
0
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
No signal scores available.
Jacob Maas: trading record in brief
All filings by Jacob Maas on record concern Graham Holdings Co, in the capacity of senior executive. We count 11 filings; the first trade dates from 19 January 2022 and the latest from 28 August 2026.
Not one of the filings records a straightforward purchase or sale on the market. Grants and option exercises follow pay plans set in advance, so they reveal less about an insider's own view than a purchase made with personal money.
The latest filing, published on 31 August 2026, reports a share grant in Graham Holdings Co. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 3 days. Section 16 rules allow two business days to file each Form 4. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.
Companies and markets linked to Jacob Maas
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations11 total
1,000 shares0Class B Common StockSEC:0000950157-26-000967:0
501 shares@ US$1,159.23Class B Common StockSEC:0000950157-26-000967:1
1,000 shares0Class B Common StockSEC:0001628280-26-002885:0
1,000 shares0Class B Common StockSEC:0001628280-25-045868:0
2,000 shares@ US$804.80100.0% of flowClass B Common StockSEC:0001655513-25-000003:0
1,000 shares0Class B Common StockSEC:0000104889-25-000012:0
430 shares0Class B Common StockSEC:0000104889-25-000009:0
1,000 shares0Class B Common StockSEC:0000104889-24-000067:0
616 shares0Class B Common StockSEC:0000104889-23-000008:0
1,000 shares0Class B Common StockSEC:0000104889-22-000004:0
1,000 shares0Class A Common StockSEC:0000104889-22-000002:0
11 of 11 declarations
