Jason Armstrong insider trades: Comcast (CMCSA) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Jason reports to the SEC
Open-market buys and sales
3 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Mar 5, 2026 | CMCSA | ↓ Sell | 4,494 | $31.73 | $143K | Direct | Mar 6, 2026 (1d) |
| Nov 6, 2024 | CMCSA | ↓ Sell | 23,248 | $44.84 | $1.0M | Direct | Nov 7, 2024 (1d) |
| Nov 20, 2023 | CMCSA | ↓ Sell | 41,663 | $42.63 | $1.8M | Direct | Nov 22, 2023 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other CMCSA insiders
Open-market trades in the last 12 months
About Jason Armstrong's insider trades
Jason Armstrong is CFO at Comcast (CMCSA). Since Nov 20, 2023, Jason has reported no open-market purchases and 3 sales worth $3.0M on SEC Form 4. In the last 12 months: 1 sale ($143K).
Their filings also include option exercises (20 filings), shares withheld for taxes (20 filings), grants and awards (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every CMCSA insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.