Insider · CIK 0001958909
Jason Armstrong
Files at CMCSA (COMCAST CORP). First filing Nov 7, 2024, latest Mar 6, 2026.
Jason Armstrong files SEC Form 4 as CFO at CMCSA (COMCAST CORP). Since Nov 7, 2024, Jason Armstrong has reported 0 open-market buys worth $0 and 2 open-market sells worth $1.2M, the latest filed on Mar 6, 2026.
A track record needs three past buys with six months of prices behind them; Jason Armstrong has 0, so none is measured yet.
The newest scored trade: sold $143k of CMCSA on Mar 5, 2026, filed Mar 6, 2026, scored 18 (weak). In the last 12 months: 0 buys worth $0 and 1 sell worth $143k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
CMCSA: COMCAST CORP
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 18Weak | CMCSAsell COMCAST CORP | $143k 4,494 shares | -3% | +29% from low-7% from high | |
| 37Weak | CMCSAsell COMCAST CORP | $1.0M 23,248 shares | -22% | - |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Mar 5, 2026 | CMCSA COMCAST CORP | 4,494 0.00% of outstanding | $143k | Mar 5, 2026 | none |
| Nov 6, 2024 | CMCSA COMCAST CORP | 23,248 0.00% of outstanding | $1.0M | Nov 6, 2024 | none |
Transactions
Every row this insider has filed, 34 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Mar 5, 2026 | CMCSA COMCAST CORP | MOption exercise Class A Common Stock | +73,497 | $28.38 | $2.1M | 172,400 | Mar 6, 2026 |
| Mar 5, 2026 | CMCSA COMCAST CORP | SOpen-market sale Class A Common Stock | -4,494 | $31.74 | $143k | 167,906 | Mar 6, 2026 |
| Mar 5, 2026 | CMCSA COMCAST CORP | FTax withholding Class A Common Stock | -69,003 | $31.75 | $2.2M | 98,903 | Mar 6, 2026 |
| Mar 5, 2026 | CMCSA COMCAST CORP | MOption exercise Option to Purchasederivative | -73,497 | $28.38 | $2.1M | 0 | Mar 6, 2026 |
| Mar 1, 2026 | CMCSA COMCAST CORP | MOption exercise Class A Common Stock | +93,142 | $0.00 | $0 | 136,397 | Mar 3, 2026 |
| Mar 1, 2026 | CMCSA COMCAST CORP | MOption exercise Class A Common Stock | +5,813 | $0.00 | $0 | 142,210 | Mar 3, 2026 |
| Mar 1, 2026 | CMCSA COMCAST CORP | MOption exercise Class A Common Stock | +4,540 | $0.00 | $0 | 146,750 | Mar 3, 2026 |
| Mar 1, 2026 | CMCSA COMCAST CORP | FTax withholding Class A Common Stock | -2,099 | $30.96 | $65k | 144,651 | Mar 3, 2026 |
| Mar 1, 2026 | CMCSA COMCAST CORP | FTax withholding Class A Common Stock | -2,688 | $30.96 | $83k | 141,963 | Mar 3, 2026 |
| Mar 1, 2026 | CMCSA COMCAST CORP | FTax withholding Class A Common Stock | -43,060 | $30.96 | $1.3M | 98,903 | Mar 3, 2026 |
| Mar 1, 2026 | CMCSA COMCAST CORP | MOption exercise Restricted Stock Unitsderivative | -4,540 | $0.00 | $0 | 18,504 | Mar 3, 2026 |
| Mar 1, 2026 | CMCSA COMCAST CORP | MOption exercise Restricted Stock Unitsderivative | -5,813 | $0.00 | $0 | 12,691 | Mar 3, 2026 |
| Mar 1, 2026 | CMCSA COMCAST CORP | MOption exercise Restricted Stock Unitsderivative | -93,142 | $0.00 | $0 | 0 | Mar 3, 2026 |
| Feb 24, 2026 | CMCSA COMCAST CORP | AGrant or award Restricted Stock Unitsderivative | +93,142 | $0.00 | $0 | 93,142 | Feb 26, 2026 |
| Jan 20, 2026 | CMCSA COMCAST CORP | MOption exercise Class A Common Stock | +8,150 | $0.00 | $0 | 47,205 | Jan 22, 2026 |
| Jan 20, 2026 | CMCSA COMCAST CORP | FTax withholding Class A Common Stock | -3,950 | $28.42 | $112k | 43,255 | Jan 22, 2026 |
| Jan 20, 2026 | CMCSA COMCAST CORP | MOption exercise Restricted Stock Unitsderivative | -8,150 | $0.00 | $0 | 23,044 | Jan 22, 2026 |
| Jun 5, 2025 | CMCSA COMCAST CORP | MOption exercise Class A Common Stock | +9,504 | $0.00 | $0 | 43,087 | Jun 6, 2025 |
| Jun 5, 2025 | CMCSA COMCAST CORP | FTax withholding Class A Common Stock | -4,032 | $34.22 | $138k | 39,055 | Jun 6, 2025 |
| Jun 5, 2025 | CMCSA COMCAST CORP | MOption exercise Restricted Stock Unitsderivative | -9,504 | $0.00 | $0 | 29,624 | Jun 6, 2025 |
| Mar 1, 2025 | CMCSA COMCAST CORP | MOption exercise Class A Common Stock | +4,312 | $0.00 | $0 | 33,796 | Mar 4, 2025 |
| Mar 1, 2025 | CMCSA COMCAST CORP | MOption exercise Class A Common Stock | +2,070 | $0.00 | $0 | 35,866 | Mar 4, 2025 |
| Mar 1, 2025 | CMCSA COMCAST CORP | FTax withholding Class A Common Stock | -958 | $35.88 | $34k | 34,908 | Mar 4, 2025 |
| Mar 1, 2025 | CMCSA COMCAST CORP | FTax withholding Class A Common Stock | -1,994 | $35.88 | $72k | 32,914 | Mar 4, 2025 |
| Mar 1, 2025 | CMCSA COMCAST CORP | MOption exercise Restricted Stock Unitsderivative | -2,070 | $0.00 | $0 | 43,440 | Mar 4, 2025 |
| Mar 1, 2025 | CMCSA COMCAST CORP | MOption exercise Restricted Stock Unitsderivative | -4,312 | $0.00 | $0 | 39,128 | Mar 4, 2025 |
| Jan 14, 2025 | CMCSA COMCAST CORP | MOption exercise Class A Common Stock | +7,740 | $0.00 | $0 | 33,064 | Jan 15, 2025 |
| Jan 14, 2025 | CMCSA COMCAST CORP | FTax withholding Class A Common Stock | -3,580 | $36.38 | $130k | 29,484 | Jan 15, 2025 |
| Jan 14, 2025 | CMCSA COMCAST CORP | MOption exercise Restricted Stock Unitsderivative | -7,740 | $0.00 | $0 | 45,510 | Jan 15, 2025 |
| Nov 6, 2024 | CMCSA COMCAST CORP | MOption exercise Class A Common Stock | +68,200 | $29.73 | $2.0M | 103,524 | Nov 7, 2024 |
| Nov 6, 2024 | CMCSA COMCAST CORP | SOpen-market sale Class A Common Stock | -10,000 | $44.86 | $449k | 93,524 | Nov 7, 2024 |
| Nov 6, 2024 | CMCSA COMCAST CORP | SOpen-market sale Class A Common Stock | -13,248 | $44.83 | $594k | 80,276 | Nov 7, 2024 |
| Nov 6, 2024 | CMCSA COMCAST CORP | FTax withholding Class A Common Stock | -54,952 | $44.86 | $2.5M | 25,324 | Nov 7, 2024 |
| Nov 6, 2024 | CMCSA COMCAST CORP | MOption exercise Option to Purchasederivative | -68,200 | $29.73 | $2.0M | 0 | Nov 7, 2024 |
Questions about Jason Armstrong
Answered from the filings on this page, as of the latest one.
Is Jason Armstrong buying or selling?
In the last 12 months Jason Armstrong reported 0 open-market buys worth $0 and 1 open-market sell worth $143k on SEC Form 4; the latest was sold $143k of CMCSA on Mar 5, 2026. Grants, option exercises and tax withholding are not counted.
How did Jason Armstrong's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Jason Armstrong has 0.
Where does Jason Armstrong file Form 4?
Jason Armstrong has filed Form 4 at CMCSA (COMCAST CORP) as CFO. 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.