🕵️ Comcast Corp ($CMCSA)
SEC insider & ownership activity, last 12 months · CIK 1166691 · every row links its SEC filing
Over the last 12 months insiders sold $2.3M with no open-market buying against it. Michael J. Cavanagh sold $1.9M in discretionary trades (Feb). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 3 sellers, $2.3M (3 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Michael J. Cavanagh | 0 | – | 1 | $1.9M | Feb 11, 2026 |
| Nakahara Asuka | 0 | – | 1 | $246K | Feb 3, 2026 |
| Armstrong Jason | 0 | – | 1 | $143K | Mar 5, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Vanguard Capital Management | 7.5% | 13G | Apr 29, 2026 | filing ↗ | |
| Capital World Investors | 5.1% | 13G | May 14, 2026 | filing ↗ | |
| State Street Corporation | 5.1% | 13G | Feb 9, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Armstrong Jason | $143K | Mar 5, 2026 | filing ↗ |
| Michael J. Cavanagh | $1.9M | Feb 11, 2026 | filing ↗ |
| Nakahara Asuka | $246K | Feb 3, 2026 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Jul 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 23, 2026 | filing ↗ |
| Other events (8.01) | Jun 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 29, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 10, 2026 | filing ↗ |
| Other events (8.01) | Jun 3, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 3, 2026 | filing ↗ |
| Other events (8.01) | Jun 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 2, 2026 | filing ↗ |
| Other events (8.01) | May 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 27, 2026 | filing ↗ |
| Earnings (2.02) | Apr 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 23, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Mar 16, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 16, 2026 | filing ↗ |
| Officer/director changes (5.02) | Feb 25, 2026 | filing ↗ |
| Earnings (2.02) | Jan 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 29, 2026 | filing ↗ |
| Other events (8.01) | Jan 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 2, 2026 | filing ↗ |
| Officer/director changes (5.02) | Dec 19, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Dec 16, 2025 | filing ↗ |
| Unregistered equity sale (3.02) | Dec 15, 2025 | filing ↗ |
| Charter/bylaw changes (5.03) | Dec 15, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 15, 2025 | filing ↗ |
| Other events (8.01) | Dec 3, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 3, 2025 | filing ↗ |
| Earnings (2.02) | Oct 30, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 30, 2025 | filing ↗ |
| New financial obligation (2.03) | Oct 9, 2025 | filing ↗ |