| 2024-11-27 | ROBERTS BRIAN L | Chairman of Board & CEO | Sell | 469,515 | $42.73 | $20,063,802.84 | -3.5% | → |
| 2024-11-26 | Cavanagh Michael J | President | Sale+OE | 133,159 | $42.54 | $5,664,712.07 | -11.9% | → |
| 2024-11-22 | BACON KENNETH J | Director | Sell | 14,408 | $43.39 | $625,092.52 | -30.6% | → |
| 2024-11-06 | Armstrong Jason | CFO | Sale+OE | 23,248 | $44.84 | $1,042,544.93 | -11.8% | → |
| 2024-05-22 | COMCAST CORP | - | Sell | 3,176,923 | $3.19 | $10,145,821.29 | -61.4% | → |
| 2024-01-29 | Cavanagh Michael J | President | Sell | 114,749 | $46.10 | $5,290,192.82 | -100% | → |
| 2023-11-20 | Armstrong Jason | CFO | Sale+OE | 41,663 | $42.63 | $1,776,015.73 | -32.9% | → |
| 2023-11-14 | ROBERTS BRIAN L | Chairman of Board & CEO | Sell | 616,143 | $41.92 | $25,827,420.66 | -3.5% | → |
| 2023-02-21 | COMCAST CORP | - | Sell | 524,322 | $2.05 | $1,074,750.26 | -1.3% | → |
| 2023-02-06 | COMCAST CORP | - | Sell | 5,121,600 | $2.25 | $11,527,647.37 | -7.3% | → |
| 2023-02-01 | COMCAST CORP | - | Sell | 5,726,385 | $2.74 | $15,679,580.97 | -6.6% | → |
| 2022-12-14 | BACON KENNETH J | Director | Sell | 2,000 | $35.89 | $71,770.00 | -5.2% | → |
| 2022-05-27 | Murdock Daniel C. | EVP & Chief Accounting Officer | Sell | 8,929 | $44.50 | $397,340.50 | -83.1% | → |
| 2022-03-11 | WATSON DAVID N | CEO - Comcast Cable | Sale+OE | 65,410 | $45.69 | $2,988,452.08 | -9.9% | → |
| 2021-06-04 | BACON KENNETH J | Director | Sell | 4,031 | $56.89 | $229,331.65 | -12.0% | → |
| 2021-05-10 | BACON KENNETH J | Director | Sell | 3,966 | $58.83 | $233,328.90 | -10.6% | → |
| 2021-05-03 | Murdock Daniel C. | EVP & Chief Accounting Officer | Sell | 9,800 | $56.89 | $557,456.05 | -99.7% | → |
| 2021-04-30 | ROBERTS BRIAN L | Chairman of Board, Pres. & CEO | Sell | 709,673 | $55.20 | $39,173,949.60 | -8.7% | → |
| 2021-03-04 | Miller Adam Louis | EVP | Sell | 32,891 | $54.89 | $1,805,288.32 | -47.8% | → |
| 2021-03-04 | Montiel Maritza Gomez | Director | Sell | 6,000 | $54.24 | $325,413.00 | -49.2% | → |
| 2021-02-11 | WATSON DAVID N | Sr. EVP | Sale+OE | 181,281 | $52.75 | $9,562,028.91 | -22.0% | → |
| 2021-01-28 | Montiel Maritza Gomez | Director | Sell | 2,000 | $49.97 | $99,947.50 | -7.3% | → |
| 2020-12-31 | COMCAST CORP | - | Sell | 500,000 | $30.06 | $15,030,000.00 | -100% | → |
| 2020-12-02 | SHELL JEFF | CEO - NBCUniversal | Sale+OE | 5,582 | $51.23 | $285,937.95 | -1.6% | → |
| 2020-08-24 | Murdock Daniel C. | SVP & Chief Accounting Officer | Sale+OE | 848 | $42.87 | $36,353.76 | -20.9% | → |
| 2020-08-03 | SHELL JEFF | CEO - NBCUniversal | Sale+OE | 99,484 | $42.91 | $4,268,559.99 | -15.9% | → |
| 2020-06-15 | Murdock Daniel C. | SVP & Chief Accounting Officer | Sale+OE | 4,536 | $38.60 | $175,089.60 | -58.6% | → |
| 2020-05-08 | BONOVITZ SHELDON M | Director | Sell | 15,660 | $36.47 | $571,120.20 | -39.4% | → |
| 2020-04-16 | COMCAST CORP | - | Sell | 5,200,000 | $34.21 | $177,892,000.00 | -50.3% | → |
| 2020-04-16 | Murdock Daniel C. | SVP & Chief Accounting Officer | Sell | 919 | $37.53 | $34,490.07 | -25.7% | → |
| 2020-03-19 | Murdock Daniel C. | SVP & Chief Accounting Officer | Sale+OE | 1,591 | $35.98 | $57,245.45 | -21.0% | → |
| 2020-03-17 | Murdock Daniel C. | SVP & Chief Accounting Officer | Sale+OE | 1,038 | $36.55 | $37,938.90 | -22.5% | → |
| 2020-03-16 | WATSON DAVID N | Sr. EVP | Sale+OE | 202,782 | $37.05 | $7,512,136.35 | -11.8% | → |
| 2020-02-20 | Murdock Daniel C. | SVP & Chief Accounting Officer | Sell | 1,176 | $45.80 | $53,860.80 | -30.7% | → |
| 2020-02-06 | ROBERTS BRIAN L | Chairman of Board, Pres. & CEO | Sale+OE | 513,706 | $44.64 | $22,931,322.13 | -12.4% | → |
| 2019-12-16 | COHEN DAVID L | Sr. EVP | Sale+OE | 633,703 | $43.76 | $27,732,656.15 | -29.9% | → |
| 2019-12-16 | WATSON DAVID N | Sr. EVP | Sale+OE | 78,100 | $43.67 | $3,410,861.30 | -13.2% | → |