Armstrong Jason

Officer · CMCSA

As of 2026-09-16, Armstrong Jason has 29 Form 4 transactions on record across 1 company — 17 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Trades by company

CMCSA · 29 trades
2026-03-05: Withheld for tax, 69,003 sh ($2.2M)2026-03-05: Option exercise, 73,497 sh ($2.1M)2026-03-05: Option exercise, 73,497 sh ($2.1M)2026-03-05: Sale, 4,494 sh ($143K)2026-03-01: Withheld for tax, 43,060 sh ($1.3M)2026-03-01: Withheld for tax, 2,688 sh ($83K)2026-03-01: Withheld for tax, 2,099 sh ($65K)2026-03-01: Option exercise, 4,540 sh ($0)2026-03-01: Option exercise, 5,813 sh ($0)2026-03-01: Option exercise, 93,142 sh ($0)2026-03-01: Option exercise, 5,813 sh ($0)2026-03-01: Option exercise, 4,540 sh ($0)2026-03-01: Option exercise, 93,142 sh ($0)2026-02-24: Award / grant, 93,142 sh ($0)2026-01-20: Withheld for tax, 3,950 sh ($112K)2026-01-20: Option exercise, 8,150 sh ($0)2026-01-20: Option exercise, 8,150 sh ($0)2025-06-05: Withheld for tax, 4,032 sh ($138K)2025-06-05: Option exercise, 9,504 sh ($0)2025-06-05: Option exercise, 9,504 sh ($0)2025-03-01: Withheld for tax, 1,994 sh ($72K)2025-03-01: Withheld for tax, 958 sh ($34K)2025-03-01: Option exercise, 4,312 sh ($0)2025-03-01: Option exercise, 4,312 sh ($0)2025-03-01: Option exercise, 2,070 sh ($0)2025-03-01: Option exercise, 2,070 sh ($0)2025-01-14: Withheld for tax, 3,580 sh ($130K)2025-01-14: Option exercise, 7,740 sh ($0)2025-01-14: Option exercise, 7,740 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-03-05CMCSASale4,494 @ $31.73$143K−2.6% of holding167,906Form 4
28 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-03-05CMCSAWithheld for tax69,00398,903Form 4
2026-03-05CMCSAOption exercise73,497172,400Form 4
2026-03-05CMCSAOption exercise73,4970Form 4
2026-03-01CMCSAWithheld for tax43,06098,903Form 4
2026-03-01CMCSAWithheld for tax2,688141,963Form 4
2026-03-01CMCSAWithheld for tax2,099144,651Form 4
2026-03-01CMCSAOption exercise4,540146,750Form 4
2026-03-01CMCSAOption exercise5,813142,210Form 4
2026-03-01CMCSAOption exercise93,1420Form 4
2026-03-01CMCSAOption exercise5,81312,691Form 4
2026-03-01CMCSAOption exercise4,54018,504Form 4
2026-03-01CMCSAOption exercise93,142136,397Form 4
2026-02-24CMCSAAward / grant93,14293,142Form 4
2026-01-20CMCSAWithheld for tax3,95043,255Form 4
2026-01-20CMCSAOption exercise8,15023,044Form 4
2026-01-20CMCSAOption exercise8,15047,205Form 4
2025-06-05CMCSAWithheld for tax4,03239,055Form 4
2025-06-05CMCSAOption exercise9,50443,087Form 4
2025-06-05CMCSAOption exercise9,50429,624Form 4
2025-03-01CMCSAWithheld for tax1,99432,914Form 4
2025-03-01CMCSAWithheld for tax95834,908Form 4
2025-03-01CMCSAOption exercise4,31233,796Form 4
2025-03-01CMCSAOption exercise4,31239,128Form 4
2025-03-01CMCSAOption exercise2,07043,440Form 4
2025-03-01CMCSAOption exercise2,07035,866Form 4
2025-01-14CMCSAWithheld for tax3,58029,484Form 4
2025-01-14CMCSAOption exercise7,74045,510Form 4
2025-01-14CMCSAOption exercise7,74033,064Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.