Key facts
- This page summarizes Jason Armstrong's Form 4 filing for COMCAST CORP (CMCSA).
- 9 reported transactions and 3 derivative rows are listed below.
- Accepted by SEC: 03 Mar 2026, 16:14.
Jason Armstrong - 01 Mar 2026 Form 4 Insider Report for COMCAST CORP (CMCSA)
- Reporting relationship
- CFO
- Issuer ticker
- CMCSA
- Reported as of
- 01 Mar 2026
- Net transaction value
- -$1,481,343
- SEC form
- 4
- Accepted by SEC
- 03 Mar 2026, 16:14:01 UTC
- Prior SEC filing
- 26 Feb 2026
- Next SEC filing
- 06 Mar 2026
- Source filing
- View source filing
- Reporting owner signature
- Elizabeth Wideman, Attorney-in-fact
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Jason Armstrong filed Form 4 for COMCAST CORP (CMCSA) on 03 Mar 2026.
Change
- Previous filing in this sequence was filed on 26 Feb 2026.
- Current net transaction value: -$1,481,343.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001958909
Primary reporting owner
Armstrong Jason
- Relationship
- CFO
- Address
- ONE COMCAST CENTER, PHILADELPHIA
- Signature
- Elizabeth Wideman, Attorney-in-fact
- Signature date
- 03 Mar 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
CMCSA
transaction
Class A Common Stock
Options Exercise
- Transaction value
- $0
- Shares
- +93,142
- Change %
- +215%
- Price
- $0.000000
- Shares after
- 136,397
- Date
- 01 Mar 2026
- Ownership
- Direct
- Footnotes
- F1
CMCSA
transaction
Class A Common Stock
Options Exercise
- Transaction value
- $0
- Shares
- +5,813
- Change %
- +4.3%
- Price
- $0.000000
- Shares after
- 142,210
- Date
- 01 Mar 2026
- Ownership
- Direct
CMCSA
transaction
Class A Common Stock
Options Exercise
- Transaction value
- $0
- Shares
- +4,540
- Change %
- +3.2%
- Price
- $0.000000
- Shares after
- 146,750
- Date
- 01 Mar 2026
- Ownership
- Direct
CMCSA
transaction
Class A Common Stock
Tax liability
- Transaction value
- $64,985
- Shares
- -2,099
- Change %
- -1.4%
- Price
- $30.96
- Shares after
- 144,651
- Date
- 01 Mar 2026
- Ownership
- Direct
CMCSA
transaction
Class A Common Stock
Tax liability
- Transaction value
- $83,220
- Shares
- -2,688
- Change %
- -1.9%
- Price
- $30.96
- Shares after
- 141,963
- Date
- 01 Mar 2026
- Ownership
- Direct
CMCSA
transaction
Class A Common Stock
Tax liability
- Transaction value
- $1,333,138
- Shares
- -43,060
- Change %
- -30%
- Price
- $30.96
- Shares after
- 98,903
- Date
- 01 Mar 2026
- Ownership
- Direct
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
CMCSA
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- $0
- Shares
- -4,540
- Change %
- -20%
- Price
- $0.000000
- Shares after
- 18,504
- Date
- 01 Mar 2026
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 4,540
- Exercise price
- $0.000000
- Footnotes
- F2, F3
CMCSA
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- $0
- Shares
- -5,813
- Change %
- -31%
- Price
- $0.000000
- Shares after
- 12,691
- Date
- 01 Mar 2026
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 5,813
- Exercise price
- $0.000000
- Footnotes
- F2, F3
CMCSA
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- $0
- Shares
- -93,142
- Change %
- -100%
- Price
- $0.000000
- Shares after
- 0
- Date
- 01 Mar 2026
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 93,142
- Exercise price
- Footnotes
- F2, F3
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 3 footnotes
Footnote F1
The price is $0.00.
Footnote F2
Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock.
Footnote F3
These restricted stock units vest on the transaction date.