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Who

Mathias Dopfner

Director

Company insider

Files Form 4 as: Director, Netflix; Director, Warner Music Group; Director, Warner Media.

Every Form 4 they filed

In numbers

Trades disclosed
281
Buys
2
Sells
4
Bought
$58K
Sold
$6.7M
Companies
3
Companies where not an officer
3
First trade
31 Jul 2006
Last trade
1 Oct 2026
Last filed
2 Oct 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
NFLX NetflixDirector · Streaming & media · last 1 Oct 20260 buys · 1 sell
WMG Warner Music GroupDirector · Streaming & media · last 1 Sep 20260 buys · 0 sells
Warner MediaDirector · last 14 Jun 20182 buys · 3 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
10Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
1 Oct 2026filed 2 Oct 2026NFLX Netflixoption or derivative · Streaming & mediaSEC FORM 4 Code A—921 at $0.00filing
1 Sep 2026filed 3 Sep 2026WMG Warner Music GroupStreaming & mediaSEC FORM 4 Code A—45 at $0.00filing
1 Sep 2026filed 3 Sep 2026WMG Warner Music GroupStreaming & mediaSEC FORM 4 Code A—45 at $0.00filing
1 Sep 2026filed 2 Sep 2026NFLX Netflixoption or derivative · Streaming & mediaSEC FORM 4 Code A—774 at $0.00filing
1 Sep 2026filed 2 Sep 2026NFLX Netflixoption or derivative · Streaming & mediaSEC FORM 4 Code A—774 at $0.00filing
3 Aug 2026filed 4 Aug 2026NFLX Netflixoption or derivative · Streaming & mediaSEC FORM 4 Code A—852 at $0.00filing
3 Aug 2026filed 4 Aug 2026NFLX Netflixoption or derivative · Streaming & mediaSEC FORM 4 Code A—852 at $0.00filing
1 Jul 2026filed 2 Jul 2026NFLX Netflixoption or derivative · Streaming & mediaSEC FORM 4 Code A—842 at $0.00filing
1 Jul 2026filed 2 Jul 2026NFLX Netflixoption or derivative · Streaming & mediaSEC FORM 4 Code A—842 at $0.00filing
2 Jun 2026filed 4 Jun 2026WMG Warner Music GroupStreaming & mediaSEC FORM 4 Code A—38 at $0.00filing
2 Jun 2026filed 4 Jun 2026WMG Warner Music GroupStreaming & mediaSEC FORM 4 Code A—38 at $0.00filing
1 Jun 2026filed 2 Jun 2026NFLX Netflixoption or derivative · Streaming & mediaSEC FORM 4 Code A—729 at $0.00filing
1 Jun 2026filed 2 Jun 2026NFLX Netflixoption or derivative · Streaming & mediaSEC FORM 4 Code A—729 at $0.00filing
1 May 2026filed 4 May 2026NFLX Netflixoption or derivative · Streaming & mediaSEC FORM 4 Code A—679 at $0.00filing
1 May 2026filed 4 May 2026NFLX Netflixoption or derivative · Streaming & mediaSEC FORM 4 Code A—679 at $0.00filing
1 Apr 2026filed 2 Apr 2026NFLX Netflixoption or derivative · Streaming & mediaSEC FORM 4 Code A—654 at $0.00filing
1 Apr 2026filed 2 Apr 2026NFLX Netflixoption or derivative · Streaming & mediaSEC FORM 4 Code A—654 at $0.00filing
4 Mar 2026filed 6 Mar 2026WMG Warner Music GroupStreaming & mediaSEC FORM 4 Code A—6,186 at $0.00filing
4 Mar 2026filed 6 Mar 2026WMG Warner Music GroupStreaming & mediaSEC FORM 4 Code F$46K1,629 at $28.29filing
4 Mar 2026filed 6 Mar 2026WMG Warner Music GroupStreaming & mediaSEC FORM 4 Code A—6,186 at $0.00filing

Sectors

Communications1
Not placed5

Buys in green, sells in red, by the company’s sector.

Related people

Jeffrey William KarbowskiChief Accounting Officer · Chief Accounting Officer at Netflix, filing Form 4 there in the last year
Jay C. HoagDirector · Director at Netflix, filing Form 4 there in the last year
Richard N. BartonDirector · Director at Netflix, filing Form 4 there in the last year
Bradford L. SmithDirector · Director at Netflix, filing Form 4 there in the last year
Leslie J. KilgoreDirector · Director at Netflix, filing Form 4 there in the last year
Cleo FieldsRepresentative, LA-06 · Also traded NFLX in the last 90 days
Donald J. TrumpPresident · Also traded NFLX in the last 90 days
Byron DonaldsRepresentative, FL-19 · Also traded NFLX in the last 90 days